Journal of water process engineering最新文献

{"title":"Developing a sustainable hybrid adsorbent: Utilizing waste tissue paper with a poly[DMAEMA-c-DVB] copolymer network for effective cationic and anionic dye removal","authors":"Pramod V. Rathod,&nbsp;Pooja V. Chavan,&nbsp;Hern Kim","doi":"10.1016/j.jwpe.2024.106660","DOIUrl":"10.1016/j.jwpe.2024.106660","url":null,"abstract":"<div><div>Water contamination presents serious environmental challenges, demanding sustainable remediation solutions. Developing eco-friendly adsorbents from waste tissue paper (WT) offers a promising approach. However, traditional waste-based adsorbents often rely on metals, metal oxides, graphene, and metal-derived carbon, which can cause secondary pollution through leaching. Herein, we synthesized a flexible and durable WT/poly[DMAEMA-c-DVB] hybrid adsorbent [WT-g-P(DD)] through solvothermal copolymerization of <em>N</em>,<em>N</em>-dimethylaminomethyl methacrylate (DMAEMA) and divinylbenzene (DVB) in the presence of WT in an autoclave, offering a sustainable solution to environmental challenges. The WT-g-P(DD) achieved maximum removal efficiencies for MeB and MB dyes, reaching 96.6 % and 94.6 %, respectively, under optimal conditions (initial dye concentration: 10 mg/L, contact time: 120/180 min, adsorbent dosage: 15 mg/L, pH 10/6 for MeB and MB at 25 °C, respectively). Kinetic studies showed that adsorption follows pseudo-second-order kinetics and fits well with the Langmuir isotherm model for both MeB and MB. WT-g-P(DD) exhibited an outstanding adsorption capability of 395.7 mg/g for MeB and 182.6 mg/g for MB. Fourier-transform infrared spectroscopy (FT-IR) analysis indicated that the presence of –OH, and –P(DD) segments within the WT-g-P(DD) hybrid plays a crucial role in facilitating dye adsorption. This is achieved through mechanisms such as hydrogen bonding, π-π stacking interactions, electrostatic interactions, and acid-base interactions. Notably, WT-g-P(DD) maintained its effectiveness over three reuse cycles, highlighting its potential as a sustainable, cost-effective water treatment solution. This makes WT-g-P(DD) a strong candidate for use in continuous flow systems, contributing to environmental protection and resource sustainability.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106660"},"PeriodicalIF":6.3,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745573","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":"Pre-pilot forward osmosis – Membrane distillation hybrid system for sustainable produced water treatment and reducing volume of hazardous waste in oil and gas industry","authors":"Hyuk Soo Son ,&nbsp;Alla Alpatova ,&nbsp;Muhammad Saqib Nawaz ,&nbsp;Sofiane Soukane ,&nbsp;Sandra C. Medina ,&nbsp;Veerabhadraiah Gudideni ,&nbsp;Ali Al-Qahtani ,&nbsp;Dalaver H. Anjum ,&nbsp;Noreddine Ghaffour","doi":"10.1016/j.jwpe.2024.106628","DOIUrl":"10.1016/j.jwpe.2024.106628","url":null,"abstract":"<div><div>This study introduces pre-pilot scale hybrid forward osmosis - membrane distillation (FO-MD) module, designed for the simultaneous treatment of different challenging produced water (PW) streams from Oil &amp;Gas Industry. In this module, hot draw solution simultaneously serves as MD feed solution. The performance of this module was assessed with synthetic and real PW streams for extended operating times. The MD permeate production was doubled and comprised 0.4 L/h for 7:1 MD/FO area ratio (0.105 m² and 0.015 m², respectively) compared to permeate production that was observed with equal MD and FO membrane area (0.015 m² each). The conductivity of the final product water was 364.9 ± 2.7 μS/cm, comparable to the typical potable water conductivity, implying its potential for reuse applications and minimizing volume of hazardous waste. Analysis of MD permeate quality showed that concentration of major ions was reduced by &gt;99 % and chemical oxygen demand was removed by 90.1 %. Continuous operation with real produced streams led to partial pore wetting on the MD active layer. The microscopy showed organic fouling caused by oil and grease deposition and NaCl/CaSO₄ scaling was found on both sides of FO membrane. These results suggest that PW pretreatment should be implemented to alleviate membrane fouling and pore wetting. We also observed reverse solute flux of 7.07 g/m² h in experiments utilizing real DE and WO streams. The results of this study helped to identify challenges arising from the system scale-up and provide grounds for integrating hybrid FO-MD technology to recover water from oil and gas facilities.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106628"},"PeriodicalIF":6.3,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719913","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":"Novel cobalt-doped CuFe2O4 spinel catalyst for enhanced peroxymonosulfate activation to achieve rapid degradation of tetracycline hydrochloride: Dominant roles of O2- and 1O2 in the oxidation process","authors":"Xinyu Xia ,&nbsp;Qiying Gao ,&nbsp;Xingxiang Ji ,&nbsp;Jinquan Wan ,&nbsp;Yan Wang ,&nbsp;Yongwen Ma","doi":"10.1016/j.jwpe.2024.106638","DOIUrl":"10.1016/j.jwpe.2024.106638","url":null,"abstract":"<div><div>Heterogeneous peroxymonosulfate (PMS) catalysis is a promising method for water pollution treatment. CuFe₂O₄ spinel can activate PMS, but its application is limited by its tendency to agglomerate and its low-mass transfer efficiency. In this study, a cobalt-doped CuFe₂O₄ (CuFeCoO₄, CFCo-1) was successfully synthesized, achieving a degradation efficiency of 98.36 % for tetracycline hydrochloride (TCH) within 21 min, with a high degradation rate corresponding to a kinetic constant of 0.2041 min⁻¹. CFCo-1 demonstrated strong resistance to interference from inorganic ions and organic compounds. It maintained over 90 % TCH removal efficiency with negligible leaching of metal ions after five cycles, indicating that the catalyst had strong cyclic stability. Mechanistic analysis revealed that cobalt doping improved the electron transfer efficiency of the catalyst, enabling CFCo-1 to activate PMS and degrade the pollutant through both radical (<img>OH, SO₄<img>^- and O₂<img>^-) and non-radical (¹O₂) pathways, with O₂<img>^- and ¹O₂ being the dominant species. The potential degradation pathways of TCH were proposed based on theoretical calculation and the identification of degradation products. In conclusion, cobalt doping is an effective strategy for enhancing the catalytic performance of spinel for efficient degradation of pollutants in water.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106638"},"PeriodicalIF":6.3,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719904","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 ranitidine removal using Si3N4-ZVI/PAA system: Mechanistic insights and environmental implications","authors":"Yun-fei Zhang ,&nbsp;Xin Quan ,&nbsp;Sheng-gui Chen ,&nbsp;Jian-hui Xu ,&nbsp;Dan Li ,&nbsp;Lei Li ,&nbsp;Si-hao Lv ,&nbsp;Jin-ze Li ,&nbsp;Yi-hang Zhang ,&nbsp;Zhuo-wei Zhong","doi":"10.1016/j.jwpe.2024.106641","DOIUrl":"10.1016/j.jwpe.2024.106641","url":null,"abstract":"<div><div>In this study, silicon nitride-zero-valent iron (Si₃N₄-ZVI) powders were obtained through post-milling and employed as a catalyst to activate peracetic acid (PAA) for the removal of Ranitidine (RAN). The system achieved an impressive 90.4 % of degradation efficiency, with a pseudo-first-order kinetic reaction constant 11.3 times higher than that of the ZVI/PAA system. Quenching experiments and Electron Paramagnetic Resonance (EPR) analysis confirmed that both radical and non-radical processes are involved in RAN degradation within the Si₃N₄-ZVI/PAA system. Moreover, the identified ten degradation products are less toxic compared to the byproducts from alternative oxidation methods reported by prior literature. The proposed degradation pathway of RAN includes C<img>S cleavage, oxygenation/hydroxylation demethylation, and denitrification. Furthermore, the Si₃N₄-ZVI/PAA system showed effectively in treating RAN-contaminated surface water, artificial wastewater, and dissolved organic matter, demonstrating its great ability in treating diverse organic-contaminated water sources. In conclusion, results of this study suggest that the Si₃N₄-ZVI/PAA system possess high pollutant removal efficiency, broad applicability, and less environmental and health risks.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106641"},"PeriodicalIF":6.3,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719909","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":"Green synthesis of TiO₂ phases for efficient photocatalytic degradation of oxytetracycline in real aquaculture wastewater","authors":"Jing Yi Chin,&nbsp;Abdul Latif Ahmad,&nbsp;Siew Chun Low","doi":"10.1016/j.jwpe.2024.106644","DOIUrl":"10.1016/j.jwpe.2024.106644","url":null,"abstract":"<div><div>The increasing use of antibiotics, particularly oxytetracycline (OTC), in aquaculture has raised concerns about environmental pollution and the spread of antibiotic-resistant bacteria. This study investigates the photocatalytic removal of OTC in real aquaculture wastewater using green-synthesized titanium dioxide (TiO₂) derived from Neem leaves. Three phases of TiO₂ were successfully synthesized, namely anatase, rutile, and brookite, with their properties evaluated using XRD, FESEM, photocurrent response, EIS, and photoluminescence. Among the phases studied, Neem-Anatase TiO₂ demonstrated superior performance, achieving 86.63 % ± 2.7 % antibiotic degradation in pure OTC aqueous solution. With a band gap of 3.15 eV, Neem-Anatase TiO₂ exhibited light absorption capability 1.5 and 6 times greater than Neem-rutile (3.4 eV) and Neem-brookite (3.71 eV), respectively. Neem-Anatase TiO₂ maintained a 69.3 % ± 1.2 % degradation efficiency over four recycling cycles, and hole radicals was determined as the primary radical species involved in the photocatalytic process. In real aquaculture water, the Neem-Anatase TiO₂ OTC degradation performance could achieve 69.63 % ± 3.4 % after optimizing experimental parameters including the initial Neem-Anatase TiO₂ dosage (0.6 mg/mL), initial OTC concentration (10 ppm), pH (pH 6) and hydrogen peroxide concentration (5 mM) using the Design Expert software. Factors contributing to the reduction of OTC removal efficiency in aquaculture water include the screening and scavenging effect by the dissolved solids, organic and inorganic components in the water. This work demonstrates the potential of green-synthesized TiO₂, particularly the anatase phase, as a sustainable solution for antibiotic pollution in aquaculture wastewater thereby mitigating environmental impacts and limiting antibiotic resistance in aquatic ecosystems.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106644"},"PeriodicalIF":6.3,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702128","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 ecofriendly pectin-co-montmorillonite composite hydrogel for the separation of contaminant metal ions from water","authors":"João Gabriel Ribeiro ,&nbsp;Rizia Maria Raimondi ,&nbsp;Alana Gabrieli de Souza ,&nbsp;Derval dos Santos Rosa ,&nbsp;Alexandre Tadeu Paulino","doi":"10.1016/j.jwpe.2024.106629","DOIUrl":"10.1016/j.jwpe.2024.106629","url":null,"abstract":"<div><div>The aim of this study was to investigate the synthesis, characterization, and sorption performance of ecofriendly pectin-co-montmorillonite composite hydrogels for the separation of potentially toxic elements (PTEs) from water. Hydrogels were synthesized using an environmentally friendly method, incorporating montmorillonite (MMT) at proportions ranging from 0 to 10 % in the tridimensional pectin (PC) network. The composite hydrogels were characterized by Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). Batch sorption studies were conducted to investigate the capacity to separate copper (Cu²⁺), nickel (Ni²⁺), manganese (Mn²⁺), zinc (Zn²⁺), cadmium (Cd²⁺), and hexavalent chromium (Cr⁶⁺) ions from water. Higher PTE separation efficiencies were found with hydrogels containing 1 % MMT, with greater selectivity for Cu²⁺ ions. An exhaustive sorption study revealed that the separation process of Cu²⁺ fits the pseudo-second-order kinetic model and Langmuir isotherm, with maximum sorption capacity (q_max) of ~36.8 mg of hydrogel per g of PTE. This indicates that PC-co-MMT composite hydrogels are efficient alternative sorbents for the selective separation of PTEs from water, with potential application in ecofriendly water purification systems.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106629"},"PeriodicalIF":6.3,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719908","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":"Integrating microplastic management into a broader wastewater decision-making framework. Is activated granular sludge (AGS) a game changer?","authors":"Andre Torre,&nbsp;Ian Vázquez-Rowe,&nbsp;Ramzy Kahhat","doi":"10.1016/j.jwpe.2024.106624","DOIUrl":"10.1016/j.jwpe.2024.106624","url":null,"abstract":"<div><div>Wastewater treatment plants (WWTPs) are not specifically designed to tackle microplastics (MPs), leaving them in aquatic ecosystems. The novelty of our study is a critical review of the effectiveness of conventional activated sludge (CAS), membrane bioreactors (MBRs), and activated granular sludge (AGS) in managing MPs within WWTPs. We bridge a gap in scientific literature by assessing MP removal and resilience to MPs. Our scope extends beyond MPs management, evaluating these technologies against environmental, economic, and social criteria. Findings show that MBR outperforms CAS and AGS in MP removal but faces challenges with smaller MPs due to fouling and secondary pollution. AGS shows similar removal rates to CAS but often superior resilience to MPs, given its higher decontamination capabilities. Environmentally, AGS may better reduce indirect greenhouse gas (GHG) emissions due to lower energy and chemical demands. Moreover, AGS exhibits higher resource recovery potential (e.g., biopolymers, phosphates). Socially, MBR excels in pathogen removal, reducing waterborne disease risks. Economically, AGS is the most cost-effective technology regarding both operational and capital expenditures. However, MPs can impact these criteria by reducing nutrient removal efficiency and increasing both direct and indirect GHGs. MPs create “plastisphere” habitats, reducing pathogen removal and compromising water safety. Moreover, MPs increase energy and chemical use, especially in MBR systems due to fouling concerns.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106624"},"PeriodicalIF":6.3,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702147","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":"Kinetic and mechanistic insights into the evolution of sulfur-centered radicals in transition-metal-activated bisulfite processes","authors":"Huixin Shao ,&nbsp;Jie Chen ,&nbsp;Junlian Qiao ,&nbsp;Haoran Dong ,&nbsp;Irene Man-Chi Lo ,&nbsp;Xiaohong Guan","doi":"10.1016/j.jwpe.2024.106662","DOIUrl":"10.1016/j.jwpe.2024.106662","url":null,"abstract":"<div><div>Transition-metal-activated S(IV) processes hold excellent application potential for decontamination. However, the underlying redox chemistry remains largely obscure, impeding the advancement and practical implementation of these processes. Hence, there is an urgent need to explore the intricate redox chemistry to facilitate the development and application of transition-metal-activated S(IV) processes. In this study, we selected the Ce(IV)/S(IV) process as a representative system and employed kinetic modeling to explore the evolution of sulfur-centered radicals (i.e., SO₃^•−, SO₅^•−, and SO₄^•−) under acidic conditions. The oxidation of S(IV) by various oxidants (i.e., Ce(IV), SO₅^•−, and SO₄^•−) could produce SO₃^•−, which was regarded as a critical sulfur-centered radical for SO₄^•− production. Despite the efficient transformation of SO₅^•− into SO₄^•−, 95.0% of the generated SO₄^•− was rapidly consumed by S(IV) due to its high reactivity towards S(IV). The yield and utilization of SO₄^•− were further investigated using kinetic modeling and experimental methods. The yield of SO₄^•− was independent of target compounds (TCs), whereas the utilization of SO₄^•− by TCs depended on the captured capacity of TCs for SO₄^•−. Moreover, controlling a low dosage of S(IV) significantly improved both the yield and utilization of SO₄^•− in the Ce(IV)/S(IV) process. This work provides valuable insights into the redox chemistry and kinetic behavior of transition-metal-activated S(IV) processes, thereby guiding the development and application of transition-metal-activated S(IV) processes in decontamination.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106662"},"PeriodicalIF":6.3,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719907","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":"Immobilization of solar light-active photocatalyst Cr-TiO2 into the polyurethane/polycaprolactone electrospun membrane for the photocatalytic oxidation of Acid Orange 7","authors":"Nicola Morante,&nbsp;Gianluca Viscusi,&nbsp;Giuliana Gorrasi,&nbsp;Katia Monzillo,&nbsp;Diana Sannino","doi":"10.1016/j.jwpe.2024.106529","DOIUrl":"10.1016/j.jwpe.2024.106529","url":null,"abstract":"<div><div>The considerable presence of organic pollutants, such as Acid Orange 7 (AO7) dye, in wastewater poses significant environmental challenges, necessitating the development of efficient and sustainable purification methods. In this study, we investigated the use of photocatalytic polymeric membranes (PPMs) based on the use of polyurethane (PU)/polycaprolactone (PCL) for the oxidation of AO7 under solar light irradiation on a sol-gel chromium-doped TiO₂ visible active photocatalyst. Our objective was to realize a directly separable and easily recyclable photocatalyst. The photocatalyst was embedded into PU/PCL fibres via electrospinning, with catalyst loadings of 5 %, 10 %, and 20 % (<em>w</em>/w). The good dispersion of the photocatalyst within the fibrous membrane was evidenced by SEM-EDX, Raman, UV–Vis DRS, TGA-DTG and SSA measurements. The effect of catalyst load, pH of the solution, and initial concentration of dye was examined in AO7 photooxidation. Photocatalytic efficiency markedly increases up to 20 % <em>w</em>/w. The greater photocatalytic activity was recorded by treating the solution with 5 ppm of dye and pH = 2, leading to a conversion of 99 % after 3 h. A statistical approach was used to model the AO7 photodegradation by adopting a polynomial equation while scavenger studies suggested a photocatalytic mechanism primarily driven by hydroxyl, hydroperoxyl and superoxide radicals. Additionally, a comparison of the electrical energy consumption (EE/O) under the optimal operating demonstrates a substantial reduction in EE/O with the application of electrospun composite. This result highlights the superior energy efficiency of the easily recoverable photocatalytic system implemented in this work. These findings underscore the potential of PPMs as a sustainable technology for self-cleaning applications within hybrid wastewater treatment systems and underline the valuable role of electrospinning in the development of efficient, solar-active photocatalytic processes.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106529"},"PeriodicalIF":6.3,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Degradation of tetracycline hydrochloride by combined electro-Fenton/zero valent iron/peroxymonosulfate system and coagulation technology","authors":"Pengyu Zhang,&nbsp;Yonggang Zhang","doi":"10.1016/j.jwpe.2024.106637","DOIUrl":"10.1016/j.jwpe.2024.106637","url":null,"abstract":"<div><div>In this study, zero-valent iron (ZVI) is utilized as the source of Fe²⁺ in the electro-Fenton (EF) reaction and as an activator for peroxomonosulfate (PMS) to construct the EF/ZVI/PMS system, which is combined with coagulation technology to enhance the degradation efficiency of organic pollutants, COD, and TOC, thereby reducing the overall reaction time. In the laboratory experiments, tetracycline hydrochloride (TC-HCl) serves as a model for simulated wastewater. The optimization of voltage, ZVI dosage, PMS dosage, electrochemical reaction time, coagulant dosage, and pH levels in the system are optimized through one-way and orthogonal experiments. Employing X-ray photoelectron spectroscopy (XPS), electron spin resonance (ESR), scanning electron microscopy (SEM), zeta potential measurements, Fourier transform infrared spectroscopy (FTIR), and liquid chromatography-mass spectrometry (LC-MS), the synergistic mechanism and degradation pathway of oxidation, coagulation, and adsorption in the combined treatment of ZVI/EF/PMS system and coagulation technology are analyzed. The results show that after EF/ZVI/PMS oxidation treatment, the coagulation performance of wastewater is enhanced, and the subsequent addition of coagulation agents further improves the degradation effect of pollutants through compression of the electric double layer and adsorption and electroneutralization. In addition, the wide applicability of the system to pollutants of different concentrations and types has been verified. The coupling of EF/ZVI/PMS system and coagulation technology overcomes the limitations of low mineralization rates and long treatment times associated with electrochemical oxidation, as well as the inadequate treatment effects of coagulation alone, and provides offering a novel approach for the development of cost-effective and green multi-technology coupling.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106637"},"PeriodicalIF":6.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702067","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}