Journal of water process engineering最新文献_第10页

Vivianite precipitation in high recovery reverse osmosis desalination of anaerobic wastewater effluent 高回收率反渗透脱盐厌氧废水出水中橄榄石沉淀

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-05-01 DOI: 10.1016/j.jwpe.2025.107847

Y. Geller , O. Sivan , O. Nir

{"title":"Vivianite precipitation in high recovery reverse osmosis desalination of anaerobic wastewater effluent","authors":"Y. Geller , O. Sivan , O. Nir","doi":"10.1016/j.jwpe.2025.107847","DOIUrl":"10.1016/j.jwpe.2025.107847","url":null,"abstract":"<div><div>Wastewater reuse is essential to water supply and conservation efforts. Anaerobic membrane bioreactors (AnMBR) are emerging as an efficient treatment, enabling high effluent quality and low energy consumption. Subsequent reverse osmosis (RO) treatment can achieve potable water quality. Although mineral fouling in RO has been extensively studied, research on iron-based minerals, particularly under anaerobic conditions, remains notably scarce. Specifically, the potential fouling caused by Vivianite (Fe3(PO4)2·8H2O) – a mineral prone to precipitate and clog pipes of anaerobic wastewater streams – during high recovery RO applied to anaerobic effluents (e.g., following AnMBR) had not been systematically studied. This study used geochemical modeling and filtration experiments to test the potential mineral fouling of ferrous ion-bearing minerals in RO of synthetic and real AnMBR effluents. The geochemical model calculated mineral precipitation potential at pH 5–10 and an 85–95 % recovery ratio. Vivianite and amorphous calcium phosphate (ACP) were the dominant precipitants. Filtration experiments at varying feed Fe<sup>2+</sup> concentrations (0–10 mg/L) and pH (6.0–7.1) revealed the significant effect of these parameters on mineral fouling type and extent, agreeing with the geochemical model. Vivianite precipitated at all pH values, significantly reducing (>90 %) at pH 6 compared to pH 6.75 & 7.1. Higher Fe<sup>2+</sup> feed concentrations were correlated with a higher extent of vivianite mineral fouling. ACP was observed only at pH 7.1 since it competed with vivianite over P utilization. This research presents the first systematic investigation of vivianite mineral fouling in RO processes, informing process design of anaerobic effluent water reuse processes.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"74 ","pages":"Article 107847"},"PeriodicalIF":6.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894781","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}

引用次数: 0

Development of an alkali-producing bioelectrochemical system for sewage-polluted seawater: nutrient removal, scalant mitigation, and resource recovery 污水污染海水产碱生物电化学系统的开发：去除营养物、缓蚀剂和资源回收

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-05-01 DOI: 10.1016/j.jwpe.2025.107834

Chao-Chin Chang , Chieh-Yun Wu , Jia-Zhe Jiang , Chen-An Hsu , Chang-Ping Yu , Yi-Li Lin

{"title":"Development of an alkali-producing bioelectrochemical system for sewage-polluted seawater: nutrient removal, scalant mitigation, and resource recovery","authors":"Chao-Chin Chang , Chieh-Yun Wu , Jia-Zhe Jiang , Chen-An Hsu , Chang-Ping Yu , Yi-Li Lin","doi":"10.1016/j.jwpe.2025.107834","DOIUrl":"10.1016/j.jwpe.2025.107834","url":null,"abstract":"<div><div>The bioelectrochemical system (BES) plays a promising role in developing sustainable water treatment technologies that can treat wastewater while simultaneously generating electricity or recovering valuable resources. However, an unbalanced pH gradient between the anode and the cathode is often observed, which is considered a significant limitation that needs to be addressed. Instead of focusing on pH gradient balancing, this study first constructed a two-unit alkali-producing BES (APBES) for treating coastal sewage-polluted seawater. In Unit I, after five optimization scenarios, the system exhibited a nearly 100-fold increase in electric current production and a significant rise in pH from ∼7 to 9. The partial removal of pollutants (95 % reduction in chemical oxygen demand and 49 % reduction in conductivity) and scalants (28 % removal of sulfate and 76 % removal of calcium) was achieved. The anode and cathode effluents of Unit I were then mixed in a secondary unit (Unit II). After integrating Unit II with Unit I, the results demonstrated that APBES can not only remove pollutants and scalants but also simultaneously recover valuable resources. The removal efficiencies of calcium (80 %), sulfate (53 %), orthophosphate (51 %), and ammonium (81 %), supported by scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS) analyses, collectively reinforced this observation. This study is the first to verify the potential of APBES for the simultaneous nutrient removal and scalant mitigation, as well as the transformation of nutrients and scalants into valuable resources for sewage-polluted seawater. Further efforts are warranted to develop APBES into a versatile platform for sustainable water resource management.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"74 ","pages":"Article 107834"},"PeriodicalIF":6.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894790","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}

引用次数: 0

A novel, green method for the preparation of biodegradable PLA membranes without pore-forming agent 一种新的、绿色的制备生物可降解聚乳酸膜的方法

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-05-01 DOI: 10.1016/j.jwpe.2025.107841

Jiayi Cai , Zunbo Han , Yinjie Sun , Haoran Chen , Haoran Li , Ruoxi Wang , Yanhong Ji , Benqiao He

{"title":"A novel, green method for the preparation of biodegradable PLA membranes without pore-forming agent","authors":"Jiayi Cai , Zunbo Han , Yinjie Sun , Haoran Chen , Haoran Li , Ruoxi Wang , Yanhong Ji , Benqiao He","doi":"10.1016/j.jwpe.2025.107841","DOIUrl":"10.1016/j.jwpe.2025.107841","url":null,"abstract":"<div><div>Polylactic acid (PLA) membranes have attracted significant attention in separation technologies due to their biodegradable properties. This study proposes a novel and eco-friendly pore-forming strategy for fabricating PLA membranes by triggering the in situ reaction between CaCO<sub>3</sub> nanoparticles and citric acid during the phase inversion process. Unlike conventional methods requiring synthetic pore-forming additives, this approach leverages the sacrificial role of CaCO<sub>3</sub> and the reaction-generated CO<sub>2</sub> nanobubble to synergistically construct a porous structure. The overall porosity increases from 70.2 % (pristine PLA membrane, M0) to 85.6 % (membrane prepared from a 6 wt% CaCO<sub>3</sub>-containing casting solution, M6), while pure water flux rises dramatically from 20.1 L·m<sup>−2</sup>·h<sup>−1</sup> to 218.3 L·m<sup>−2</sup>·h<sup>−1</sup>, with bovine serum albumin rejection maintained at 96.8 %. Furthermore, the flux recovery rate improves from 53.2 % (M0) to 71.2 % (M6), demonstrating enhanced antifouling properties. This entirely green fabrication process, employing only natural CaCO<sub>3</sub> and citric acid, represents a significant advancement in sustainable membrane technology and provides a viable route for developing high-performance biodegradable separation membranes.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"74 ","pages":"Article 107841"},"PeriodicalIF":6.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143890610","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}

引用次数: 0

Enhanced removal of short-chain perfluoroalkyl substance using aminated waste-derived sorbent 利用胺化废物衍生吸附剂加强对短链全氟烷基物质的去除

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-05-01 DOI: 10.1016/j.jwpe.2025.107829

Youngwoo Kwak , Min-suk Oh , Changwoo Nam

{"title":"Enhanced removal of short-chain perfluoroalkyl substance using aminated waste-derived sorbent","authors":"Youngwoo Kwak , Min-suk Oh , Changwoo Nam","doi":"10.1016/j.jwpe.2025.107829","DOIUrl":"10.1016/j.jwpe.2025.107829","url":null,"abstract":"<div><div><em>Per</em>- and polyfluoroalkyl substances (PFAS) are persistent environmental pollutants threatening human health and ecosystems. This study examines the removal of perfluorooctanoic acid (PFOA) and perfluorobutanoic acid (PFBA), representing long-chain and short-chain PFAS respectively, from aqueous solutions using waste-derived char produced through <em>co</em>-pyrolysis of polyvinyl chloride (PVC) and layered double hydroxide (LDH) grown on cellulose (LDH@cellulose). LDH@cellulose incorporation enhanced the char's thermal stability and specific surface area. Adsorption kinetics revealed that PFBA exhibited faster equilibrium times and higher affinity for aminated sorbent, while PFOA showed a preference for pyrolyzed sorbent. These findings were attributed to the influence of PFAS chain length on their interactions with the surface properties of the sorbents. The used sorbents were regenerated using desorption solvents. Additionally, PFAS present in the eluate were found to be degradable in polar aprotic solvent environments. These findings highlight the importance of surface wettability in PFAS adsorption and emphasize the potential for removing PFAS present in solvents.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"74 ","pages":"Article 107829"},"PeriodicalIF":6.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143890614","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}

引用次数: 0

Integrated process of Tetrasphaera-dominated enhanced biological phosphorus removal and sulfur autotrophic denitrification in a single reactor to treat VFAs-free wastewater: Feasibility, performance and mechanism 单反应器强化生物除磷加硫自养反硝化工艺处理无vfas废水的可行性、性能及机理

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-05-01 DOI: 10.1016/j.jwpe.2025.107812

Hongjun Liu , Wei Zeng , Gangxin Chen , Qingan Meng , Jiayu Zhang , Zhaoyang Bi , Yongzhen Peng

{"title":"Integrated process of Tetrasphaera-dominated enhanced biological phosphorus removal and sulfur autotrophic denitrification in a single reactor to treat VFAs-free wastewater: Feasibility, performance and mechanism","authors":"Hongjun Liu , Wei Zeng , Gangxin Chen , Qingan Meng , Jiayu Zhang , Zhaoyang Bi , Yongzhen Peng","doi":"10.1016/j.jwpe.2025.107812","DOIUrl":"10.1016/j.jwpe.2025.107812","url":null,"abstract":"<div><div>This study investigated the toxicity response in <em>Tetrasphaera</em>-dominated enhanced biological phosphorus removal (EBPR(T)) under different thiosulfate stress conditions and developed a one-stage process combining EBPR(T) and thiosulfate-driven sulfur autotrophic denitrification (SADN) in a single reactor to achieve advanced nutrient removal from low COD/N and VFAs-free wastewater. Batch experiments demonstrated that 120 mg/L thiosulfate was barely toxic to the EBPR(T) system, while more than 200 mg/L thiosulfate disrupted the physiological activities related to cell membrane integrity, esterase activity, early apoptosis, membrane potential, and metabolism in functioning microorganisms, leading to the deterioration of the EBPR(T) system. The one-stage EBPR(T) - SADN process was operated for 90 days under 120 mg/L thiosulfate, during which effluent total inorganic nitrogen (TIN) and PO<sub>4</sub><sup>3–</sup>P were less than 4 mg/L and 0.42 mg/L, respectively. High transcriptional activity of clades 1 and 2 of <em>Tetrasphaera</em> ensured effective PO<sub>4</sub><sup>3–</sup>P removal performance under 120 mg/L thiosulfate stimulation. As the dominant microorganisms, <em>Tetrasphaera</em> (14.35 %) and <em>Thiobacillus</em> (8.37 %) were assisted by conventional PAOs and heterotrophic denitrifying microorganisms to achieve efficient nutrient removal. The results indicate that the one-stage EBPR(T) - SADN process with 120 mg/L thiosulfate stress has significant potential for nutrient removal from low COD/N and VFAs-free wastewater.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"74 ","pages":"Article 107812"},"PeriodicalIF":6.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143902552","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}

引用次数: 0

Laccase immobilization onto MIL–100 (Fe) and chitosan nanofibers: Fabrication, characterization, and investigation of the potential for bisphenol A removal MIL-100 （Fe）和壳聚糖纳米纤维固定化漆酶：制备、表征和去除双酚A潜力的研究

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-05-01 DOI: 10.1016/j.jwpe.2025.107827

Seyedeh Masoumeh Kiaee Nasab Abkenar , Seyed Mohsen Dehnavi

{"title":"Laccase immobilization onto MIL–100 (Fe) and chitosan nanofibers: Fabrication, characterization, and investigation of the potential for bisphenol A removal","authors":"Seyedeh Masoumeh Kiaee Nasab Abkenar , Seyed Mohsen Dehnavi","doi":"10.1016/j.jwpe.2025.107827","DOIUrl":"10.1016/j.jwpe.2025.107827","url":null,"abstract":"<div><div>Bisphenol A (BPA), a micropollutant in water sources, poses serious environmental and health threats. Due to the limitations of conventional removal methods, enzymatic degradation using laccase has gained attention. This study aimed to enhance laccase stability and reusability by encapsulating it within MIL–100(Fe) metal-organic frameworks (MOFs), followed by immobilization in chitosan nanofibers. The resulting laccase@MIL–100(Fe)@chitosan nanocomposite was evaluated for BPA removal. The enzyme loading capacity was measured, and the activity of the free enzyme and the enzyme immobilized in the nanocomposite matrix was compared at different temperatures, pH levels, and times. The ideal pH for both free and immobilized enzymes in the nanocomposite was found to be 4. The enzyme activity storage time showed that laccase immobilized on a nanocomposite substrate was able to maintain 30 % of its activity over 28 days. Compared to chitosan and MIL–100(Fe)@chitosan, the final composite showed 1.5- and 1.3-times higher removal efficiency, respectively. The nanocomposite removed 94 % of BPA at an initial concentration of 1 mg/L and 90 % at 10 mg/L under optimal conditions (pH 4.0, 30 °C, 12 h), primarily via adsorption. The system retained over 80 % of its removal capacity after five reuse cycles. These findings demonstrate that laccase immobilization in MIL–100(Fe)@chitosan significantly enhances enzymatic degradation of BPA, offering a promising eco-friendly approach for wastewater treatment.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"74 ","pages":"Article 107827"},"PeriodicalIF":6.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143902553","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}

引用次数: 0

Atom doping and alkali etching to construct defect-rich electrocatalysts for efficient overall water splitting 原子掺杂和碱腐蚀构建富缺陷电催化剂的高效整体水分解

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-05-01 DOI: 10.1016/j.jwpe.2025.107856

Yuying Yang, Yanzhe Chen, Qiannan Sun, Yilun He, Daying Xu, Yaling Xiong, Zhongai Hu

引用次数: 0

Enhanced PVDF/ZIF-8 membrane with embellished microcrystals for wastewater treatment and antibacterial applications 带有修饰微晶的增强型PVDF/ZIF-8膜用于废水处理和抗菌应用

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-05-01 DOI: 10.1016/j.jwpe.2025.107822

Mangkorepla Changkija, Debarun Dhar Purkayastha

{"title":"Enhanced PVDF/ZIF-8 membrane with embellished microcrystals for wastewater treatment and antibacterial applications","authors":"Mangkorepla Changkija, Debarun Dhar Purkayastha","doi":"10.1016/j.jwpe.2025.107822","DOIUrl":"10.1016/j.jwpe.2025.107822","url":null,"abstract":"<div><div>Membrane-based materials with distinct wetting properties are essential for separating oils from water. However, a significant number of these materials are prone to fouling from organic and biological contaminants. In this work, we introduce a novel and efficient approach to produce a nanofibrous polyvinylidene fluoride (PVDF) membrane embellished with zeolite imidazolate framework-8 (ZIF-8) microcrystals to facilitate the segregation of emulsions and oil-water mixtures. The PVDF/ZIF-8 membrane demonstrated remarkable superhydrophilic-underwater superoleophobic characteristics, leading to its effective resistance against oil fouling. Simultaneously, it displayed outstanding performance in segregating a range of oil-water mixtures and emulsions, achieving a separation efficiency of approximately 99 % and a notable water flux of up to 1309 Lm<sup>-2</sup> h<sup>-1</sup>. The integration of ZIF-8 microcrystals improved the membrane’s mechanical durability, making it more resistant to fracture while ensuring stability in highly acidic, basic, hot, and cold conditions. The presence of numerous micro-structures on the membrane’s surface endowed it with commendable photocatalytic properties and antibacterial activity. Hence, the high-performance and multifunctional nature of PVDF/ZIF-8 membrane make it a promising candidate for efficient separation of oily wastewater treatment.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"74 ","pages":"Article 107822"},"PeriodicalIF":6.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143898371","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}

引用次数: 0

Environmental fate and ecotoxicological behaviors of antiviral drugs associated with COVID-19 in environmental water 环境水体中与COVID-19相关抗病毒药物的环境命运及生态毒理学行为

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-05-01 DOI: 10.1016/j.jwpe.2025.107828

Guilin He , Wenxuan Ji , Zeting Chen , Tuqiao Zhang , Zhenqi Du , Baozhen Liu , Yonglei Wang

{"title":"Environmental fate and ecotoxicological behaviors of antiviral drugs associated with COVID-19 in environmental water","authors":"Guilin He , Wenxuan Ji , Zeting Chen , Tuqiao Zhang , Zhenqi Du , Baozhen Liu , Yonglei Wang","doi":"10.1016/j.jwpe.2025.107828","DOIUrl":"10.1016/j.jwpe.2025.107828","url":null,"abstract":"<div><div>In late 2020, the COVID-19 pandemic led to widespread use of antiviral drugs, causing their concentrations in aquatic environments to increase due to incomplete patient metabolism and improper waste disposal. This has raised concerns about potential harm to aquatic ecosystems and human health. This paper summarizes the classification and occurrence of COVID-19-related antiviral drugs in wastewater treatment plants (WWTPs), surface water, groundwater and drinking water. The effects of biological treatment, advanced oxidation technologies, and adsorption on the removal of COVID-19-related antiviral drugs from water, as well as the advantages, disadvantages, applicability and research progress of these technologies, are discussed. In addition, the transformation of COVID-19-related antiviral drugs is reviewed, and the toxicity risk of these drugs is evaluated. The results show that existing removal methods are mostly focused on the removal of single antiviral drug species, and each method has its limitations. Furthermore, few of these methods have been applied in practical engineering applications. Research on the transformation and toxicity evaluation of COVID-19-related antiviral drugs has mainly focused on several commonly used drugs, lacking systematic investigation. Therefore, it is imperative to develop effective strategies for removing COVID-19-related antiviral drugs from aquatic environment and to comprehensively evaluate water toxicity risks. Finally, the research on the removal of COVID-19-related antiviral drugs in water was prospected to provide reference for subsequent research.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"74 ","pages":"Article 107828"},"PeriodicalIF":6.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886307","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}

引用次数: 0

A green facile fluorescent sensor based on APTES-modified carbon quantum dots coupled with molecular imprinting for efficient detection of metronidazole in aqueous environment 基于aptes修饰的碳量子点与分子印迹耦合的绿色荧光传感器用于水环境中甲硝唑的高效检测

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2025-05-01 DOI: 10.1016/j.jwpe.2025.107816

Abdul Majid , Yanbo Tian , Huiru Li , Liju Tan , Rizwan Haider , JiangTao Wang

{"title":"A green facile fluorescent sensor based on APTES-modified carbon quantum dots coupled with molecular imprinting for efficient detection of metronidazole in aqueous environment","authors":"Abdul Majid , Yanbo Tian , Huiru Li , Liju Tan , Rizwan Haider , JiangTao Wang","doi":"10.1016/j.jwpe.2025.107816","DOIUrl":"10.1016/j.jwpe.2025.107816","url":null,"abstract":"<div><div>Metronidazole (MTZ) as a widely used antibiotic of the nitro-imidazole class to treat infections in both humans and animals, is found to be toxic, mutagenic, carcinogenic and poses a risk to aquatic life and human health via the food chain. An eco-green sustainable and novel APTES-CQDs@MIPs fluorescent sensor was developed with a cost-effective hydrothermal method from APTES and waste orange peels, coupled with molecular imprinting using reverse micro-emulsion for rapid and accurate detection of MTZ in water samples. APTES-CQDs achieved simultaneous carbonization, nitrogen doping, and silica-based passivation, eliminated toxic chemicals, and demonstrated zero waste. The sensor response time was 1 min upon rebinding with MTZ and the fluorescence quenching mechanism was proposed to be charge transfer and static quenching. The APTES-CQDs@MIPs sensor had exceptional reproducibility (RSD 3.45 %) and showed excellent sensitivity and selectivity towards MTZ with a linear concentration range of 0.17–40.00 μM (R<sup>2</sup> = 0.997), and the detection limit of 0.05 μM. The imprinting factor (IF) reached 4.67 and recycle efficiency achieved over 88 % up to five cycles. The constructed fluorescent probe demonstrated comparable results to other reported methods, with recoveries of 95.1–108.2 %. The sensor has the advantages of simplicity, excellent selectivity, superior sensitivity, good reproducibility, stability, and recyclability.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"74 ","pages":"Article 107816"},"PeriodicalIF":6.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894672","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}

引用次数: 0