Environmental Technology & Innovation最新文献_第10页

Adsorptive and fertilizing potential of waste plasterboard for sustainable phosphorus management 废石膏板对磷可持续管理的吸附和施肥潜力

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

Environmental Technology & Innovation

Pub Date : 2025-12-09 DOI: 10.1016/j.eti.2025.104697

Jae-In Lee , Chuluuntsetseg Jadamba , Youn-Jun Lee , Chang-Gu Lee , Young-Man Yoon , Soo-Cheul Yoo , Seong-Jik Park

Phosphorus (P) is vital for plant growth, yet its imbalance across ecosystems poses major environmental and agricultural challenges. Excess P in water leads to eutrophication, while soil deficiency restricts crop productivity. To address both issues, this study explored a sustainable strategy using waste plasterboard (WPB), a gypsum-based construction by-product, as a dual-purpose material. WPB was used to remove P from aqueous solutions, and the P-loaded WPB (P–WPB) was subsequently assessed as a phosphorus source for rice cultivation. Contrary to other calcium-rich adsorbents primarily composed of CaCO₃, thermal treatment of CaSO₄-based WPB resulted in a decline in P adsorption capacity. The superior adsorption performance of untreated WPB was likely associated with its rougher surface morphology, higher calcium elution, and active surface functionalities (CO and –OH groups). P adsorption was diminished under acidic conditions but notably enhanced by the presence of carbonate ions (CO₃^2-). The adsorption of P onto WPB was characterized as an endothermic, monolayer interaction. The maximum adsorption capacity of the WPB was 218.18 mg/g. Environmental safety of the WPB was confirmed through toxicity characteristic leaching procedure and Daphnia magna assays, which showed low toxicity and heavy metal levels below regulatory limits for both WPB and P–WPB. In rice growth experiments, medium and high application levels of P–WPB significantly improved plant growth, demonstrating comparable or superior performance to conventional commercial fertilizers. This study presents a sustainable and cost-effective approach for P removal and recovery using WPB, contributing to water purification, waste recycling, and sustainable P management.

磷(P)对植物生长至关重要，但其在生态系统中的不平衡构成了重大的环境和农业挑战。水中磷过量导致富营养化，而土壤缺乏则限制作物生产力。为了解决这两个问题，本研究探索了使用废石膏板（WPB）作为双重用途材料的可持续战略。废石膏板是一种石膏基建筑副产品。利用WPB去除水体中的磷，并评价了载磷WPB作为水稻种植磷源的价值。与其他主要由CaCO3组成的富钙吸附剂不同，caso4基WPB热处理后吸附P的能力下降。未经处理的WPB具有优异的吸附性能，这可能与其粗糙的表面形貌、较高的钙洗脱率和活性的表面官能团（CO和-OH基团）有关。对磷的吸附在酸性条件下减弱，但在碳酸盐离子（CO32-）的存在下显著增强。磷在WPB上的吸附表现为吸热的单层相互作用。WPB的最大吸附量为218.18 mg/g。通过毒性特征浸出过程和水蚤试验证实了WPB的环境安全性，WPB和P-WPB的毒性低，重金属含量低于法规限值。在水稻生长试验中，中、高施用量的磷- wpb显著改善了水稻的生长，表现出与常规商业肥料相当或更好的性能。本研究提出了一种可持续且具有成本效益的利用WPB去除和回收磷的方法，有助于水净化、废物循环利用和可持续磷管理。

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引用次数: 0

Foliar application of animal based-protein hydrolysates enhances growth performance, yield, and fruit quality of tomato under deficit irrigation in greenhouse 在温室亏缺灌溉条件下，叶面施动物蛋白水解物可提高番茄的生长性能、产量和果实品质

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

Environmental Technology & Innovation

Pub Date : 2025-12-09 DOI: 10.1016/j.eti.2025.104688

Yang Jiao , Xinyu Yuan , Yinhua Ji, Yifan Fu, Weixuan Wang, Haofeng Lv, Bin Liang, Weiwei Zhou

Appropriate deficit irrigation is a water-saving irrigation strategy that can improve tomato fruit quality, but excessive water deficit always leads to yield reduction. It is an urgent task to seek an appropriate strategy that can address the negative impact of deficit irrigation on tomato yields while maintaining high fruit quality. A pot experiment was conducted on drip-irrigated greenhouse tomato to explore the roles of foliar pig blood-derived protein hydrolysates (PP) on the yield, water use efficiency, and fruit quality of tomatoes under normal irrigation (70–75 % field capacity) and deficit irrigation (45–50 % field capacity). The results revealed that PP application strengthened the beneficial effects of deficit irrigation on tomato quality by increasing the levels of soluble solids, sugars, protein, carotenoids, total phenols, and anthocyanins in fruits as well as fruit color and firmness. The negative effects of deficit irrigation on tomato yield were alleviated after PP application, which increased tomato yield by 18.2 % and water use efficiency by 18.8 %, alongside improvements in chlorophyll content, carotenoid content, and photosynthetic parameters. PP also increased the ascorbic acid, glutathione, total phenolic, and flavonoid contents and thereby significantly reduced the malondialdehyde content in tomato leaves caused by deficit irrigation. Therefore, the combined management of protein hydrolysates and deficit irrigation is a winwin method to increase tomato quality and maintain yield in modern sustainable agriculture.

适当亏缺灌溉是提高番茄果实品质的节水灌溉策略，但过度亏缺往往导致产量下降。寻求一种合适的策略，既能解决亏缺灌溉对番茄产量的负面影响，又能保持高品质的果实，是一项紧迫的任务。以滴灌温室番茄为试验材料，研究了猪血源蛋白水解物（PP）在正常灌溉（70 - 75% %田量）和亏缺灌溉（45 - 50% %田量）条件下对番茄产量、水分利用效率和果实品质的影响。结果表明，PP的施用通过提高果实中可溶性固形物、糖、蛋白质、类胡萝卜素、总酚和花青素的含量以及果实的颜色和硬度，强化了亏缺灌溉对番茄品质的有益影响。施用PP后，亏缺灌溉对番茄产量的负面影响得到缓解，番茄产量提高18.2 %，水分利用效率提高18.8 %，叶绿素含量、类胡萝卜素含量和光合参数均有改善。PP还提高了抗坏血酸、谷胱甘肽、总酚和类黄酮含量，从而显著降低了亏缺灌溉引起的番茄叶片丙二醛含量。因此，蛋白质水解物与亏缺灌溉相结合管理是现代可持续农业中提高番茄品质和保持产量的双赢方法。

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引用次数: 0

Enhancing aerobic nitrate removal by amino acid supplementation: Metabolic flexibility of Pseudomonas sp. DE6 in polluted environments 氨基酸补充增强好氧硝酸盐去除：污染环境中假单胞菌DE6的代谢灵活性

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

Environmental Technology & Innovation

Pub Date : 2025-12-09 DOI: 10.1016/j.eti.2025.104696

Hao Zhang , Fujian Zhang , Yongdong Deng , Wenhui Zhang , Jing Xu , Jianjie Gao , Bo Wang , Zhenjun Li , Xiaoyan Fu , Lijuan Wang , Yu Wang , Quanhong Yao , Rihe Peng , Yongsheng Tian

A strain exhibiting high nitrate-removal efficiency under anaerobic conditions was isolated and taxonomically identified as Pseudomonas sp. DE6. Subsequent investigations revealed that supplementation with specific amino acids, including L-asparagine and glycine, substantially enhanced its nitrate-removal capacity under aerobic conditions. The results indicated that when sodium succinate was used as the carbon source at a carbon-to-nitrogen ratio of 4 (mass basis), and the culture was maintained at 30°C, pH 7.0, and 160 rpm under anaerobic tube-incubation conditions, strain DE6 removed 620 mg/L KNO₃ (equivalent to 85.87 mg/L nitrate nitrogen) within 12 h, achieving a removal rate of 1.37 mg N/(g DCW·h) and nearly complete removal of total inorganic-nitrogen within 24 h. However, under aerobic conditions, the nitrate-nitrogen removal rate was substantially lower. Complete removal was achieved only after 24 h with the addition of 0.4 g/L amino acids, yielding a nitrate-nitrogen removal rate of 0.87 mg N/(g DCW·h) and a final total inorganic-nitrogen removal efficiency of 80.94 %. RT-qPCR analysis indicated that nitrate-nitrogen removal was mainly achieved by denitrification and nitrogen assimilation. Following supplementation with amino acids, the expression levels of genes involved in the nitrate assimilation and partial denitrification pathways were significantly upregulated under aerobic conditions. This suggests that amino acid metabolism enhances both denitrification and assimilation by strain DE6 under aerobic conditions, thereby improving the removal efficiency of nitrate nitrogen. These findings highlight the potential for the flexible application of the nitrate-removal mechanism of the amino-acid-coordinated strain DE6 across diverse wastewater-treatment contexts.

分离出一株在厌氧条件下具有高硝酸盐去除效率的菌株，并经分类鉴定为假单胞菌sp. DE6。随后的研究表明，添加特定氨基酸，包括l -天冬酰胺和甘氨酸，在有氧条件下显著提高了硝酸盐去除能力。结果表明，以丁二酸钠为碳源，碳氮比为4（质量基），在30℃、pH 7.0、160 rpm的厌氧管培养条件下，菌株DE6在12 h内脱除了620 mg/L的KNO₃（相当于85.87 mg/L的硝酸氮），脱除率为1.37 mg N/(g DCW·h)，在24 h内几乎完全脱除了总无机氮。然而，在好氧条件下，硝酸盐氮的去除率明显较低。在添加0.4 g/L氨基酸的条件下，24 h即可达到完全去除，硝酸盐氮去除率为0.87 mg N/(g DCW·h)，最终总无机氮去除率为80.94 %。RT-qPCR分析表明，硝酸盐氮的去除主要通过反硝化和氮同化来实现。补充氨基酸后，在好氧条件下，参与硝酸盐同化和部分反硝化途径的基因表达水平显著上调。说明氨基酸代谢增强了DE6菌株在好氧条件下的反硝化和同化作用，从而提高了硝态氮的去除效率。这些发现突出了氨基酸协同菌株DE6在不同废水处理环境中灵活应用硝酸盐去除机制的潜力。

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引用次数: 0

Mitigating soluble phosphorus loss in legacy phosphorus soils: Biosolids characterization and phosphorus-transformation studies 减轻遗留磷土壤中可溶性磷的损失：生物固体表征和磷转化研究

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

Environmental Technology & Innovation

Pub Date : 2025-12-08 DOI: 10.1016/j.eti.2025.104685

Gurpal S. Toor, Emileigh Lucas, Fajun Sun, Quin Zabel, Taylor Roswall, Zachary Kiedrowski, Danielle Pressley

Legacy phosphorus (P) from agricultural soils continues to leak into surface waters. We investigated how biosolids treated with metals (Fe, Al, and Ca) immobilize soluble P (water-extractable P, WEP) in soils while maintaining plant-available P (Mehlich 3-P, M3-P). Two complementary incubations (3–8 weeks; 25 °C) in non-legacy and legacy-P soils (M3-P: 58–139 mg kg⁻¹; 230–953 mg kg⁻¹) tracked WEP, M3-P, and M3-P saturation ratio (M3-PSR). Poultry litter and compost produced the largest WEP and the highest M3-P time-weighted means (TWM: 0.31 and 0.21 mg kg⁻¹ per kg of P), reflecting rapid P release. Fe/Al-treated biosolids (e.g., Bloom ±WTR)) showed small or negative WEP and lower M3-P TWM that declined with increasing application rate (0.12–0.04 mg kg⁻¹ from 1x to 4x). Thermo-hydrolyzed biosolid (low Fe) had a mid-range M3-P TWM (∼0.19 mg kg⁻¹) but the largest delta (Δ) over 8 weeks, consistent with sustained mineralization. WEP_i TWM was –0.002–0.027 across products; increasing Bloom rates reduced WEP_i TWM ( 0.007 to –0.0002 mg kg⁻¹) and Δ (–0.007 to –0.0005 mg kg⁻¹), confirming Fe/Al control of P solubility. M3-PSR changes mirrored product chemistry, with ΔPSR near zero for Bloom and minimal or negative for Fe/Al-treatments. Overall, Fe/Al-treated biosolids effectively reduced soluble P, while some products (e.g., thermo-hydrolyzed, lime-stabilized+WTR) gradually increased plant-available P. We suggest prioritizing Fe/Al-treated biosolids (±WTR) on legacy-P or sandy soils to immobilize soluble P, and applying labile materials (poultry litter, compost, thermo-hydrolyzed biosolids) in split doses on P-deficient soils, guided by M3-P, texture, WEPᵢ, and pH.

农业土壤中的遗留磷(P)继续泄漏到地表水中。我们研究了用金属（铁、铝和钙）处理的生物固体如何在保持植物有效磷（Mehlich 3-P, M3-P）的同时固定土壤中的可溶性磷（水可提取磷，WEP）。在非遗赠和遗赠p土壤（M3-P: 58-139 mg kg⁻¹；230-953 mg kg⁻¹）中进行的两次互补孵育（3-8周；25°C）追踪了WEP、M3-P和M3-P饱和比（M3-PSR）。禽畜垃圾和堆肥产生最大的WEP和最高的M3-P时间加权平均值（TWM: 0.31和0.21 mg kg kg / kg P），反映了P的快速释放。Fe/ al处理的生物固体（例如Bloom±WTR）显示出较小或负的WEP和较低的M3-P TWM，随着施毒量的增加而下降（0.12-0.04 mg kg⁻¹从1倍到4倍）。热水解的生物固体（低铁）有中等范围的M3-P TWM（~ 0.19 mg kg⁻¹），但最大的Δ （Δ）超过8周，与持续矿化一致。WEPi各产品间TWM值为- 0.002 ~ 0.027；增加Bloom速率降低了WEPi TWM（0.007至-0.0002 mg kg⁻¹）和Δ（-0.007至-0.0005 mg kg⁻¹），证实了Fe/Al对P溶解度的控制。M3-PSR的变化反映了产品的化学性质，Bloom处理的ΔPSR接近于零，Fe/ al处理的ΔPSR最小或为负。总体而言，铁/铝处理的生物固体有效地降低了可溶性磷，而一些产品（如热水解、石灰稳定+WTR）逐渐增加了植物速效磷。我们建议优先在遗留磷或沙质土壤上使用铁/铝处理的生物固体（±WTR）来固定可溶性磷，并根据M3-P、质地、WEP - l和pH指导，在缺磷土壤上分剂量施用不稳定材料（家禽粪便、堆肥、热水解生物固体）。

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引用次数: 0

Integration of struvite precipitation and membrane stripping in a single reactor for dual nutrient recovery: A feasibility assessment with synthetic wastewater 鸟粪石沉淀与膜提一体化单反应器双营养物回收：合成废水可行性评价

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

Environmental Technology & Innovation

Pub Date : 2025-12-08 DOI: 10.1016/j.eti.2025.104686

Bogna Śniatała , Dominika Sobotka , Marta Ippolito , Francesco Giannici , Giorgio Mannina , Jacek Mąkinia

Integrating complementary nitrogen (N)- and phosphorus (P)-oriented recovery processes is crucial for advancing wastewater treatment plants toward water resource recovery facilities. This study proposes an innovative one-reactor system for dual nutrient recovery, combining P chemical precipitation and ammonia (NH₃) absorption into acid via gas-to-liquid membrane stripping (GLMS), using elevated temperature (T) and alkaline pH to promote both struvite formation and NH₃ volatilization. Laboratory-scale batch tests were performed using synthetic wastewater to evaluate the integrated technology feasibility and understand the effects of pH (7.3–10.0), T (20–50°C), and feed concentration (1.0–3.0 gNdm⁻³; 0.4–1.2 gPdm⁻³) on recovery performance and product purity. The system achieved up to 99.3 %P and 93.1 %N recovery, with GLMS increasing N recovery by 37.0 ± 24.6 % compared to struvite precipitation alone, though the dominant N recovery pathway (crystallization vs. absorption) depended on the applied operational conditions. Struvite was the dominant P phase at pH ≤ 9.0, whereas highly alkaline and thermal conditions, together with a higher feed concentration, affected product purity and homogeneity. Conversely, elevated pH and T were the main drivers of NH₃ volatilization, showcasing the mutual effect of NH₃ stripping and struvite precipitation. Operation under moderate conditions (pH 8.0–9.0, 38–41°C) yielded high-purity struvite (∼100.0 %), > 93.0 %P and > 40.0 %N recovery effectiveness. This study demonstrates the feasibility of integrating struvite precipitation with NH₃-oriented GLMS in a compact system for enhanced nutrient recovery from wastewater, enabling the production of two wastewater-derived fertilizers while reducing spatial footprint, energy consumption, and chemical demand compared to conventional two-stage N and P recovery systems.

整合互补的氮(N)和磷(P)导向回收工艺对于推进污水处理厂向水资源回收设施发展至关重要。该研究提出了一种创新的单反应器系统，用于双重营养回收，将P化学沉淀和氨（NH3）通过气液膜剥离（GLMS）吸收到酸中，利用高温(T)和碱性pH来促进鸟粪石的形成和NH₃的挥发。利用合成废水进行了实验室规模的批量试验，以评估综合技术的可行性，并了解pH (7.3-10.0)， T（20-50°C）和饲料浓度（1.0-3.0 gNdm⁻³；0.4-1.2 gPdm⁻³）对回收性能和产品纯度的影响。该体系的P回收率高达99.3% %，N回收率为93.1 %，与鸟粪石沉淀相比，GLMS使N回收率提高了37.0 ± 24.6 %，尽管主要的N回收途径（结晶还是吸收）取决于应用的操作条件。pH≤ 9.0时，P相以鸟粪石为主，而高碱性和高温条件以及较高的饲料浓度影响了产品的纯度和均匀性。相反，pH和T的升高是NH₃挥发的主要驱动因素，显示了NH3汽提和鸟粪石沉淀的相互作用。在中等条件下（pH 8.0-9.0, 38-41°C），得到高纯度鸟粪石（~ 100.0 %），>； 93.0 %P和>； 40.0 %N的回收率。本研究证明了将鸟粪石沉淀与nh3取向GLMS结合在一个紧凑系统中的可行性，该系统可以增强废水中的养分回收，与传统的两阶段N和P回收系统相比，可以生产两种废水衍生肥料，同时减少空间足迹、能源消耗和化学需求。

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引用次数: 0

Soil nitrate distribution and removal in a soybean–wheat system in response to groundwater level variations 大豆-小麦系统中土壤硝酸盐分布与去除对地下水位变化的响应

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

Environmental Technology & Innovation

Pub Date : 2025-12-05 DOI: 10.1016/j.eti.2025.104683

Taohong Cao , Dongli She , Daniel Fernàndez-Garcia , Menghua Xiao , Wei Hu , Jiamin Ge , Yongchun Pan , Daming Yang , Yongqiu Xia

Nitrate (NO₃^–) contamination of groundwater caused by agricultural production processes has received considerable attention. However, the mechanisms governing NO₃⁻ migration and attenuation under varying groundwater table conditions remain unclear. Lysimeter tests provide an ideal supplement for studying such processes under controlled conditions. This study presents a lysimeter experiment that was designed for the investigation of NO₃^– transport and removal in the unsaturated zone. Experiments were conducted in soybean–wheat rotation systems from July 2022 to June 2024. Three groundwater depths (30, 60, and 90 cm) and three NO₃^–-N concentrations (0, 5, and 15 mg L⁻¹) were applied in the experiments. The results suggested that shallow water levels (30 cm) impeded NO₃^–-N accumulation in the soil profile. Under the different treatments, the upward NO₃^–-N transport flux (TF) decreased with increasing water table depth. Moreover, the NO₃^–-N removal capacity increased with increasing groundwater level, with the observed NO₃^–-N removal efficiency (RE) values ranging from 54.8 % to 87.4 % across the treatments. The optimal groundwater level for maximizing RE was 30 cm. The soil volumetric moisture content (VMC) played a crucial role in driving the generation of excess dinitrogen (N₂). When multiple related variables, including the VMC, were combined as predictive factors, the explanatory power of the regression model for denitrification increased. Our research bridges a key knowledge gap regarding the upward migration and transformation of groundwater NO₃^–-N in the unsaturated zone and provides a theoretical basis for improving soil and water pollution prevention and control measures.

农业生产过程中引起的地下水硝态氮（NO3 -）污染已引起广泛关注。然而，NO3在不同地下水位条件下的迁移和衰减机制尚不清楚。溶液计试验为在受控条件下研究这些过程提供了理想的补充。本研究提出了一种用于研究非饱和区NO3 -运输和去除的渗滤仪实验。试验于2022年7月至2024年6月在大豆-小麦轮作系统中进行。试验采用3种地下水深度（30、60和90 cm）和3种NO3——N浓度（0、5和15 mg L−1）。结果表明，浅水位（30 cm）阻碍了土壤剖面中NO3—N的积累。不同处理下，NO3——N向上输送通量（TF）随地下水位的增加而减小。NO3——N去除率随地下水位的增加而增加，各处理NO3——N去除率（RE）在54.8% % ~ 87.4% %之间。使RE最大化的最佳地下水位为30 cm。土壤体积含水量（VMC）对过量氮（N2）的产生起着至关重要的作用。当包括VMC在内的多个相关变量组合为预测因子时，回归模型对反硝化的解释能力增强。我们的研究弥补了地下水NO3—N在非饱和带向上迁移转化的关键知识空白，为完善土壤和水污染防治措施提供了理论依据。

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引用次数: 0

Optimal bioaugmentation fosters a highly integrated and efficient microbial network for rapid trichloroethene dechlorination 最佳的生物增强培养了一个高度集成和高效的微生物网络，用于快速三氯乙烯脱氯

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

Environmental Technology & Innovation

Pub Date : 2025-12-05 DOI: 10.1016/j.eti.2025.104682

Hyunsu Kim , Jaejin Lee , Hyunsoo Lim , Kangsuk Kim , Keum Ju Yoon , Joonhong Park , Keunje Yoo

Bioaugmentation is a leading strategy for remediating groundwater contaminated with chlorinated ethenes. However, the optimized dosage to enhance synergetic interactions between consortia and electron donors remains poorly defined. This study investigated the effects of co-injecting a dechlorinating consortium (acclimated JL-1(KCTC11782BP)) at varying concentrations (0–10 % v/v) with lactate (0–1000 mM) on trichloroethene (TCE) degradation in microcosm systems over 40 days. Complete dechlorination of ethene occurred within 20 days across all treatments except 1000 mM lactate, which suppressed activity. The fastest and most robust response arose at 5.3 % acclimated JL-1 with 530 mM lactate, yielding ethene within 5 days. Quantitative PCR showed ∼10-fold enrichment of Dehalococcoides mccartyi tceA during complete TCE removal, and tceA abundance correlated positively with ethene production (p < 0.05). The presence of fermenting bacteria, including Pelosinus, Acetobacterium, and Sporomusa, was crucial for providing essential electron donors and nutrients to support the activity of organohalide-respiring bacteria, particularly Dehalococcoides. With a 5.3 % acclimated JL-1 and 530 mM lactate co-injection, dechlorination facilitated the development of a highly integrated microbial network, characterized by a low network diameter (2), a high average clustering coefficient (0.99), and a short average path length (1.045), all indicative of highly efficient and coordinated microbial interactions. These data delineate quantitative operating ranges for consortium and donor addition, identify an inhibitory upper bound for lactate, and mechanistically link community topology to dechlorination rates. This study can provide tunable, data-driven parameters for field bioaugmentation design, including initial JL-1 loading, lactate setpoints, and monitoring biomarkers.

生物强化是修复地下水中氯代乙烯污染的主要策略。然而，提高财团和电子给体之间协同作用的最佳剂量仍然不明确。本研究研究了不同浓度（0-10 % v/v）的脱氯组合（驯化的JL-1(KCTC11782BP)）与乳酸（0-1000 mM）共注射40天对微观系统中三氯乙烯（TCE）降解的影响。除1000 mM乳酸盐抑制活性外，所有处理的乙烯在20天内完全脱氯。在530 mM乳酸浓度为5.3% %时，JL-1的响应速度最快，在5天内产生乙烯。定量PCR结果显示，在完全去除TCE过程中，Dehalococcoides mccartyi的tceA丰度富集约10倍，tceA丰度与乙烯产量呈正相关（p <； 0.05）。包括Pelosinus、Acetobacterium和Sporomusa在内的发酵细菌的存在对于提供必要的电子供体和营养物质以支持有机盐呼吸细菌（特别是dehalococides）的活性至关重要。通过5.3 %驯化的JL-1和530 mM乳酸共注入，脱氯促进了高度整合的微生物网络的发展，其特点是网络直径小(2)，平均聚类系数高（0.99），平均路径长度短（1.045），所有这些都表明微生物相互作用高效协调。这些数据描述了联合体和供体添加的定量操作范围，确定了乳酸的抑制上限，并将群落拓扑结构与脱氯速率机械地联系起来。该研究可以为现场生物增强设计提供可调的数据驱动参数，包括初始JL-1加载、乳酸设定值和监测生物标志物。

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引用次数: 0

Microplastics and trace metals across the drinking water supply system of Addis Ababa, Ethiopia: A case study for low and middle-income countries 埃塞俄比亚亚的斯亚贝巴饮用水供应系统中的微塑料和微量金属：低收入和中等收入国家的案例研究

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

Environmental Technology & Innovation

Pub Date : 2025-12-05 DOI: 10.1016/j.eti.2025.104684

Selamawit Gebremedhin Tekle , Kassaye Tolessa Sherge , Esayas Alemayehu , Maaike Vercauteren , Jana Asselman

Despite growing global concern about the potential public health impacts of microplastics and trace metals in drinking water, data from low and middle-income countries remain limited, particularly for microplastics, due to outdated and inconsistent sampling and analysis methods. Therefore, we examined microplastics and trace metals in tap water in Addis Ababa, Ethiopia, using advanced spectroscopic techniques as a case study for lower and middle-income countries. Samples were collected from randomly selected standard and slum areas of Addis Ababa during the dry and wet seasons, which included 71 samples analysed for microplastics with μFTIR spectroscopy and 48 samples analysed for dissolved trace metals with ICP-OES. Microplastics were detected in all tap water samples, with concentrations ranging from 0.004 to 1.33 MP L⁻¹ (average = 0.31 ± 0.31 MP L⁻¹), comparable to values in high-income countries. Statistically higher concentrations were measured in slum areas (0.41 ± 0.33 MPs/L) and during the wet season (0.36 ± 0.34 MPs/L). Polypropylene and polyethylene were the most common polymers, and particles sized 25–125 μm were predominant. Dissolved Ba, Zn, V, Cu, and Fe, with mean concentrations of 28.3 ± 6.5, 16.2 ± 19.7, 7.5 ± 0.5, 7.0 ± 2.6, and 5.1 ± 3.7 µg/L, respectively, were the only trace metals detected, showing no significant variation across locations or seasons and remaining below WHO and national drinking water guidelines. Estimated daily intake (EDI) and hazard index (HI) values of trace metals indicated minimal non-carcinogenic risk. No significant correlation was found between microplastic and trace metal concentrations. Overall, drinking water contamination levels were comparable to those reported in high-income countries.

尽管全球日益关注饮用水中微塑料和微量金属的潜在公共健康影响，但由于采样和分析方法过时和不一致，来自低收入和中等收入国家的数据仍然有限，特别是关于微塑料的数据。因此，我们对埃塞俄比亚亚的斯亚贝巴自来水中的微塑料和微量金属进行了检测，使用先进的光谱技术作为中低收入国家的案例研究。在干湿季节，随机选择亚的斯亚贝巴的标准区和贫民窟采集样品，其中71个样品用μFTIR光谱分析微塑料，48个样品用ICP-OES分析溶解微量金属。在所有自来水样品中都检测到微塑料，浓度范围为0.004至1.33 MP L - 1（平均= 0.31 ± 0.31 MP L - 1），与高收入国家的值相当。贫民窟和雨季的浓度分别为0.41±0.33 MPs/L和0.36±0.34 MPs/L。聚丙烯和聚乙烯是最常见的聚合物，粒径在25 ~ 125 μm之间。溶解的Ba、Zn、V、Cu和Fe的平均浓度分别为28.3±6.5、16.2±19.7、7.5±0.5、7.0±2.6和5.1±3.7 µg/L，是唯一检测到的微量金属，在不同地点或季节没有显着变化，仍低于世界卫生组织和国家饮用水指南。微量金属的估计每日摄入量（EDI）和危害指数（HI）值表明最低的非致癌风险。微塑料与微量金属浓度之间无显著相关性。总体而言，饮用水污染水平与高收入国家报告的水平相当。

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引用次数: 0

Waste microalgal biomass-derived biochar electrode for sustainable high-performance supercapacitors: Experimental and computational insights 用于可持续高性能超级电容器的废弃微藻生物质衍生生物炭电极：实验和计算见解

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

Environmental Technology & Innovation

Pub Date : 2025-12-05 DOI: 10.1016/j.eti.2025.104681

Zeyad M. Abdulhamid , Yazan Abuhasheesh , Mohamed E. Daoud , Mahendra Kumar , Dalaver H. Anjum , Pau Loke Show , Shadi W. Hasan

Agricultural and algal biomass residues are emerging as promising low-cost feedstocks for energy storage electrodes. In this work, waste Dunaliella salina microalgal biomass was converted into biochar through pyrolysis and directly deposited onto nickel foam to fabricate a binder-free electrode. The biochar electrode exhibited a high specific capacitance of 507.9 F/g and maintained 104 % retention after 2000 continuous cycles, highlighting excellent electrochemical reversibility in alkaline electrolyte. Complementary density functional theory (DFT) simulations using a nitrogen/oxygen co-doped graphene supercell revealed a strong potassium adsorption energy, partial charge transfer to heteroatom-rich sites, and band structure modifications, including gap opening (0.1861 eV), all indicating enhanced ion affinity and transport. These theoretical findings complement the experimental results, providing a fundamental understanding of the role of heteroatom doping in optimizing electrochemical performance. This work presents a sustainable pathway for developing high-performance electrode materials using microalgal biomass wastes.

农业和藻类生物质残渣正成为储能电极的有前途的低成本原料。本研究将盐渍杜氏藻的废微藻生物质通过热解转化为生物炭，并直接沉积在泡沫镍上制备无粘结剂电极。生物炭电极具有507.9 F/g的高比电容，在连续循环2000次后保持104 %的保留率，在碱性电解质中表现出优异的电化学可逆性。利用氮/氧共掺杂的石墨烯超级单体进行的互补密度泛谱理论（DFT）模拟显示，石墨烯超级单体具有很强的钾吸附能，部分电荷转移到富含杂原子的位点，能带结构发生改变，包括间隙打开（0.1861 eV），这些都表明离子亲和力和输运增强。这些理论发现补充了实验结果，为杂原子掺杂在优化电化学性能中的作用提供了基本的认识。这项工作提出了利用微藻生物质废物开发高性能电极材料的可持续途径。

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引用次数: 0

A comprehensive review of agricultural waste activated carbon as anodes for lithium-ion batteries 农业废弃物活性炭作为锂离子电池阳极的研究综述

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

Environmental Technology & Innovation

Pub Date : 2025-12-05 DOI: 10.1016/j.eti.2025.104662

Andrew N. Misiani, Babalola Aisosa Oni, Olusegun Stanley Tomomewo

This article presents current advances in biomass carbon electrode (CE) synthesis using bio-waste for energy storage (batteries/supercapacitors). The use of biomass residues as the main starting material for the synthesis of CEs has been growing since biomass residues are a renewable resource with relatively low processing costs, which is suitable for an economically and technically sustainable process. This paper discusses the use of diverse biomasses in the synthesis of CEs using various pyrolysis methods and experimental settings and identifies the potential impacts on their properties. It examines the feasibility of using activated carbon (AC) produced from agricultural waste as a high-performance and environmentally friendly anode material for lithium-ion batteries. A comprehensive analysis of the varied biomass types used in the production of CEs with very effective electrochemical characteristics for batteries/supercapacitors were presented. Batteries are electrochemical energy storage devices that store energy through chemical reactions while Supercapacitors are electrical energy storage devices that store energy through electrostatic charge accumulation at the electrode–electrolyte interface, not by chemical reaction. This study provides a thorough grasp of recent advances, challenges and goals of biomass residues as AC anode material in energy storage systems.

本文介绍了利用生物废弃物合成生物质碳电极用于储能（电池/超级电容器）的研究进展。由于生物质残渣是一种加工成本相对较低的可再生资源，适合于经济上和技术上可持续的工艺，因此利用生物质残渣作为合成ce的主要起始材料一直在增长。本文讨论了不同生物质在不同热解方法和实验环境下合成ce中的应用，并确定了对其性能的潜在影响。它研究了使用从农业废弃物中产生的活性炭（AC）作为锂离子电池高性能和环保阳极材料的可行性。全面分析了用于生产具有非常有效的电化学特性的电池/超级电容器的ce的各种生物质类型。电池是通过化学反应储存能量的电化学储能装置，而超级电容器是通过在电极-电解质界面积聚静电电荷而不是通过化学反应储存能量的电能存储装置。本研究对生物质残渣作为储能系统交流阳极材料的最新进展、挑战和目标进行了全面的掌握。

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引用次数: 0