Environmental Technology & Innovation最新文献_第5页

Optimizing energy budget for UV driven biofilm prevention using response surface methodology 利用响应面方法优化紫外线驱动生物膜预防的能量预算

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2026-01-01 DOI: 10.1016/j.eti.2025.104742

Leila Alidokht, Karina A. Chavarria, Mariana Lanzarini-Lopes

Biofouling presents significant challenges in engineered surfaces, including reduced optical clarity of transparent surfaces, increased surface roughness, and compromised functionality of underwater sensors, observation windows, and cameras. UV-emitting glass (UEG) technology provides an innovative solution to biofouling by targeting the attachment surface, effectively disrupting microbial adhesion and growth. However, UEGs performance is highly dependent on design choices and operational parameters. This study uses Response Surface Methodology (RSM) to optimize UEG performance in fouling control, enabling a deeper understanding of how UV irradiance and daily exposure time affect biofilm formation for submersion durations between 5 and 30 days. Although energy budget (EB) generally increases with Log reduction Value (LRV), there is no significant relationship between the two. Therefore, it is important to select the exposure time and UV irradiance that results in the lowest energy budget for a given submersion duration and goal LRV. The UV irradiance and exposure time resulting in lowest energy budget for LRV > 2 is reported for submersions of 1 – 3 weeks. A feasible range of parameters yielding LRV > 2 at minimum EB was identified. For two weeks, a 63 Wh/day/m² (34.4 Wh/day/m²/N log) was achieved for 2.2 LRV at a UV irradiance of 23 µW/cm² for 840 min per day. The LRV and EB were validated for these conditions and both biofilm coverage and morphology were characterized. Interestingly, although LRV and coverage decreased as expected, the biofilm thickness of the control and UV units were statistically the same illustrating that UV light prevents initial attachment but not subsequent growth.

生物污染给工程表面带来了巨大的挑战，包括透明表面的光学清晰度降低，表面粗糙度增加，水下传感器、观察窗和相机的功能受损。紫外线发光玻璃（UEG）技术通过瞄准附着表面，有效地破坏微生物的附着和生长，为生物污染提供了一种创新的解决方案。然而，ueg的性能高度依赖于设计选择和操作参数。本研究使用响应面法（RSM）来优化UEG在污染控制方面的性能，从而更深入地了解在5至30天的浸泡时间内，紫外线照射和每日暴露时间如何影响生物膜的形成。虽然能量收支（EB）一般随对数缩减值（LRV）的增加而增加，但两者之间没有显著的关系。因此，在给定的浸泡时间和目标LRV下，选择能使能量收支最低的暴露时间和紫外线辐照度是很重要的。据报道，紫外线辐照度和暴露时间导致LRV >； 2在1 - 3周的浸泡中能量预算最低。确定了在最小EB下产生LRV >； 2的可行参数范围。在两周的时间里，在每天840 分钟、紫外线照射23 µW/cm²的情况下，2.2 LRV达到了63 Wh/day/m2（34.4 Wh/day/m2/N log）。对LRV和EB在这些条件下进行了验证，并对生物膜的覆盖和形态进行了表征。有趣的是，尽管LRV和覆盖度如预期的那样下降，但对照和UV单元的生物膜厚度在统计上是相同的，这表明紫外线可以阻止最初的附着，但不会阻止随后的生长。

{"title":"Optimizing energy budget for UV driven biofilm prevention using response surface methodology","authors":"Leila Alidokht, Karina A. Chavarria, Mariana Lanzarini-Lopes","doi":"10.1016/j.eti.2025.104742","DOIUrl":"10.1016/j.eti.2025.104742","url":null,"abstract":"<div><div>Biofouling presents significant challenges in engineered surfaces, including reduced optical clarity of transparent surfaces, increased surface roughness, and compromised functionality of underwater sensors, observation windows, and cameras. UV-emitting glass (UEG) technology provides an innovative solution to biofouling by targeting the attachment surface, effectively disrupting microbial adhesion and growth. However, UEGs performance is highly dependent on design choices and operational parameters. This study uses Response Surface Methodology (RSM) to optimize UEG performance in fouling control, enabling a deeper understanding of how UV irradiance and daily exposure time affect biofilm formation for submersion durations between 5 and 30 days. Although energy budget (EB) generally increases with Log reduction Value (LRV), there is no significant relationship between the two. Therefore, it is important to select the exposure time and UV irradiance that results in the lowest energy budget for a given submersion duration and goal LRV. The UV irradiance and exposure time resulting in lowest energy budget for LRV > 2 is reported for submersions of 1 – 3 weeks. A feasible range of parameters yielding LRV > 2 at minimum EB was identified. For two weeks, a 63 Wh/day/m<sup>2</sup> (34.4 Wh/day/m<sup>2</sup>/N log) was achieved for 2.2 LRV at a UV irradiance of 23 µW/cm² for 840 min per day. The LRV and EB were validated for these conditions and both biofilm coverage and morphology were characterized. Interestingly, although LRV and coverage decreased as expected, the biofilm thickness of the control and UV units were statistically the same illustrating that UV light prevents initial attachment but not subsequent growth.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104742"},"PeriodicalIF":7.1,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145938970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The combined effects of household solid fuel use and hypertension on the risk of stroke 家庭固体燃料使用和高血压对中风风险的综合影响

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-12-31 DOI: 10.1016/j.eti.2025.104733

Jiahui Liu , Yu Liu , Ke Du , Xinqi Wang , Hankun Xie , Xiaolei Wang , Haifeng Xu , Chong Shen

Background

Hypertension and household air pollution are both attributable risk factors for stroke. The study explored their joint effects in a prospective cohort.

Methods

A total of 17096 adults were included in Jurong cohort. Weighted Cox regression models were used to assess the stroke risk. Crossover analysis was used to evaluate the combined effects. The population attributable fraction (PAF) was calculated to evaluate stroke risk attributable to solid fuel use.

Results

After followed up 8.66 (5.53,8.70) years, 1104 stroke cases occurred. Solid fuel use was associated with an increased risk 55.6 % of stroke, whereas, the association was attenuated after adjustment (HR=1.077, 95 % CI: 0.929–1.249). Among those taking no antihypertensives and normotensive individuals, the associated effect still exists (HR=1.284, 95 % CI: 1.041–1.583, HR=1.551, 95 % CI: 1.130–2.129). Moreover, compared with clean fuel users with normotension, clean fuel users with hypertension, solid fuel users with normotension, and solid fuel users with hypertension had increased risks of stroke after excluding those taking antihypertensives with HRs (95 %CI) of 1.181 (0.948–1.472), 1.463 (1.108–1.933), and 1.395 (1.061–1.835), respectively. Heterogeneity was observed between the hypertensive individuals without antihypertensive and normotensive populations (I²=0.588). In addition, solid fuel contributed a higher PAF to stroke among individuals without hypertension (PAF=0.144, 95 %CI=0.051–0.239). The PAF changed after excluding the individuals with antihypertensive treatment, although did not reach statistical significance.

Conclusion

This study highlights the impact of solid fuel use on stroke among the population without hypertension, especially in prehypertension, emphasizing the necessity to reduce solid fuel use for stroke prevention.

背景：高血压和室内空气污染都是导致中风的危险因素。该研究在一个前瞻性队列中探讨了它们的联合效应。方法Jurong队列共纳入17096名成人。采用加权Cox回归模型评估卒中风险。采用交叉分析评价综合效果。计算人口归因分数（PAF）来评估使用固体燃料导致的中风风险。结果随访8.66（5.53,8.70）年，发生脑卒中1104例。固体燃料使用与卒中风险增加55.6% %相关，而调整后相关性减弱（HR=1.077, 95 % CI: 0.929-1.249）。在未服用降压药和血压正常者中，相关效应仍然存在（HR=1.284, 95 % CI: 1.041 ~ 1.583， HR=1.551, 95 % CI: 1.130 ~ 2.129）。此外，与血压正常的清洁燃料使用者相比，高血压的清洁燃料使用者、血压正常的固体燃料使用者和高血压的固体燃料使用者在排除HRs（95 %CI）分别为1.181（0.948-1.472）、1.463（1.108-1.933）和1.395（1.061-1.835）的降压药后卒中风险增加。未抗高血压的高血压个体与正常高血压人群之间存在异质性（I2=0.588）。此外，固体燃料对无高血压个体中风的PAF有较高的贡献（PAF=0.144, 95 %CI= 0.051-0.239）。排除抗高血压治疗组后PAF发生变化，但无统计学意义。结论本研究强调了固体燃料使用对无高血压人群，尤其是高血压前期人群脑卒中的影响，强调了减少固体燃料使用预防脑卒中的必要性。

{"title":"The combined effects of household solid fuel use and hypertension on the risk of stroke","authors":"Jiahui Liu , Yu Liu , Ke Du , Xinqi Wang , Hankun Xie , Xiaolei Wang , Haifeng Xu , Chong Shen","doi":"10.1016/j.eti.2025.104733","DOIUrl":"10.1016/j.eti.2025.104733","url":null,"abstract":"<div><h3>Background</h3><div>Hypertension and household air pollution are both attributable risk factors for stroke. The study explored their joint effects in a prospective cohort.</div></div><div><h3>Methods</h3><div>A total of 17096 adults were included in Jurong cohort. Weighted Cox regression models were used to assess the stroke risk. Crossover analysis was used to evaluate the combined effects. The population attributable fraction (<em>PAF</em>) was calculated to evaluate stroke risk attributable to solid fuel use.</div></div><div><h3>Results</h3><div>After followed up 8.66 (5.53,8.70) years, 1104 stroke cases occurred. Solid fuel use was associated with an increased risk 55.6 % of stroke, whereas, the association was attenuated after adjustment (<em>HR</em>=1.077, 95 % <em>CI</em>: 0.929–1.249). Among those taking no antihypertensives and normotensive individuals, the associated effect still exists (<em>HR</em>=1.284, 95 % <em>CI</em>: 1.041–1.583, <em>HR</em>=1.551, 95 % <em>CI</em>: 1.130–2.129). Moreover, compared with clean fuel users with normotension, clean fuel users with hypertension, solid fuel users with normotension, and solid fuel users with hypertension had increased risks of stroke after excluding those taking antihypertensives with <em>HR</em>s (95 %<em>CI</em>) of 1.181 (0.948–1.472), 1.463 (1.108–1.933), and 1.395 (1.061–1.835), respectively. Heterogeneity was observed between the hypertensive individuals without antihypertensive and normotensive populations (<em>I</em><sup>2</sup>=0.588). In addition, solid fuel contributed a higher <em>PAF</em> to stroke among individuals without hypertension (<em>PAF</em>=0.144, 95 %<em>CI</em>=0.051–0.239). The PAF changed after excluding the individuals with antihypertensive treatment, although did not reach statistical significance.</div></div><div><h3>Conclusion</h3><div>This study highlights the impact of solid fuel use on stroke among the population without hypertension, especially in prehypertension, emphasizing the necessity to reduce solid fuel use for stroke prevention.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104733"},"PeriodicalIF":7.1,"publicationDate":"2025-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nutrient dynamics and recovery efficiencies in a decentralised faecal sludge and food waste treatment system 分散的粪便污泥和食物垃圾处理系统的营养动态和回收效率

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-12-31 DOI: 10.1016/j.eti.2025.104740

Eric Gbenatey Nartey , Ruben Sakrabani , Sean Tyrrel , Edna Dapaah , Noah Adamtey

Decentralised faecal sludge (FS) and food waste (FW) treatment systems like co-composting system offer more practical solutions for waste treatment and nutrient recovery in low- and middle-income countries, yet nutrient recovery and losses across this system remain poorly quantified.This study aimed to assess the flows, losses, and recovery efficiencies of nitrogen (N), phosphorus (P) & potassium (K) with the goal of recommending measures to minimize pollution to water bodies. Raw FS, FW, compost, and effluent samples were collected at each treatment stage over three treatment cycles from August 2021 – 2022 in Somanya, Ghana. A total of 108 composite samples were collected and analysed for N,P & K using standard procedures. The N, P & K losses at each stage of the treatment system were calculated using the mass balance principle and the nutrient flow diagrams were created using the Sankey diagram generator. Results show that, 59–86 % N, 8–40 % P and 49–81 % K were lost at the dewatering stages for all cycles. Losses were lumped together as either gaseous losses, adsorption to media surfaces or percolate. The overall nutrient recovery efficiency of the system was 6–17 % N, 20–37 % P & 17–24 % K in co-compost and treated effluent. Despite high removal efficiencies in the facultative ponds, the final effluent did not meet EU standards. Effluent may become a resource in geographies that have scarce water and less stringent regulations. This study recommends strategies and approaches such as biochar use, percolate/leachate recirculation and covering of compost piles to reduce nutrient losses.

分散的粪便污泥（FS）和食物垃圾（FW）处理系统，如共同堆肥系统，为低收入和中等收入国家的废物处理和养分回收提供了更实用的解决方案，但整个系统的养分回收和损失仍然缺乏量化。本研究旨在评估氮(N)、磷(P)和钾(K)的流动、损失和回收效率，以建议减少对水体污染的措施。从2021年8月至2022年8月，在加纳索马利亚的三个处理周期中，在每个处理阶段收集了粗FS、FW、堆肥和废水样本。共收集了108个复合样品，并使用标准程序分析了N，P &； K。利用质量平衡原理计算处理系统各阶段的N、P、K损失量，并使用Sankey图生成器生成养分流量表。结果表明，各循环脱水阶段氮、磷、钾分别损失59 ~ 86 %、8 ~ 40 %和49 ~ 81 %。损失被集中在一起作为气体损失，吸附到介质表面或渗透。该系统的总养分回收率为6-17 % N， 20-37 % P & 17-24 % K。尽管兼性池的去除效率很高，但最终流出物未达到欧盟标准。污水在水资源匮乏和法规不那么严格的地区可能成为一种资源。本研究建议使用生物炭、渗滤液/渗滤液循环和覆盖堆肥堆等策略和方法来减少养分损失。

{"title":"Nutrient dynamics and recovery efficiencies in a decentralised faecal sludge and food waste treatment system","authors":"Eric Gbenatey Nartey , Ruben Sakrabani , Sean Tyrrel , Edna Dapaah , Noah Adamtey","doi":"10.1016/j.eti.2025.104740","DOIUrl":"10.1016/j.eti.2025.104740","url":null,"abstract":"<div><div>Decentralised faecal sludge (FS) and food waste (FW) treatment systems like co-composting system offer more practical solutions for waste treatment and nutrient recovery in low- and middle-income countries, yet nutrient recovery and losses across this system remain poorly quantified.This study aimed to assess the flows, losses, and recovery efficiencies of nitrogen (N), phosphorus (P) & potassium (K) with the goal of recommending measures to minimize pollution to water bodies. Raw FS, FW, compost, and effluent samples were collected at each treatment stage over three treatment cycles from August 2021 – 2022 in Somanya, Ghana. A total of 108 composite samples were collected and analysed for N,P & K using standard procedures. The N, P & K losses at each stage of the treatment system were calculated using the mass balance principle and the nutrient flow diagrams were created using the Sankey diagram generator. Results show that, 59–86 % N, 8–40 % P and 49–81 % K were lost at the dewatering stages for all cycles. Losses were lumped together as either gaseous losses, adsorption to media surfaces or percolate. The overall nutrient recovery efficiency of the system was 6–17 % N, 20–37 % P & 17–24 % K in co-compost and treated effluent. Despite high removal efficiencies in the facultative ponds, the final effluent did not meet EU standards. Effluent may become a resource in geographies that have scarce water and less stringent regulations. This study recommends strategies and approaches such as biochar use, percolate/leachate recirculation and covering of compost piles to reduce nutrient losses.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104740"},"PeriodicalIF":7.1,"publicationDate":"2025-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Competitive-cooperative microbial dynamics drive water quality regulation in industrial recirculating shrimp aquaculture 竞争-合作微生物动力学驱动工业循环虾养殖水质调节

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-12-31 DOI: 10.1016/j.eti.2025.104732

Shenqun An , Lianbo Zhang , Jinyu Du , Xiaoliang Ren , Zhong Zhuang , Biaobiao Jiang , Yafei Liu , Guang Yang

Carbon (C) and nitrogen (N) content in recirculating aquaculture systems (RAS) are considered key to maintaining water quality stability, primarily governed by feeding and microbial processes. However, the interaction between dynamic changes in C and N content and microbial community structure remains unclear, which limits technological innovation. This study aims to investigate the relationship between C and N dynamics and microbial community structure in L. vannamei aquaculture. The results demonstrated that microbial community structure was primarily shaped by C and N metabolic taxa. From early (25 d) to mid-culture (50 d), a decrease in N-removing genera (e.g., Ferruginibacter and Microbacterium) correlated with rising NO₃^--N (20.52–47.78 mg L⁻¹), while an increase in C-removing genera (e.g., Polynucleobacter and Jeongeupia) paralleled the decline in COD (222.50–191.50 mg L⁻¹), indicating competitive interaction between functional groups. In the late period (after 50 d), the community stabilized with high structural similarity to earlier period, suggesting functional convergence and coexistence after succession. This study elucidates the dynamic co-occurrence patterns between microbial functional groups throughout shrimp growth, offering novel insights for precise water quality management in recirculating aquaculture systems.

循环水养殖系统（RAS）中的碳(C)和氮(N)含量被认为是维持水质稳定的关键，主要受饲养和微生物过程的控制。然而，碳氮含量动态变化与微生物群落结构之间的相互作用尚不清楚，这限制了技术创新。本研究旨在探讨凡纳滨沼虾养殖中C、N动态与微生物群落结构的关系。结果表明，微生物群落结构主要由C和N代谢类群形成。从早期（25 d）到培养中期（50 d），除N菌（如铁杆菌和微细菌）的减少与NO3—N的上升（20.52-47.78 mg L−1）相关，而除c菌（如Polynucleobacter和Jeongeupia）的增加与COD的下降（222.50-191.50 mg L−1）相关，表明功能群之间存在竞争性相互作用。群落后期（50 d后）趋于稳定，与前期结构相似度较高，表明演替后功能趋同共存。本研究阐明了在对虾生长过程中微生物功能群之间的动态共生模式，为循环水养殖系统的精确水质管理提供了新的见解。

{"title":"Competitive-cooperative microbial dynamics drive water quality regulation in industrial recirculating shrimp aquaculture","authors":"Shenqun An , Lianbo Zhang , Jinyu Du , Xiaoliang Ren , Zhong Zhuang , Biaobiao Jiang , Yafei Liu , Guang Yang","doi":"10.1016/j.eti.2025.104732","DOIUrl":"10.1016/j.eti.2025.104732","url":null,"abstract":"<div><div>Carbon (C) and nitrogen (N) content in recirculating aquaculture systems (RAS) are considered key to maintaining water quality stability, primarily governed by feeding and microbial processes. However, the interaction between dynamic changes in C and N content and microbial community structure remains unclear, which limits technological innovation. This study aims to investigate the relationship between C and N dynamics and microbial community structure in <em>L</em>. <em>vannamei</em> aquaculture. The results demonstrated that microbial community structure was primarily shaped by C and N metabolic taxa. From early (25 d) to mid-culture (50 d), a decrease in N-removing genera (<em>e</em>.<em>g</em>., <em>Ferruginibacter</em> and <em>Microbacterium</em>) correlated with rising NO<sub>3</sub><sup>-</sup>-N (20.52–47.78 mg L<sup>−1</sup>), while an increase in C-removing genera (<em>e</em>.<em>g</em>., <em>Polynucleobacter</em> and <em>Jeongeupia</em>) paralleled the decline in COD (222.50–191.50 mg L<sup>−1</sup>), indicating competitive interaction between functional groups. In the late period (after 50 d), the community stabilized with high structural similarity to earlier period, suggesting functional convergence and coexistence after succession. This study elucidates the dynamic co-occurrence patterns between microbial functional groups throughout shrimp growth, offering novel insights for precise water quality management in recirculating aquaculture systems.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104732"},"PeriodicalIF":7.1,"publicationDate":"2025-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145938968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrothermal carbonization of spent coffee grounds: Hydrochar preparation, characterization, and adsorptive removal of rhodamine 6G 废咖啡渣的水热碳化：水炭制备、表征和罗丹明6G的吸附去除

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-12-30 DOI: 10.1016/j.eti.2025.104731

Lucy Nyambura Karanja , Elsada Neziri , Anna Bulátkó , Rong Shan , Krisztina László , Imre Miklós Szilágyi

Hydrochars synthesized under different hydrothermal conditions were investigated to evaluate their structural properties and adsorption performance toward Rhodamine 6G (Rh 6G). Increasing hydrothermal temperature and residence time promoted the formation of a condensed carbon framework, consistent with progressive dehydration and aromatization. FTIR analysis revealed oxygen containing functional groups (-OH, CO, and CC), while EDX showed increasing carbon content and decreasing oxygen content with increasing hydrothermal severity. XRD patterns confirmed an amorphous structure, and nitrogen adsorption-desorption analysis indicated low BET surface areas of 2.0–4.53 m² g⁻¹.

Batch adsorption experiments showed rapid initial uptake of Rh 6G followed by equilibrium, with removal efficiencies of 72–96 %. Adsorption kinetics followed the pseudo-second-order model (R² = 0.991–0.9998), indicating surface-controlled adsorption. Equilibrium data fitted the Langmuir isotherm, suggesting monolayer adsorption, with maximum adsorption capacities of 299.21 ± 2.97–633.12 ± 12.17 mg g⁻¹. Thermodynamic analysis indicated spontaneous and endothermic adsorption, with enthalpy values of 20.81–27.71 kJ mol⁻¹ and positive entropy changes. Adsorption efficiency increased with increasing solution pH and adsorbent dosage. Post-adsorption FTIR spectra showed peak shifts and new bands, confirming surface functional group involvement in dye binding. Despite the low surface area, high adsorption performance was attributed to electrostatic attraction, π-π interactions, and hydrogen bonding. Reusability tests showed that the hydrochars retained approximately 85 % of their initial adsorption capacity after four cycles, demonstrating their potential as reusable adsorbents for dye-contaminated wastewater.

研究了在不同水热条件下合成的氢炭的结构性质和对罗丹明6G （Rh 6G）的吸附性能。水热温度和停留时间的增加促进了碳骨架的形成，与逐渐脱水和芳构化相一致。FTIR分析显示含氧官能团（-OH、CO和CC），而EDX随热液严重程度的增加，碳含量增加，氧含量减少。XRD谱图证实其为非晶态结构，氮气吸附-解吸分析表明BET比表面积在2.0 ~ 4.53 m2 g−1之间。间歇式吸附实验表明，Rh 6G的初始吸附快速，随后达到平衡，去除率为72-96 %。吸附动力学符合拟二阶模型（R2 = 0.991-0.9998），表明表面控制吸附。平衡数据符合Langmuir等温线，表明单层吸附，最大吸附量为299.21 ± 2.97-633.12 ± 12.17 mg g−1。热力学分析表明，吸附为自发吸热吸附，焓值为20.81 ~ 27.71 kJ mol−1，熵变为正。吸附效率随溶液pH和吸附剂用量的增加而增加。吸附后的FTIR光谱显示出峰移和新波段，证实了表面官能团参与了染料的结合。尽管比表面积小，但由于静电吸引、π-π相互作用和氢键的作用，其吸附性能很高。可重复使用性测试表明，经过四个循环后，水合物保留了约85% %的初始吸附容量，证明了它们作为可重复使用的染料污染废水吸附剂的潜力。

{"title":"Hydrothermal carbonization of spent coffee grounds: Hydrochar preparation, characterization, and adsorptive removal of rhodamine 6G","authors":"Lucy Nyambura Karanja , Elsada Neziri , Anna Bulátkó , Rong Shan , Krisztina László , Imre Miklós Szilágyi","doi":"10.1016/j.eti.2025.104731","DOIUrl":"10.1016/j.eti.2025.104731","url":null,"abstract":"<div><div>Hydrochars synthesized under different hydrothermal conditions were investigated to evaluate their structural properties and adsorption performance toward Rhodamine 6G (Rh 6G). Increasing hydrothermal temperature and residence time promoted the formation of a condensed carbon framework, consistent with progressive dehydration and aromatization. FTIR analysis revealed oxygen containing functional groups (-OH, C<img>O, and C<img>C), while EDX showed increasing carbon content and decreasing oxygen content with increasing hydrothermal severity. XRD patterns confirmed an amorphous structure, and nitrogen adsorption-desorption analysis indicated low BET surface areas of 2.0–4.53 m<sup>2</sup> g<sup>−1</sup>.</div><div>Batch adsorption experiments showed rapid initial uptake of Rh 6G followed by equilibrium, with removal efficiencies of 72–96 %. Adsorption kinetics followed the pseudo-second-order model (R<sup>2</sup> = 0.991–0.9998), indicating surface-controlled adsorption. Equilibrium data fitted the Langmuir isotherm, suggesting monolayer adsorption, with maximum adsorption capacities of 299.21 ± 2.97–633.12 ± 12.17 mg g<sup>−1</sup>. Thermodynamic analysis indicated spontaneous and endothermic adsorption, with enthalpy values of 20.81–27.71 kJ mol<sup>−1</sup> and positive entropy changes. Adsorption efficiency increased with increasing solution pH and adsorbent dosage. Post-adsorption FTIR spectra showed peak shifts and new bands, confirming surface functional group involvement in dye binding. Despite the low surface area, high adsorption performance was attributed to electrostatic attraction, π-π interactions, and hydrogen bonding. Reusability tests showed that the hydrochars retained approximately 85 % of their initial adsorption capacity after four cycles, demonstrating their potential as reusable adsorbents for dye-contaminated wastewater.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104731"},"PeriodicalIF":7.1,"publicationDate":"2025-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

nirS-type rather than nirK-type denitrifiers make a more dominant contribution to under maize-soybean rotation systems incorporating fertigation 在玉米-大豆轮作系统中，nirs型反硝化菌比nirk型反硝化菌贡献更大

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-12-30 DOI: 10.1016/j.eti.2025.104736

Jia-xue Li , Meng Wang , Wen-bo Yang , Tian-feng Liang , Lei Zhang , Yong-zhao Zheng , Jun-nan Wu , Cong-ying Shen , Qian Li , Bo Sun , Yu-bo Qin , Cui-lan Li , Jin-jing Zhang , Hang Liu

Nitrous oxide (N₂O), a major greenhouse gas produced during denitrification, plays a significant role in global warming. Crop rotation can enhance soil nitrogen (N) use efficiency and influence N-transforming microbial communities, especially denitrifiers. This study investigated soils under four fertigated cropping systems in a semi-arid region of Northeast China: continuous soybean monocropping (SC), maize-soybean rotation (MS), maize-maize-soybean rotation (MMS), and maize-soybean-soybean rotation (MSS). The impact of these rotations on the abundance and community structure of nirS- and nirK-type denitrifiers was assessed using qPCR and high-throughput sequencing. Compared to the SC control, soybean rotation systems (MS, MMS, MSS) significantly increased soil nitrate reductase (NR) and nitrite reductase (NiR) activities while decreasing soil denitrification potential (SDP). Although the overall abundance of nirS- and nirK-type denitrifiers was generally lower in soybean rotations compared to the SC control, the nirS/nirK gene ratio was considerably higher, suggesting a potential reduction in N₂O emissions. The community composition of both nirS- and nirK-type denitrifiers differed significantly between rotation and monocropping soils, with soil organic matter (SOM) serving as the primary driver. Soil nutrients influenced SDP indirectly by modulating denitrifier community structure, with nirS-type denitrifiers contributing more prominently to denitrification. In conclusion, nirS-type denitrifiers played a more dominant role in denitrification, and maize-soybean rotations with fertigation significantly modified both the diversity and abundance of soil denitrifiers.

氧化亚氮（N2O）是反硝化过程中产生的主要温室气体，在全球变暖中起着重要作用。作物轮作可以提高土壤氮素利用效率，影响氮素转化微生物群落，尤其是反硝化菌。研究了东北半干旱区大豆单作连作（SC）、玉米-大豆轮作（MS）、玉米-玉米-大豆轮作（MMS）和玉米-大豆-大豆轮作（MSS） 4种施肥制度下的土壤。利用qPCR和高通量测序技术评估了这些旋转对nirS和nirk型反硝化菌丰度和群落结构的影响。与SC对照相比，大豆轮作（MS、MMS、MSS）显著提高了土壤硝酸盐还原酶（NR）和亚硝酸盐还原酶（NiR）活性，降低了土壤反硝化潜能（SDP）。虽然与SC对照相比，大豆轮作中nirS-和nirK型反硝化菌的总体丰度普遍较低，但nirS/nirK基因比明显较高，表明N2O排放可能减少。轮作与单作土壤nirS-和nirk -型反硝化菌群落组成差异显著，土壤有机质（SOM）是主要驱动因子。土壤养分通过调节反硝化菌群落结构间接影响SDP，其中nirs型反硝化菌的反硝化作用更为显著。综上所述，nirs型反硝化菌在土壤反硝化作用中起主导作用，玉米-大豆轮作显著改变了土壤反硝化菌的多样性和丰度。

{"title":"nirS-type rather than nirK-type denitrifiers make a more dominant contribution to under maize-soybean rotation systems incorporating fertigation","authors":"Jia-xue Li , Meng Wang , Wen-bo Yang , Tian-feng Liang , Lei Zhang , Yong-zhao Zheng , Jun-nan Wu , Cong-ying Shen , Qian Li , Bo Sun , Yu-bo Qin , Cui-lan Li , Jin-jing Zhang , Hang Liu","doi":"10.1016/j.eti.2025.104736","DOIUrl":"10.1016/j.eti.2025.104736","url":null,"abstract":"<div><div>Nitrous oxide (N<sub>2</sub>O), a major greenhouse gas produced during denitrification, plays a significant role in global warming. Crop rotation can enhance soil nitrogen (N) use efficiency and influence N-transforming microbial communities, especially denitrifiers. This study investigated soils under four fertigated cropping systems in a semi-arid region of Northeast China: continuous soybean monocropping (SC), maize-soybean rotation (MS), maize-maize-soybean rotation (MMS), and maize-soybean-soybean rotation (MSS). The impact of these rotations on the abundance and community structure of <em>nirS</em>- and <em>nirK</em>-type denitrifiers was assessed using qPCR and high-throughput sequencing. Compared to the SC control, soybean rotation systems (MS, MMS, MSS) significantly increased soil nitrate reductase (NR) and nitrite reductase (NiR) activities while decreasing soil denitrification potential (SDP). Although the overall abundance of <em>nirS</em>- and <em>nirK</em>-type denitrifiers was generally lower in soybean rotations compared to the SC control, the <em>nirS</em>/<em>nirK</em> gene ratio was considerably higher, suggesting a potential reduction in N<sub>2</sub>O emissions. The community composition of both <em>nirS</em>- and <em>nirK</em>-type denitrifiers differed significantly between rotation and monocropping soils, with soil organic matter (SOM) serving as the primary driver. Soil nutrients influenced SDP indirectly by modulating denitrifier community structure, with <em>nirS</em>-type denitrifiers contributing more prominently to denitrification. In conclusion, <em>nirS</em>-type denitrifiers played a more dominant role in denitrification, and maize-soybean rotations with fertigation significantly modified both the diversity and abundance of soil denitrifiers.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104736"},"PeriodicalIF":7.1,"publicationDate":"2025-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring biodegradable fibers as sustainable alternatives for sanitary napkin: A comprehensive review 探索生物可降解纤维作为卫生巾的可持续替代品：综合综述

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-12-30 DOI: 10.1016/j.eti.2025.104735

Suman Chandra Paul , Md. Sherazul Islam , Md. Kaikobad , Muhammad Salim Sadman , Mehedi Hasan Emon , Bushra Zaman , Md. Boadrul Islam , Md. Sabuj Hossen , Md Emdad Sarker , Md. Abdullah Al. Mamun

The development of biodegradable fibers for use in sanitary napkins has become a vital research focus aimed at addressing the escalating environmental burden caused by plastic-based menstrual products. The application of naturally derived and biodegradable synthetic fibers not only offers the potential to minimize plastic pollution but also ensures safety, comfort, and efficiency in menstrual hygiene management. This paper provides a comprehensive review of the progress made in the design, composition, and functionality of biodegradable fibers for sanitary napkin applications. Emphasis is placed on evaluating their absorbency, breathability, biodegradability, tensile strength, and antimicrobial performance to determine their suitability as core materials. In addition, the review integrates material characteristics with production feasibility, environmental and health impact assessments, and market prospects, presenting a holistic view of sustainable sanitary product development. Within the context of the global shift toward a circular bioeconomy and the United Nations Sustainable Development Goals (SDGs), biodegradable sanitary products demonstrate significant potential to reduce environmental burdens and improve public health outcomes. Furthermore, the review consolidates standardized testing methodologies for assessing product efficacy and biodegradation, identifies persistent research gaps in fiber processing, hydrophobic coating formulation, and scalable manufacturing, and outlines future directions for innovation. Overall, this study provides a scientific foundation and strategic framework to accelerate the transition toward next-generation, eco-friendly menstrual hygiene technologies.

开发用于卫生巾的可生物降解纤维已成为一个重要的研究重点，旨在解决塑料月经产品造成的日益严重的环境负担。天然来源和可生物降解的合成纤维的应用不仅提供了最大限度地减少塑料污染的潜力，而且确保了月经卫生管理的安全、舒适和效率。本文综述了生物可降解卫生巾纤维的设计、组成和功能方面的研究进展。重点是评估它们的吸收性、透气性、生物降解性、抗拉强度和抗菌性能，以确定它们作为核心材料的适用性。此外，该审查将材料特性与生产可行性、环境和健康影响评估以及市场前景结合起来，提出了可持续卫生产品开发的整体观点。在全球转向循环生物经济和联合国可持续发展目标（sdg）的背景下，可生物降解卫生产品在减轻环境负担和改善公共卫生成果方面显示出巨大潜力。此外，该综述整合了用于评估产品功效和生物降解的标准化测试方法，确定了纤维加工、疏水涂层配方和可扩展制造方面的持续研究空白，并概述了未来的创新方向。总的来说，这项研究为加速向下一代生态友好型月经卫生技术的过渡提供了科学基础和战略框架。

{"title":"Exploring biodegradable fibers as sustainable alternatives for sanitary napkin: A comprehensive review","authors":"Suman Chandra Paul , Md. Sherazul Islam , Md. Kaikobad , Muhammad Salim Sadman , Mehedi Hasan Emon , Bushra Zaman , Md. Boadrul Islam , Md. Sabuj Hossen , Md Emdad Sarker , Md. Abdullah Al. Mamun","doi":"10.1016/j.eti.2025.104735","DOIUrl":"10.1016/j.eti.2025.104735","url":null,"abstract":"<div><div>The development of biodegradable fibers for use in sanitary napkins has become a vital research focus aimed at addressing the escalating environmental burden caused by plastic-based menstrual products. The application of naturally derived and biodegradable synthetic fibers not only offers the potential to minimize plastic pollution but also ensures safety, comfort, and efficiency in menstrual hygiene management. This paper provides a comprehensive review of the progress made in the design, composition, and functionality of biodegradable fibers for sanitary napkin applications. Emphasis is placed on evaluating their absorbency, breathability, biodegradability, tensile strength, and antimicrobial performance to determine their suitability as core materials. In addition, the review integrates material characteristics with production feasibility, environmental and health impact assessments, and market prospects, presenting a holistic view of sustainable sanitary product development. Within the context of the global shift toward a circular bioeconomy and the United Nations Sustainable Development Goals (SDGs), biodegradable sanitary products demonstrate significant potential to reduce environmental burdens and improve public health outcomes. Furthermore, the review consolidates standardized testing methodologies for assessing product efficacy and biodegradation, identifies persistent research gaps in fiber processing, hydrophobic coating formulation, and scalable manufacturing, and outlines future directions for innovation. Overall, this study provides a scientific foundation and strategic framework to accelerate the transition toward next-generation, eco-friendly menstrual hygiene technologies.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104735"},"PeriodicalIF":7.1,"publicationDate":"2025-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145972840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of non-degrading physical approaches for sustainable odour reduction in flax fibres 亚麻纤维持续减少气味的非降解物理方法的评价

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-12-30 DOI: 10.1016/j.eti.2025.104734

Faustine Poret, Géraldine Savary

Flax (Linum usitatissimum L.) fibres are increasingly used in textiles, composites and eco-designed products due to their renewable nature, mechanical strength, and environmental compatibility. Nevertheless, their widespread use is hampered by the emission of unpleasant odours and volatile organic compounds (VOCs), which compromise consumer acceptance in applications such as automotive interiors and indoor materials. This study investigated two solvent-free deodorization techniques: hydrodistillation (HD) and steam distillation (SD), applied to dew-retted and scutched flax fibres. Odour intensity was evaluated by a sensory panel, while VOC emissions were quantified by headspace solid-phase microextraction followed by gas chromatography–mass spectrometry analysis (HS-SPME-GC-MS). Both treatments significantly decreased odour intensity (p < 0.05), with HD providing a stronger reduction and yielding more homogeneous results. Chemical analysis confirmed marked decreases in aliphatic aldehydes (hexanal, heptanal, octanal, nonanal, and decanal) and furans, known to be key contributors to unpleasant sensory notes. These findings demonstrate that HD and SD are efficient, non-degrading, and solvent-free processes that improve the olfactory acceptability of flax fibres while remaining compatible with sustainable and industrial practices. By mitigating odour without compromising fibre integrity, these methods support the broader adoption of flax fibres in odour-sensitive markets and align with the principles of green chemistry.

亚麻（Linum usitatissimum L.）纤维由于其可再生特性、机械强度和环境兼容性，越来越多地用于纺织品、复合材料和生态设计产品。然而，它们的广泛使用受到令人不快的气味和挥发性有机化合物（VOCs）的排放的阻碍，这损害了消费者在汽车内饰和室内材料等应用中的接受度。研究了两种无溶剂脱臭技术：加氢蒸馏法（HD）和蒸汽蒸馏法（SD），分别应用于亚麻纤维的湿法和湿法脱臭。气味强度通过感官面板进行评估，VOC排放量通过顶空固相微萃取和气相色谱-质谱分析（HS-SPME-GC-MS）进行量化。两种处理都显著降低了气味强度（p <； 0.05），HD提供了更强的降低，产生更均匀的结果。化学分析证实，脂肪醛（己醛、庚醛、辛醛、壬醛和癸醛）和呋喃的含量明显下降，而这些物质是造成不愉快感觉的主要因素。这些发现表明，HD和SD是高效、不降解和无溶剂的工艺，可以提高亚麻纤维的嗅觉可接受性，同时保持与可持续和工业实践的兼容性。通过在不损害纤维完整性的情况下减轻气味，这些方法支持亚麻纤维在气味敏感市场的广泛采用，并符合绿色化学的原则。

{"title":"Evaluation of non-degrading physical approaches for sustainable odour reduction in flax fibres","authors":"Faustine Poret, Géraldine Savary","doi":"10.1016/j.eti.2025.104734","DOIUrl":"10.1016/j.eti.2025.104734","url":null,"abstract":"<div><div>Flax (<em>Linum usitatissimum L.</em>) fibres are increasingly used in textiles, composites and eco-designed products due to their renewable nature, mechanical strength, and environmental compatibility. Nevertheless, their widespread use is hampered by the emission of unpleasant odours and volatile organic compounds (VOCs), which compromise consumer acceptance in applications such as automotive interiors and indoor materials. This study investigated two solvent-free deodorization techniques: hydrodistillation (HD) and steam distillation (SD), applied to dew-retted and scutched flax fibres. Odour intensity was evaluated by a sensory panel, while VOC emissions were quantified by headspace solid-phase microextraction followed by gas chromatography–mass spectrometry analysis (HS-SPME-GC-MS). Both treatments significantly decreased odour intensity (p < 0.05), with HD providing a stronger reduction and yielding more homogeneous results. Chemical analysis confirmed marked decreases in aliphatic aldehydes (hexanal, heptanal, octanal, nonanal, and decanal) and furans, known to be key contributors to unpleasant sensory notes. These findings demonstrate that HD and SD are efficient, non-degrading, and solvent-free processes that improve the olfactory acceptability of flax fibres while remaining compatible with sustainable and industrial practices. By mitigating odour without compromising fibre integrity, these methods support the broader adoption of flax fibres in odour-sensitive markets and align with the principles of green chemistry.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104734"},"PeriodicalIF":7.1,"publicationDate":"2025-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of sodium dodecyl sulfate (SDS) pollution on carbon and nitrogen cycling driven by microbes in the lake-terrestrial ecotone 十二烷基硫酸钠污染对湖陆交错带微生物驱动的碳氮循环的影响

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-12-30 DOI: 10.1016/j.eti.2025.104730

Qi Zhu , Lingquan Zeng , Ye Zheng , Zishu Ye , Chun Ye , Chunhua Li

In recent years, the concentration of sodium dodecyl sulfate (SDS), a surfactant widely used in daily life and industrial production, has significantly increased in domestic sewage and industrial wastewater. By altering microbial activity, SDS pollution exerts a non-negligible impact on the ability of lake-terrestrial ecotones to intercept and purify pollutants. This study provides novel insights by demonstrating the concentration-dependent effects of SDS on microbial-driven carbon and nitrogen cycling in lake-terrestrial ecotones, advancing beyond previous work through large-scale simulations that link functional gene dynamics to pollutant removal. Results indicated: (1) Rising SDS concentrations stimulated growth of some soil microorganisms in lake-terrestrial ecotones (e.g., Opitutaceae and Burkholderiales), while inhibiting SDS-sensitive microbes (e.g., Nitrospiraceae). (2) Functional genes exhibited differential responses to SDS concentration changes. Functional genes associated with carbon fixation, methane production, nitrogen fixation, and denitrification displayed heightened sensitivity to SDS concentration changes. (3) SDS addition significantly influenced nitrogen transformation processes, manifested as enhanced nitrification and denitrification functions. This drove a dynamic equilibrium between nitrification and denitrification, thereby enhancing the coupling between carbon and nitrogen cycles. (4) At an SDS concentration of 6 mg/L, microbial activity was inhibited, but microbial community structure remained relatively unchanged. When SDS concentration increased to 10 mg/L, the microbial community shifted toward a pollution-tolerant type. This provided a carbon source for microorganisms capable of degrading SDS, thereby enhancing nitrogen cycling processes in the lake-terrestrial ecotone.

近年来，十二烷基硫酸钠（SDS）是一种广泛应用于日常生活和工业生产的表面活性剂，其在生活污水和工业废水中的浓度显著增加。通过改变微生物活性，SDS污染对湖陆交错带拦截和净化污染物的能力产生不可忽视的影响。本研究通过展示SDS对湖泊-陆地过渡带微生物驱动的碳和氮循环的浓度依赖效应，提供了新的见解，通过将功能基因动力学与污染物去除联系起来的大规模模拟，超越了先前的工作。结果表明：(1)SDS浓度的升高促进了湖陆过渡带部分土壤微生物（如Opitutaceae和Burkholderiales）的生长，抑制了对SDS敏感的微生物（如Nitrospiraceae）的生长。(2)功能基因对SDS浓度变化的响应存在差异。与固碳、产甲烷、固氮和反硝化相关的功能基因对SDS浓度变化表现出高度的敏感性。(3) SDS的添加显著影响了氮转化过程，表现为增强了硝化和反硝化功能。这推动了硝化和反硝化之间的动态平衡，从而增强了碳和氮循环之间的耦合。(4) SDS浓度为6 mg/L时，微生物活性受到抑制，但微生物群落结构保持相对不变。当SDS浓度增加到10 mg/L时，微生物群落向耐污染型转变。这为能够降解SDS的微生物提供了碳源，从而促进了湖陆交带的氮循环过程。

{"title":"Effects of sodium dodecyl sulfate (SDS) pollution on carbon and nitrogen cycling driven by microbes in the lake-terrestrial ecotone","authors":"Qi Zhu , Lingquan Zeng , Ye Zheng , Zishu Ye , Chun Ye , Chunhua Li","doi":"10.1016/j.eti.2025.104730","DOIUrl":"10.1016/j.eti.2025.104730","url":null,"abstract":"<div><div>In recent years, the concentration of sodium dodecyl sulfate (SDS), a surfactant widely used in daily life and industrial production, has significantly increased in domestic sewage and industrial wastewater. By altering microbial activity, SDS pollution exerts a non-negligible impact on the ability of lake-terrestrial ecotones to intercept and purify pollutants. This study provides novel insights by demonstrating the concentration-dependent effects of SDS on microbial-driven carbon and nitrogen cycling in lake-terrestrial ecotones, advancing beyond previous work through large-scale simulations that link functional gene dynamics to pollutant removal. Results indicated: (1) Rising SDS concentrations stimulated growth of some soil microorganisms in lake-terrestrial ecotones (e.g., <em>Opitutaceae</em> and <em>Burkholderiales</em>), while inhibiting SDS-sensitive microbes (e.g., <em>Nitrospiraceae</em>). (2) Functional genes exhibited differential responses to SDS concentration changes. Functional genes associated with carbon fixation, methane production, nitrogen fixation, and denitrification displayed heightened sensitivity to SDS concentration changes. (3) SDS addition significantly influenced nitrogen transformation processes, manifested as enhanced nitrification and denitrification functions. This drove a dynamic equilibrium between nitrification and denitrification, thereby enhancing the coupling between carbon and nitrogen cycles. (4) At an SDS concentration of 6 mg/L, microbial activity was inhibited, but microbial community structure remained relatively unchanged. When SDS concentration increased to 10 mg/L, the microbial community shifted toward a pollution-tolerant type. This provided a carbon source for microorganisms capable of degrading SDS, thereby enhancing nitrogen cycling processes in the lake-terrestrial ecotone.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104730"},"PeriodicalIF":7.1,"publicationDate":"2025-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bridging hydroponic and soil studies: Subcellular partitioning and soil factors govern the uptake and accumulation of fluindapyr in rice 桥接水培和土壤研究：亚细胞分配和土壤因素控制水稻对氟霉啶的吸收和积累

IF 7.1 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation

Pub Date : 2025-12-30 DOI: 10.1016/j.eti.2025.104738

Hantao Yu , Ruiling Tang , Yaoming Zhang , Ying Zhang , Jiaxue Li , Xiaoxiang Fu , Qinghong Zhou , Xugen Shi , Ruqiang Cui , Wenwen Peng , Duantao Cao

Fluindapyr, a recently developed succinate dehydrogenase inhibitor, exhibits promising efficacy against rice sheath blight, yet its mechanisms of uptake and distribution within rice plants remain unclear. To address this knowledge gap, we investigated the uptake, translocation, and accumulation of fluindapyr in rice using integrated hydroponic and soil cultivation experiments. Results showed that fluindapyr was rapidly absorbed by rice roots but exhibited limited upward translocation (translocation factor, TF < 0.8). After foliar application, minimal downward movement was observed (TF < 0.3), reflecting poor systemic mobility. Root uptake occurred primarily via the symplastic pathway through aquaporin-facilitated passive diffusion. Subcellular distribution analysis revealed predominant accumulation in cell walls (57.2 %–72.3 %) and organelles (15.5 %–24.6 %), with strong adsorption to lipophilic components restricting transmembrane transport. In the soil–rice system, soil organic matter content was the primary factor governing fluindapyr uptake, and the in situ pore water concentration (C_IPW) proved to be a more reliable predictor of its accumulation in rice than the total soil concentration (C_soil). These findings elucidate the mechanisms governing fluindapyr behavior in rice and provide a theoretical basis for its rational application and environmental risk assessment.

氟茚达yr是新近开发的琥珀酸脱氢酶抑制剂，对水稻纹枯病具有良好的防治效果，但其在水稻植株中的吸收和分布机制尚不清楚。为了解决这一知识缺口，我们利用水培和土壤栽培综合试验研究了水稻对氟霉霉的吸收、转运和积累。结果表明，氟茚达韦被水稻根系快速吸收，但向上转运有限（转运因子，TF < 0.8）。叶面施用后，观察到最小的向下运动（TF < 0.3），反映了较差的系统流动性。根吸收主要通过水通道蛋白促进的被动扩散的共塑途径发生。亚细胞分布分析显示，主要积聚在细胞壁（57.2% % -72.3 %）和细胞器（15.5% % -24.6 %），对亲脂成分的强吸附限制了跨膜运输。在土壤-水稻系统中，土壤有机质含量是影响水稻吸收的主要因素，而原位孔隙水浓度（CIPW）比土壤总浓度（Csoil）更能可靠地预测水稻的水分积累。这些研究结果阐明了水稻流虫行为的调控机制，为其合理应用和环境风险评价提供了理论依据。

{"title":"Bridging hydroponic and soil studies: Subcellular partitioning and soil factors govern the uptake and accumulation of fluindapyr in rice","authors":"Hantao Yu , Ruiling Tang , Yaoming Zhang , Ying Zhang , Jiaxue Li , Xiaoxiang Fu , Qinghong Zhou , Xugen Shi , Ruqiang Cui , Wenwen Peng , Duantao Cao","doi":"10.1016/j.eti.2025.104738","DOIUrl":"10.1016/j.eti.2025.104738","url":null,"abstract":"<div><div>Fluindapyr, a recently developed succinate dehydrogenase inhibitor, exhibits promising efficacy against rice sheath blight, yet its mechanisms of uptake and distribution within rice plants remain unclear. To address this knowledge gap, we investigated the uptake, translocation, and accumulation of fluindapyr in rice using integrated hydroponic and soil cultivation experiments. Results showed that fluindapyr was rapidly absorbed by rice roots but exhibited limited upward translocation (translocation factor, TF < 0.8). After foliar application, minimal downward movement was observed (TF < 0.3), reflecting poor systemic mobility. Root uptake occurred primarily via the symplastic pathway through aquaporin-facilitated passive diffusion. Subcellular distribution analysis revealed predominant accumulation in cell walls (57.2 %–72.3 %) and organelles (15.5 %–24.6 %), with strong adsorption to lipophilic components restricting transmembrane transport. In the soil–rice system, soil organic matter content was the primary factor governing fluindapyr uptake, and the <em>in situ</em> pore water concentration (C<sub>IPW</sub>) proved to be a more reliable predictor of its accumulation in rice than the total soil concentration (C<sub>soil</sub>). These findings elucidate the mechanisms governing fluindapyr behavior in rice and provide a theoretical basis for its rational application and environmental risk assessment.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104738"},"PeriodicalIF":7.1,"publicationDate":"2025-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0