ACS ES&T engineering最新文献_第10页

Carbon Source-Shaped Differences in Keystone Taxa Driving SNEDPR in Anaerobic/Oxic/Anoxic–Aerobic Granular Sludge (AOA–AGS) Systems Treating Low C/N Wastewater 厌氧/氧/缺氧-好氧颗粒污泥（AOA-AGS）系统处理低碳氮比废水中驱动SNEDPR的关键类群碳源形状差异

IF 6.3

ACS ES&T engineering Pub Date : 2026-06-12 Epub Date: 2026-06-03 DOI: 10.1021/acsestengg.6c00183

Ying Han, Hui Sun, Xinrui Zhang, Xinru Li, Yueying Song, Peng Bi, Liang Zhu, Shiquan Ren, Guangchao Yang, Jingwei Ma, Qiulai He

{"title":"Carbon Source-Shaped Differences in Keystone Taxa Driving SNEDPR in Anaerobic/Oxic/Anoxic–Aerobic Granular Sludge (AOA–AGS) Systems Treating Low C/N Wastewater","authors":"Ying Han, Hui Sun, Xinrui Zhang, Xinru Li, Yueying Song, Peng Bi, Liang Zhu, Shiquan Ren, Guangchao Yang, Jingwei Ma, Qiulai He","doi":"10.1021/acsestengg.6c00183","DOIUrl":"10.1021/acsestengg.6c00183","url":null,"abstract":"Anaerobic/oxic/anoxic–aerobicgranular sludge (AOA–AGS)is an emerging and promising process for wastewater treatment, performingsimultaneous nitrification, endogenous denitrification, and phosphorusremoval (SNEDPR). However, as carbon source type influences microbialcommunity and metabolisms, its impacts on the process remain unclear.In this study, the impacts of acetate, propionate, butyrate, and glucoseas sole carbon sources on SNEDPR of AOA–AGS systems were investigated.Acetate and propionate achieved superior nitrogen and phosphorus removalefficiency (over 85% on average) compared to butyrate and glucose.Varied carbon sources led to distinct microbial ecology and metabolisms.Acetate preferred PHA metabolisms and had the fastest responses tonitrogen and phosphorus removal, primarily via Candidatus_Accumulibacter and Candidatus_Competibacter. Propionateobtained sufficient reducing power by enhancing the glyoxylate cycle,mainly via Lysobacter. Butyrate hadmoderate treatment performance, and glucose required additional fermentationsteps, mainly completed via Candidatus_Saccharibacteria. Keystone taxa and abundant taxa shaped by each carbon source contributedto systems’ metabolisms. This study demonstrated that carbonsources shape microbial communities via determining pathways, therebyshaping the functions, microbial ecology, and metabolisms of the systems,providing mechanistic insights and practical guidance for rationalcarbon source selection and management in AOA–AGS systems treatinglow C/N wastewater.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 6","pages":"1870–1881"},"PeriodicalIF":6.3,"publicationDate":"2026-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148651024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantifying Resilience and Sustainability of Different Plant Operations at a Wastewater Plant Experiencing Wet Weather 在经历潮湿天气的污水处理厂，量化不同工厂操作的弹性和可持续性

IF 6.3

ACS ES&T engineering Pub Date : 2026-06-12 Epub Date: 2026-05-18 DOI: 10.1021/acsestengg.6c00024

Isaac G. Musaazi, Lauren B. Stadler, Jeseth Delgado Vela

{"title":"Quantifying Resilience and Sustainability of Different Plant Operations at a Wastewater Plant Experiencing Wet Weather","authors":"Isaac G. Musaazi, Lauren B. Stadler, Jeseth Delgado Vela","doi":"10.1021/acsestengg.6c00024","DOIUrl":"10.1021/acsestengg.6c00024","url":null,"abstract":"Water resource recovery facilities(WRRFs) face growingchallengesmaintaining stable nutrient removal under variable wet weather conditions.This study evaluates those challenges using data from a five-stageBardenpho plant (7.5 MGD design capacity). Dynamic process simulationwas used to measure system response to hydraulic disturbances throughthree resilience metrics: maximum performance reduction (mpr), recovery time (tr), and recovery phase performance reduction (rppr). Life cycle assessment (LCA) was then applied to assess how differentoperational responses affect environmental impacts, focusing exclusivelyon the liquid treatment train and excluding solids treatment processes.The results showed that direct N2O emissions dominatedthe plant carbon footprint within this system boundary, exceedingCH4 contributions by several orders of magnitude. Wet weatherprolonged recovery times to about 6 days and raised global warmingand eutrophication impacts by 20–60%. Flow equalization improvedresilience by shortening recovery time and lowering environmentalburdens by up to 40% through more stable hydraulic loading and reducedaeration demand. Chemical addition further improved nutrient removalbut created additional upstream impacts from reagent production. Overall,resilience and environmental sustainability were not always aligned;the plant could maintain stable performance (low mpr) while still generating higher indirect emissions. These findingssupport the development of nutrient management strategies that balanceoperational stability with environmental sustainability.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 6","pages":"1797–1808"},"PeriodicalIF":6.3,"publicationDate":"2026-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148656491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Proteinase K-Conjugated Liposomes as Stable Catalysts for Depolymerization of Poly(l-lactic acid) Plastics 蛋白酶k偶联脂质体作为聚乳酸塑料解聚的稳定催化剂

IF 6.3

ACS ES&T engineering Pub Date : 2026-06-12 Epub Date: 2026-05-29 DOI: 10.1021/acsestengg.5c01099

Shunsuke Takahashi, Makoto Yoshimoto

{"title":"Proteinase K-Conjugated Liposomes as Stable Catalysts for Depolymerization of Poly(l-lactic acid) Plastics","authors":"Shunsuke Takahashi, Makoto Yoshimoto","doi":"10.1021/acsestengg.5c01099","DOIUrl":"https://doi.org/10.1021/acsestengg.5c01099","url":null,"abstract":"Controlling enzymatic depolymerization of poly(l-lacticacid) (PLLA) contributes to ensure the sustainability of PLLA-basedbiodegradable plastics, although an approach to use functionally modifiedenzymes remains at an early stage. In the present work, poly(ethyleneglycol) (PEG)-tethered liposomes covalently conjugated with proteinaseK (proK) were prepared and applied to catalyze the degradation ofPLLA films as well as native β-galactosidase and heat-denaturedbovine serum albumin. The activity of a dilute liposome-conjugatedproK dispersion ([proK] = 0.17 μM) was stably available at pH= 8.0 and 25–45 °C in a polypropylene (PP) container,whereas free proK at the same enzyme concentration could not functiondue to the adsorption to PP. Liposome-conjugated proK showed consistentlylower catalytic activity than free proK at the initial phase of theabove degradation reactions partly because of steric hindrance causedby lipid membranes. Nevertheless, liposome-conjugated proK catalyzedthe depolymerization of PLLA films at 25 °C and the initial pHof 8.0. The adsorptive interaction between proK and PLLA, which wasindicated to be the cause of the deactivation of free proK, was weakenedfor liposome-conjugated proK because of the hydrophilic environmentprovided by PEG-tethered lipid membranes. The proK-to-lipids ratioand the properties of PEG chains were indicated to determine the balancebetween the activity and stability of liposome-conjugated proK inthe prolonged PLLA depolymerization. Furthermore, the difference inintrinsic interaction of liposome-conjugated proK with PLLA or PPmay be utilized to facilitate PLLA depolymerization in the presenceof PP.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 6","pages":"1754–1766"},"PeriodicalIF":6.3,"publicationDate":"2026-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148672619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reconsidering Septic Tanks 重新考虑化粪池

IF 6.3

ACS ES&T engineering Pub Date : 2026-06-12 Epub Date: 2026-05-26 DOI: 10.1021/acsestengg.6c00129

Tibo Roelants, Min Zheng, Bart Saerens, Myrthe Van Hal, Mark C. M. van Loosdrecht, Zhiguo Yuan, Eveline I. P. Volcke

{"title":"Reconsidering Septic Tanks","authors":"Tibo Roelants, Min Zheng, Bart Saerens, Myrthe Van Hal, Mark C. M. van Loosdrecht, Zhiguo Yuan, Eveline I. P. Volcke","doi":"10.1021/acsestengg.6c00129","DOIUrl":"https://doi.org/10.1021/acsestengg.6c00129","url":null,"abstract":"Septic tanks remainwidely used as decentralized sanitation systems,yet their environmental implications are often underestimated. Thisperspective reassesses their role regarding three main aspects. First,the traditional advantages of septic tanks are highly context-specific.While they provide effective solid retention and promote partial carbonbreakdown under anaerobic conditions, these benefits are most relevantin the absence of sewer infrastructure. When connected to the sewersystem, their use provides limited benefit and may introduce unintendedsystem-level drawbacks. Moreover, the removal of biodegradable carbonin septic tanks lowers the biochemical oxygen demand over nitrogen(BOD/N) ratio entering centralized wastewater treatment plants, increasingthe need for external carbon dosing for denitrification and addingsubstantial financial and indirect greenhouse gas burdens. Furthermore,septic tanks are a significant source of methane. Measured emissionsare of similar or even greater magnitude than those from centralizedwastewater treatment and represent non-negligible shares of city-and country-scale greenhouse gas inventories. Overall, it is concludedthat septic tanks warrant reconsideration when connected to a sewer.Improved inventories, refined emission models, and an evaluation ofsewer methane dynamics are necessary to inform future management strategiesand to determine when septic tanks should be phased out or betterkept in operation.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 6","pages":"1741–1753"},"PeriodicalIF":6.3,"publicationDate":"2026-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148672666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Degradation of Phosphonate Antiscalants in Reverse Osmosis Concentrate through Oxygenation of Fe(II)-Bearing Biotite 含铁黑云母氧化降解反渗透精矿中膦酸盐抗垢剂。

IF 6.3

ACS ES&T engineering Pub Date : 2026-06-12 Epub Date: 2026-05-15 DOI: 10.1021/acsestengg.6c00154

Lai Wei, Yifan Ding, Wencong Xing, Huize Xue, Omowunmi Sadik, Wen Zhang, Lijie Zhang

{"title":"Degradation of Phosphonate Antiscalants in Reverse Osmosis Concentrate through Oxygenation of Fe(II)-Bearing Biotite","authors":"Lai Wei, Yifan Ding, Wencong Xing, Huize Xue, Omowunmi Sadik, Wen Zhang, Lijie Zhang","doi":"10.1021/acsestengg.6c00154","DOIUrl":"10.1021/acsestengg.6c00154","url":null,"abstract":"Phosphonates arewidely used in reverse osmosis (RO) and otherfiltration processes, making their removal critical for effectivemanagement of RO concentrate. While oxygenation of Fe(II)-bearingminerals can generate powerful oxidants, such as hydroxyl radical(•OH) and high-valent Fe species, their efficacy in degradingphosphonates under the complex water chemistry of RO concentrate remainsunclear. Here, we investigated the degradation of two representativephosphonates─nitrilotri(methylphosphonic acid) (NTMP) and iminodi(methylphosphonicacid) (IDMP)─using oxygenation of Fe(II)-bearing biotite. NTMPdegraded rapidly in the presence of biotite under oxic conditions,while IDMP showed negligible degradation. Mechanistic analyses indicatethat both •OH and high-valent Fe species contributed substantiallyto NTMP degradation, driven by the oxygenation of biotite structuralFe(II). Despite the complex composition of RO concentrate, NTMP degradationremained relatively consistent in the presence of biotite under neutralpH, although with slower kinetics. Moreover, the addition of acetateand oxalate accelerated NTMP degradation, even in RO concentrate.Overall, these findings reveal a mineral-mediated, sustainable Fenton-likepathway for phosphonate degradation and highlight the potential ofFe(II)-bearing minerals as a greener strategy for managing phosphonatesin RO concentrate, thereby reducing associated environmental impacts.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 6","pages":"1839–1848"},"PeriodicalIF":6.3,"publicationDate":"2026-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148269812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Leveraging Anaerobic Digestion Solids Retention Time to Mitigate Recalcitrant Dissolved Organic Compounds Formed during the Maillard Reaction at Various Thermal Hydrolysis Temperatures 利用厌氧消化固体滞留时间来减轻美拉德反应在不同热水解温度下形成的难溶性有机化合物

IF 6.3

ACS ES&T engineering Pub Date : 2026-06-12 Epub Date: 2026-05-01 DOI: 10.1021/acsestengg.6c00031

Yitao Li, Ankit Pathak, Rafael Iboleon, Yewei Sun, Kendra Sveum, Bradley Schmitz, Wendell Khunjar, Zhi-Wu Wang

{"title":"Leveraging Anaerobic Digestion Solids Retention Time to Mitigate Recalcitrant Dissolved Organic Compounds Formed during the Maillard Reaction at Various Thermal Hydrolysis Temperatures","authors":"Yitao Li, Ankit Pathak, Rafael Iboleon, Yewei Sun, Kendra Sveum, Bradley Schmitz, Wendell Khunjar, Zhi-Wu Wang","doi":"10.1021/acsestengg.6c00031","DOIUrl":"10.1021/acsestengg.6c00031","url":null,"abstract":"Recalcitrant dissolved organic compounds formed duringthermalhydrolysis pretreatment (THP) of municipal wastewater sludge posea challenge to water resource recovery facilities (WRRFs) that seekto achieve stringent discharge standards. This study investigatedthe effects of anaerobic digester solids retention time (SRT) at 15and 23 days on the aerobic recalcitrance of Maillard reaction-deriveddissolved organic compounds formed during THP operated at temperaturesof 135, 150, and 165 °C. Over 460 days of continuous THP andanaerobic digester operation, results revealed that digester SRT stronglyinfluenced the biodegradability of these THP-derived recalcitrantdissolved organic compounds. In particular, extending the digesterSRT from 15 to 23 days enhanced the degradation of these compoundsthat can be resistant to aerobic degradation but biodegradable underanaerobic conditions. Furthermore, using a digester SRT of 23 daysto treat sludge produced from lower upstream THP temperatures (e.g.,135 °C) resulted in more effective aerobic degradation of suchdissolved organic compounds. This study highlights the previouslyoverlooked but pivotal role of digester SRT in managing THP-derivedrecalcitrant compounds in WRRF effluent, providing an additional operationallever beyond the THP temperature for mitigating sidestream impactsunder different treatment priorities.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 6","pages":"1809–1817"},"PeriodicalIF":6.3,"publicationDate":"2026-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148666533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical Nutrient Recovery for the Food–Energy–Water Nexus at Municipal Wastewater Facilities: Multivariate Analyses of Seasonal Sampling and Reactor Performance 城市污水处理设施中食物-能量-水关系的电化学营养物回收：季节性采样和反应器性能的多变量分析。

IF 6.3

ACS ES&T engineering Pub Date : 2026-06-12 Epub Date: 2026-05-05 DOI: 10.1021/acsestengg.6c00096

Sana Heydarian, Lawrence O. Ajayi, Syed Asad Abbas, Kody D. Wolfe, Rida Benhaddou, Jason P. Trembly, Damilola A. Daramola

{"title":"Electrochemical Nutrient Recovery for the Food–Energy–Water Nexus at Municipal Wastewater Facilities: Multivariate Analyses of Seasonal Sampling and Reactor Performance","authors":"Sana Heydarian, Lawrence O. Ajayi, Syed Asad Abbas, Kody D. Wolfe, Rida Benhaddou, Jason P. Trembly, Damilola A. Daramola","doi":"10.1021/acsestengg.6c00096","DOIUrl":"10.1021/acsestengg.6c00096","url":null,"abstract":"Digester-equipped municipal wastewater facilities generaterecyclestreams with high nutrient loads that increase energy consumptionand can cause environmental pollution. The reduction of these loadsthrough electrochemical nutrient recovery (ENR) could enhance thefood–energy–water nexus by producing fertilizer (struvite).This study investigated the recovery process through a 1 year samplingof recycle streams and the implementation of nutrient recovery. Timeseries analyses showed that P (as orthophosphate) concentration wastime-variant in digester effluent streams, while N (as ammonia) concentrationwas time-variant in only the aerobic system. Furthermore, these twonutrient concentrations did not correlate in any of the recycle streams.Subsequent multivariate screening analyses identified anode type,NH+4 concentration, cathodic potential, P concentration, and temperatureas most significant for ENR. Finally, the optimum conditions of cathodicpotential, anode area-to-volume ratio, and temperature applied toa real recycle stream resulted in 95% P recovery with 0.03 kWh/kgP. This energy consumption is significantly lower than process energyfor conventional P fertilizers (1.1 kWh/kg P) and chemical recoveryprocesses at scale (1.7–12.9 kWh/kg P). Overall, this studyrecommended specific process controls for nutrient recovery, expandedthe variables evaluated for ENR, and demonstrated the ability to significantlyimpact energy demand associated with P-based fertilizers.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 6","pages":"1818–1829"},"PeriodicalIF":6.3,"publicationDate":"2026-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148269829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ray-Tracing Simulation and Validation of UV–C Delivery from LED-Coupled Side-Emitting Fibers in Air or Water led耦合侧发射光纤在空气或水中UV-C传输的光线追踪模拟与验证

IF 6.3

ACS ES&T engineering Pub Date : 2026-06-12 Epub Date: 2026-05-04 DOI: 10.1021/acsestengg.6c00187

Nora D. Shapiro, Zhe Zhao, Emma Westerhoff, Ken Niimi, Paul Westerhoff

{"title":"Ray-Tracing Simulation and Validation of UV–C Delivery from LED-Coupled Side-Emitting Fibers in Air or Water","authors":"Nora D. Shapiro, Zhe Zhao, Emma Westerhoff, Ken Niimi, Paul Westerhoff","doi":"10.1021/acsestengg.6c00187","DOIUrl":"10.1021/acsestengg.6c00187","url":null,"abstract":"Side-emitting optical fibers (SEOFs)offer a promising approachfor delivering germicidal Ultraviolet-C (UV–C) light to complexsurfaces in water systems (e.g., tubing, curved surfaces) where biofilmscan grow. However, SEOFs typically exhibit nonuniform irradiance alongtheir length, complicating system design. To enable efficient designof UV–C SEOFs, we characterized the spatial irradiance of a280 nm light-emitting diode (LED) coupled to an SEOF. Irradiance alongthe fiber length was measured in air using a calibrated spectrometer,and total side-emitted optical power was quantified in water usingchemical actinometry. A two-dimensional, first-principles ray-tracingsimulation was developed to model light propagation, entry, emission,and loss from the LED through the SEOF. The simulation successfullypredicts experimental values of the in-air irradiance trend withinthe 5th-95th percentile of each datum and the total in-water side-emittedpower (within 6.4% error of the experimental average). We predictedotherwise unmeasurable under-water irradiance delivered to a surfaceby applying the simulation to a prior biofilm inhibition study ina pressurized water-filled reactor. The open-source code is availablefor broader use. Our findings advance the design of UV–C deliverysystems by improving the understanding of irradiance distributionon treatment surfaces when the fiber is submerged, enabling more effectivedeployment of SEOFs in water treatment applications.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 6","pages":"1882–1894"},"PeriodicalIF":6.3,"publicationDate":"2026-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148634096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Water Purification from Industrial Effluents Using Gas Hydrates: Process Demonstration of a Continuous Bench Scale Operation 利用天然气水合物净化工业废水：连续实验规模操作的过程演示

IF 6.3

ACS ES&T engineering Pub Date : 2026-06-12 Epub Date: 2026-04-20 DOI: 10.1021/acsestengg.5c01140

Subhash Kumar Sharma, Nandakumar Thenmani, Ju Dong Lee, Rajnish Kumar

{"title":"Water Purification from Industrial Effluents Using Gas Hydrates: Process Demonstration of a Continuous Bench Scale Operation","authors":"Subhash Kumar Sharma, Nandakumar Thenmani, Ju Dong Lee, Rajnish Kumar","doi":"10.1021/acsestengg.5c01140","DOIUrl":"10.1021/acsestengg.5c01140","url":null,"abstract":"Industrialbrines from petrochemical and allied sectors are anescalating sustainability challenge, limiting circular water use andprogress toward zero-liquid-discharge and decarbonization targets.Their high salinity and refractory organics make conventional membraneand thermal processes energy and carbon-intensive. We present a continuousdual-reactor gas-hydrate crystallization platform for membrane free,nonthermal purification that enables molecularly selective water recoveryunder mild conditions (278 K; 0.60–0.85 MPa). Through vapor–liquidinterfacial engineering, structure sII hydrates rapidly form at engineeredinterfaces via Capillarity-driven nucleation, while phase evolutionis governed by Ostwald ripening kinetics. Using a mixed propane andHFC-134a gas pair, we achieve in a single pass >65% overall waterrecovery (7–10 L·h–1) and >50% water-to-hydrateconversion. The recovered water shows 84–93% removal of totaldissolved solids, chemical oxygen demand, and ammoniacal nitrogen.Mechanistically, hydrate formation and selectivity are streamlinedusing hydrate thermodynamics and cage occupancy. The specific energyrequirement is 3.88 kWh·m–3, with a globalwarming potential of 2.79 kg·CO2-eq·m–3 and a levelized cost of $1.65 m–3, demonstratingsuperior performance relative to representative membrane and thermalbaselines (4–15 kg CO2-eq·m–3; 30–45% recovery). These results establish clathroseparationas a new, low-exergy class of phase-selective crystallization forsustainable industrial water reuse, advancing SDGs 6, 9, and 12.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 6","pages":"1767–1782"},"PeriodicalIF":6.3,"publicationDate":"2026-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148656266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent Advances in Biochar-Mediated Enhancement of Anaerobic Digestion: Performance, Mechanisms, and Sustainability Prospects 生物炭促进厌氧消化的最新进展：性能、机制和可持续性前景

IF 6.3

ACS ES&T engineering Pub Date : 2026-06-12 Epub Date: 2026-05-12 DOI: 10.1021/acsestengg.6c00106

Lin Deng, Tian Lan, Yu-Fei Meng, Wei-Tong Ren, Qing-Lian Wu, Wan-Qian Guo

{"title":"Recent Advances in Biochar-Mediated Enhancement of Anaerobic Digestion: Performance, Mechanisms, and Sustainability Prospects","authors":"Lin Deng, Tian Lan, Yu-Fei Meng, Wei-Tong Ren, Qing-Lian Wu, Wan-Qian Guo","doi":"10.1021/acsestengg.6c00106","DOIUrl":"10.1021/acsestengg.6c00106","url":null,"abstract":"With global economic growth, energy demand has significantlyincreased.Anaerobic digestion (AD) is crucial for converting organic waste intorenewable bioenergy, but its efficiency is often constrained by challengeslike ammonia inhibition, volatile fatty acids (VFAs) accumulation,and microbial instability. This review consolidates recent progressin using biochar as an additive to augment AD performance, unravelingits dual-edged impacts and underlying mechanisms. Biochar, derivedfrom diverse feedstocks via pyrolysis or hydrothermal carbonization,enhances AD through multiple pathways: reducing ammonia toxicity viaphysical adsorption and microbial community modulation; alleviatingVFAs stress by buffering pH and accelerating VFAs degradation; enrichingfunctional methanogens through its porous habitat; and facilitatingdirect interspecies electron transfer to optimize energy metabolism.Mechanistic analyses reveal that biochar’s high specific surfacearea, surface functional groups, and conductivity are critical forthese effects. In addition, this paper discusses the economic feasibilityand long-term sustainability of using biochar in AD systems, whileidentifying existing research gaps and suggesting directions for futurestudies. This review aims to provide up-to-date knowledge to improveAD efficiency, identify current research limitations, and proposerecommendations for advancing more environmentally friendly and efficientenergy recovery strategies.","PeriodicalId":7008,"journal":{"name":"ACS ES&T engineering","volume":"6 6","pages":"1729–1740"},"PeriodicalIF":6.3,"publicationDate":"2026-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148624825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0