Journal of water process engineering最新文献_第8页

Soft sensing of biological oxygen demand in industrial wastewater using machine learning models 利用机器学习模型对工业废水中生物需氧量进行软测量

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-09-13 DOI: 10.1016/j.jwpe.2025.108699

Muhammad Hassnain , Sarada M.W. Lee , Muhammad Rizwan Azhar

{"title":"Soft sensing of biological oxygen demand in industrial wastewater using machine learning models","authors":"Muhammad Hassnain , Sarada M.W. Lee , Muhammad Rizwan Azhar","doi":"10.1016/j.jwpe.2025.108699","DOIUrl":"10.1016/j.jwpe.2025.108699","url":null,"abstract":"<div><div>Traditional methods for determining biological oxygen demand (BOD) from industrial water resource recovery facilities (WRRFs) are time-consuming and often impractical for real-time process control. This study explores the application of machine learning (ML) and artificial intelligence (AI) models for the prediction of final effluent BOD (F-BOD) based on physicochemical and operational parameters by leveraging nineteen years of historical laboratory and instrumentation data from the WRRF of an essential oil manufacturing plant. The predictions from these models are then used to simulate the process dynamics, assessing the optimal operational boundary conditions for all input parameters at which the target (F-BOD) falls within the bounds of the best operating point, with minimal process implications and environmental impact. A simple graphical user interface (GUI) was developed to visualise and automate model training, predictions, and simulation processes. The models' performance evaluation indicated that Extra Trees (ExT) is the best-performing model for prediction, with a coefficient of determination (R<sup>2</sup>) of ~0.98 on test data and ~0.96 on unseen validation data, while the Neural Networks (NN) model is identified as the best-performing model for simulation purposes. Feature importance, ablation study and Shapley Additive explanations (SHAP) analyses identified final effluent chemical oxygen demand, influent wastewater flow rate, and recycle sludge flow as the most influential predictors of F-BOD. The study highlights that AI can not only reduce costs by substituting five-day BOD tests with soft sensor predictions but also has the potential to enhance process efficiency, control, and safety in WRRFs.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108699"},"PeriodicalIF":6.7,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046980","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

Refractory organic pollutants removal in industrial wastewater by a pilot-scale tubular mixed reactor at short hydraulic retention time: Effect and mechanism 中试管式混合反应器在短水力停留时间下去除工业废水中的难降解有机污染物：效果与机理

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-09-13 DOI: 10.1016/j.jwpe.2025.108683

Jiaqi Wang, Zilin Wang, Yasong Chen, Wan Sun, Mengmeng Liu, Zhiyong Wang, Lei Wu

{"title":"Refractory organic pollutants removal in industrial wastewater by a pilot-scale tubular mixed reactor at short hydraulic retention time: Effect and mechanism","authors":"Jiaqi Wang, Zilin Wang, Yasong Chen, Wan Sun, Mengmeng Liu, Zhiyong Wang, Lei Wu","doi":"10.1016/j.jwpe.2025.108683","DOIUrl":"10.1016/j.jwpe.2025.108683","url":null,"abstract":"<div><div>This study investigates the efficiency of incomplete oxidation-coagulation/flocculation-separation (IOCS) process for industrial wastewater advanced treatment using pilot-scale tubular mixed reactor and micro/nano air flotation equipment. The underlying mechanism was explored through variations in chemical oxygen demand (COD), pH and H<sub>2</sub>O<sub>2</sub> concentration, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV–Vis), gel permeation chromatography (GPC), and gas chromatography/tandem quadrupole time-of-flight mass spectrometry (GC/QTOF-MS) analyses. The IOCS process achieved an average COD removal rate exceeding 50 % and reduced total phosphorus to extremely low levels (< 0.1 mg/L), when the initial pH was elevated to 5.0 and the oxidation hydraulic retention time (HRT) was shortened to 5–10 min without the introduction of pre-prepared catalysts. Mineralization removal only contributed at most 26.3 %–34.4 % of total COD, whereas IOCS removal accounted for at most 73.1 %–86.7 %. A sharp pH drop from 5.0 to approximately 3.5 and rapid H<sub>2</sub>O<sub>2</sub> consumption by >95 % were observed within the first 2–5 min, associated with iron hydrolysis and subsequently enhanced oxidation and adsorption. Furthermore, FTIR and GC/QTOF-MS analyses confirmed the incomplete mineralization of refractory organic pollutants, with their intermediates accumulating in the IOCS sludge. <em>In-situ</em> generated Fe(III) likely played an indispensable role in phosphorus and organic pollutants removal. This study proposes a novel approach to wastewater advanced treatment, emphasizing rapid processing, functional integration, and minimal chemical input.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108683"},"PeriodicalIF":6.7,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145047077","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

Eco-conscious synthesis of chitosan-reduced magnetic Iron oxide nanocomposite from crab Shell waste for photocatalytic degradation of textile dyes: Ecotoxicity insights 利用蟹壳废物合成壳聚糖还原磁性氧化铁纳米复合材料光催化降解纺织染料的生态毒性研究

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-09-13 DOI: 10.1016/j.jwpe.2025.108651

Santhosh Abhirami , Govindhan Thiruppathi , Mohammad Shamsul Ola , M. Arunkumar , Palanisamy Sundararaj , Pawlin Vasanthi Joseph

{"title":"Eco-conscious synthesis of chitosan-reduced magnetic Iron oxide nanocomposite from crab Shell waste for photocatalytic degradation of textile dyes: Ecotoxicity insights","authors":"Santhosh Abhirami , Govindhan Thiruppathi , Mohammad Shamsul Ola , M. Arunkumar , Palanisamy Sundararaj , Pawlin Vasanthi Joseph","doi":"10.1016/j.jwpe.2025.108651","DOIUrl":"10.1016/j.jwpe.2025.108651","url":null,"abstract":"<div><div>The advancement of nanocomposites has progressed rapidly in recent years, enabling the efficient removal of anionic textile dyes that pose a detrimental toxicity and a serious threat to the ecosystem. In response to environmental concerns, green synthesis is recognized as a viable and ecologically responsible alternative to synthetic routes. In this study, biopolymers such as crab chitosan, utilized via NADES, have been innovatively employed as a reducing agent. As a result, chitosan-reduced magnetic iron oxide (Cs-RMIO), was systematically synthesized and characterized. This versatile Cs-RMIO nanoplatform could be used as a potential photocatalytic degrading material of textile dyes. The Cs-RMIO also exhibited an exceptional DDE of 96.1 %, 98.9 % and 88.9 % respectively, for the dyes, and showed higher antibacterial and antioxidant activity. The degraded products were also analysed for ecotoxicity in the model organism, <em>C. elegans</em>, for the assessment of neuronal and physiological parameters. The potential harm of degraded products to plant development was assessed by measuring the germination rate and other physical characteristics of <em>V. radiata</em>. Both toxicity models showed no potential effect from Cs-RMIO degraded products, emphasizing the degradation potential of Cs-RMIO NC as a sustainable remediation strategy for textile dye pollution.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108651"},"PeriodicalIF":6.7,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046840","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

Biofloc technology for sustainable aquaculture: Microbial regulation, nutrient dynamics, and integrated system approaches 可持续水产养殖的生物絮团技术：微生物调控、营养动态和综合系统方法

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-09-13 DOI: 10.1016/j.jwpe.2025.108730

Nandini Rai , Akshaya Panigrahi , J.M. Julka , Fan-Hua Nan , Sofia Priyadarsani Das

{"title":"Biofloc technology for sustainable aquaculture: Microbial regulation, nutrient dynamics, and integrated system approaches","authors":"Nandini Rai , Akshaya Panigrahi , J.M. Julka , Fan-Hua Nan , Sofia Priyadarsani Das","doi":"10.1016/j.jwpe.2025.108730","DOIUrl":"10.1016/j.jwpe.2025.108730","url":null,"abstract":"<div><div>Biofloc Technology (BFT) stands out as a groundbreaking and sustainable method in aquaculture, adept at improving water quality, drastically reducing environmental discharge, and boosting the yield of fish and shellfish. This review offers an extensive look at BFT, dissecting its core principles and spotlighting key design considerations: constant aeration, strategic water retention, tank design, and systems that require little to no water exchange. It also delves into the critical operational factors that drive microbial floc formation and nutrient assimilation, such as the ideal carbon-to‑nitrogen ratio (typically between 10:1 and 20:1), optimal stocking densities, dissolved oxygen levels, pH control (6.5–8.5), and alkalinity maintenance (above 100 mg/L). The discussion extends to the varied organic carbon sources utilized (like jaggery, molasses, and rice bran) and the vital role probiotics play in nurturing beneficial microbial communities for healthier, faster-growing aquatic species. The document meticulously examines how the system's setup (indoor or outdoor), the chosen species, growth outcomes, and health indicators (including body composition and tissue analysis) are influenced. Furthermore, it underscores BFT's capacity for circular and resilient aquaculture, showcasing its integration with efficient systems like aquaponics, hydroponics, periphyton substrates, and biochar. Current hurdles, such as system instability, foaming, and intricate operations, are acknowledged, alongside a forward-looking perspective on scaling and optimizing the technology.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108730"},"PeriodicalIF":6.7,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046982","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

Deep treatment of secondary wastewater from electroless nickel plating ponds with two new chelating resins: Enhancement of complexed Ni(II) removal efficiency and mechanism study 两种新型螯合树脂深度处理化学镀镍池二次废水：提高络合Ni（II）去除效率及机理研究

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-09-13 DOI: 10.1016/j.jwpe.2025.108694

Mengjie Zhao , Kangping Cui , Xing Chen , Haiyang Li , Wenming Wu

{"title":"Deep treatment of secondary wastewater from electroless nickel plating ponds with two new chelating resins: Enhancement of complexed Ni(II) removal efficiency and mechanism study","authors":"Mengjie Zhao , Kangping Cui , Xing Chen , Haiyang Li , Wenming Wu","doi":"10.1016/j.jwpe.2025.108694","DOIUrl":"10.1016/j.jwpe.2025.108694","url":null,"abstract":"<div><div>This study presents two novel chelating resins for achieving ultra-low discharge standards in electroplating wastewater treatment, addressing the critical challenge of reducing Ni concentration from about 1 mg/L to <0.1 mg/L in secondary effluent. SDC-1 and SDC-2 were innovatively synthesized by functionalizing styrene-divinylbenzene (SDC) white spheres with hydroxamic acid and sodium dithiocarbamate groups, respectively. Both resins demonstrated exceptional performance in removing complexed Ni(II) from secondary effluent to below 0.1 mg/L, with SDC-2 achieving remarkably low concentrations of 0.03 mg/L, meeting national ultra-low emission standards. Comprehensive characterization using FTIR, FESEM, BET, and XPS, combined with thermodynamic and kinetic modeling and DFT calculations, revealed the superior adsorption mechanisms. The adsorption behaviors of both resins fitted well with the Freundlich isotherm model and the pseudo-second-order kinetic model. DFT calculations unveiled that both resins possess abundant active sites capable of decomposing Ni(II) complexes for deep wastewater treatment. Mechanistic insights showed that SDC-1 forms stable five-membered cyclic coordination complexes through O and N atoms of -CONHOH groups, while SDC-2 creates more structurally stable polydentate complexes via simultaneous coordination of N and S atoms in -HN-C(=S)-S-Na<sup>+</sup> groups with Ni(II). This work establishes a promising new strategy for deep removal of complexed heavy metal ions to achieve ultra-low discharge standards in industrial wastewater treatment.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108694"},"PeriodicalIF":6.7,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046841","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

Application of piezoelectric modified membranes (PMMs) for water and wastewater treatment: Contemporary status and future prospects 压电改性膜在水与废水处理中的应用：现状与展望

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-09-13 DOI: 10.1016/j.jwpe.2025.108688

Wanying Xie , Fangsheng Gong , Yutao Fang , Lijie Song , Huijuan Wang , Shangye Yang

{"title":"Application of piezoelectric modified membranes (PMMs) for water and wastewater treatment: Contemporary status and future prospects","authors":"Wanying Xie , Fangsheng Gong , Yutao Fang , Lijie Song , Huijuan Wang , Shangye Yang","doi":"10.1016/j.jwpe.2025.108688","DOIUrl":"10.1016/j.jwpe.2025.108688","url":null,"abstract":"<div><div>Piezoelectric modified membranes (PMMs) synergizing piezoelectric energy conversion with membrane separation, have emerged as a groundbreaking innovation in water treatment. This review traces historical evolution of piezoelectric materials from their discovery (1880s) to modern integration into membrane systems (2000s-2024), identifying key developmental phases. Critical performance parameters like piezoelectric coefficients (<em>d</em>₃₃), electromechanical coupling factors (<em>k</em>), and other dielectric properties (<em>ε</em>, tan<em>δ</em>, <em>Q</em><sub>m</sub>, <em>N</em>) are rigorously analyzed to establish PMMs selection criteria in water treatment. Piezoelectric materials and mechanistic insights into piezoelectricity generation are elucidated, emphasizing how lattice distortion-induced charge redistribution enables mechanical-to-electrical energy transduction. Common fabrication processes are evaluated to provide guide on pore structure, piezoelectric dispersion, and poling stability. Poling challenges in fabrication are recapitulated, that electrical breakdown possibly mitigated via parameter/material optimization, enhancing performance for water treatment. PMMs demonstrate superior antifouling performance and pollutant rejection across diverse scenarios, involving of drinking water purification, hypersaline effluent treatment, and industrial wastewater remediation. Integration of PMMs with physico-chemistry methods (photo-catalysis, advanced oxidation, adsorption, and electrochemical processes), further enabled synergistic removal of persistent pollutants meanwhile showed energy-saving. Challenges in PMMs integration systems are discussed, future directions prioritize to study multifunctional PMMs combining other technologies, to offer transformative potential for next-generation water treatment.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108688"},"PeriodicalIF":6.7,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046984","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

Eco-friendly synthesis of N-doped carbon quantum dots from Bombax ceiba stem: A photophysical study with exploratory sensing of Fe3+/Cd2+ and dye degradation 木棉茎中n掺杂碳量子点的生态合成：Fe3+/Cd2+和染料降解的探索性光物理研究

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-09-13 DOI: 10.1016/j.jwpe.2025.108704

Muhammad Arslan Akhtar , Jalwa Anum , Sameh S. Ahmed , Muhammad Ashfaq Ahmed , Asad Muhammad Khan , Christie M. Sayes , Abdur Rahim

{"title":"Eco-friendly synthesis of N-doped carbon quantum dots from Bombax ceiba stem: A photophysical study with exploratory sensing of Fe3+/Cd2+ and dye degradation","authors":"Muhammad Arslan Akhtar , Jalwa Anum , Sameh S. Ahmed , Muhammad Ashfaq Ahmed , Asad Muhammad Khan , Christie M. Sayes , Abdur Rahim","doi":"10.1016/j.jwpe.2025.108704","DOIUrl":"10.1016/j.jwpe.2025.108704","url":null,"abstract":"<div><div>This study reports a green, rapid, and sustainable continuous hydrothermal synthesis of nitrogen-doped carbon quantum dots (N-CQDs) derived using the tropical biomass <em>Bombax ceiba</em> as a new carbon precursor along with urea as a nitrogen source. The N-CQDs showed high blue fluorescence emissions when excited with 365 nm UV light and can be used in fluorescence sensing and photocatalysis. High-resolution spectroscopy, microscopy, and surface analysis were adequate to characterize N-CQDs and N-CQDs/TiO<sub>2</sub> comprehensively to confirm their optical characteristics, morphology, elemental composition, and surface polarity. N-CQDs were mixed with TiO<sub>2</sub> to attain N-CQDs/TiO<sub>2</sub> composites at ambient conditions under visible light to achieve photocatalytic responses. These N-CQDs achieved specific targeting of the Fe<sup>3+</sup> and Cd<sup>2+</sup> ions by fluorescence quenching, whose sensitivity had the strongest response to the tested Fe<sup>3+</sup> and lowest limit of detection (LOD) of 1.9 μM, which is far below the guideline threshold set out by WHO, indicating their possible applicability in environmental monitoring. Methylene Blue (MB) was used as a common organic dye as a model pollutant to measure photocatalytic activity, with degradation being 88 % under visibly illuminated N-CQDs/TiO<sub>2</sub> composite, degraded better than both pure TiO<sub>2</sub> (44 %) and pure N-CQDs (75 %) under visible light. This research highlights the dual functionality of N-CQDs; firstly, as sensors to sense heavy metal ions and secondly as photocatalysts in decomposing dyes, offering a prospective application to environmental remediation.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108704"},"PeriodicalIF":6.7,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145047078","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 pilot-scale study of improving water quality and the aquatic ecosystem of a reclaimed water-recharged reservoir by an integrated constructed wetland-submerged macrophyte forest ecosystem 人工湿地-淹没植被复合生态系统改善中试水库水质及水生生态系统研究

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-09-13 DOI: 10.1016/j.jwpe.2025.108715

Ai Chen , Dan Qu , Yongze Liu , Wenhui Li

{"title":"A pilot-scale study of improving water quality and the aquatic ecosystem of a reclaimed water-recharged reservoir by an integrated constructed wetland-submerged macrophyte forest ecosystem","authors":"Ai Chen , Dan Qu , Yongze Liu , Wenhui Li","doi":"10.1016/j.jwpe.2025.108715","DOIUrl":"10.1016/j.jwpe.2025.108715","url":null,"abstract":"<div><div>A pilot-scale carbon release pond-constructed wetland-oxidation pond (PWP) coupled with a submerged macrophyte forest was constructed to improve the water quality of reclaimed water and to restore the aquatic ecosystem of Shahe reservoir recharged with the treated reclaimed water. With combined effects of physical, chemical, and microbial processes like interception, precipitation, nitrification and denitrification, PWP-macrophyte system achieved 61.79 ± 15.54 %, 72.11 ± 8.26 %, 54.57 ± 7.65 %, 68.79 ± 11.89 %, 73.54 ± 8.16 %, 38.97 ± 10.98 %, 85.13 ± 3.96 %, and 88.54 ± 2.55 % of total nitrogen (TN), NH<sub>4</sub><sup>+</sup>-N, NO<sub>3</sub><sup>−</sup>-N, total phosphorus (TP), phosphate, chemical oxygen demand (COD<sub>Cr</sub>), chlorophyll <em>a</em>, and turbidity removal, significantly improving water quality of the reclaimed water. Furthermore, the plankton and sedimentary microbial diversity and evenness were notably increased by the macrophyte forest, indicating its ability to restore the aquatic ecosystem disturbed by reclaimed water replenishment. The enhanced biodiversity was likely driven by improved habitat heterogeneity and stabilized physicochemical conditions, which favored the reestablishment of sensitive taxa. In addition, after being treated with the PWP-macrophyte forest, the eutrophic and saprobic indicators decreased while the oligotrophic and oligosaprobic indicators appeared. These changes indicate a functional shift from a nutrient-rich, pollution-tolerant community towards a cleaner, self-sustaining aquatic system, demonstrating both water quality improvement and ecological recovery potential. The proposed system is therefore promising for treating reclaimed water-recharged waters and for aquatic ecology restoration.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108715"},"PeriodicalIF":6.7,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046981","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

Molecular-level analysis of coagulation mechanism in polyamide and norfloxacin composite system 聚酰胺-诺氟沙星复合体系凝血机理的分子水平分析

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-09-12 DOI: 10.1016/j.jwpe.2025.108709

Jing He , Kening Tian , Jing Yang , Liangyan He

{"title":"Molecular-level analysis of coagulation mechanism in polyamide and norfloxacin composite system","authors":"Jing He , Kening Tian , Jing Yang , Liangyan He","doi":"10.1016/j.jwpe.2025.108709","DOIUrl":"10.1016/j.jwpe.2025.108709","url":null,"abstract":"<div><div>Microplastics (MPs) and antibiotics will influence each other's removal efficiency during coagulation process. This study investigated the coagulation performance and mechanism of polyamide (PA) (pristine PA (PA-O) and aged PA (PA-A)) and norfloxacin (NOR) in single and composite system. The optimal removal efficiency was achieved 73–90 % for PA-O, 80–92 % for PA-A, 30–41 % (PA-O@NOR) and 23–41 % (PA-A@NOR) for NOR in composite system. Mechanism study found the reaction between oxygen-containing groups and aluminum species was crucial during coagulation process. PA-O could be complexed with Al<sup>3+</sup> through amide group, while PA-A could react with the active groups (η-H<sub>2</sub>O and η-OH) on aluminum hydrolysate species through -OH. As more oxygen-containing groups participated in the reaction, PA-A exhibited advantage of coagulation compared to PA-O. And NOR could either be complexed with Al<sup>3+</sup> or react with the active groups by the oxygen of -C=O and -COOH. Thus, there was a competition between NOR and PA in composite system. Moreover, humic acid (HA) competed with PA and NOR for aluminum hydrolysis products, inhibiting the removal of PA and NOR. This inhibition was more pronounced for PA than for NOR, as HA enhanced the phase transfer of NOR.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108709"},"PeriodicalIF":6.7,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046832","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

Advanced LDH-derived Ag@NiO/Ag2CrO4 heterojunction photocatalyst for rapid dye degradation 先进的ldh衍生Ag@NiO/Ag2CrO4异质结光催化剂用于染料的快速降解

IF 6.7 2区工程技术

Journal of water process engineering Pub Date : 2025-09-12 DOI: 10.1016/j.jwpe.2025.108727

Rajmoni Basumatary , Phulmani Basumatary , Saurabh J. Hazarika , Dimpul Konwar , Anjalu Ramchiary

{"title":"Advanced LDH-derived Ag@NiO/Ag2CrO4 heterojunction photocatalyst for rapid dye degradation","authors":"Rajmoni Basumatary , Phulmani Basumatary , Saurabh J. Hazarika , Dimpul Konwar , Anjalu Ramchiary","doi":"10.1016/j.jwpe.2025.108727","DOIUrl":"10.1016/j.jwpe.2025.108727","url":null,"abstract":"<div><div>This work unveils a superior plasmonic photocatalyst synthesized through the strategic integration of metallic Ag during Ni<img>Cr LDH synthesis. The catalyst synthesis involved the formation of modified Ni<img>Cr LDH, by the incorporation of a metallic Ag solution and subsequent air heat treatment, leading to the in-situ development of the mixed metal oxide Ag@NiO/Ag<sub>2</sub>CrO<sub>4</sub> (ANC). The ANC photocatalyst exhibits strong visible-light absorption and suitably positioned band edges, forming a <em>Z</em>-scheme heterojunction that facilitates efficient charge transfer and enhances redox reactivity. The efficacy of the photocatalyst was evaluated by the degradation of MB and RhB dye, revealing that the heterojunction photocatalyst outperformed the LDH derived NiO (NC) counterpart by 34 fold and 1.4 fold in MB and RhB degradation, respectively. The improved catalytic performance mainly stems from its efficient harvesting of visible light, and the plasmonic effects, including local surface plasmon resonance (LSPR) and plasmon induced resonant energy transfer (PIRET). The PIRET phenomena enabled by Ag nanoparticles plays a crucial intermediary role in sustaining an efficient <em>Z</em>-scheme charge transfer between Ag<sub>2</sub>CrO<sub>4</sub> and NiO. The key significance of this study lies in its innovative synthesis strategy, wherein Ni<img>Cr LDH serves as a transformative precursor, strategically engineered to develop highly active photocatalysts through the incorporation of plasmonic Ag.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"78 ","pages":"Article 108727"},"PeriodicalIF":6.7,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046835","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