Water Cycle最新文献

{"title":"Assessment of groundwater quality for irrigation purposes in ilesha West local government, Osun State, Nigeria","authors":"Olusola O. Fadipe ,&nbsp;Abiola U. Adebanjo ,&nbsp;Mubarak O. Thanni ,&nbsp;Oluwole A. Olawuyi","doi":"10.1016/j.watcyc.2022.10.001","DOIUrl":"10.1016/j.watcyc.2022.10.001","url":null,"abstract":"<div><p>This study assessed the suitability of different groundwater resources in a basement complex of Ilesha West Local Govt. Area (LGA) for irrigation purposes. A total of 207 water samples were collected from hand-dug wells, boreholes and springs during the peak periods of wet and dry seasons. The physicochemical characteristics (pH, total dissolved solids (TDS), electrical conductivity (EC), Alkalinity, Hardness), basic cations, anions (Ca²⁺, Mg²⁺, Na⁺, K⁺, HCO₃⁻, SO₄²⁻, Cl⁻, NO₃⁻) and heavy metals (Pb²⁺, Cr²⁺, Fe²⁺ and As⁵⁺) present were determined. The results were subjected to irrigation quality models such as sodium adsorption ratio (SAR), Kelly ratio (KR), sodium hazard (SH), permeability index (PI) and magnesium hazard (MH). To reveal the hydro-geochemical facies of the groundwater, Piper and Durov diagrams were plotted using the geochemist workbench sheet (GWB) software. A maximum SAR value of 6.0197 was recorded in the hand-dug wells during the dry season and the mean concentration of Cr²⁺ was observed to be higher than the recommended limits for irrigation. The percentage suitability of the water sources for irrigation purposes are 76%, 94%, 46% and 96% for SH, PS, KR, and MH models, respectively. Piper and Durov's diagrams revealed Na⁺+ K⁺ (80%), Ca⁺ (90%) and HCO₃⁻ ​+ ​CO₃⁻, Cl⁻. as the dominant cations, and anions respectively. Additional Hydro-geochemical plots revealed intermixing of the cations and anions, suggesting the dissolution of carbonate and silicate minerals from the parent soil or rock. Generally, the groundwater in the study area is suitable for irrigation, but the sustainability based on quantity should be investigated.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"3 ","pages":"Pages 160-170"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666445322000204/pdfft?md5=8fe08d65c13d2d4bc565c8b0814caa86&pid=1-s2.0-S2666445322000204-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49386456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Treatment of surfactants with concentrations below critical micelle concentration by ultrafiltration: A mini-review","authors":"Xue Zhang,&nbsp;Fuzhi Li,&nbsp;Xuan Zhao","doi":"10.1016/j.watcyc.2022.04.002","DOIUrl":"10.1016/j.watcyc.2022.04.002","url":null,"abstract":"<div><p>Surfactants are widely distributed in wastewater at concentrations below the critical micelle concentration (CMC). Generally, surfactant monomers are smaller than the pore sizes of ultrafiltration (UF) membranes, meaning that they can not be effectively rejected through sieving. However, it has been reported that surfactants with low concentrations play a non-negligible role during the UF process. UF performance is highly dependent on the interactions (e.g. electrostatic and hydrophobic) between surfactants and membrane and/or other pollutants. Given this, this review focuses on the treatment of surfactants with concentrations below the CMC values by UF processes. The effects of several variables including membrane properties, operation parameters, surfactant type, and feed concentration on the retention coefficient and membrane fouling are summarized. Finally, the potential fouling mechanisms and fouling control methods are discussed.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"3 ","pages":"Pages 50-55"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266644532200006X/pdfft?md5=49ba5bc89df4764b8fa801d4b1b93921&pid=1-s2.0-S266644532200006X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44736970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A combined electrodialysis and coal dust suppression system for acid mine drainage treatment and high mechanical hydrogel dust suppressant generation","authors":"Wenhao Liu ,&nbsp;Yanyun Zhao ,&nbsp;Xiangming Hu ,&nbsp;Xiao Li ,&nbsp;Ming Zhang ,&nbsp;Zhi Geng ,&nbsp;Qingshan Wang ,&nbsp;Weimin Cheng ,&nbsp;Yue Dong","doi":"10.1016/j.watcyc.2022.09.001","DOIUrl":"https://doi.org/10.1016/j.watcyc.2022.09.001","url":null,"abstract":"<div><p>The acid mine drainage (AMD) and coal dust from coal mining cause erosion to the ecological environment. Herein, a combined electrodialysis (ED) and coal dust suppression system is developed to realize AMD resource utilization and coal dust suppression. In the ED, &gt;97% removal rate of Fe³⁺, Zn²⁺, Cu²⁺, and Ni²⁺ were obtained. Metal ions coordination among acrylic acid (AA), ammonium persulfate (APS), and concentrated AMD have been utilized to prepare an interpenetrating network hydrogel dust suppressant (ED-AMD-PAA). Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) demonstrated that metal ions of concentrated AMD coordination in polyacrylic acid (PAA) based hydrogels. The mass of ED-AMD-PAA remains relatively stable at 175 ​°C by thermogravimetric analysis. The compressive strength of the solidified coal dust by mixed ED-AMD-PAA dust suppressant reached 247.44 ​± ​34.45 ​KPa, the mass loss of coal dust consolidation was only 0.05 ​± ​0.02 ​g after the wind resistance test, and ED-AMD-PAA still preserved about 2.4 ​± ​0.17% moisture after 48 ​h. The degradation rate of ED-AMD-PAA dust suppressant in the soil reached 37.4 ​± ​1.43% on the 10^th cycle. Those results will help the engineering application of PAA in coal dust suppression and AMD resource utilization.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"3 ","pages":"Pages 126-132"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666445322000162/pdfft?md5=acdfbb1c2e16586e915353c4489b8cad&pid=1-s2.0-S2666445322000162-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92091226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantifying sensitivity of groundwater recharge to land use and land cover changes by improving model performance on the wetland dominated Tikur Wuha Watershed, Ethiopia","authors":"Tesfalem Abraham ,&nbsp;Alemayehu Muluneh ,&nbsp;Rediet Girma ,&nbsp;Andreas Hartmann ,&nbsp;Sirak Tekleab","doi":"10.1016/j.watcyc.2022.08.002","DOIUrl":"10.1016/j.watcyc.2022.08.002","url":null,"abstract":"<div><p>Quantifying the spatial variability of groundwater recharge is crucial for water resource management under changing land use conditions. Hydrological model performance is highly influenced particularly for peak discharge simulation for the wetland-dominated watersheds. This study aimed at improving the performance of a numerical model at a wetland-dominated watershed by explicitly accounting for wetland processes. The Soil and Water Assessment Tool (SWAT) was used to simulate the spatial variability of groundwater recharge for the two Land Use and Land Cover (LULC) maps classified in 1996 and 2017. An acceptable model performance during the calibration and validation periods is found by incorporating wetland parameters. The trend of LULC change showed a significant reduction for Wetland and Forest going along with an increase of agricultural land at the rate of 9.56 ​km²/yr. Accounting for the LULC changes in the model, the simulated median groundwater recharge to the aquifer has reduced from 506.25 ​mm to 483.34 ​mm per year. During these periods, the extent of Wetland extremely converted towards Grassland, resulting in a reduction of median groundwater recharge from 508.6 ​mm to 495.3 ​mm per year in wetland-dominated sub-watersheds. In addition, this study demonstrates spatial variability in groundwater recharge with differences in catchment properties such as elevation and slope. Therefore, this study provides spatially quantified values for groundwater recharge under the LULC conditions, which are useful in the management and development of groundwater recharge regions.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"3 ","pages":"Pages 112-125"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666445322000150/pdfft?md5=7574a7f8ae354c34e2e774d04a401770&pid=1-s2.0-S2666445322000150-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44183407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Disinfection kinetics of peracetic acid inactivation of pathogenic bacteria in water","authors":"Sijia Zhang,&nbsp;Lin Jiang,&nbsp;Hang Li,&nbsp;Jiani Zhang,&nbsp;Teng Sun,&nbsp;Yiran Dong,&nbsp;Ning Ding","doi":"10.1016/j.watcyc.2022.05.002","DOIUrl":"10.1016/j.watcyc.2022.05.002","url":null,"abstract":"<div><p>Peracetic acid (PAA) has broad application in disinfection, since it produces fewer disinfection by-products. In this study, PAA was used as a disinfectant to inactivate <em>Escherichia coli</em>, <em>Staphylococcus aureus</em>, and <em>Bacillus subtilis</em> under different pHs and turbidity. The effects of different environmental factors on PAA disinfection were compared. The results were fitted by the common disinfection kinetic models, and the CTs were finally calculated according to the disinfectant decay models and the optimal disinfection kinetic models. By comparing PAA with other common disinfectants, the projected application of PAA was discussed.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"3 ","pages":"Pages 79-85"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666445322000101/pdfft?md5=07f158cf7df645d665f70dd1247b2afb&pid=1-s2.0-S2666445322000101-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43920307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improvement of organic acid production with sulfate addition during syngas fermentation using mixed cultures","authors":"Yinbo Xiang ,&nbsp;Haiping Luo ,&nbsp;Guangli Liu ,&nbsp;Renduo Zhang","doi":"10.1016/j.watcyc.2022.02.001","DOIUrl":"10.1016/j.watcyc.2022.02.001","url":null,"abstract":"<div><p>The aim of this study is to investigate the effect of sulfate on conversion of CO₂ into organics using syngas fermentation with mixed culture. Fermentation tests were operated under H₂ concentrations of 2.14 and 21.4 ​mmol/d, respectively, using substrates contained different initial concentrations of sulfate (i.e. 0, 2, 4, 6, 8, 10, and 12 ​mM). The addition of sulfate improved the acetate and formate production, and the enhancement was positively correlated with the sulfate concentrations from 2 to 8 ​mM. With 8 ​mM sulfate, the maximum acetate concentrations reached 75.4 ​± ​4.51 and 76.1 ​± ​7.77 ​mM under H₂ concentrations of 2.14 and 21.4 ​mmol/d, respectively, which were 1.47 and 2.58 times higher than those of the treatment without sulfate. The biomass achieved with the sulfate addition was 52%–97% higher than that without sulfate. High-throughput pyrosequencing showed that with the presence of sulfate, <em>Acetobacterium</em> and <em>Desulfovibrio</em> were dominant in the microbial community with high relative abundance of 43% and 38%, respectively. This study suggested that the performance of syngas fermentation could be improved with co-metabolism between homoacetogen and sulfate-reducing bacteria.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"3 ","pages":"Pages 26-34"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666445322000034/pdfft?md5=6fe47de27ed37135e9d9af1711a2e755&pid=1-s2.0-S2666445322000034-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46199938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nitrogen removal and microbial community characteristics of CANON process enhanced by static magnetic field at ambient temperature","authors":"Qian Wang ,&nbsp;Xi Chen ,&nbsp;Yunfan Chen,&nbsp;Weihua Yang,&nbsp;Shuang Zhao,&nbsp;Wenlin Jia","doi":"10.1016/j.watcyc.2021.11.001","DOIUrl":"10.1016/j.watcyc.2021.11.001","url":null,"abstract":"<div><p>In this study, a completely autotrophic nitrogen-removal over nitrite (CANON) process was started in a membrane bioreactor at ambient temperature, to which a static magnetic field (SMF) at a 20 ​mT intensity was applied to evaluate the enhancement of the CANON process by SMF. The results indicated that the SMF was capable of enhancing the nitrogen removal rate and shortening the start-up period of the CANON process. After running for about 8 months, the average nitrogen removal rate of the CANON process with SMF exposure was 324.8 ​± ​64.8 gN/m³/d, which was 30.4% higher than that of the control. Moreover, the SMF has the potential to protect the CANON process from being inhibited by low temperatures. Importantly, the SMF induced the synthesis and secretion of the extracellular polymeric substance (EPS) of the activated sludge and simultaneously reduced the zeta potential. This was conducive to the aggregation of the sludge material and the formation of an oxygen gradient in the sludge flocs, which promoted the coexistence of ammonium-oxidizing bacteria (AOB) and anaerobic ammonium-oxidizing bacteria (AnAOB). The high-throughput 16S rRNA gene sequence analysis confirmed that the abundances of the <em>Nitrosomonas</em> and <em>Candidatus Brocadia</em> genera, respectively the main AOB and AnAOB, were enhanced by SMF exposure.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"2 ","pages":"Pages 64-70"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666445321000064/pdfft?md5=44d63799951175361a374f17b407ff73&pid=1-s2.0-S2666445321000064-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44614872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Membrane technology for rainwater treatment and reuse: A mini review","authors":"Xiao Liu ,&nbsp;Zixiao Ren ,&nbsp;Huu Hao Ngo ,&nbsp;Xu He ,&nbsp;Peter Desmond ,&nbsp;An Ding","doi":"10.1016/j.watcyc.2021.08.001","DOIUrl":"10.1016/j.watcyc.2021.08.001","url":null,"abstract":"<div><p>Because of the current situation of global water shortage, finding strategies that can effectively guarantee water safety and sustainable use has become an urgent problem that needs to be solved at present. Rainwater is a type of clean energy and the method of the treatment and reuse of rainwater has become a pivotal problem that is worthy of consideration. Membrane technology has become the preferred method in the field of wastewater treatment due to its small footprint, good treatment effect, and low cost, and has also received increasing attention in rainwater treatment field. This review aims to retrospect the existing research technology of rainwater treatment with membrane technology and seek out the most critical research gaps to meet future research needs and technological exploration. The characteristics of different types of membrane technologies in rainwater treatment were summarized, the water quality after treatment and the feasibility in practical applications was analyzed. Membrane fouling has been identified as the main challenge. Nowadays, the research on membrane surface modification and membrane process optimization is gradually deepening, and the exploration and synthesis of new membrane materials and the process of treating rainwater with various technology combinations are still under research. The future application prospects are worth looking forward to.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"2 ","pages":"Pages 51-63"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.watcyc.2021.08.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"55192795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The virus removal in UV irradiation, ozonation and chlorination","authors":"Jiayang Kong,&nbsp;Yun Lu,&nbsp;Yunru Ren,&nbsp;Zhuo Chen,&nbsp;Menghao Chen","doi":"10.1016/j.watcyc.2021.05.001","DOIUrl":"10.1016/j.watcyc.2021.05.001","url":null,"abstract":"<div><p>The COVID-19 pandemic draws much attention to virus inactivation since the SARS-CoV-2 was detected in miscellaneous environments and the wastewater can be a potential transmitting pathway. UV irradiation, ozonation and chlorination are widely used disinfection processes in water treatment. In this review, the mechanisms and applications of three disinfection processes are introduced, and their inactivation effects on virus as well as other microorganisms are compared and discussed. The resistance of viruses to UV irradiation is generally stronger than that of bacteria. 4-log inactivation of bacteria can be easily obtained within a UV dose of 10 ​mJ/cm². However, the doses to reach the same virus removal rate vary greatly from 10 to 140 ​mJ/cm². The coronaviruses have even stronger UV resistance. Comparatively, ozonation and chlorination are effective methods to inactivate viruses, and the CT values of 4-log removal for most viruses concerned are lower than 1 ​mg·min/L and 10 ​mg·min/L, respectively. Protozoa, fungal spores and bacterial spores are more resistant to disinfection. Temperature, pH, organic matters, turbidity and other parameters all have influences on the disinfection. With a 10 ​°C decrease in temperature, the CT value required for certain removal rates doubles. Generally low pH promotes disinfection and high pH is against it. In drinking water and wastewater treatment process, the resistance properties of microorganisms and other influence parameters should be taken into consideration when choosing disinfection technologies.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"2 ","pages":"Pages 23-31"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.watcyc.2021.05.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47261694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Marine biodegradability review of plastics","authors":"Tony Van Rossum","doi":"10.1016/j.watcyc.2021.06.001","DOIUrl":"10.1016/j.watcyc.2021.06.001","url":null,"abstract":"<div><p>Current test methods for estimating biodegradability and duration in the oceans, do not consider nitrogen as a limiting factor for bacterial growth and plastic biodegradation. Algae and cyanobacteria can thrive within widely ranging Nitrogen/Phosphorous ratios from 5:1 to 100:1 The ocean's biodiversity that we know could die off if algae and cyanobacteria out compete existing dominant bacteria. Normally organic loading would be localized, but the slow degradation of microplastics allows the circulation across all the oceans. Single use plastics, such as wipes are having an increasing impact due to significant growth of demand and particularly with sanitation concerns with COVID-19. Biodegradability of plastics needs to be reassessed and the use of actual ocean conditions is needed. Verifying claims of biodegradability need to be reassessed since these are based on methods that have not considered nitrogen limitations in the ocean.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"2 ","pages":"Pages 38-43"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.watcyc.2021.06.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"55192772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}