Water and Environment Journal最新文献_第5页

Long‐term monitoring of the microbial quality and Legionnaires' disease risk in tap water from mass catering establishments 大规模餐饮场所自来水中微生物质量和军团病风险的长期监测

IF 2 4区环境科学与生态学

Water and Environment Journal Pub Date : 2023-08-31 DOI: 10.1111/wej.12899

Murat Ay

{"title":"Long‐term monitoring of the microbial quality and Legionnaires' disease risk in tap water from mass catering establishments","authors":"Murat Ay","doi":"10.1111/wej.12899","DOIUrl":"https://doi.org/10.1111/wej.12899","url":null,"abstract":"Legionnaires' disease is caused by Legionella (L.) pneumophila. Inhaling aerosolized water containing this bacteria is the most common transmission route. Shower heads used in the catering industry's dishwashing units are also potential amplifying systems for bacteria and possible sources of infection by generating droplets and aerosols. Therefore, these systems should not contain pathogenic bacteria. This study aims to monitor the microbial quality, Legionnaires' disease risk and L. pneumophila presence in tap water samples from the water outlet of the shower‐type dishwashing unit of mass catering establishments for a year. Seventy‐two tap water samples were microbiologically tested for total mesophilic aerobic bacteria count, coliform, Escherichia (E.) coli and L. pneumophila. DNA was isolated from L. pneumophila‐positive samples, and their serogroup was characterized by real‐time PCR. The correlation between seasonal variation and prevalence of L. pneumophila serogroup and L. pneumophila and other indicator bacteria were statistically tested by Spearman rank test (p < 0.05). Findings showed that 17 (24%) samples had microbial growth, 14 (19.4%) were positive for L. pneumophila and 13 isolates were characterized as L. pneumophila serogroup 1. The statistical analysis showed no significant correlation between seasonal variation (p = 0.491) and L. pneumophila and total mesophilic aerobic bacteria count, coliform and E. coli (p = 0.923). Overall, Legionella spp. is an essential indicator of the microbial quality in the tap water from mass catering establishments and should be regularly monitored for public health independently from seasonal variation and other indicator bacteria.","PeriodicalId":23753,"journal":{"name":"Water and Environment Journal","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45516807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Runoff water loaded with road de‐icing salts: Occurrence, environmental impact and treatment processes 载有道路除冰盐的径流：发生、环境影响和处理过程

IF 2 4区环境科学与生态学

Water and Environment Journal Pub Date : 2023-08-09 DOI: 10.1111/wej.12897

Mitra Ebrahimi Gardeshi, Hamed Arab, Alae Benguit, P. Drogui

引用次数: 0

Advancements in water and ecological risk assessment in the Yellow River Delta, North China: Implications for legal frameworks in environmental protection and public health 黄河三角洲水与生态风险评估进展:对环境保护和公共卫生法律框架的影响

IF 2 4区环境科学与生态学

Water and Environment Journal Pub Date : 2023-08-08 DOI: 10.1111/wej.12895

Yifan Huo, Mei Yang, Mengyue Lei, Peng Wu, Xiaohe Tian, Tingzhang Yang, Zhaowen Wang, Yan Mao

{"title":"Advancements in water and ecological risk assessment in the Yellow River Delta, North China: Implications for legal frameworks in environmental protection and public health","authors":"Yifan Huo, Mei Yang, Mengyue Lei, Peng Wu, Xiaohe Tian, Tingzhang Yang, Zhaowen Wang, Yan Mao","doi":"10.1111/wej.12895","DOIUrl":"https://doi.org/10.1111/wej.12895","url":null,"abstract":"The Yellow River Delta (YRD) is an important agricultural and industrial region in China, yet its water resources have been increasingly affected by shortages and pollution due to human activities and the impact of climate change. This has resulted in severe damage to the water ecosystem in the YRD, thereby necessitating the adoption of effective legal measures to safeguard these resources. This paper provides a comprehensive review of recent research findings on water resources and water ecology in the YRD. Specifically, it summarizes the changes and characteristics of the geographical distribution, quantity and quality of water resources in the region and analyzes the effects of climate change, economic development and population growth on water resources. In light of the vulnerability and risks to the water resources and ecosystems in this area, this paper evaluates the impact of human activities on regional water security and proposes strategies for the sustainable utilization of water resources and the protection of public health. The insights and measures presented in this paper provide valuable guidance and references for water resource management and environmental protection in the YRD.","PeriodicalId":23753,"journal":{"name":"Water and Environment Journal","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42272172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modelling of contaminant transport in heterogeneous vertical barrier 污染物在非均质垂直屏障中传输的建模

IF 2 4区环境科学与生态学

Water and Environment Journal Pub Date : 2023-08-07 DOI: 10.1111/wej.12896

Shaoyi Wang, Jiawei Wu, Cai Peifu, Chen Cong, Shenghua Ye, Jianqiang Xu, Chen Liang, Xiaoyong Luo, Wei Jun

{"title":"Modelling of contaminant transport in heterogeneous vertical barrier","authors":"Shaoyi Wang, Jiawei Wu, Cai Peifu, Chen Cong, Shenghua Ye, Jianqiang Xu, Chen Liang, Xiaoyong Luo, Wei Jun","doi":"10.1111/wej.12896","DOIUrl":"https://doi.org/10.1111/wej.12896","url":null,"abstract":"Vertical barrier technique is an ideal candidate for site contamination control. In practical application, the characteristic of vertical cut‐off wall is heterogeneous with permeability decreases with depth due to the increasing geostatic stress. In this study, a numerical model was established considering the coupling effect of groundwater flow and contaminant transport considering depth dependent permeability. The results showed that a heterogeneous barrier with variable permeability can reduce the breakthrough time by 63.7% compared to a fixed permeability barrier. The contaminant concentration inside the wall was up to 10 times higher than outside. Shallow leakage occurs where the horizontal migration is dominated by advection. The distribution of pore‐water pressure in the system after the installation of high‐density polyethylene (HDPE) membranes significantly reduced the shallow convective effect by reducing up to 90% pore‐water pressure. Reinforcing the vertical barrier wall using HDPE membrane can effectively prevent the shallow leakage caused by the heterogeneity.","PeriodicalId":23753,"journal":{"name":"Water and Environment Journal","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48919375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Editorial Volume 37 Issue 3 社论第37卷第3期

IF 2 4区环境科学与生态学

Water and Environment Journal Pub Date : 2023-07-18 DOI: 10.1111/wej.12894

Pedro A. García Encina

引用次数: 0

Drainage models: An evaluation of their applicability for the design of drainage systems in arid regions 排水模型：评估其在干旱地区排水系统设计中的适用性

IF 2 4区环境科学与生态学

Water and Environment Journal Pub Date : 2023-07-18 DOI: 10.1111/wej.12893

Murad Ellafi, R. Simmons, L. Deeks

引用次数: 0

Classification of water subscribers by machine learning algorithms 通过机器学习算法对用水用户进行分类

IF 2 4区环境科学与生态学

Water and Environment Journal Pub Date : 2023-07-14 DOI: 10.1111/wej.12892

Arezoo Dahesh, R. Tavakkoli-Moghaddam, AmirReza Tajally, Aseman Erfani‐Jazi, Milad Babazadeh‐Behestani

引用次数: 0

Developments and expansions of a suite of trickling filters models 一套滴滤器模型的发展和扩展

IF 2 4区环境科学与生态学

Water and Environment Journal Pub Date : 2023-07-01 DOI: 10.1111/wej.12888

Peter Pearce

引用次数: 0

TiO2‐WO3 nanocube‐polyaniline hierarchical membrane for efficient removal of chromium in a photocatalytic membrane reactor TiO2‐WO3纳米立方体聚苯胺分级膜在光催化膜反应器中有效去除铬

IF 2 4区环境科学与生态学

Water and Environment Journal Pub Date : 2023-06-28 DOI: 10.1111/wej.12890

T. Rathna, JagadeeshBabu PonnanEttiyappan, D. Sudhakar

{"title":"TiO2‐WO3 nanocube‐polyaniline hierarchical membrane for efficient removal of chromium in a photocatalytic membrane reactor","authors":"T. Rathna, JagadeeshBabu PonnanEttiyappan, D. Sudhakar","doi":"10.1111/wej.12890","DOIUrl":"https://doi.org/10.1111/wej.12890","url":null,"abstract":"In this article, the rational design of a physically coated TiO2‐WO3 nanocube‐polyaniline photocatalytic membrane (hierarchical) reactor for the efficient reduction of chromium (VI) under visible light is discussed. The incorporation of TiO2‐WO3 in the polyaniline (PANI) membrane provides excellent hydrophilicity and high photo‐corrosion resistance and facilitates the rapid permeation of water with a flux rate of 12 L/m2 h and higher Cr (VI) reduction. The exposure of bare PANI membranes in Cr (VI) solution leads to over‐oxidation of PANI membrane and eventually leads to the destruction of the membrane. The hierarchical photocatalytic coating improves the lifetime of the membrane by blocking it from deprotonation. The photocatalytic membrane could offer 79.30% Cr (VI) reduction under visible light irradiation in a photocatalytic membrane reactor. After several reduction cycles, the membrane showed good self‐cleaning ability. The present work suggests that TiO2‐WO3 nanocube‐coated PANI hierarchical membrane is a promising approach for the reduction and removal of Cr (VI) from wastewater.","PeriodicalId":23753,"journal":{"name":"Water and Environment Journal","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42381268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Enhanced catalytic levofloxacin degradation via persulfate activation over amorphous potassium ferricyanide@ZIF‐67 nanocages 通过过硫酸盐活化无定形钾ferricyanide@ZIF‐67纳米笼增强催化左氧氟沙星降解

IF 2 4区环境科学与生态学

Water and Environment Journal Pub Date : 2023-06-27 DOI: 10.1111/wej.12887

M. Wang, Zhanmeng Liu

{"title":"Enhanced catalytic levofloxacin degradation via persulfate activation over amorphous potassium ferricyanide@ZIF‐67 nanocages","authors":"M. Wang, Zhanmeng Liu","doi":"10.1111/wej.12887","DOIUrl":"https://doi.org/10.1111/wej.12887","url":null,"abstract":"A facile method was used to synthesize amorphous potassium ferricyanide (PF)@ZIF‐67 nanocages, a novel metal–organic framework derivative. The structure, composition and morphology of PF@ZIF‐67 were analysed by scanning electron microscopy, transmission electron microscope, X‐ray diffraction and X‐ray photoelectron spectroscopy. The results show that PF@ZIF‐67 nanoparticles were successfully prepared and its nanostructure has high crystallinity. The prepared materials were employed as heterogeneous persulfate catalysts for the degradation of levofloxacin (LEV). The effects of some key parameters including sodium persulfate (PS) dosage, PF@ZIF‐67, initial solution pH and reaction time on LEV degradation were investigated. PF@ZIF‐67 showed higher catalytic capacity for LEV degradation compared to ZIF‐67, implying the iron‐cobalt synergy in the material. Under the optimized conditions of 8.4‐mM PS, 0.5 g/L PF@ZIF‐67 at an initial solution pH of 7.2, 85.8% of LEV could be removed within 240 min. The quenching experiments suggest that sulfate radicals were the predominant reactive species.","PeriodicalId":23753,"journal":{"name":"Water and Environment Journal","volume":" ","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47607835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0