Environmental Technology & Innovation最新文献_第2页

Alternate wet‑dry irrigation coupled with magnesium-biochar fertilizer improves carbon sequestration, NH₃ mitigation, and water‑N use efficiency in rice paddies 干湿交替灌溉加上镁-生物炭肥料改善了稻田的碳固存、nh3缓解和水氮利用效率

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

Environmental Technology & Innovation

Pub Date : 2026-01-26 DOI: 10.1016/j.eti.2026.104765

Yanqi Li , Xuanming Wang , Fuzheng Gong , Yu Guan , Qi Wu , Daocai Chi , Nanthi S. Bolan , Kadambot H.M. Siddique

The development of low-carbon, water-efficient rice cultivation systems is crucial for sustainable agriculture. Nevertheless, although alternate wet-dry irrigation (I_AWD) can save water and promote the mineralization of soil organic nitrogen (N), it may reduce soil organic carbon (SOC) sequestration and increase ammonia (NH₃) volatilization. To address this trade-off, a magnesium–modified biochar–based fertilizer (MBF) was applied to optimize biochar’s inherently high C:N ratio while enable controlled nitrogen release. A two-year field split-plot experiment was conducted to evaluate the effects of two irrigation regimes (main plots) and five fertilization practices (subplots) on SOC, soil inorganic N, water–N use efficiency, yield, and NH₃ emissions. Results showed that I_AWD combined with N fertilizer reduction and MBF enhanced stem/leaf-to-grain N translocation through the modulation of crop growth rates, increasing yield and grain N use efficiency (NUE_g). Correlation analysis demonstrated that higher soil NH₄⁺ –N suppressed SOC priming, while reduced NH₄⁺–N during basal fertilization and increased SOC limited NH₃ emissions and improved water use efficiency (WUE). Structural equation modeling indicated NH₃ emissions directly reduced NUE and indirectly affected WUE. Compared with conventional fertilization, the treatment of 25 % N reduction combined with 10 t ha⁻¹ MBF (N_3/4B₂) increased SOC by 14.40 %, optimized NH₄⁺–N distribution (reduction during basal fertilization but enhancement during topdressing periods), reduced NH₃ emissions by 10.78 %, and increased yield by 4.82 % and WUE by 10.86 % (two–year averages). Thus, TOPSIS modeling confirmed I_AWDN_3/4B₂ as a sustainable strategy integrating water-saving, yield stability, carbon sequestration, and NH₃ mitigation.

发展低碳、节水的水稻种植系统对可持续农业至关重要。然而，干湿交替灌溉（IAWD）虽然可以节约水分，促进土壤有机氮(N)的矿化，但可能会减少土壤有机碳（SOC）的固存，增加氨（NH3）的挥发。为了解决这一问题，研究人员使用了镁改性生物炭基肥料（MBF）来优化生物炭固有的高碳氮比，同时控制氮的释放。通过2年田间分块试验，评价了2种灌溉方式（主小区）和5种施肥方式（子小区）对土壤有机碳、土壤无机氮、水氮利用效率、产量和NH3排放的影响。结果表明，IAWD配合减施氮肥和MBF，通过调节作物生长速率，提高产量和籽粒氮素利用效率（NUEg），促进茎/叶-籽粒氮素转运。相关分析表明，较高的土壤NH4+ -N抑制了土壤有机碳的启动，而在基肥过程中降低了土壤NH4+ -N，增加了土壤有机碳，限制了NH3的排放，提高了水分利用效率（WUE）。结构方程模型表明，NH3排放直接降低氮肥利用效率，间接影响氮肥利用效率。与常规施肥相比，25 % N减量处理结合10 t ha - 1 MBF （N3/4B2）增加了14.40 %的有机碳，优化了NH4+ -N的分配（基肥期间减少，补肥期间增加），减少了10.78 %的NH₃排放量，提高了4.82 %的产量和10.86 %的WUE（两年平均值）。因此，TOPSIS模型证实IAWDN3/4B2是一种集节水、产量稳定、固碳和NH3缓解于一体的可持续战略。

{"title":"Alternate wet‑dry irrigation coupled with magnesium-biochar fertilizer improves carbon sequestration, NH₃ mitigation, and water‑N use efficiency in rice paddies","authors":"Yanqi Li , Xuanming Wang , Fuzheng Gong , Yu Guan , Qi Wu , Daocai Chi , Nanthi S. Bolan , Kadambot H.M. Siddique","doi":"10.1016/j.eti.2026.104765","DOIUrl":"10.1016/j.eti.2026.104765","url":null,"abstract":"<div><div>The development of low-carbon, water-efficient rice cultivation systems is crucial for sustainable agriculture. Nevertheless, although alternate wet-dry irrigation (I<sub>AWD</sub>) can save water and promote the mineralization of soil organic nitrogen (N), it may reduce soil organic carbon (SOC) sequestration and increase ammonia (NH<sub>3</sub>) volatilization. To address this trade-off, a magnesium–modified biochar–based fertilizer (MBF) was applied to optimize biochar’s inherently high C:N ratio while enable controlled nitrogen release. A two-year field split-plot experiment was conducted to evaluate the effects of two irrigation regimes (main plots) and five fertilization practices (subplots) on SOC, soil inorganic N, water–N use efficiency, yield, and NH<sub>3</sub> emissions. Results showed that I<sub>AWD</sub> combined with N fertilizer reduction and MBF enhanced stem/leaf-to-grain N translocation through the modulation of crop growth rates, increasing yield and grain N use efficiency (NUE<sub>g</sub>). Correlation analysis demonstrated that higher soil NH<sub>4</sub><sup>+</sup> –N suppressed SOC priming, while reduced NH<sub>4</sub><sup>+</sup>–N during basal fertilization and increased SOC limited NH<sub>3</sub> emissions and improved water use efficiency (WUE). Structural equation modeling indicated NH<sub>3</sub> emissions directly reduced NUE and indirectly affected WUE. Compared with conventional fertilization, the treatment of 25 % N reduction combined with 10 t ha⁻<sup>1</sup> MBF (N<sub>3/4</sub>B<sub>2</sub>) increased SOC by 14.40 %, optimized NH<sub>4</sub><sup>+</sup>–N distribution (reduction during basal fertilization but enhancement during topdressing periods), reduced NH₃ emissions by 10.78 %, and increased yield by 4.82 % and WUE by 10.86 % (two–year averages). Thus, TOPSIS modeling confirmed I<sub>AWD</sub>N<sub>3/4</sub>B<sub>2</sub> as a sustainable strategy integrating water-saving, yield stability, carbon sequestration, and NH<sub>3</sub> mitigation.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104765"},"PeriodicalIF":7.1,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074121","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

Sodium acetate outperforms glucose in boosting sulfur-driven autotrophic denitrification under high salinity stress 在高盐度胁迫下，乙酸钠在促进硫驱动的自养反硝化方面优于葡萄糖

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

Environmental Technology & Innovation

Pub Date : 2026-01-26 DOI: 10.1016/j.eti.2026.104777

Xuejiao Huang , Yuhan Wei , Wenjie Fan , Jun Yao , Yaotian Long , Jianhua Xiong , Chunmin Xie

Sulfur autotrophic denitrification (SAD) is widely employed for nitrate (NO₃⁻-N) removal from wastewater due to its advantages. However, high salinity (≥15 g/L) significantly reduces NO₃⁻-N removal efficiency. While adding liquid carbon sources can improve denitrification, their effects and mechanisms under salt stress remain unclear. Here, we compared sodium acetate and glucose in an SAD system at a salinity of 25 g/L. The sodium acetate-enhanced system achieved superior removal rates of 90.55 % for NO₃⁻-N and 85.13 % for total nitrogen (TN), compared with 82.62 % (NO₃⁻-N) and 81.11 % (TN) with glucose. Sodium acetate also resulted in significantly lower nitrite (NO₂⁻-N) accumulation. Furthermore, it promoted higher heterotrophic denitrification contribution and chemical oxygen demand (COD) utilization rates than those observed with glucose. Microbial analysis revealed a shift in dominant bacteria: Thiobacillus and Vitellibacter dominated with glucose, while Thiobacillus and Denitromonas prevailed with sodium acetate. Both carbon sources enhanced NO₃⁻-N reduction by upregulating narG and nirS gene expression, though sodium acetate exhibited a stronger effect. These findings provide a theoretical basis for efficient NO₃⁻-N removal from high-salinity wastewater using a sulfur-autotrophic–heterotrophic collaborative system.

硫自养反硝化（SAD）由于其优点被广泛用于去除废水中的硝酸盐（NO₃⁻-N）。然而，高盐度（≥15 g/L）会显著降低NO₃⁻-N的去除效率。虽然添加液态碳源可以改善反硝化，但其在盐胁迫下的作用和机制尚不清楚。在这里，我们在盐度为25 g/L的SAD系统中比较了乙酸钠和葡萄糖。与葡萄糖的82.62 % （NO₃⁻-N）和81.11 % （TN）相比，醋酸钠增强系统对NO₃⁻-N的去除率为90.55 %和85.13 %。醋酸钠也能显著降低亚硝酸盐（NO₂-N）的积累。此外，与葡萄糖相比，它促进了更高的异养反硝化贡献和化学需氧量（COD）利用率。微生物分析揭示了优势菌的转变：硫杆菌和卵黄杆菌以葡萄糖为主，而硫杆菌和脱硝单胞菌以乙酸钠为主。两种碳源都通过上调narG和nirS基因表达来增强NO₃⁻-N的还原，但乙酸钠的作用更强。这些发现为利用硫-自养-异养协同系统高效去除高盐度废水中的NO₃⁻-N提供了理论基础。

{"title":"Sodium acetate outperforms glucose in boosting sulfur-driven autotrophic denitrification under high salinity stress","authors":"Xuejiao Huang , Yuhan Wei , Wenjie Fan , Jun Yao , Yaotian Long , Jianhua Xiong , Chunmin Xie","doi":"10.1016/j.eti.2026.104777","DOIUrl":"10.1016/j.eti.2026.104777","url":null,"abstract":"<div><div>Sulfur autotrophic denitrification (SAD) is widely employed for nitrate (NO₃⁻-N) removal from wastewater due to its advantages. However, high salinity (≥15 g/L) significantly reduces NO₃⁻-N removal efficiency. While adding liquid carbon sources can improve denitrification, their effects and mechanisms under salt stress remain unclear. Here, we compared sodium acetate and glucose in an SAD system at a salinity of 25 g/L. The sodium acetate-enhanced system achieved superior removal rates of 90.55 % for NO₃⁻-N and 85.13 % for total nitrogen (TN), compared with 82.62 % (NO₃⁻-N) and 81.11 % (TN) with glucose. Sodium acetate also resulted in significantly lower nitrite (NO₂⁻-N) accumulation. Furthermore, it promoted higher heterotrophic denitrification contribution and chemical oxygen demand (COD) utilization rates than those observed with glucose. Microbial analysis revealed a shift in dominant bacteria: <em>Thiobacillus</em> and <em>Vitellibacter</em> dominated with glucose, while <em>Thiobacillus</em> and <em>Denitromonas</em> prevailed with sodium acetate. Both carbon sources enhanced NO₃⁻-N reduction by upregulating <em>n</em>arG and <em>nirS</em> gene expression, though sodium acetate exhibited a stronger effect. These findings provide a theoretical basis for efficient NO₃⁻-N removal from high-salinity wastewater using a sulfur-autotrophic–heterotrophic collaborative system.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104777"},"PeriodicalIF":7.1,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074123","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

Adsorption of sodium dodecyl benzene sulfonate surfactant from aqueous solutions using magnetic graphene oxide nanocomposite functionalized with chitosan 壳聚糖功能化磁性氧化石墨烯纳米复合材料对十二烷基苯磺酸钠表面活性剂的吸附研究

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

Environmental Technology & Innovation

Pub Date : 2026-01-26 DOI: 10.1016/j.eti.2026.104776

Azin Peyravian , Mozhgan Emtyazjoo , Mahnaz sadat Sadeghi , Raziyeh Najafloo

This study investigated the removal of sodium dodecyl benzene sulfonate (SDBS) from aqueous solutions using a chitosan-functionalized magnetic graphene oxide nanocomposite. Graphene was initially synthesized from lignocellulose waste, followed by oxidation and magnetization. The material was subsequently functionalized with chitosan extracted from shrimp shells. The structural properties of the synthesized nanoparticles were characterized using FE-SEM, VSM, AFM, and Raman spectroscopy, which confirmed successful synthesis and functionalization. Batch adsorption experiments were conducted to evaluate the effects of pH, adsorbent dosage, contact time, and temperature. The results showed a maximum experimental adsorption capacity of approximately 65 mg/g. The adsorption isotherm was best described by the Langmuir model, indicating monolayer adsorption on a homogeneous surface. Kinetic studies revealed that the adsorption process followed the pseudo-second-order model. Thermodynamic analysis confirmed that the adsorption of SDBS was endothermic and spontaneous. The synthesized nanocomposite demonstrated a relatively high adsorption capacity for SDBS, suggesting its potential for economic recovery and reuse in wastewater treatment systems. The adsorption mechanism was found to be governed by a combination of electrostatic interactions and surface complexation, indicating a mixed physical–chemical adsorption process.

本研究研究了壳聚糖功能化磁性氧化石墨烯纳米复合材料对水溶液中十二烷基苯磺酸钠（SDBS）的去除效果。石墨烯最初是由木质纤维素废料合成的，然后进行氧化和磁化。随后用虾壳提取的壳聚糖对该材料进行功能化处理。利用FE-SEM、VSM、AFM和拉曼光谱对合成的纳米颗粒进行了结构表征，证实了纳米颗粒的成功合成和功能化。通过批量吸附实验，考察了pH、吸附剂用量、接触时间和温度对吸附效果的影响。实验结果表明，其最大吸附量约为65 mg/g。Langmuir模型最能描述吸附等温线，表明在均匀表面上的单层吸附。动力学研究表明，吸附过程符合准二阶模型。热力学分析证实了SDBS的吸附是吸热自发的。合成的纳米复合材料对SDBS具有较高的吸附能力，表明其在废水处理系统中具有经济回收和再利用的潜力。吸附机理是静电相互作用和表面络合作用共同作用的结果，是一个物理-化学混合吸附过程。

{"title":"Adsorption of sodium dodecyl benzene sulfonate surfactant from aqueous solutions using magnetic graphene oxide nanocomposite functionalized with chitosan","authors":"Azin Peyravian , Mozhgan Emtyazjoo , Mahnaz sadat Sadeghi , Raziyeh Najafloo","doi":"10.1016/j.eti.2026.104776","DOIUrl":"10.1016/j.eti.2026.104776","url":null,"abstract":"<div><div>This study investigated the removal of sodium dodecyl benzene sulfonate (SDBS) from aqueous solutions using a chitosan-functionalized magnetic graphene oxide nanocomposite. Graphene was initially synthesized from lignocellulose waste, followed by oxidation and magnetization. The material was subsequently functionalized with chitosan extracted from shrimp shells. The structural properties of the synthesized nanoparticles were characterized using FE-SEM, VSM, AFM, and Raman spectroscopy, which confirmed successful synthesis and functionalization. Batch adsorption experiments were conducted to evaluate the effects of pH, adsorbent dosage, contact time, and temperature. The results showed a maximum experimental adsorption capacity of approximately 65 mg/g. The adsorption isotherm was best described by the Langmuir model, indicating monolayer adsorption on a homogeneous surface. Kinetic studies revealed that the adsorption process followed the pseudo-second-order model. Thermodynamic analysis confirmed that the adsorption of SDBS was endothermic and spontaneous. The synthesized nanocomposite demonstrated a relatively high adsorption capacity for SDBS, suggesting its potential for economic recovery and reuse in wastewater treatment systems. The adsorption mechanism was found to be governed by a combination of electrostatic interactions and surface complexation, indicating a mixed physical–chemical adsorption process.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104776"},"PeriodicalIF":7.1,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074221","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

Engineering interfacial charge transfer in a MIL-68(In)/In2S3 heterojunction for highly efficient visible-light-driven Cr(VI) reduction MIL-68(in)/In2S3异质结中用于高效可见光驱动Cr（VI）还原的工程界面电荷转移

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

Environmental Technology & Innovation

Pub Date : 2026-01-26 DOI: 10.1016/j.eti.2026.104767

Xiaobin Zhou , Xin Wang , Mei Wang , Chenyu Zhou , Yinming Fan , Yinian Zhu , Shengpeng Mo , Yanan Zhang , Lihao Zhang , Yijian Zhong , Zongqiang Zhu

Photocatalytic reduction represents a promising strategy for remediating toxic hexavalent chromium (Cr(VI)) pollution. MIL-68(In), a typical In-based metal-organic framework, is a potential photocatalyst for this purpose. However, its efficiency is often hampered by the rapid recombination of photogenerated charge carriers and a narrow visible-light response. To address these limitations, we fabricated a MIL-68(In)/In₂S₃ n-n heterojunction by controllably growing In₂S₃ on the MOF substrate, aiming to achieve highly efficient Cr(VI) reduction. Under optimized reaction conditions (pH = 4, temperature 25 °C, catalyst dosage 0.2 g·L⁻¹, initial Cr(VI) concentration 20 mg·L⁻¹), the optimized MIL-68(In)/In₂S₃ composite achieved a Cr(VI) reduction efficiency of 94.44 % within 30 min of visible light irradiation, significantly outperforming its individual components while exhibiting excellent stability and recyclability. A series of photoelectrochemical and radical trapping experiments were conducted to reveal the enhanced mechanism of photocatalytic Cr(VI) reduction. The formed heterojunction interface broadened visible-light absorption and exhibited excellent interfacial charge transfer capability and, driven by a built-in electric field, facilitated the spatial separation of charge carriers. Consequently, photogenerated electrons migrated from MIL-68(In) and accumulate on In₂S₃, directly reducing Cr(VI) to Cr(III). Simultaneously, some electrons participated in the generation of superoxide radicals (•O₂^-), which synergistically contributed to the reduction process. This work provided an effective heterojunction photocatalyst for Cr(VI) wastewater treatment and offered valuable insights for the design of MOF-based photocatalytic systems.

光催化还原是修复有毒六价铬（Cr(VI)）污染的一种很有前途的策略。MIL-68（In）是一种典型的In基金属有机骨架，是一种潜在的光催化剂。然而，它的效率经常受到光产生的载流子的快速重组和狭窄的可见光响应的阻碍。为了解决这些限制，我们通过在MOF衬底上可控地生长In2S3来制备MIL-68(In)/In2S3 n-n异质结，旨在实现高效的Cr（VI）还原。在优化的反应条件（pH = 4，温度25℃，催化剂用量0.2 g·L−1，初始Cr（VI）浓度20 mg·L−1）下，MIL-68(In)/In2S3复合材料在30 min的可见光照射下，Cr（VI）还原效率为94.44 %，显著优于其单个组分，且具有良好的稳定性和可回收性。通过一系列的光电化学和自由基捕获实验，揭示了光催化Cr（VI）还原的增强机理。形成的异质结界面扩大了可见光吸收，表现出优异的界面电荷转移能力，并在内置电场的驱动下促进了载流子的空间分离。因此，光生电子从MIL-68（In）迁移到In2S3上，直接将Cr（VI）还原为Cr（III）。同时，一些电子参与了超氧自由基（•O2-）的生成，协同促进了还原过程。本研究为Cr（VI）废水处理提供了一种有效的异质结光催化剂，并为mof光催化体系的设计提供了有价值的见解。

{"title":"Engineering interfacial charge transfer in a MIL-68(In)/In2S3 heterojunction for highly efficient visible-light-driven Cr(VI) reduction","authors":"Xiaobin Zhou , Xin Wang , Mei Wang , Chenyu Zhou , Yinming Fan , Yinian Zhu , Shengpeng Mo , Yanan Zhang , Lihao Zhang , Yijian Zhong , Zongqiang Zhu","doi":"10.1016/j.eti.2026.104767","DOIUrl":"10.1016/j.eti.2026.104767","url":null,"abstract":"<div><div>Photocatalytic reduction represents a promising strategy for remediating toxic hexavalent chromium (Cr(VI)) pollution. MIL-68(In), a typical In-based metal-organic framework, is a potential photocatalyst for this purpose. However, its efficiency is often hampered by the rapid recombination of photogenerated charge carriers and a narrow visible-light response. To address these limitations, we fabricated a MIL-68(In)/In<sub>2</sub>S<sub>3</sub> n-n heterojunction by controllably growing In<sub>2</sub>S<sub>3</sub> on the MOF substrate, aiming to achieve highly efficient Cr(VI) reduction. Under optimized reaction conditions (pH = 4, temperature 25 °C, catalyst dosage 0.2 g·L<sup>−1</sup>, initial Cr(VI) concentration 20 mg·L<sup>−1</sup>), the optimized MIL-68(In)/In<sub>2</sub>S<sub>3</sub> composite achieved a Cr(VI) reduction efficiency of 94.44 % within 30 min of visible light irradiation, significantly outperforming its individual components while exhibiting excellent stability and recyclability. A series of photoelectrochemical and radical trapping experiments were conducted to reveal the enhanced mechanism of photocatalytic Cr(VI) reduction. The formed heterojunction interface broadened visible-light absorption and exhibited excellent interfacial charge transfer capability and, driven by a built-in electric field, facilitated the spatial separation of charge carriers. Consequently, photogenerated electrons migrated from MIL-68(In) and accumulate on In<sub>2</sub>S<sub>3</sub>, directly reducing Cr(VI) to Cr(III). Simultaneously, some electrons participated in the generation of superoxide radicals (•O<sub>2</sub><sup>-</sup>), which synergistically contributed to the reduction process. This work provided an effective heterojunction photocatalyst for Cr(VI) wastewater treatment and offered valuable insights for the design of MOF-based photocatalytic systems.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104767"},"PeriodicalIF":7.1,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074122","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

Effect of biochars derived from plant and animal manure on heavy metal immobilization in sewage sludge during composting 动植物粪便生物炭对堆肥过程中污泥重金属固定化的影响

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

Environmental Technology & Innovation

Pub Date : 2026-01-26 DOI: 10.1016/j.eti.2026.104791

Weici Quan, Jiawen Zhang, Yuxi Wu, Yiwei Gong, Kaiming Yang, Lu Li, Jin Gao, Kai Yang, Hongguang Cheng

The mobility of heavy metals derived from sewage sludge during composting has attracted increasing concern. In this study, two types of biochars derived from wheat straw (WSB) and chicken manure (CMB) were thoroughly mixed with sewage sludge, respectively, followed by a 20-day composting experiment. The effect of the biochars on the physicochemical properties of sewage sludge and immobilization of cadmium (Cd), copper (Cu), and zinc (Zn) were investigated. The results showed that after the 20-day composting, the residual fractions of Cd, Cu, and Zn increased by 20.5–334.8 %, 36.8–172.1 %, and 17.3–8.5 %, respectively. And the biochar significantly reduced the environmental risk of Cd and Zn by 8.4–9.1 % and 3.2–11.2 % in the sludge. Their effects on Cu were inconsistent, resulting in a 0.7 % decrease with WSB but a 1.0 % increase with CMB. Meanwhile, the biochar optimized the nutrients of the compost, which contained 1.53–1.72 % Total Nitrogen (TN), 2.15–2.39 % Total Phosphorus (TP), and 2.51–2.54 % Total Potassium (TK). In this study, both types of biochar were effective at immobilizing Cd, Cu, and Zn in compost, with WSB showing superior performance. These results are affected by indirect physicochemical properties of the compost, as well as the direct ion exchange, complexation and precipitation. Therefore, it is feasible to use biochar, especially derived from the wheat straw, to immobilize heavy metals in sludge.

污泥堆肥过程中重金属的迁移问题日益引起人们的关注。本研究以麦秸（WSB）和鸡粪（CMB）为原料制备两种生物炭，分别与污水污泥充分混合，进行为期20 d的堆肥试验。研究了生物炭对污泥理化性质及对镉、铜、锌的固定化作用的影响。结果表明：堆肥20 d后，土壤中Cd、Cu和Zn的残留量分别提高了20.5-334.8 %、36.8-172.1 %和17.3-8.5 %。生物炭可显著降低污泥中Cd和Zn的环境风险，分别降低8.4 ~ 9.1 %和3.2 ~ 11.2 %。它们对Cu的影响不一致，WSB降低了0.7 %，而CMB增加了1.0 %。同时，生物炭优化了堆肥的营养成分，总氮（TN）含量为1.53 ~ 1.72% %，总磷（TP）含量为2.15 ~ 2.39 %，总钾（TK）含量为2.51 ~ 2.54 %。在本研究中，两种类型的生物炭都能有效地固定化堆肥中的Cd、Cu和Zn，其中WSB的固定化效果更好。这些结果受堆肥的间接理化性质以及直接离子交换、络合和沉淀的影响。因此，利用生物炭，特别是从麦秸中提取的生物炭来固定化污泥中的重金属是可行的。

{"title":"Effect of biochars derived from plant and animal manure on heavy metal immobilization in sewage sludge during composting","authors":"Weici Quan, Jiawen Zhang, Yuxi Wu, Yiwei Gong, Kaiming Yang, Lu Li, Jin Gao, Kai Yang, Hongguang Cheng","doi":"10.1016/j.eti.2026.104791","DOIUrl":"10.1016/j.eti.2026.104791","url":null,"abstract":"<div><div>The mobility of heavy metals derived from sewage sludge during composting has attracted increasing concern. In this study, two types of biochars derived from wheat straw (WSB) and chicken manure (CMB) were thoroughly mixed with sewage sludge, respectively, followed by a 20-day composting experiment. The effect of the biochars on the physicochemical properties of sewage sludge and immobilization of cadmium (Cd), copper (Cu), and zinc (Zn) were investigated. The results showed that after the 20-day composting, the residual fractions of Cd, Cu, and Zn increased by 20.5–334.8 %, 36.8–172.1 %, and 17.3–8.5 %, respectively. And the biochar significantly reduced the environmental risk of Cd and Zn by 8.4–9.1 % and 3.2–11.2 % in the sludge. Their effects on Cu were inconsistent, resulting in a 0.7 % decrease with WSB but a 1.0 % increase with CMB. Meanwhile, the biochar optimized the nutrients of the compost, which contained 1.53–1.72 % Total Nitrogen (TN), 2.15–2.39 % Total Phosphorus (TP), and 2.51–2.54 % Total Potassium (TK). In this study, both types of biochar were effective at immobilizing Cd, Cu, and Zn in compost, with WSB showing superior performance. These results are affected by indirect physicochemical properties of the compost, as well as the direct ion exchange, complexation and precipitation. Therefore, it is feasible to use biochar, especially derived from the wheat straw, to immobilize heavy metals in sludge.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104791"},"PeriodicalIF":7.1,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074111","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

Upcycling olive and crab wastes into biochar for histamine treatment in fishery wastewater 将橄榄和螃蟹废弃物转化为生物炭用于渔业废水的组胺处理

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

Environmental Technology & Innovation

Pub Date : 2026-01-26 DOI: 10.1016/j.eti.2026.104773

Najla Ben Ameur , Noureddine Allouche , Jean-Yves Hihn , Wafa Sassi

This study investigates a hybrid adsorption–solar photocatalysis process for the treatment of real fishery wastewater using biochars derived from olive pomace (OP) and blue crab shells (BC). The biochars were synthesized and characterized using SEM, TGA–dTG, and XRD analyses. Adsorption experiments were conducted under dark and solar irradiation conditions, and the process was optimized using a Box–Behnken Design statistically validated by ANOVA (p < 0.05). Under optimal conditions (natural pH 8.6, contact time of 80 min, and initial histamine concentration of 60 mg/L), histamine removal efficiencies reached approximately 88 % for OP biochar and up to 99 % for BC biochar under solar irradiation, highlighting the synergistic effect of adsorption and photocatalysis. Kinetic and isotherm analyses revealed adsorption governed mainly by physisorption for OP, while BC exhibited enhanced chemisorption and photo-assisted degradation. The optimized process was further adapted to continuous operation and simulated using Aspen HYSYS, predicting overall pollutant removal efficiencies exceeding 85 % for most contaminants. These results confirm the effectiveness and scalability of this low-cost, solar-assisted hybrid treatment strategy for fisheries wastewater.

本研究利用橄榄渣（OP）和蓝蟹壳（BC）制备的生物炭，研究了一种混合吸附-太阳能光催化工艺处理真实渔业废水。合成了生物炭，并用SEM、tg - dtg和XRD对其进行了表征。在黑暗和太阳照射条件下进行吸附实验，并采用Box-Behnken设计优化工艺，方差分析（p <； 0.05）进行统计验证。在最佳条件下（自然pH 8.6，接触时间为80 min，初始组胺浓度为60 mg/L），在太阳照射下，OP生物炭的组胺去除率约为88 %，BC生物炭的组胺去除率高达99 %，突出了吸附和光催化的协同作用。动力学和等温线分析表明，OP的吸附主要是物理吸附，而BC则表现出增强的化学吸附和光辅助降解。优化后的工艺进一步适应连续运行，并使用Aspen HYSYS进行模拟，预测大多数污染物的总体污染物去除效率超过85% %。这些结果证实了这种低成本、太阳能辅助的渔业废水混合处理策略的有效性和可扩展性。

{"title":"Upcycling olive and crab wastes into biochar for histamine treatment in fishery wastewater","authors":"Najla Ben Ameur , Noureddine Allouche , Jean-Yves Hihn , Wafa Sassi","doi":"10.1016/j.eti.2026.104773","DOIUrl":"10.1016/j.eti.2026.104773","url":null,"abstract":"<div><div>This study investigates a hybrid adsorption–solar photocatalysis process for the treatment of real fishery wastewater using biochars derived from olive pomace (OP) and blue crab shells (BC). The biochars were synthesized and characterized using SEM, TGA–dTG, and XRD analyses. Adsorption experiments were conducted under dark and solar irradiation conditions, and the process was optimized using a Box–Behnken Design statistically validated by ANOVA (p < 0.05). Under optimal conditions (natural pH 8.6, contact time of 80 min, and initial histamine concentration of 60 mg/L), histamine removal efficiencies reached approximately 88 % for OP biochar and up to 99 % for BC biochar under solar irradiation, highlighting the synergistic effect of adsorption and photocatalysis. Kinetic and isotherm analyses revealed adsorption governed mainly by physisorption for OP, while BC exhibited enhanced chemisorption and photo-assisted degradation. The optimized process was further adapted to continuous operation and simulated using Aspen HYSYS, predicting overall pollutant removal efficiencies exceeding 85 % for most contaminants. These results confirm the effectiveness and scalability of this low-cost, solar-assisted hybrid treatment strategy for fisheries wastewater.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104773"},"PeriodicalIF":7.1,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074114","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

Integrated low-temperature washing and drying for sustainable hygiene of domestic laundry 集低温洗涤和烘干于一体，实现家庭洗衣的可持续卫生

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

Environmental Technology & Innovation

Pub Date : 2026-01-23 DOI: 10.1016/j.eti.2026.104763

Rok Fink , Blanka Vozel , Manca Lunder , Nina Čuk , Brigita Tomšič

Low-temperature laundering is promoted to reduce the environmental impact of domestic textile care; however, washing at ≤ 40 °C is insufficient for hygienic decontamination, rendering the drying stage critical, as microbial survival strongly depends on moisture availability and drying conditions. This study systematically investigates the antimicrobial efficacy of low-temperature washing combined with different drying methods under controlled, household-relevant conditions, and directly links hygiene performance to environmental impact using life cycle assessment (LCA). Cotton carriers inoculated with representative bioindicators were washed at 30 °C using a commercial detergent and subsequently dried by high- and low-temperature tumble drying, controlled indoor air drying, and simulated outdoor solar exposure (Xenotest). Low-temperature washing alone resulted in limited microbial reduction, whereas drying led to substantial additional inactivation. Both high- and low-temperature tumble drying eliminated most microorganisms (>7 log CFU cm⁻²), while simulated indoor air drying achieved significant reductions (∼6 log CFU cm⁻²), indicating that moisture reduction is a dominant mechanism of microbial inactivation, even without elevated drying temperatures. In this respect Xenotest treatment was less effective. The LCA showed that drying accounts for more than 50 % of the total environmental impact of the laundering process, with low-temperature tumble drying reducing overall impacts by approximately 20 % compared to high-temperature drying due to lower electricity consumption. By quantitatively linking microbial hygiene outcomes with environmental impacts, this study provides decision-relevant evidence for optimising domestic laundry practices, demonstrating that energy-efficient drying strategies can compensate for the hygienic limitations of low-temperature washing while significantly reducing the environmental footprint of textile care.

提倡低温洗涤，减少家用纺织品护理对环境的影响；然而，≤ 40°C的洗涤不足以实现卫生去污，因此干燥阶段至关重要，因为微生物的存活在很大程度上取决于水分的可用性和干燥条件。本研究系统研究了在可控的家庭相关条件下，低温洗涤结合不同干燥方法的抗菌效果，并使用生命周期评估（LCA）将卫生性能与环境影响直接联系起来。接种了代表性生物指示剂的棉花载体在30°C下使用商业洗涤剂洗涤，随后通过高低温滚筒式干燥、受控室内空气干燥和模拟室外阳光照射（Xenotest）进行干燥。低温洗涤单独导致有限的微生物减少，而干燥导致大量额外的失活。高温和低温滚筒干燥都能消灭大多数微生物（>7 log CFU cm⁻²），而模拟室内空气干燥则能显著减少微生物（~ 6 log CFU cm⁻²），这表明即使没有提高干燥温度，减少水分也是微生物灭活的主要机制。在这方面，Xenotest治疗效果较差。LCA表明，干燥占洗涤过程总环境影响的50% %以上，与高温干燥相比，由于电力消耗较低，低温滚筒式干燥减少了约20% %的总体影响。通过定量地将微生物卫生结果与环境影响联系起来，本研究为优化家庭洗衣实践提供了决策相关的证据，表明节能干燥策略可以弥补低温洗涤的卫生限制，同时显着减少纺织品护理的环境足迹。

{"title":"Integrated low-temperature washing and drying for sustainable hygiene of domestic laundry","authors":"Rok Fink , Blanka Vozel , Manca Lunder , Nina Čuk , Brigita Tomšič","doi":"10.1016/j.eti.2026.104763","DOIUrl":"10.1016/j.eti.2026.104763","url":null,"abstract":"<div><div>Low-temperature laundering is promoted to reduce the environmental impact of domestic textile care; however, washing at ≤ 40 °C is insufficient for hygienic decontamination, rendering the drying stage critical, as microbial survival strongly depends on moisture availability and drying conditions. This study systematically investigates the antimicrobial efficacy of low-temperature washing combined with different drying methods under controlled, household-relevant conditions, and directly links hygiene performance to environmental impact using life cycle assessment (LCA). Cotton carriers inoculated with representative bioindicators were washed at 30 °C using a commercial detergent and subsequently dried by high- and low-temperature tumble drying, controlled indoor air drying, and simulated outdoor solar exposure (Xenotest). Low-temperature washing alone resulted in limited microbial reduction, whereas drying led to substantial additional inactivation. Both high- and low-temperature tumble drying eliminated most microorganisms (>7 log CFU cm⁻²), while simulated indoor air drying achieved significant reductions (∼6 log CFU cm⁻²), indicating that moisture reduction is a dominant mechanism of microbial inactivation, even without elevated drying temperatures. In this respect Xenotest treatment was less effective. The LCA showed that drying accounts for more than 50 % of the total environmental impact of the laundering process, with low-temperature tumble drying reducing overall impacts by approximately 20 % compared to high-temperature drying due to lower electricity consumption. By quantitatively linking microbial hygiene outcomes with environmental impacts, this study provides decision-relevant evidence for optimising domestic laundry practices, demonstrating that energy-efficient drying strategies can compensate for the hygienic limitations of low-temperature washing while significantly reducing the environmental footprint of textile care.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104763"},"PeriodicalIF":7.1,"publicationDate":"2026-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146034622","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

Field calibration of nitrogen-doped carbon-coated silicon carbide (NMC@SiC) passive air samplers to measure polar and non-polar semi-volatile organic compounds 现场校准氮掺杂碳涂层碳化硅（NMC@SiC）被动空气采样器，以测量极性和非极性半挥发性有机化合物

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

Environmental Technology & Innovation

Pub Date : 2026-01-22 DOI: 10.1016/j.eti.2026.104761

Dani Khoury , Supansa Chimjarn , Olivier Delhomme , Maurice Millet

This study reports the first field calibration of nitrogen-doped carbon-coated silicon carbide (NMC@SiC) passive air samplers for measuring semi-volatile organic compounds (SVOCs) in the atmosphere of the Alsace region. The NMC@SiC samplers were deployed concurrently with conventional low-volume active samplers at a central urban site in Strasbourg, enabling direct comparison between passive and active sampling techniques. Sampling covered five two-week periods (2018–2019) plus extended three-to-four-week deployments (2019–2020). After exposure, target compounds adsorbed onto the sorbent were extracted using a two-step protocol involving accelerated solvent extraction followed by solid-phase extraction. Analytical quantification was performed via gas chromatography-mass spectrometry (GC-MS), gas chromatography-tandem mass spectrometry (GC-MS/MS), and liquid chromatography-tandem mass spectrometry (LC-MS/MS), ensuring robust compound-specific detection and quantification. NMC@SiC samplers effectively captured a broad spectrum of SVOCs, including PAHs, PCBs, organochlorine pesticides (OCPs), phenols, and organic acids. Mean sampling rates (R_s) ranged from 2.5 and 6.0 m³ day⁻¹, values comparable to or slightly exceeding those of established passive samplers. Importantly, NMC@SiC efficiently collected both highly semi-volatile and polar analytes (like phenols and carboxylic acids), underscoring its suitability for legacy and emerging pollutants. Its high surface area and polar coating facilitate uptake of both nonpolar and polar compounds, highlighting its promise as a robust tool for long-term SVOC air monitoring. This pioneering field deployment demonstrates NMC@SiC’s potential as a next-generation passive sampler for comprehensive air quality assessment.

本研究报告了用于测量阿尔萨斯地区大气中半挥发性有机化合物（SVOCs）的氮掺杂碳涂层碳化硅（NMC@SiC）被动空气采样器的首次现场校准。NMC@SiC采样器与传统的小容量主动采样器同时部署在斯特拉斯堡的一个中心城市站点，从而可以直接比较被动采样技术和主动采样技术。采样涵盖了五个为期两周的时间段（2018-2019）以及延长的三到四周的部署（2019-2020）。暴露后，目标化合物吸附到吸附剂上，采用两步方案，包括加速溶剂萃取，然后是固相萃取。通过气相色谱-质谱（GC-MS），气相色谱-串联质谱（GC-MS/MS）和液相色谱-串联质谱（LC-MS/MS）进行分析定量，确保稳健的化合物特异性检测和定量。NMC@SiC采样器有效捕获了广泛的SVOCs，包括多环芳烃、多氯联苯、有机氯农药（ocp）、酚类和有机酸。平均抽样率（Rs）范围从2.5到6.0 m³ 天（⁻¹），与已建立的被动抽样器相当或略高于这些值。重要的是，NMC@SiC有效地收集了高度半挥发性和极性分析物（如酚类和羧酸），强调了其对遗留和新出现的污染物的适用性。它的高表面积和极性涂层有利于非极性和极性化合物的吸收，突出了它作为长期SVOC空气监测的强大工具的前景。这一开创性的现场部署证明了NMC@SiC作为下一代被动采样器的潜力，可以进行全面的空气质量评估。

{"title":"Field calibration of nitrogen-doped carbon-coated silicon carbide (NMC@SiC) passive air samplers to measure polar and non-polar semi-volatile organic compounds","authors":"Dani Khoury , Supansa Chimjarn , Olivier Delhomme , Maurice Millet","doi":"10.1016/j.eti.2026.104761","DOIUrl":"10.1016/j.eti.2026.104761","url":null,"abstract":"<div><div>This study reports the first field calibration of nitrogen-doped carbon-coated silicon carbide (NMC@SiC) passive air samplers for measuring semi-volatile organic compounds (SVOCs) in the atmosphere of the Alsace region. The NMC@SiC samplers were deployed concurrently with conventional low-volume active samplers at a central urban site in Strasbourg, enabling direct comparison between passive and active sampling techniques. Sampling covered five two-week periods (2018–2019) plus extended three-to-four-week deployments (2019–2020). After exposure, target compounds adsorbed onto the sorbent were extracted using a two-step protocol involving accelerated solvent extraction followed by solid-phase extraction. Analytical quantification was performed via gas chromatography-mass spectrometry (GC-MS), gas chromatography-tandem mass spectrometry (GC-MS/MS), and liquid chromatography-tandem mass spectrometry (LC-MS/MS), ensuring robust compound-specific detection and quantification. NMC@SiC samplers effectively captured a broad spectrum of SVOCs, including PAHs, PCBs, organochlorine pesticides (OCPs), phenols, and organic acids. Mean sampling rates (R<sub>s</sub>) ranged from 2.5 and 6.0 m³ day⁻¹, values comparable to or slightly exceeding those of established passive samplers. Importantly, NMC@SiC efficiently collected both highly semi-volatile and polar analytes (like phenols and carboxylic acids), underscoring its suitability for legacy and emerging pollutants. Its high surface area and polar coating facilitate uptake of both nonpolar and polar compounds, highlighting its promise as a robust tool for long-term SVOC air monitoring. This pioneering field deployment demonstrates NMC@SiC’s potential as a next-generation passive sampler for comprehensive air quality assessment.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104761"},"PeriodicalIF":7.1,"publicationDate":"2026-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146034616","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

Soil property-dependent toxicity and oxidative stress induced by perfluorooctanoic acid in Caenorhabditis elegans 全氟辛酸诱导秀丽隐杆线虫土壤特性依赖性毒性和氧化应激

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

Environmental Technology & Innovation

Pub Date : 2026-01-22 DOI: 10.1016/j.eti.2026.104762

Caiting Mai , Xiuli Dang , Long Zhao , Davydova Daria , Fuyang Ma , Mengmeng Bao , Fengzhuo Geng , Iseult Lynch

Perfluorooctanoic acid (PFOA), a persistent organic pollutant frequently detected in soils, has received increasing attention due to growing demands for soil environmental guideline values that ensure acceptable ecological risk. However, systematic evaluations of PFOA ecotoxicity under realistic soil conditions remain limited. In this study, Caenorhabditis elegans (C. elegans) was used as a model soil organism, following ISO 10872, to assess PFOA-induced effects on growth, fertility, and reproduction after seven days of exposure in six representative Chinese soils. Oxidative stress responses were also measured, including reactive oxygen species (ROS), malondialdehyde (MDA), superoxide dismutase (SOD), and catalase (CAT). PFOA exposure significantly inhibited all biological endpoints, with EC₅₀ values of 28 ∼ 59 mg·kg⁻¹ for growth, 19 ∼ 53 mg·kg⁻¹ for fertility (expressed as the percentage of gravid adults), and 19 ∼ 39 mg·kg⁻¹ for reproduction. Soil physicochemical properties strongly influenced toxicity. Stepwise regression analysis identified cation exchange capacity (CEC), organic matter (OM), and free Fe oxides (Fe_FO) as major predictors of growth toxicity, explaining 89.7 % of the variance (P < 0.05). For fertility and reproduction, total Fe (Fe_total) was the primary determinant, while the addition of pH, amorphous Fe/Al oxides (Fe_AO, Al_AO), and total Al (Al_total) further improved model performance. PFOA also induced pronounced oxidative stress, evidenced by increased ROS and MDA levels and biphasic SOD and CAT responses, indicating disruption of antioxidant defenses at higher exposures. Overall, these findings clarify how soil geochemistry modulates the bioavailability and ecological toxicity of PFOA, providing essential evidence for developing soil quality standards, environmental guideline values, and improved ecological risk assessments.

全氟辛酸（PFOA）是一种经常在土壤中检测到的持久性有机污染物，由于对确保可接受生态风险的土壤环境指导值的需求日益增长，它受到越来越多的关注。然而，系统评价全氟辛烷磺酸在实际土壤条件下的生态毒性仍然有限。本研究以秀丽隐杆线虫（cenorhabditis elegans， C. elegans）为模型土壤生物，按照ISO 10872标准，在6个具有代表性的中国土壤中，评估了pfoa对pfoa诱导的7 d生长、肥力和繁殖的影响。还测量了氧化应激反应，包括活性氧（ROS）、丙二醛（MDA）、超氧化物歧化酶（SOD）和过氧化氢酶（CAT）。PFOA暴露显著抑制了所有生物学终点，生长的EC50值为28 ~ 59 mg·kg - 1，生育的EC50值为19 ~ 53 mg·kg - 1（以妊娠成虫的百分比表示），生殖的EC50值为19 ~ 39 mg·kg - 1。土壤理化性质对毒性有很大影响。逐步回归分析发现阳离子交换容量（CEC）、有机物（OM）和游离铁氧化物（FeFO）是生长毒性的主要预测因子，解释了89.7% %的方差（P <； 0.05）。对于繁殖和繁殖，总铁（Fetotal）是主要决定因素，而pH、无定形铁/铝氧化物（FeAO、AlAO）和总铝（Altotal）的加入进一步提高了模型的性能。PFOA还会引起明显的氧化应激，ROS和MDA水平升高以及双相SOD和CAT反应表明，高浓度暴露会破坏抗氧化防御。总的来说，这些发现阐明了土壤地球化学如何调节PFOA的生物有效性和生态毒性，为制定土壤质量标准、环境指导值和改进生态风险评估提供了重要证据。

{"title":"Soil property-dependent toxicity and oxidative stress induced by perfluorooctanoic acid in Caenorhabditis elegans","authors":"Caiting Mai , Xiuli Dang , Long Zhao , Davydova Daria , Fuyang Ma , Mengmeng Bao , Fengzhuo Geng , Iseult Lynch","doi":"10.1016/j.eti.2026.104762","DOIUrl":"10.1016/j.eti.2026.104762","url":null,"abstract":"<div><div>Perfluorooctanoic acid (PFOA), a persistent organic pollutant frequently detected in soils, has received increasing attention due to growing demands for soil environmental guideline values that ensure acceptable ecological risk. However, systematic evaluations of PFOA ecotoxicity under realistic soil conditions remain limited. In this study, <em>Caenorhabditis elegans</em> (<em>C. elegans</em>) was used as a model soil organism, following ISO 10872, to assess PFOA-induced effects on growth, fertility, and reproduction after seven days of exposure in six representative Chinese soils. Oxidative stress responses were also measured, including reactive oxygen species (ROS), malondialdehyde (MDA), superoxide dismutase (SOD), and catalase (CAT). PFOA exposure significantly inhibited all biological endpoints, with EC<sub>50</sub> values of 28 ∼ 59 mg·kg<sup>−1</sup> for growth, 19 ∼ 53 mg·kg<sup>−1</sup> for fertility (expressed as the percentage of gravid adults), and 19 ∼ 39 mg·kg<sup>−1</sup> for reproduction. Soil physicochemical properties strongly influenced toxicity. Stepwise regression analysis identified cation exchange capacity (CEC), organic matter (OM), and free Fe oxides (Fe<sub>FO</sub>) as major predictors of growth toxicity, explaining 89.7 % of the variance (<em>P</em> < 0.05). For fertility and reproduction, total Fe (Fe<sub>total</sub>) was the primary determinant, while the addition of pH, amorphous Fe/Al oxides (Fe<sub>AO</sub>, Al<sub>AO</sub>), and total Al (Al<sub>total</sub>) further improved model performance. PFOA also induced pronounced oxidative stress, evidenced by increased ROS and MDA levels and biphasic SOD and CAT responses, indicating disruption of antioxidant defenses at higher exposures. Overall, these findings clarify how soil geochemistry modulates the bioavailability and ecological toxicity of PFOA, providing essential evidence for developing soil quality standards, environmental guideline values, and improved ecological risk assessments.</div></div>","PeriodicalId":11725,"journal":{"name":"Environmental Technology & Innovation","volume":"41 ","pages":"Article 104762"},"PeriodicalIF":7.1,"publicationDate":"2026-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146034619","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 synthesis of FeOF as an activator of peroxymonosulfate for the degradation of lomefloxacin in water 水热合成FeOF作为过氧单硫酸盐活化剂降解水中洛美沙星

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

Environmental Technology & Innovation

Pub Date : 2026-01-18 DOI: 10.1016/j.eti.2026.104760

Haichen Cui , Zheng Wang , Yannan Jia , Weikun Song , Xue Wang , Lu Li , Zhendong Liu , Binbin Wu , Weixiao Gong , Wanting Feng , Yuanxiang Shan , Junchi Zhang

In this study, FeOF was successfully synthesized by first preparing the precursor FeSiF₆·6 H₂O from iron powder, followed by a hydrothermal reaction at 200°C for 10 h using a thoroughly stirred mixture of the precursor and n-propanol. The synthesized FeOF was employed as an activator of peroxymonosulfate (PMS) for the degradation of lomefloxacin (LMF). Experimental results demonstrate that the FeOF/PMS system not only achieved 74.6 % LMF degradation but also maintained high degradation efficiency after five consecutive cycles. More importantly, the system significantly reduced the biotoxicity of the reaction intermediates, thereby offering a promising new strategy for addressing antibiotic contamination.

在本研究中，首先以铁粉为原料制备前驱体FeSiF6·6 H2O，然后将前驱体与正丙醇充分搅拌，在200℃下水热反应10 h，成功地合成了FeOF。将合成的FeOF用作过氧单硫酸酯（PMS）降解洛美沙星（LMF）的活化剂。实验结果表明，FeOF/PMS系统在连续5次循环后，LMF降解率达到74.6 %，并保持了较高的降解效率。更重要的是，该系统显著降低了反应中间体的生物毒性，从而为解决抗生素污染提供了一个有希望的新策略。

引用次数: 0