Clean-soil Air Water最新文献_第5页

C, N, and P contributions to sediments of two Venezuelan coastal lagoons and their relationships with the adsorption of P 委内瑞拉两个沿海泻湖沉积物中的碳、氮和磷含量及其与磷吸附的关系

IF 1.5 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2024-08-22 DOI: 10.1002/clen.202300266

Danilo López-Hernández, Leidy Morales, Karelys Umbría-Salinas, Astolfo Valero, Williams Melendez, Ana López-Contreras

{"title":"C, N, and P contributions to sediments of two Venezuelan coastal lagoons and their relationships with the adsorption of P","authors":"Danilo López-Hernández, Leidy Morales, Karelys Umbría-Salinas, Astolfo Valero, Williams Melendez, Ana López-Contreras","doi":"10.1002/clen.202300266","DOIUrl":"10.1002/clen.202300266","url":null,"abstract":"In Unare and Píritu Coastal Lagoons, a study was carried out to assess the effect of C, N, and P load contributions on the capability of the sediments to immobilize phosphates. To achieve the later, the geochemical data of the sediments were coupled to the P-sorption index of Bache and Williams (IBW). In both lagoons, the sediments showed a pH > 7 because of calcareous sedimentation. The inorganic carbon values in the lagoons displayed a spatial distribution with higher concentrations toward the shores, that is defined by the carbonate lithology. On the contrary, the inner part of the lagoons was characterized by the presence of organic materials associated to the clay. The phosphorus content in the Unare Lagoon ranged from 290 to 625 mg kg−1, whereas in the Píritu Lagoon the values fluctuated between 213 and 1013 mg kg−1. The highest concentrations of phosphorus in both lagoons could be linked to sewage and runoff input from agricultural and livestock activities around the lagoon systems. The IBW displayed adsorption average values of 21.97 and 27.42 for Unare and Píritu Lagoon, respectively, corresponding to a rather low P sorption. In Unare Lagoon, the IBW showed positive correlations with C, N and Felabile but negative with P. However, in the Píritu Lagoon, despite the analogous lithology of the lagoons, a slightly positive non-significative correlation between IBW and IC was only found. Although the sediments adsorb P with a rather low capacity, they can mitigate the eutrophication process in the studied lagoons.","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"52 10","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194642","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

Issue Information: Clean Soil Air Water. 8/2024 问题信息：清洁土壤、空气和水。8/2024

IF 1.5 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2024-08-15 DOI: 10.1002/clen.202470081

引用次数: 0

Exposure assessment of severe acute respiratory syndrome coronavirus 2 and norovirus genogroup I/genogroup II in aerosols generated by a municipal wastewater treatment plant 城市污水处理厂产生的气溶胶中严重急性呼吸系统综合征冠状病毒 2 和诺如病毒 I 基因组/II 基因组的暴露评估

IF 1.5 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2024-08-15 DOI: 10.1002/clen.202300267

José Gonçalves, Andrés Felipe Franco, Priscilla Gomes da Silva, Elisa Rodriguez, Israel Diaz, Maria José González Peña, João R. Mesquita, Raul Muñoz, Pedro Garcia-Encina

{"title":"Exposure assessment of severe acute respiratory syndrome coronavirus 2 and norovirus genogroup I/genogroup II in aerosols generated by a municipal wastewater treatment plant","authors":"José Gonçalves, Andrés Felipe Franco, Priscilla Gomes da Silva, Elisa Rodriguez, Israel Diaz, Maria José González Peña, João R. Mesquita, Raul Muñoz, Pedro Garcia-Encina","doi":"10.1002/clen.202300267","DOIUrl":"https://doi.org/10.1002/clen.202300267","url":null,"abstract":"The presence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in wastewater and its potential as an airborne transmission source require extensive investigation, particularly in wastewater treatment plants (WWTPs), where few studies have been conducted. The aim of this study was to investigate the presence of SARS-CoV-2 and norovirus (NoV) RNA in wastewater and air samples collected from a municipal WWTP. In addition, the study assessed the potential risk of viral exposure among WWTP employees. In both the summer and winter campaigns of this study, SARS-CoV-2 and NoV RNA were quantified in wastewater/sludge samples other than effluent. Viral RNA was not detected in any of the air samples collected. The exposure risk assessment with the SARS-CoV-2 RNA concentrations in the influent pumping station of this study shows a lower risk than the calculation with the historical data provided by AquaVall, but both show a low-to-medium exposure risk for the WWTP workers. The sensitivity analysis shows that the result of the model is strongly influenced by the SARS-CoV-2 RNA quantification in the wastewater. This study underscores the need for extensive investigations into the presence and viability of SARS-CoV-2 in wastewater, especially as a potential airborne transmission source within WWTPs.","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"52 9","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/clen.202300267","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Concentrations and health risk assessment of selected cations and anions in drinking water in Antalya, Türkiye 土耳其安塔利亚饮用水中某些阳离子和阴离子的浓度及健康风险评估

IF 1.5 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2024-08-09 DOI: 10.1002/clen.202300451

Murat Kilic

引用次数: 0

Arsenic and zinc concentrations in wheat grains under soil zinc application and arsenic-contaminated irrigation 土壤施锌和砷污染灌溉条件下小麦籽粒中的砷和锌浓度

IF 1.5 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2024-08-06 DOI: 10.1002/clen.202300106

Ammara Basit, Shahid Hussain

{"title":"Arsenic and zinc concentrations in wheat grains under soil zinc application and arsenic-contaminated irrigation","authors":"Ammara Basit, Shahid Hussain","doi":"10.1002/clen.202300106","DOIUrl":"10.1002/clen.202300106","url":null,"abstract":"Above-permissible levels of arsenic (As) in irrigation water lead to toxic levels in wheat grains, increasing health risks for humans. In this study, two zinc (Zn)-biofortified wheat (Triticum aestivum L.) cultivars (Akbar-2019 and Zincol-2016) were grown in pots with two Zn application rates (0 and 8 mg Zn kg−1) and three levels of As in irrigation water (distilled-water control, 100 and 1000 µg As L−1). Irrigation with As-contaminated water decreased dry matter yields, concentrations of grain phosphorus (P) and Zn, and estimated daily intake (EDI) of Zn. Conversely, it increased grain As concentration and As EDI. Soil Zn application mitigated the negative effects of As on dry matter yields of both cultivars while simultaneously enhancing grain Zn concentration and Zn EDI. On average, Zn application increased grain Zn concentration by 114% compared to no Zn application. Additionally, Zn application decreased grain As concentration at all As levels. In conclusion, this study suggests that applying Zn to Zn-biofortified wheat irrigated with As-contaminated water can mitigate the toxic effects of As on wheat. It increase Zn concentration and decrease As concentration in wheat grains, which is vital for enhancing grain quality for human consumption.","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"52 9","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141932480","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

Assessment of temporal and spatial variations of water quality parameters in the Zarafshan River basin 扎拉夫山河流域水质参数的时空变化评估

IF 1.5 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2024-07-29 DOI: 10.1002/clen.202300454

Shobegim Shoergashova, Tie Liu, Nigora Ibrokhimova, Liliya Latisheva, Bakhtiyor Karimov

{"title":"Assessment of temporal and spatial variations of water quality parameters in the Zarafshan River basin","authors":"Shobegim Shoergashova, Tie Liu, Nigora Ibrokhimova, Liliya Latisheva, Bakhtiyor Karimov","doi":"10.1002/clen.202300454","DOIUrl":"10.1002/clen.202300454","url":null,"abstract":"River ecosystems in Central Asia face significant stress from environmental changes and pollution. This study assesses temporal and spatial variations in water quality parameters within the Zarafshan River Basin using retrospective data and field measurements. Water quality indicators, including electrical conductivity (EC), total suspended solids (TSS), ammonium nitrogen (N-NH4), nitrite nitrogen (N-NO2), nitrate nitrogen (N-NO3), temperature (T), chemical oxygen demand (COD), dissolved oxygen (DO), and discharge, were analyzed using the Pearson's correlation coefficient and ANOVA, with the Mann–Kendall (MK) test detecting trends over time. Obtained results indicate significant seasonal effects with elevated TSS during summer, increasing sediment load and changing aquatic habitats. The strong inverse correlation (–0.89) between DO and N-NH4 signifies ecological challenges particularly in low DO concentrations during summer (3.25 mg L–1). Long-term analysis identifies Navoiazot chemical factory as a major pollution hotspot. Spatial analyses based on extended sampling have revealed the Siab and Dargom canals and Samarkand City as major pollution sources of elevated N-NO2 and COD, respectively. Trends at various gauging stations (MK-test) show increasing EC (τ = 0.72) and N-NH4 (τ = 0.46) levels, with decreasing TSS, N-NO3, T, and COD levels over time. Recommendations include targeted measures to reduce pollution at the Navoiazot factory and downstream, introducing sustainable agriculture practices, increasing public awareness for environmental conservation, and improving urban wastewater treatment to meet water quality requirements for different users.","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"52 8","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141867813","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

Performance evaluation of different machine learning algorithms for prediction of nitrate in groundwater in Thiruvannamalai District 用于预测 Thiruvannamalai 地区地下水中硝酸盐含量的不同机器学习算法的性能评估

IF 1.5 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2024-07-17 DOI: 10.1002/clen.202400060

Christina Jacob, Uma Shankar Masilamani

{"title":"Performance evaluation of different machine learning algorithms for prediction of nitrate in groundwater in Thiruvannamalai District","authors":"Christina Jacob, Uma Shankar Masilamani","doi":"10.1002/clen.202400060","DOIUrl":"10.1002/clen.202400060","url":null,"abstract":"The prevalence of nitrates (NO3−) in groundwater due to the extensive application of fertilizers and anthropogenic sources pollutes the groundwater. Machine learning (ML) techniques are now being increasingly deployed to achieve high precision in predicting water quality. This study assesses the efficacy of nine distinct ML algorithms, namely, linear regression, polynomial regression, decision tree, random forest (RF), support vector machine, multilayer perceptron regressor, eXtreme gradient boosting (XGB), light gradient boosting (LGB), and K-nearest neighbors to predict nitrate concentration in the groundwater in Thiruvannamalai District, Tamil Nadu. Overall, 360 water samples for 1 year and 14 groundwater variables were determined to predict nitrate. Performance evaluation metrics such as root mean square error (RMSE), moving average error (MAE), and correlation coefficient (R2) were evaluated for pre-monsoon, monsoon, and post-monsoon seasons. For all three seasons, RF predicted the nitrate concentration with low values of RMSE, MAE, and higher values of R2. The results show values for RF with: RSME: 0.49, MAE: 1.30, and R2: 0.94, which has a higher prediction tailed by LGB and XGB and is true for all the seasons. The results from the study will aid the policymakers in planning the strategy for remediation.","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"53 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141742135","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

Issue Information: Clean Soil Air Water. 7/2024 问题信息：清洁土壤、空气和水。7/2024

IF 1.5 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2024-07-14 DOI: 10.1002/clen.202470071

引用次数: 0

Nitrogen removal and microbial community variation in a shallow constructed wetland with Fe–C porous filter material as substrate 以Fe-C多孔过滤材料为基质的浅层人工湿地的脱氮效果和微生物群落变化

IF 1.5 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2024-07-04 DOI: 10.1002/clen.202300246

Shuyi Chu, Zhuangzhuang Cao, Zhongping Su, Jibo Xiao, Jun Li

{"title":"Nitrogen removal and microbial community variation in a shallow constructed wetland with Fe–C porous filter material as substrate","authors":"Shuyi Chu, Zhuangzhuang Cao, Zhongping Su, Jibo Xiao, Jun Li","doi":"10.1002/clen.202300246","DOIUrl":"10.1002/clen.202300246","url":null,"abstract":"This study aims to examine the nitrogen removal characteristics and microbial community variation at low hydraulic retention time (HRT) in a shallow constructed wetland (SCW) using iron–carbon (Fe–C) porous filter material (PFM) as substrate. Effects of influent nitrogen forms and chemical oxygen demand (COD)/N ratio on nitrogen removal performance at HRT of 1 day were investigated. Results showed that total nitrogen (TN) removal declined with the decrease of influent NH4+-N-to-NO3−-N ratio. When the influent NH4+-N/NO3−-N ratio was 0.1, TN removal decreased by 15.4% compared with that at ratio of 2.0. The increase of influent COD/N ratio enhanced NO3−-N reduction, and TN removal reached 74.5% at influent COD/N ratio 7.0. The microbial community was analyzed for the biofilm samples on Fe–C PFM at front (WF), middle (WM), and back (WB) of SCW. Proteobacteria, Bacteroidetes, Chloroflexi, and Firmicutes were dominant bacteria phyla. The relative abundance of genera involved in the nitrification and denitrification decreased with the influent flow. The iron autotrophic denitrifying and macromolecular organics degrading bacteria were abundant in the middle and back of SCW. Microbial nitrification and denitrification, plant uptake, and plant synergism contributed to 86.3%, 7.41%, and 19.9% of N removal, respectively. These results demonstrated that the SCW with Fe–C PFM as substrate was efficient in nitrogen removal at low HRT.","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"52 8","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141551643","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

Former landfills as environmental liabilities in central Chile: Evidence from a pilot study in Lepanto 智利中部作为环境负债的旧垃圾填埋场：来自莱潘托试点研究的证据

IF 1.5 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2024-07-01 DOI: 10.1002/clen.202400085

Jennifer Saa, María José Valdivia, Joaquín Ruiz, Carlos A. Manzano

{"title":"Former landfills as environmental liabilities in central Chile: Evidence from a pilot study in Lepanto","authors":"Jennifer Saa, María José Valdivia, Joaquín Ruiz, Carlos A. Manzano","doi":"10.1002/clen.202400085","DOIUrl":"10.1002/clen.202400085","url":null,"abstract":"The former Lepanto landfill in the Santiago Metropolitan Region in Central Chile ceased operations in 2002 after 24 years. Currently, a biogas recovery center operates on this site. The objective of this pilot study was to evaluate the atmospheric concentrations of two polycyclic aromatic hydrocarbons (PAHs, i.e., phenanthrene and fluoranthene) at three points downwind from the former Lepanto landfill using passive air samplers and polyurethane foam disks to provide 3-month average concentrations of contaminants during winter months. The results showed concentrations ranging between 2 and 65 ng m−3 and decreasing with distance from the former landfill. Given that the distance to other potential sources was similar in all sampling sites, the evidence found suggested that the former Lepanto landfill may contribute to the local PAH inventory. Thus, we suggest that former landfills are potential candidates for long-term monitoring as they can represent a less-known environmental liability for residents. Additionally, we provide insights on how the Chilean environmental protection system can establish reclamation steps for their management after closure.","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"52 8","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141506098","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