Journal of water process engineering最新文献_第3页

A two-step hydrothermal synthesis of fly-ash-based ZSM-5 zeolite and its catalytic properties in NO removal 粉煤灰基ZSM-5沸石的两步水热合成及其对NO的催化性能

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-11-30 DOI: 10.1016/j.jwpe.2024.106608

Jing Li , Suxia Ma , Nuo Xu

{"title":"A two-step hydrothermal synthesis of fly-ash-based ZSM-5 zeolite and its catalytic properties in NO removal","authors":"Jing Li , Suxia Ma , Nuo Xu","doi":"10.1016/j.jwpe.2024.106608","DOIUrl":"10.1016/j.jwpe.2024.106608","url":null,"abstract":"<div><div>The pursuit of carbon peaking and carbon neutrality goals necessitates flexible operation and deep peaking of coal-fired units, thus placing heightened demands on nitrogen oxide (NOX) emission control. Fly ash, a solid waste rich in silicon (Si) and aluminum (Al), should be fully leveraged, and the high-value synthesis of zeolite represents a viable utilization method. In this context, fly ash-based zeolite was prepared as a catalyst to facilitate the generation of active oxides from H2O2, combined with alkali solution absorption, to achieve efficient denitrification. This approach effectively transforms ‘waste to pollution’ mitigation. The optimal synthesis conditions for FA-ZSM-5 zeolite were established using the alkali fusion hydrothermal synthesis method, with fly ash as the raw material. The specified conditions were NaOH/FA = 1.2, SiO2/Al2O3 = 40, H2O/Al2O3 = 1325, TPAOH/Al2O3 = 10, ZSM-5-seed addition of 5 %, and a hydrothermal temperature and time of 140 °C for 24 h. Experimental parameters were meticulously investigated to ascertain their impact on nitric oxide (NO) removal efficiency. The highest removal efficiency was achieved under specific conditions: a reaction temperature of 140 °C, an H2O2 concentration of 6 %, a catalyst dose of 0.3 g, an NO concentration of 600 mg/m3, and an SO2 concentration of 1000 mg/m3. Finally, analysis of the catalytic oxidation mechanism revealed that H2O2, when catalyzed by FA-ZSM-5 zeolite, generates ·OH radicals with strong oxidizing properties, thereby facilitating the oxidative removal of NO.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106608"},"PeriodicalIF":6.3,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745578","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

Insights into the removal mechanism of Cr(VI) from groundwater by polypyrrole modified sludge biochar 聚吡咯改性污泥生物炭去除地下水中铬（VI）的机理研究

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-11-30 DOI: 10.1016/j.jwpe.2024.106686

Mian Wu , Xianrong Meng , Lang Yu , Kai Zhao , Wei Xu , Weilin Shi

{"title":"Insights into the removal mechanism of Cr(VI) from groundwater by polypyrrole modified sludge biochar","authors":"Mian Wu , Xianrong Meng , Lang Yu , Kai Zhao , Wei Xu , Weilin Shi","doi":"10.1016/j.jwpe.2024.106686","DOIUrl":"10.1016/j.jwpe.2024.106686","url":null,"abstract":"<div><div>Taking sludge biochar as the raw material and using iron and magnesium as metal sources respectively, two composite materials, polypyrrole magnesium modified biochar (PPy/MBC) and polypyrrole nano-zero-valent iron modified biochar (PPy/nZVI/BC), were prepared by in-situ oxidation polymerization of pyrrole monomers. The removal effects and mechanisms of these composite materials on hexavalent chromium (Cr(VI)) in groundwater were studied. The research results showed that the removal effect of PPy/MBC was superior to that of PPy/nZVI/BC. The highest removal rates of Cr(VI) and Cr(Total) were 170 and 120 mg·g−1 respectively. The adsorption kinetics followed the quasi-second-order kinetics and the adsorption isotherm conformed to the Langmuir adsorption isothermal model. The Elovich model indicated that the adsorption of Cr(VI) by PPy/MBC was a heterogeneous diffusion adsorption dominated by chemical adsorption. Thermodynamic analysis demonstrated that the adsorption of Cr(VI) by PPy/MBC was a spontaneous endothermic reaction. The specific surface area of the modified PPy/MBC reached 26.0824 m2·g−1, which was 7.9 times higher than that of the unmodified biochar. Positively charged nitrogen (-NH·+-), Mg2+ and Cl− in PPy/MBC removed Cr(VI) from groundwater through electrostatic interaction and ion exchange. Most anions and humic acids in groundwater had no significant effect on the removal of chromium by PPy/MBC. In general, the preparation of PPy/MBC composite material was simple, green and environmentally friendly. It had high adsorption removal efficiency and adsorption stability for Cr(VI) in groundwater, and good anti-interference against the background matrix in groundwater. Therefore, it was a promising adsorbent that could efficiently treat Cr(VI) in groundwater.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106686"},"PeriodicalIF":6.3,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142744326","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

Efficient photo-assisted reduction of Cr(VI) via activated carbon mediated Z-scheme FeS2/α-FeOOH/C heterojunction: Focusing on molecular oxygen fate and synergetic reduction mechanism 活性炭介导的Z-scheme FeS2/α-FeOOH/C异质结光辅助Cr（VI）的高效还原研究：基于分子氧宿命和协同还原机制的研究

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-11-30 DOI: 10.1016/j.jwpe.2024.106661

Jing Yu , Yanxiao Chi , Zheren Tang , Yimei Wang , Tao Wang , Zengshuai Zhang , Peng Gu , Xueli Ren , Xinhua Xu , Kunlun Yang

{"title":"Efficient photo-assisted reduction of Cr(VI) via activated carbon mediated Z-scheme FeS2/α-FeOOH/C heterojunction: Focusing on molecular oxygen fate and synergetic reduction mechanism","authors":"Jing Yu , Yanxiao Chi , Zheren Tang , Yimei Wang , Tao Wang , Zengshuai Zhang , Peng Gu , Xueli Ren , Xinhua Xu , Kunlun Yang","doi":"10.1016/j.jwpe.2024.106661","DOIUrl":"10.1016/j.jwpe.2024.106661","url":null,"abstract":"<div><div>Herein, pyrite (FeS2), goethite (α-FeOOH) and activated carbon (C) were combined to construct FeS2/α-FeOOH/C composites with C mediated Z-scheme heterojunction for efficient photo-assisted Cr(VI) reduction. Characterization tests indicated the strong interaction via Fe-O-C and C-S-C, the increased amount of crystal defects and surface oxygenic functional groups, and the decreased agglomeration degree during combination strengthened electron transport and visible light conversion efficiency, resulting in synergistic effect for enhanced Cr(VI) removal. Additionally, C mediated Z-scheme heterojunction with lower resistance facilitated the transfer and separation efficiency of photo-generated carriers, further accelerating Cr(VI) reduction. Consequently, almost 100 % of Cr(VI) was reduced via FeS2/α-FeOOH/C in 60 min, 4 times that of pristine FeS2. Quenching, EPR and control experiments confirmed photocatalysis made more contribution than single reductive reagents (FeS2) in Cr(VI) reduction. The specific contribution rate of reductive species like e−, Fe2+, S22− and •O2− in this complicated system was firstly detailedly demonstrated and •O2− played a predominant role under oxic condition. Meanwhile, oxidative species like H2O2, 1O2 and •OH ascribed to DO activation or photo-generated h+ preferred to reacted with Fe2+ and S22− with higher reducibility and-only delayed Cr(VI) reduction rate. Hence, the final total Cr(VI) removal efficiency and generated Cr(III) kept stable in oxic solution.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106661"},"PeriodicalIF":6.3,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142744385","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

Occurrence characteristics, removal efficiencies and potential health risks of typical viruses in rural domestic sewage: A review 农村生活污水中典型病毒的发生特征、去除效率及潜在健康风险综述

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-11-30 DOI: 10.1016/j.jwpe.2024.106611

Yingming Zhu , Su Xu , Yu Zhou , Xuesong Guo , Yunping Han , Jun Zhan , Lin Li , Junxin Liu

{"title":"Occurrence characteristics, removal efficiencies and potential health risks of typical viruses in rural domestic sewage: A review","authors":"Yingming Zhu , Su Xu , Yu Zhou , Xuesong Guo , Yunping Han , Jun Zhan , Lin Li , Junxin Liu","doi":"10.1016/j.jwpe.2024.106611","DOIUrl":"10.1016/j.jwpe.2024.106611","url":null,"abstract":"<div><div>Dissimilar sources, treatment processes, resource-oriented models, lack of disinfection, and proximity to living areas may contribute to distinct virus occurrence, removal efficiencies, and risks in rural compared to urban sewage. This study reviews research on viruses in rural domestic sewage from 2000 to 2024, comparing virus removal efficiencies of common rural treatment processes and identifying potential health risks. It finds that typical virus species in rural sewage resemble those in urban areas but at lower concentrations, with a higher prevalence of animal and plant viruses. The concentrations of typical virus range from 102 to 108 GC/L in influent and 100 to 106 GC/L in effluent. Among existing treatment processes, ecological treatment is more effective in virus removal (0.6 log10 to complete removal), whereas contact oxidation, commonly used in rural settings, has relatively low efficacy (0.2–3.0 log10). Effluent discharge (101–1010 GC/L), excess sludge utilization (102–1010 GC/(g wet wt.)), and fugitive gas (103–107 GC/m3) from treatment processes heighten potential risks of virus exposure. This study conducts a comprehensive analysis of existing research, enhancing understanding of the potential risks and research significance of viruses in rural domestic sewage. It underscores the importance of developing virus research and control strategies under current context and proposes several future research directions in conjunction with existing analyses, including migration pathways, detailed removal mechanism, control technologies, and comprehensive risk assessment of viruses in rural sewage.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106611"},"PeriodicalIF":6.3,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142744330","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}

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Preparation of high oxygen vacancies catalyst CeO2/Al2O3-SiC and its mechanism in enhancing the catalytic ozonation of organic pollutants in coal chemical wastewater 高氧空位催化剂CeO2/Al2O3-SiC的制备及其对煤化工废水中有机污染物的催化臭氧化作用机理

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-11-30 DOI: 10.1016/j.jwpe.2024.106684

Pengfei Li , Yongjun Liu , Zhuangzhuang Yang , Lu Yang , Pan Liu , Zhe Liu , Xiaowei Li

{"title":"Preparation of high oxygen vacancies catalyst CeO2/Al2O3-SiC and its mechanism in enhancing the catalytic ozonation of organic pollutants in coal chemical wastewater","authors":"Pengfei Li , Yongjun Liu , Zhuangzhuang Yang , Lu Yang , Pan Liu , Zhe Liu , Xiaowei Li","doi":"10.1016/j.jwpe.2024.106684","DOIUrl":"10.1016/j.jwpe.2024.106684","url":null,"abstract":"<div><div>The complete harmless treatment of aromatic organic compounds in coal chemical wastewater (CCW) has always been a big challenge in water process engineering. This study addresses the issue by designing and preparing a kind of Ce and Al bimetallic catalyst with high oxygen vacancies (OVs) based on SiC carrier. The results showed that CeO2 and Al2O3 were uniformly dispersed on SiC, and the composite material exhibited an ordered cubic structure. The degradation efficiency and enhancement mechanism of the catalyst with ozone oxidation were investigated. When applied to actual CCW with a chemical oxygen demand (COD) concentration exceeding 600 mg/L, the synergy between O3 and CeO2/Al2O3-SiC increased the degradation efficiency of phenols from 50 % to 99 % and COD from 42 % to 78 % compared to using O3 alone. CeO2/Al2O3-SiC had a high concentration of oxygen vacancies (OVs = 48.57 %). Further research indicated that oxygen vacancies (OVs) were the main active sites for ozone adsorption and reactive oxygen species (ROSs) generation. Electron paramagnetic resonance (EPR) and quenching experiments also confirmed that O3, •O2−1, 1O2 were the main active oxidation factors, rather than •OH. Additionally, even after granulating the catalyst, it still achieved 99 % degradation of phenols. Therefore, this study provides theoretical support for the complete harmless treatment of CCW and has broad prospects for industrial application.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106684"},"PeriodicalIF":6.3,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757794","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

Degradation mechanism of organic contaminants in complex contaminated groundwater in landfill sites with oxygen micro-nano-bubbles aeration 氧微纳泡曝气降解垃圾填埋场复杂污染地下水中有机污染物的机理

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-11-30 DOI: 10.1016/j.jwpe.2024.106635

Mei Bai , Yonggang Jia , Zhibin Liu , Haitao Yu , Changhui Gao , Zhu Liu

{"title":"Degradation mechanism of organic contaminants in complex contaminated groundwater in landfill sites with oxygen micro-nano-bubbles aeration","authors":"Mei Bai , Yonggang Jia , Zhibin Liu , Haitao Yu , Changhui Gao , Zhu Liu","doi":"10.1016/j.jwpe.2024.106635","DOIUrl":"10.1016/j.jwpe.2024.106635","url":null,"abstract":"<div><div>Complex contaminated groundwater in landfill sites poses a significant health threat. Oxygen micro-nano-bubbles (MNB<img>O2) aeration shows promise for remediation of such complex contaminated groundwater, while its mechanism for degradation contaminants remained unclear. This study investigated the degradation mechanism of organic contaminants in complex contaminated groundwater in landfill sites with MNB-O2 aeration by contaminants degradation process and efficiency, dissolved organic matter (DOM) transformation as well as enzyme activity and microorganism. The test results indicated that after 105th day of MNB-O2 aeration, the removal efficiencies of 5-day biological oxygen demand, chemical oxygen demand and α(254) in the water sample were 92.64 %, 50.56 % and 77.03 %, respectively. Additionally, the refractory DOM increased by 3 % to 11 %, while biodegradable DOM decreased by 57.63 %. MNB-O2 aeration enhanced the activity of aerobic microorganisms but reduced the diversity, evenness and richness of microbial species in the soil sample. Moreover, it altered the microbial community of the soil sample and enhanced oxidation of organic substance in the water sample. MNB-O2 aeration enhanced the biodegradation of the water sample, and its enhanced volatilization and strong chemical oxidation also contributed to organic contaminants degradation in the water sample. Collectively, the finding of this work will provide theoretical support for the practical application of MNB-O2 aeration in remediation of complex contaminated groundwater in landfill sites.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106635"},"PeriodicalIF":6.3,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142744384","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

Antibiotic residues and antibiotic resistance genes in African water systems: Implications for safe drinking water, aquatic ecosystems, and Sustainable Development Goals 非洲水系统中的抗生素残留和抗生素耐药基因：对安全饮用水、水生生态系统和可持续发展目标的影响

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-11-30 DOI: 10.1016/j.jwpe.2024.106636

Emmanuel Sunday Okeke , Chidiebele Emmanuel Ikechukwu Nwankwo , Timothy Prince Chidike Ezeorba , Martins Obinna Ogugofor , Charles Ogugua Nwuche

{"title":"Antibiotic residues and antibiotic resistance genes in African water systems: Implications for safe drinking water, aquatic ecosystems, and Sustainable Development Goals","authors":"Emmanuel Sunday Okeke , Chidiebele Emmanuel Ikechukwu Nwankwo , Timothy Prince Chidike Ezeorba , Martins Obinna Ogugofor , Charles Ogugua Nwuche","doi":"10.1016/j.jwpe.2024.106636","DOIUrl":"10.1016/j.jwpe.2024.106636","url":null,"abstract":"<div><div>The overuse of antimicrobial compounds, over the years, has caused an accumulation of antibiotic residues (AR) in African waters. The use of antibiotics grew substantially from 2000 to 2018, in sub-Saharan Africa (SSA) with a 46 % increase in daily consumption, from 9.8 to 14.3 defined daily doses (DDD) per 1000 people. AR arrive in effluents from different sources or as metabolized human and animal administration products. The uncontrolled seepage of antibiotic residues into wastewaters promotes the dissemination of antibiotic resistance genes (ARGs), thus enhancing the dissemination of antibiotic resistance and complicates treatment efforts globally. The review summarizes the current literature on the status of the African water systems, especially in Africa. Critical information on the emergence of AR/ARG and their implications to attaining millenium sustainable development goals were addressed. Further, the mechanisms of AR/ARG transmission and spread in the African waters were elucidated to be enhanced by predisposing factors widely available in Africa. Specifically, selective pressure mounted by the AR and ARGs, enhanced by open defecation, poor waste management and policy gaps, impact key biological processes and the knowledge gap existing on the effects of the AR on aquatic plants, microbial communities, fishes, and invertebrates were adequately discussed. Remarkably, direct impacts of AR and ARG on biogeochemistry and the overall quality of aquatic life were noted. Modern monitoring and detection methods were extensively discussed, including the challenges associated with effective water treatment. Here, we also discussed eco-friendly management strategies and identifies research gaps, providing a roadmap for future studies.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106636"},"PeriodicalIF":6.3,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142744332","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

Ultrafiltration membrane fouling of microalgae-derived intracellular organic matter exposed to pharmaceuticals and personal care products (PPCPs) 微藻源胞内有机物暴露于药品和个人护理用品（PPCPs）的超滤膜污染

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-11-29 DOI: 10.1016/j.jwpe.2024.106674

Weiwei Huang , Hongkai Xu , Lei Yao , Tian Li , Yongting Qiu , Hongjian Yu , Huan He , Chunzhong Wei , Junxia Liu , Wenzong Zhou , Bingzhi Dong , Bing Wu

{"title":"Ultrafiltration membrane fouling of microalgae-derived intracellular organic matter exposed to pharmaceuticals and personal care products (PPCPs)","authors":"Weiwei Huang , Hongkai Xu , Lei Yao , Tian Li , Yongting Qiu , Hongjian Yu , Huan He , Chunzhong Wei , Junxia Liu , Wenzong Zhou , Bingzhi Dong , Bing Wu","doi":"10.1016/j.jwpe.2024.106674","DOIUrl":"10.1016/j.jwpe.2024.106674","url":null,"abstract":"<div><div>The frequent algae bloom induces the release of intracellular organic matter (IOM), which plays a significant role in the ultrafiltration (UF) process. The growth of algae is greatly impacted by the surrounding aquatic environment, including the pharmaceuticals and personal care products (PPCPs) due to their extensive use in the past decades. Thus, the release of IOM and the associated UF membrane performance are also affected by the PPCPs exposure. However, such studies have seldomly been reported before. In this study, the effects of two typical PPCPs (e.g., carbamazepine, CMZ and diclofenac sodium, DFC) exposure on the release of IOM and membrane filtration performance during UF of microalgae-laden water were systematically investigated. The results showed that when the microalgae were exposed to CMZ (0.25–100 μg/L), their produced IOM led to more irreversible fouling resistance (Rb), while the reversible fouling resistances (Rc) were reduced under low CMZ exposure (0.25 μg/L) but elevated at a high dosage of CMZ (> 1 μg/L). On the contrary, the exposure of DFC (0.25–1000 μg/L) caused a reduced Rb and an increased Rc. Further analysis revealed that Rb was positively correlated with the micromolecules released by microalgae, while the change of Rc was ascribed to the promoted/suppressed synthesis of macromolecules forming a cake layer. Nevertheless, reversible fouling played a primary role on IOM fouling development regardless of the exposure to CMZ and DFC. Our findings have significant implications for further identifying suitable fouling control strategies during UF of microalgae-laden water coexisting with PPCPs.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106674"},"PeriodicalIF":6.3,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745471","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 nutrient removal from aquaculture wastewater using optimized constructed wetlands: A comprehensive screening of microbial complexes, substrates, and macrophytes 利用优化的人工湿地增强水产养殖废水的营养去除：微生物复合物、基质和大型植物的综合筛选

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-11-29 DOI: 10.1016/j.jwpe.2024.106634

Farhan Nabi , Yaqin Peng , Rakhwe Kama , Sumbal Sajid , Fareed Uddin Memon , Chongjian Ma , Huashou Li

{"title":"Enhanced nutrient removal from aquaculture wastewater using optimized constructed wetlands: A comprehensive screening of microbial complexes, substrates, and macrophytes","authors":"Farhan Nabi , Yaqin Peng , Rakhwe Kama , Sumbal Sajid , Fareed Uddin Memon , Chongjian Ma , Huashou Li","doi":"10.1016/j.jwpe.2024.106634","DOIUrl":"10.1016/j.jwpe.2024.106634","url":null,"abstract":"<div><div>Constructed wetlands (CWs) are widely used to treat wastewater from aquaculture, and their efficiency largely depends on active components like microbes, substrates, and macrophytes. This study screened various commercial microbial complexes, substrates, and macrophytes for their effectiveness in removing nitrogen and phosphorus from pond wastewater contaminated with fish feed and excreta (CPW). Four microbial complexes (MC1, MC2, MC3, and MC4) were screened, two substrate types (zeolite and ceramsite), and five common macrophytes—Pontederia crassipes (PC), Myriophyllum aquaticum (MA), Canna indica (CI), Typha latifolia (TL), and Phragmites australis (PA). Screening evaluation included COD, total nitrogen (TN), ammonium nitrogen (AN), nitrate nitrogen (NN), and total phosphorus (TP) removal. Among microbial complexes, MC3 at 1.0 g/L (MC3-T2) exhibited the highest efficiency in COD (56 %), TN (66 %), AN (51 %), NN (69 %), and TP (59 %) removal. Screening of macrophytes showed that MA was most efficient with a decrease of 61 % COD, 91 % TN, 62 % AN, 84 % NN, and 69 % TP. Similarly, between both substrates, zeolite most effective, with 50–25 % COD, 12–7 % TN, 44–28 % AN, 71–47 % NN, and 45–19 % TP removal over six periods. Based on these findings, four artificial CWs were developed, with CW-2 (which carries MA, CI, MC3-T2, and zeolite) showed the highest removal of COD (57–43 %), TN (29–11 %), AN (65–28 %), NN (87–69 %), and TP (80–47 %) over eight periods. The development of CWs by utilizing these optimal components (particularly CW-2) provides highly effective solutions for excessive nutrients removal from CPW. This innovative approach presents a promising alternative for mitigating eutrophication and enhancing wastewater treatment processes.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106634"},"PeriodicalIF":6.3,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745579","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

Performance and mechanisms of reactive substrates in constructed wetlands: Emerging contaminant removal and greenhouse gas mitigation—A comprehensive review 人工湿地中活性基质的性能和机制：新出现的污染物去除和温室气体减缓-综合综述

IF 6.3 2区工程技术

Journal of water process engineering Pub Date : 2024-11-29 DOI: 10.1016/j.jwpe.2024.106653

Nianwen Chen , Jian Zhang , Zhen Hu , Yanlong Wang , Chongyang Ren , Longlong Zhang , Guang Yang , Xinhan Chen , Huaqing Liu

{"title":"Performance and mechanisms of reactive substrates in constructed wetlands: Emerging contaminant removal and greenhouse gas mitigation—A comprehensive review","authors":"Nianwen Chen , Jian Zhang , Zhen Hu , Yanlong Wang , Chongyang Ren , Longlong Zhang , Guang Yang , Xinhan Chen , Huaqing Liu","doi":"10.1016/j.jwpe.2024.106653","DOIUrl":"10.1016/j.jwpe.2024.106653","url":null,"abstract":"<div><div>Emerging contaminants (ECs) comprise a diverse group of chemical species with complex structures and varying degrees of persistence, posing significant long-term environmental risks. Constructed wetlands (CWs) are increasingly recognized for their ability to remove ECs from various environmental matrices. Recent advancements in reactive substrates have demonstrated enhanced physicochemical properties, such as improved adsorption capacity, electrical conductivity, and redox potential. These advancements not only mitigate the adverse effects of trace ECs on microbial communities and plants in CWs but also enhance the stability of EC removal processes and reduce greenhouse gas (GHG) emissions. However, detailed reviews of the efficacy and mechanisms of reactive substrates in CWs for the removal of various ECs and the reduction of GHG emissions are still lacking. This review provides a comprehensive overview of the removal capabilities and mechanisms associated with four key reactive substrates: zeolite, biochar, manganese ore, and iron ore. The focus is on their effectiveness against antibiotic resistance genes (ARGs), persistent organic pollutants (POPs), endocrine-disrupting chemicals (EDCs), per- and polyfluoroalkyl substances (PFASs), and pharmaceuticals and personal care products (PPCPs). Additionally, the review examines the role of carbon-based and metal-based substrates in mitigating methane (CH4) and nitrous oxide (N2O) emissions within CWs, highlighting their effects and underlying mechanisms. This review offers valuable insights and guidance for achieving sustainable ECs treatment and GHG reduction in CWs.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106653"},"PeriodicalIF":6.3,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142744328","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}

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