Journal of water process engineering最新文献

{"title":"Investigation on novel p-Cu2O@n-CeO2 sensitized n-ZnS: Influence of ZnS:CeO2:Cu2O ratio, boosted adsorptive-solar assisted photo-degradation for anionic and cationic dyes, and antimicrobial activity","authors":"Heba Ali","doi":"10.1016/j.jwpe.2025.108762","DOIUrl":"10.1016/j.jwpe.2025.108762","url":null,"abstract":"<div><div>This study examines the influence of modifying n-ZnS with n-CeO₂ alone or in combination with p-Cu₂O to develop novel ZnS/CeO₂/Cu₂O triheterojunctions for superior remediation of organic dyes (CR, CV, MB, RhB) and antimicrobial activity for the first time. ZnS was initially modified with hydrothermally prepared n-CeO₂ in different ratios to create ZnS/CeO₂ binary structures (ZC2:1, ZC1:1, ZC1:2, ZC1:4). Subsequently, p-Cu₂O was synthesized as a second modifier for the optimal ZC1:2 binary structure to prepare new ternary ZnS/CeO₂/Cu₂O nanocomposites (ZC1:2Cu0.5, ZC1:2Cu1, ZC1:2Cu1.5, ZC1:2Cu2 and ZC1:2Cu3). The samples were characterized using XRD, XPS, EDX, HRTEM, UV–Vis, PL, and BET analysis. ZC1:2Cu1 triheterojunction exhibited a significant reduction in the bandgap (2.18 eV), a large surface area, and enhanced electron-hole separation character. ZC1:2Cu1 demonstrated 98.2 % removal efficiency for concentrated anionic CR dye (100 mg/L) based on the adsorption and photodegradation characteristics with good reusability. The degradation for cationic dyes were 90.1 % for 10 mg/L CV, 85.7 % for 10 mg/L MB, and 93.7 % for 5 mg/L RhB. Mott-Schottky plots determined semiconductors' VB and CB positions; accordingly, a plausible mechanism for photocatalytic dye destruction over ZC1:2Cu1 has been proposed. Finally, ZC1:2Cu1 exhibited enhanced antimicrobial activity relative to ZnS and ZC1:2.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108762"},"PeriodicalIF":6.7,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Alginate-like extracellular polymers recovery from industrial activated sludge: characteristics and application potential","authors":"Shaoqing Zhang ,&nbsp;Jiesi Ding ,&nbsp;Yucheng Feng ,&nbsp;Liqiu Zhang ,&nbsp;Shugeng Li ,&nbsp;Naga Raju Maddela ,&nbsp;Fangang Meng","doi":"10.1016/j.jwpe.2025.108759","DOIUrl":"10.1016/j.jwpe.2025.108759","url":null,"abstract":"<div><div>Alginate-like extracellular polymers (ALEs) recovery from excess sludge produced in wastewater treatment plants (WWTPs) has drawn considerable attention as they offer a sustainable strategy for achieving a circular economy. However, the prospect of ALEs recovery from activated sludge of industrial WWTPs remains to be elucidated. In this study, the yields, physicochemical properties and potential applications of ALEs from industrial excess sludge were investigated. The results showed that ALEs' yields were ranged from 140 to 267 mg/g·VSS, and the alginate equivalents of the extracted ALE were 29 %–48 %. Ca²⁺-ALE hydrogels were immediately formed by cross-linking ALEs with CaCl₂, suggesting their high ionic gel-forming property. Fourier Transform Infrared (FTIR) and Raman spectral analyses showed that ALE possessed abundant functional groups related to protein and polysaccharide, and the similarities of functional groups between ALEs and commercial alginate were 40 %–61 %. Elemental analysis using Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) revealed that the extracted ALEs possessed relatively low concentrations of heavy metals, which ensured its potential application. Based on the film-forming property, amphiphilicity and hydrophobicity, the extracted ALEs could be applied as a water-proof surface coating. Additionally, the ALEs hydrogel beads showed great absorption capacities for Cd²⁺ and Cu²⁺, being 132.31 ± 0.40 mg/g and 71.85 ± 0.40 mg/g, respectively, which were comparable to those of commercial alginate-based gel beads. This study expands our understanding of the ALEs biomaterials recovery and applications from industrial excess sludge.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108759"},"PeriodicalIF":6.7,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient removal of sulfamethoxazole by boron-doped porous biochar-activated persulfate: simultaneously enhanced adsorption and non-radical pathways","authors":"Lei Qin ,&nbsp;Tao Tong ,&nbsp;Danlian Huang ,&nbsp;Mingming Zhang ,&nbsp;Dengsheng Ma ,&nbsp;Xing Fan ,&nbsp;Hao Deng ,&nbsp;Guangjie Lv ,&nbsp;Mingyang Ma ,&nbsp;Ming Yan","doi":"10.1016/j.jwpe.2025.108708","DOIUrl":"10.1016/j.jwpe.2025.108708","url":null,"abstract":"<div><div>The properties of catalysts and activation pathway are crucial in persulfate-based advanced oxidation processes. In this study, boron-doped porous biochar (BPC-0.25), featuring adsorption-catalysis dual function, was successfully synthesized to activate peroxydisulfate (PDS) for sulfamethoxazole (SMX) degradation. The results showed that BPC-0.25 removed 83 % of SMX in 30 min via absorption and achieved complete degradation in 20 min through the synergistic effect with PDS oxidation. Meanwhile, the BPC-0.25/PDS system exhibited good anti-interference ability to adapt to complex water quality conditions. The quenching experiments, EPR tests, and electrochemical analyses collectively revealed that the PDS activation by BPC-0.25 was dominated by the generation of singlet oxygen (¹O₂) and supplemented by electron transfer process (ETP). Remarkably, boron doping enhanced the adsorption capacity and mass transfer of the catalysts due to the formation of mesoporous structure and improvement of surface affinity. Simultaneously, the content of carbonyl group (C=O) and boron doped species were increased, both of which possessed high reactivity, thereby significantly improving the catalytic performance and ETP efficiency. The results further identified that C<img>O, structural defects, and BC₃ were the main active sites in the BPC-0.25/PDS system. Besides, possible degradation pathways of SMX were proposed by mass spectrometry and theoretical calculations, while the ecotoxicity of the intermediates was predicted by ECOSAR. Overall, this work offers innovative strategies for designing efficient and environmentally friendly metal-free catalysts, provides novel insights into the activation mechanism of PDS, and presents effective approaches for wastewater remediation.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108708"},"PeriodicalIF":6.7,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The influence of water flow disturbance form on the granulation of algae sludge: Granulation property, treatment effect and algae biological structure","authors":"Peng-fei Yu,&nbsp;Ao Wang,&nbsp;Hai-wen Sun,&nbsp;Ding Wang,&nbsp;Xing-guan Ma,&nbsp;Yu-jia Wang,&nbsp;Bo-mei Hu,&nbsp;Li-yao Han,&nbsp;Yu-bo Fu,&nbsp;Dian-lin Jiang,&nbsp;Shi-gang Tu","doi":"10.1016/j.jwpe.2025.108691","DOIUrl":"10.1016/j.jwpe.2025.108691","url":null,"abstract":"<div><div>Algal-bacterial granular sludge (ABGS) is a research hotspot in sewage treatment. Water flow disturbance is crucial for sludge granulation in the algae-bacteria system, yet the effects of different disturbance modes on ABGS formation remain unclear. Horizontal stirring and supernatant reflux were used to start the ABGS system, the results showed the mode of horizontal disturbance combined with aeration is more conducive to the enrichment of algae and the formation of granular faster(80 day granulation was essentially completed), and the granular size is larger(more than 1.5 mm), high biomass (mixed liquid suspended solids for 8180 ± 183.61 mg/L) and good settleability (sludge volume index for 25.97 ± 3.00 mL/g), the extracellular polymeric substances secretion is more(147.32 ± 2.30 mg/g VSS), and the removal of nitrogen (N) and phosphorus (P) by horizontal stirring mode is higher, reaching 95.64 % and 99.58 %. High-throughput analyses revealed that horizontal agitation is more conducive to the proliferation of <em>Nitrospira</em>, <em>Flavobacterium</em> and <em>Halochlorella, Scenedesmus</em> taxa associated with nitrogen and phosphorus removal. Kyoto Encyclopedia of Genes and Genomes analysis demonstrated that in the quorum sensing system of the horizontal stirring method, the (suppressor of cell division inhibitor) gene regulated Tricarboxylic Acid cycle and N, P metabolism-related genes (ammonia monooxygenase, nitrite reductase 6-pyrrolidine tetrahydrobiopterin synthase), thereby enhancing metabolic gene expression. Supernatant reflux increased the expression of Uridine Diphosphate genes associated with polysaccharide production.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108691"},"PeriodicalIF":6.7,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of the removal efficiency and energy consumption of different advanced oxidation processes on the removal of organic matter in the effluent from the biological treatment of landfill leachate","authors":"Ke Feng ,&nbsp;Ronghai Bai ,&nbsp;Yuting Li","doi":"10.1016/j.jwpe.2025.108696","DOIUrl":"10.1016/j.jwpe.2025.108696","url":null,"abstract":"<div><div>While advanced oxidation processes (AOPs) can eliminate residual recalcitrant organic compounds in effluent from the biological treatment (MBR) of landfill leachate, differences in the oxidation characteristics of the dominant active oxygen species lead to varying removal patterns. Additionally, the lack of systematic comparisons of their removal efficiency and energy consumption makes it difficult to guide practical applications. This study evaluated the removal efficiency and energy consumption of Fenton, heat/PS, ozonation (O₃ and UV/O₃), and electrooxidation (Ru-Ir/Ti-EO) AOPs, using TOC mineralization as the main index. UV–Vis and 3D-EEM spectra were analyzed to assess the removal patterns. The results show that the removal efficiency of organic matter by each process increases with increasing oxidation intensity. The removal efficiencies of color number (CN), humic acid (HA), and fulvic acid (FA) exceeded 90 %, with total organic carbon (TOC) removal ranging from 24.05 % to 91.68 % and the humification index (HIX) decreasing to 0.47–1.72. The Ru-Ir/Ti-EO process showed the highest HA and FA removal efficiency per unit mineralized mass. The Fenton and heat/PS processes can synchronize TOC removal with FA and HA degradation. The ozonation process had the strongest removal ability before organic matter mineralization. However, the high energy consumption and environmental risks of the Fenton, heat/PS, and Ru-Ir/Ti-EO processes may restrict their application potential. In contrast, the ozonation process consumes 1–2 orders of magnitude less energy, making it a preferable option for MBR effluent treatment due to its effectiveness and low risk of secondary pollution.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108696"},"PeriodicalIF":6.7,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of temperature and dissolved oxygen on nitrification in a membrane bioreactor treating urine","authors":"Weonjung Sohn ,&nbsp;Andrea Merenda ,&nbsp;A.H. Shafaghat ,&nbsp;Ibrahim El Saliby ,&nbsp;Ying Zhang ,&nbsp;Xiaodong Jia ,&nbsp;Jing Guan ,&nbsp;Sherub Phuntsho ,&nbsp;Ho Kyong Shon","doi":"10.1016/j.jwpe.2025.108721","DOIUrl":"10.1016/j.jwpe.2025.108721","url":null,"abstract":"<div><div>The biological nitrification of source-separated urine in a membrane bioreactor (MBR) is recognised as a promising approach to transform it into liquid fertiliser. However, a major limitation is the prolonged hydraulic retention time (HRT), which increases the system footprint. Given the strong dependence of nitrification on temperature and dissolved oxygen (DO) conditions, this study investigated the effects of three different temperatures (10 °C, 20 °C, and 30 °C) and DO levels (2, 4, and 6 mg/L) to determine the optimal conditions for enhanced nitrification performance and the resulting minimised HRT. Concurrently, microbial analysis was conducted to gain a comprehensive understanding of the MBR system. Results indicated that high DO levels resulted in poor biomass growth and a higher abundance of ammonia-oxidising bacteria (AOB) compared to the nitrite-oxidising bacteria (NOB), <em>Nitrospira</em>. At 10 °C, <em>Nitrosomonas</em>, was more prevalent than <em>Nitrosococcus</em> as an AOB. Conversely, at 30 °C, the relative abundance of <em>Nitrosococcus</em> increased by up to three-fold, leading to higher nitrite concentrations. Overall, the optimal conditions were found to be a temperature of 20 °C and a DO level of 4 mg/L, achieving a nitrification rate of 201 ± 49 mgN/L·d and the shortest HRT of 8 ± 2 days, with <em>Nitrosococcus</em> and <em>Nitrospira</em> as the predominant AOB and NOB, respectively. The findings suggest that optimising DO at moderate temperatures enhances nitrification while reducing aeration energy. These results inform energy-efficient operational strategies for decentralised nutrient recovery systems from human urine.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108721"},"PeriodicalIF":6.7,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Natural photodegradation characteristics of enrofloxacin in the aqueous phase and aqueous-montmorillonite systems: Insight into the effect of copper and its complex behavior","authors":"Zisong Xu ,&nbsp;Zhihan Zhu ,&nbsp;Wenyu Huang ,&nbsp;Shiping Wei ,&nbsp;Gilles Mailhot","doi":"10.1016/j.jwpe.2025.108753","DOIUrl":"10.1016/j.jwpe.2025.108753","url":null,"abstract":"<div><div>The complexation between antibiotics and heavy metals significantly influenced the environmental photochemical behavior. Studying the evolution of complexation patterns in real environments was essential for the evaluation of composite ecological risk. Consequently, the photochemical behavior of enrofloxacin (ENR) and its interaction mechanism with Cu²⁺ were investigated in both the aqueous phase and aqueous-montmorillonite (MMT) system in this study. In the aqueous phase, ENR underwent C<img>N bond cleavage and piperazine ring opening via direct and self-sensitized degradation pathways, ultimately degrading into small molecules. The presence of Cu²⁺ induced the complexation of two ENR molecules with one Cu²⁺ through the C<img>O groups of the pyridine ring and carboxyl groups, forming ENR-Cu²⁺ complexes. At Cu²⁺ concentrations below 40 mg·L⁻¹, the Cu(OH)₂ precipitation competed with ENR for photons and inhibited photodegradation. And at concentrations above 40 mg·L⁻¹, the photoexcited electron transfer on the ENR-Cu²⁺ surfaces promoted Cu²⁺ reduction to Cu⁺ and accelerated •OH generation via the Cu²⁺/Cu⁺ cycle, and •O₂⁻ synergistically facilitating photodegradation and oxidation intermediate ([ENR-Cu²⁺]⁻•). In the aqueous-MMT system, ENR degradation primarily depended on •OH and •O₂⁻, driving defluorination and cleavage of polycyclic structures. In the presence of Cu²⁺, MMT-Cu²⁺-ENR ternary complexes formed through bridging. At Cu²⁺ concentrations below 40 mg·L⁻¹, complexation inhibited ENR photodegradation, whereas concentration above 40 mg·L⁻¹ markedly enhanced degradation efficiency. The Cu²⁺-mediated bridging effect on MMT surfaces increased ENR binding sites, further promoting Cu⁺ generation and sustaining reactive oxygen species (ROS) cycling. Synergistic effects of complexation and photodegradation collectively dominated the photochemical behavior of ENR-Cu²⁺ in aqueous and aqueous-MMT systems, providing a theoretical foundation for environmental photochemical transformation of combined contaminations.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108753"},"PeriodicalIF":6.7,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145096699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Leveraging insights into advanced oxidation processes for quaternary treatments","authors":"Cristina Corpa ,&nbsp;Guillermo Nieto ,&nbsp;M. Concepción Monte ,&nbsp;Ana Balea ,&nbsp;Isabel Lopez-Heras ,&nbsp;Angeles Blanco","doi":"10.1016/j.jwpe.2025.108711","DOIUrl":"10.1016/j.jwpe.2025.108711","url":null,"abstract":"<div><div>This study assesses the efficiency of ozonation, photocatalysis, and electrooxidation to treat the effluent from an urban WWTP spiked with a mixture of 17 cytostatic compounds at 25 μg/L. This concentration allowed us to assess the efficiency of the different treatments, reaching good sensitivity for mass spectrometry detection avoiding sample treatments and study the kinetics when necessary. The presence of cytostatic drugs in urban wastewater poses significant environmental and health concerns due to their toxicity and persistence. Conventional wastewater treatment plants (WWTPs) only remove part of these contaminants, being necessary to add additional processes. Ozonation with 200 mg O₃/L achieved over 90 % removal for ten compounds, while the removal of seven compounds was below 60 %. Photocatalysis with TiO₂ (500 mg/L) degraded four compounds by over 90 %, but the removal of the other 13 compounds was below 75 %. Electroxidation was effective for removing 14 out of the 17 compounds with an average global removal of 75 % and 94 % for eight compounds. Results showed: i) single techniques do not achieve a high removal of all contaminants, ii) all compounds were removed by at least one of the treatments, and iii) there is a fragmentation of knowledge, and most lab studies do not predict the kinetic behavior of treatments of complex wastewater. The integration of multiple technologies (e.g. electrooxidation and ozonation would be needed to enhance the overall removal efficiency of WWTPs and accomplish stricter legislation. Further studies on potential challenges as by-product toxicity and energy consumption are necessary.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108711"},"PeriodicalIF":6.7,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Water mineralization in resource-limited locations","authors":"Andrés Felipe Sánchez Rendón ,&nbsp;Simon Ponton ,&nbsp;David Brassard ,&nbsp;Emilie Bédard ,&nbsp;Jason R. Tavares","doi":"10.1016/j.jwpe.2025.108741","DOIUrl":"10.1016/j.jwpe.2025.108741","url":null,"abstract":"<div><div>Water scarcity is a global issue affecting communities worldwide, as seen in events such as the 2018 Cape Town water crisis, the 2021 Quebec water restrictions, the recent water shortage in Catalonia, and the Neskantaga First Nations' 30-year struggle without drinkable running water. This highlights the urgent need for sustainable water resource management. Alternative water sources, such as reverse osmosis, rainwater, or atmospheric water harvesting offer promising solutions, though challenges remain concerning the mineralization these types of waters due to their low concentrations of essential minerals like calcium and magnesium. While conventional mineralization methods exist, this study explores an alternative approach by emphasizing the use of native materials to favor resource-constrained communities with limited access to commercial consumables. To assess water mineral dissolution, this work tested five native materials (soil, beige sand, red sand, clay, and gravel), two commercial materials (calcite and Corosex™), and a commercial remineralization filter. Results show that soil (at a dosage of 0.03 g/mL) and red sand (0.25 g/mL) have potential as native materials for adjusting and achieving optimal levels of water hardness (182 mg CaCO₃/L and 265 mg CaCO₃/L, respectively). Furthermore, red sand contains a higher proportion of magnesium ions, an essential nutrient with recognized health benefits, ensuring that World Health Organization mineralization guidelines are met. These native materials show promise for developing a low-consumable mineralization system that could be integrated with non-conventional water technologies, to meet the goal of providing water quality to communities in need, namely in survival conditions.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108741"},"PeriodicalIF":6.7,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An advanced biological system for per-and poly-fluoroalkyl substances (PFASs) removal from landfill leachate","authors":"Marco De Sanctis ,&nbsp;Sofiane El Barkaoui ,&nbsp;Subhoshmita Mondal ,&nbsp;Sapia Murgolo ,&nbsp;Michele Pellegrino ,&nbsp;Edoardo Slavik ,&nbsp;Giuseppe Mascolo ,&nbsp;Claudio Di Iaconi","doi":"10.1016/j.jwpe.2025.108740","DOIUrl":"10.1016/j.jwpe.2025.108740","url":null,"abstract":"<div><div>The present study investigated a Sequencing Batch Biofilter Granular Reactor (SBBGR) for treating four landfill leachate stocks with varying <em>per</em>- and poly-fluoroalkyl substances (PFAS) concentrations. The SBBGR, characterized by a very long sludge retention time, effectively removed conventional pollutants: 5 days-biochemical oxygen demand (99.93 %–100 %), total nitrogen (44 %–88 %), ammonia (64 %–99.8 %), and total/volatile suspended solids (70–96 % and 75–95 % respectively). However, chemical oxygen demand removal was moderate due to the high content of biorefractory compounds in all leachate stocks. The analysis showed that total PFAS₁₂ concentration, calculated as the sum of concentrations of the 12 analysed PFAS, varied across the four leachate stocks, with stock 4 having the highest concentration (about 5.5 mg L⁻¹). The removal efficiency of total PFAS₁₂ significantly improved over the course of SBBGR operation, increasing from 32 % to 94 % when treating stock 4. This improvement was attributed to continuous microbial consortium selection and increased biomass age. A notable strength of the SBBGR was its efficacy in removing long-chain PFASs, which exhibit greater hydrophobicity and a higher tendency for bioaccumulation compared to short-chain PFASs, which are more water-soluble. The SBBGR system offers a promising approach for PFASs removal due to its effective microbial consortium, high salinity resistance, and potential cost-effectiveness.</div></div><div><h3>Environmental implication</h3><div>PFASs have great relevance in the context of the urban integrated water cycle since they are compounds present in many daily uses in the civil and industrial fields. An important source of PFAS release into the environment is through the leachates, usually disposed at municipal wastewater treatment plants, which are not designed to remove PFAS. The system proposed and tested in the present study offers a promising approach for PFASs removal due to its effective microbial consortium, thereby reducing PFAS release into the environment.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108740"},"PeriodicalIF":6.7,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}