H2Open Journal最新文献_第4页

Phytoremediation of domestic sewage using a floating wetland and assessing the pollutant removal effectiveness of four terrestrial plant species 利用漂浮湿地对生活污水进行植物修复并评估四种陆地植物的污染物去除效果

IF 2.1

H2Open Journal Pub Date : 2023-04-12 DOI: 10.2166/h2oj.2023.032

Arivukkarasu D., S. R.

{"title":"Phytoremediation of domestic sewage using a floating wetland and assessing the pollutant removal effectiveness of four terrestrial plant species","authors":"Arivukkarasu D., S. R.","doi":"10.2166/h2oj.2023.032","DOIUrl":"https://doi.org/10.2166/h2oj.2023.032","url":null,"abstract":"\u0000 Several developing countries have limited infrastructure and finance to treat domestic and industrial wastewater. Discharging untreated sewage pollutes the surface and groundwater. Floating wetlands are an alternate method for treating polluted surface water bodies. This study's objective is to investigate the remediation of domestic wastewater using natural buoyant bamboo as a floating raft and terrestrial plants such as Ocimum tenuiflorum, Hibiscus, Chrysopogon zizanioides, and Canna in the floating wetland treatment (FWT) system. Floating rafts with a healthy terrestrial plant were planted and made to float in four plastic tanks with domestic wastewater. The water quality analysis was carried out periodically after 0, 3, 5, 10, 15, 20, and 25 days intervals. The experimental results of FWT using C. indica showed the highest removal efficiency of the pollutants such as TSS (96%), TP (98%), ammonia (95%), and DO (45%). In contrast, Ch. zizanioides showed its maximum removal efficiencies for turbidity (90%), TDS (48%), TN (85%), sodium (53%), potassium (74%), TP (92%), EC (27%), COD (93%), BOD (95%), and E. coli (47%). This study finding showed that the best terrestrial plants for removing various nutrients and other contaminants from municipal sewage were C. indica and Ch. zizanioides. However, further research is required to utilize these terrestrial plants with substrates under long-term study.","PeriodicalId":36060,"journal":{"name":"H2Open Journal","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48168469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Estimation of the economic value of irrigation water in canal and tube well command areas 渠管井指挥区灌溉用水经济价值估算

IF 2.1

H2Open Journal Pub Date : 2023-04-04 DOI: 10.2166/h2oj.2023.011

A. Upadhyaya, P. Jeet, A. K. Singh, P. K. Sundaram

引用次数: 0

Suitability of drinking water quality in Chittagong Metropolitan City, Bangladesh: a research on urban water bodies (UWBs) using multivariate analytic techniques 孟加拉国吉大港市饮用水水质适宜性：基于多元分析技术的城市水体研究

IF 2.1

H2Open Journal Pub Date : 2023-03-30 DOI: 10.2166/h2oj.2023.015

M. H. Molla, M. Chowdhury, M. Muhibbullah, Kazi Md. Barkat Ali, Md. Habibur Rahman Bhuiyan, Suman Das, A. Morshed, Jewel Das, S. Islam

{"title":"Suitability of drinking water quality in Chittagong Metropolitan City, Bangladesh: a research on urban water bodies (UWBs) using multivariate analytic techniques","authors":"M. H. Molla, M. Chowdhury, M. Muhibbullah, Kazi Md. Barkat Ali, Md. Habibur Rahman Bhuiyan, Suman Das, A. Morshed, Jewel Das, S. Islam","doi":"10.2166/h2oj.2023.015","DOIUrl":"https://doi.org/10.2166/h2oj.2023.015","url":null,"abstract":"\u0000 This is empirical research that focuses on the urban water ecosystems in the humid tropics of South Asia. The purpose of the study was to evaluate the quality of drinking water in the urban water bodies (UWBs) of Chittagong Metropolitan City (CMC), Bangladesh. The field data was centered on the analysis and depiction of twenty-three (23) water quality parameters, collected from twenty-one (21) spatial observation units. Analytic tools include suitability analysis, correlation matrix, principal component analysis (PCA), and cluster analysis (CA) as a means to an end. The data were analyzed using SPSS. The analysis reveals that drinking water quality in studied UWBs was inappropriate during the monsoon season. Parameters that crossed the extreme permissible concentration incorporate EC, BOD, COD, Turbidity, Nitrate, Total coliform, and Fecal coliform. The PCA extracted four factors (PC1–4) with an eigenvalue of 10.23, explaining 73.1% of the total variation in the dataset in cumulative terms. The CA recognized three (3) broad groups of the sampling stations. Group A represents nine cases, suffering the most from pollution concentration in CMC. Awareness building at all levels is advocated to improve clean water sources, increase service provision, and ensure public health safeguards.","PeriodicalId":36060,"journal":{"name":"H2Open Journal","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41799135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Water or sediment? Assessing seasonal microplastic accumulation from wastewater treatment works 水还是沉淀物?评估污水处理厂的季节性微塑料累积

IF 2.1

H2Open Journal Pub Date : 2023-03-27 DOI: 10.2166/h2oj.2023.017

T. Dalu, Nelisiwe Ngomane, F. Dondofema, Ross N. Cuthbert

{"title":"Water or sediment? Assessing seasonal microplastic accumulation from wastewater treatment works","authors":"T. Dalu, Nelisiwe Ngomane, F. Dondofema, Ross N. Cuthbert","doi":"10.2166/h2oj.2023.017","DOIUrl":"https://doi.org/10.2166/h2oj.2023.017","url":null,"abstract":"\u0000 Microplastics have become a major environmental concern around the world due to their potential impact on ecosystem functioning and biota. Microplastics enter freshwater systems through a variety of sources, with wastewater treatment work discharges being the most important source. The study aimed to determine the seasonal (i.e., hot–wet, cool–dry) variation in water and sediment microplastic abundances up- and down-stream of wastewater treatment works across two subtropical river systems (i.e., Crocodile and Luvuvhu) in South Africa. Overall, we found that microplastic type and distribution often did not show clear seasonal and site variation, hence microplastics were widespread across the studied systems and microplastic concentrations did not relate clearly to wastewater treatment works as further indicated by microplastic risk assessments which indicated high pollution loads upstream. The non-metric multidimensional scaling ordination based on microplastic densities for water and sediment discriminated slightly among systems, with major overlaps across the different locations and seasons. As a result, the current research indicates that seasonal context influences differences in microplastic concentrations, with the hot–wet season being associated with the high pollution loads, particularly within the sediments where this was more pronounced indicating the sink-source effect which is linked to sediments and not water.","PeriodicalId":36060,"journal":{"name":"H2Open Journal","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47948286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Estimation of nutrient fluxes from the flooding of the Wadi Gaza catchment into the Mediterranean Sea 估计加沙河流域洪水流入地中海的营养通量

IF 2.1

H2Open Journal Pub Date : 2023-03-24 DOI: 10.2166/h2oj.2023.053

Hassan Al-Najjar, A. Purnama, Korhan Özkan

引用次数: 0

Optimization of the geometry of double-chamber basin-type passive solar stills to maximize yield 优化双室盆式被动式太阳能蒸馏器的几何形状，使产量最大化

IF 2.1

H2Open Journal Pub Date : 2023-03-24 DOI: 10.2166/h2oj.2023.060

Kelvin Mutevu Mwanzia, S. Ondimu, P. Ajwang

{"title":"Optimization of the geometry of double-chamber basin-type passive solar stills to maximize yield","authors":"Kelvin Mutevu Mwanzia, S. Ondimu, P. Ajwang","doi":"10.2166/h2oj.2023.060","DOIUrl":"https://doi.org/10.2166/h2oj.2023.060","url":null,"abstract":"\u0000 Developing countries require simple low-technology methods to desalinate drinking water. Passive solar stills are an example of a simple low-technology innovation that can desalinate saline water for small populations. Compared to single-chamber solar stills, double-chamber solar stills have the potential of increasing the yield of solar stills due to an increased condensation surface area. An experiment was carried out to determine the optimal angle of double-chamber solar stills. The set-up comprised double-chamber solar stills with angles of 10°, 20°, 30° and 40°, with a control set-up of a 20° single-chamber solar still. The experiment was conducted in January 2022 at Juja in Kiambu County, Kenya. The double-chamber solar stills comprised an evaporation chamber and a condensation chamber. The dimensions of the chambers were 0.5 m × 0.5 m with a height of 0.25 m. The main assumptions were that there existed steady-state conditions and that the solar still was leakproof. The research found that the 40° double-chamber solar still had the highest yield of 3.756 l/m2/day and the 10° double-chamber solar still had the least yield of 1.644 l/m2/day. Comparing the 20° double-chamber still and the 20° single-chamber still (control), the double-chamber solar still had a higher external efficiency.","PeriodicalId":36060,"journal":{"name":"H2Open Journal","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45451386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Current trends in chemical hydrology of the Pavlovsky Reservoir on the Ufa River 乌法河巴甫洛夫斯基水库化学水文变化趋势

IF 2.1

H2Open Journal Pub Date : 2023-03-21 DOI: 10.2166/h2oj.2023.065

Ayrat Hafizov, Lilia Kamaletdinova, A. Khazipova, Alexander Komissarov, D. Kutliyarov

{"title":"Current trends in chemical hydrology of the Pavlovsky Reservoir on the Ufa River","authors":"Ayrat Hafizov, Lilia Kamaletdinova, A. Khazipova, Alexander Komissarov, D. Kutliyarov","doi":"10.2166/h2oj.2023.065","DOIUrl":"https://doi.org/10.2166/h2oj.2023.065","url":null,"abstract":"\u0000 The paper presents an analysis of long-term dynamics and current trends in the hydrochemistry of the Pavlovsky Reservoir by 10 chemical indicators at seven water intake points. The choice of 10 chemical elements was justified in previous studies mentioned in the paper. This approach allows using the observation data of the Bashkir FSBI (Federal State Budgetary Institution Bashkir Hydrometeorology and Environmental Monitoring Department), previous studies conducted in 1986–88 and in 2000 and the results of the present research (2018–2019) making it possible to track the dynamics of changes in the hydrochemical composition of water over 30 years (from 1986 to 2018). It was revealed that throughout the reservoir, from its beginning to the upper reaches, the content of Sr2+, Mn2+ and petroleum products in the water decreases; Zn2+, Hg2+, phenols and organic substances increase; Fe total (Fe2+ + Fe3+), P total are evenly distributed (according to PO43-), Cu2+. The study of the features of the long-term dynamics of the hydrochemical indicators of the Pavlovsky Reservoir allows for determining trends in the state of the ecosystem of the water body and proposes measures to preserve the operational properties of the reservoir.","PeriodicalId":36060,"journal":{"name":"H2Open Journal","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48902446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 electrocoagulation process for the removal of chloroquine from an aqueous solution 电凝聚法在去除水溶液中氯喹中的应用

IF 2.1

H2Open Journal Pub Date : 2023-03-17 DOI: 10.2166/h2oj.2023.016

Reda Elkacmi, R. Zahnoune, Radouane El Amri, O. Boudouch

{"title":"Application of electrocoagulation process for the removal of chloroquine from an aqueous solution","authors":"Reda Elkacmi, R. Zahnoune, Radouane El Amri, O. Boudouch","doi":"10.2166/h2oj.2023.016","DOIUrl":"https://doi.org/10.2166/h2oj.2023.016","url":null,"abstract":"\u0000 Using chloroquine (CQ) as a provisional treatment for COVID-19 patients generates more pharmaceutical waste, posing a potential environmental threat. The present study evaluates the feasibility of the electrocoagulation (EC) process in removing CQ from an aqueous solution. The experiment was performed in a laboratory-scale stirred tank reactor (STR). The effects of operating conditions were investigated. Equilibrium and kinetic experiments were also performed to describe CQ adsorption. The results showed that increasing both the applied current density and the EC reaction time increases the removal efficiency of CQ. The results showed that 95% of CQ removal efficiency was achieved at a current density of 66.89 mA/cm2, 600 rpm of agitation rate, 60 min of electrolysis time, an initial CQ concentration of 3 mg/L, and a pH of 6.5. For equilibrium and kinetic studies, the Langmuir isotherm and the pseudo-second-order provided the best fit to the experimental data. The optimal operating conditions led to a specific amount of dissolved aluminum electrodes and a specific energy consumption of 0.228 kg/m3 and 12.243 kWh/m3. These results suggest that the EC process is an excellent tool for effectively degrading CQ from wastewater with a low operating cost (2.48 USD/m3).","PeriodicalId":36060,"journal":{"name":"H2Open Journal","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44646755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Evaluation of land use/land cover datasets in hydrological modelling using the SWAT model 使用SWAT模型对水文建模中的土地利用/土地覆盖数据集进行评估

IF 2.1

H2Open Journal Pub Date : 2023-03-08 DOI: 10.2166/h2oj.2023.062

Sayed Amir Alawi, Sevinç Özkul

{"title":"Evaluation of land use/land cover datasets in hydrological modelling using the SWAT model","authors":"Sayed Amir Alawi, Sevinç Özkul","doi":"10.2166/h2oj.2023.062","DOIUrl":"https://doi.org/10.2166/h2oj.2023.062","url":null,"abstract":"\u0000 Land use/land cover (LULC) is a key influencer for runoff generation and the estimation of evapotranspiration in the hydrology of watersheds. Therefore, it is essential to use accurate and reliable LULC data in hydrological modelling. Ground-based data deficiencies are a big challenge in most parts of developing countries and remote areas around the globe. The main objective of this research was to evaluate the accuracy of LULC data from two different sources in hydrological modelling using the soil and water assessment tool (SWAT). The first LULC data was prepared by the classification of Landsat 8 satellite imagery, and the second LULC data was extracted from the ESRI 2020 global LULC dataset. The study was conducted on the Kokcha Watershed, a mountainous basin partly covered by permanent snow and glaciers. The accuracy assessment was done based on a comparison between observed river discharge and simulated river flow, utilizing each LULC dataset separately. After calibration and validation of the models, the acquired result was approximately similar and slightly (5.5%) different. However, due to the higher resolution and easily accessible ESRI 2020 dataset, it is recommended to use ESRI 2020 in hydrological modelling using the SWAT model.","PeriodicalId":36060,"journal":{"name":"H2Open Journal","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45915090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Occurrence of tire-derived microplastics (TMPs) focusing on driving behavior 关注驾驶行为的轮胎衍生微塑料（TMPs）的出现

IF 2.1

H2Open Journal Pub Date : 2023-02-20 DOI: 10.2166/h2oj.2023.058

Chisato Nishimagi, Masami Yanagihara, Yiming Fang, Hiroshi Sakai

{"title":"Occurrence of tire-derived microplastics (TMPs) focusing on driving behavior","authors":"Chisato Nishimagi, Masami Yanagihara, Yiming Fang, Hiroshi Sakai","doi":"10.2166/h2oj.2023.058","DOIUrl":"https://doi.org/10.2166/h2oj.2023.058","url":null,"abstract":"\u0000 Recently, microplastic (MP) contamination of the aquatic environment has been reported. Marine MP pollution (especially terrestrial-sourced MPs derived from vehicle tires) is considered a global problem because marine organisms may ingest toxic substances. In this study, we analyzed the generation and occurrence of tire-derived MPs (TMPs) that originate from tire dust on roadways and also focused on driving behavior. The results suggested that the number of TMPs increased in proportion to the increase in traffic volume within the range of 10,000–30,000 vehicles/day. The influence of driving behavior was explored by comparing the number of TMPs at distances of 30, 50 and 70 m from the stop line and by assuming a difference in braking behavior. Traffic video was recorded in conjunction with sampling and was analyzed in parallel with the TMPs. The results demonstrated that brakes were applied for an acceleration rate of over −10 m/s2 at distances of 60 and 80 m from the stop line, which resulted in an approximate increase of 28% in the number of TMPs at approximately 70 m. With these results, it can be concluded that the number of TMPs increases due to the traffic volume and braking behavior.","PeriodicalId":36060,"journal":{"name":"H2Open Journal","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47836237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0