Water Cycle最新文献

{"title":"Evaluation of ZnO infused CA/PCL nanocomposites using potential wastewater treatment and invitro anticancer activity","authors":"Palani Karthik,&nbsp;Siranjeevi Ravichandran,&nbsp;Natarajan Prakash,&nbsp;Azhagurajan Mukkannan,&nbsp;Jegathalaprathaban Rajesh","doi":"10.1016/j.watcyc.2024.03.002","DOIUrl":"https://doi.org/10.1016/j.watcyc.2024.03.002","url":null,"abstract":"<div><p>In this present study explores the multifunctional potential of ZnO@CA/PCL nanocomposites, delving into their efficacy in wastewater treatment and exhibiting promising in vitro anticancer activity. The prepared nanocomposites were characterized by Scanning SEM, TGA, XRD, UV–vis spectroscopy, X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). The results of an invitro anticancer activity showed the significant cytotoxic effect of ZnO nanoparticles on the ACHN renal cancer cell line. The photocatalytic activity of ZnO@CA/PCL nanocomposites were evaluated by monitoring the degradation of congo red (CR) and rhodamine-B (RhB) dyes under UV illumination. The degradation efficacy of the rhodamine-B (90%) was higher than that of the congo red dye (80%) after 60 min of irradiation under UV light.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"5 ","pages":"Pages 121-130"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666445324000102/pdfft?md5=0ee51fda68a47ea0f269cc8c6f749ae7&pid=1-s2.0-S2666445324000102-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140533452","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 feasible method for the composition analysis and chemical remediation of clogging matter in subsurface flow constructed wetlands","authors":"Yu Zheng ,&nbsp;Yuyang Song ,&nbsp;Rongshe Zhang ,&nbsp;Nan Zhang ,&nbsp;Mohomed Salah ,&nbsp;Siyi Cheng ,&nbsp;Yuanyuan Li ,&nbsp;Qian Wang ,&nbsp;Chenguang Li ,&nbsp;Fengmin Li","doi":"10.1016/j.watcyc.2024.03.003","DOIUrl":"10.1016/j.watcyc.2024.03.003","url":null,"abstract":"<div><p>The problem of clogging, especially biological clogging, makes the long-term operation of subsurface flow constructed wetlands challenging. This study focused on the two subsurface flow constructed wetlands receiving reclaimed water near the Tuhai River of Shandong Province, aiming to provide a feasible method for the composition analysis and chemical remediation by H₂O₂ solution of clogging matter. The compositions and distributions of clogging matter in these two wetlands were analyzed, and the effects of H₂O₂ solutions with different mass fractions on proteins, polysaccharides, nucleic acids, and humic acids in the organic clogging components were studied. The two case studies indicated that the contents of clogging matter in the two subsurface flow constructed wetlands varied greatly due to the operation time and operation mode, and the proportion of inorganic components was higher than that of organic components. The organic components of the clogging matter were mainly proteins and humic acids, with very small amounts of polysaccharides and nucleic acids. In addition, the H₂O₂ solution with a mass fraction of 10% had a good removal effect on proteins and humic acids in the wetland substrates, which also could increase the permeability coefficient of the substrates without causing a large negative impact on the temperature and pH value of the wetland systems. This article proposed a simple, economical, environmentally friendly method for analyzing and remediating biological clogging of subsurface flow constructed wetlands, which was expected to be widely used in situ remediation of clogging matter.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"5 ","pages":"Pages 131-136"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666445324000114/pdfft?md5=bf23dc8522c8d07ef2ca90df3981c69c&pid=1-s2.0-S2666445324000114-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140401709","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":"Resistance differences of representative model microorganisms in different disinfection processes: ZIF-67, UVC and ozone","authors":"Xiang Zheng ,&nbsp;Qingwen Yang ,&nbsp;Jincheng Xia ,&nbsp;Rong Cheng ,&nbsp;Haiyan Li ,&nbsp;Jianzhong Zheng","doi":"10.1016/j.watcyc.2024.06.004","DOIUrl":"10.1016/j.watcyc.2024.06.004","url":null,"abstract":"<div><p>Due to their inherent nature, each type of microorganism exhibits unique resistance to various disinfection processes. Disinfection with nanomaterials represents a promising technology that has garnered significant interest. Among them, ZIF material has antibacterial and antiviral activities, and ZIF-67 material is a new type of nanomaterial that can effectively kill bacteria and viruses, with the potential for large-scale use. Therefore, in this paper, we investigate the differences between nanomaterial disinfection techniques (employing ZIF-67) and traditional inactivation techniques (e.g., ultraviolet-C and ozone). Phage MS2 and PhiX174 and their respective host <em>E. coli</em> were chosen as the representative microorganisms. Our findings indicate that phages exhibit greater resistance to ZIF-67 and traditional disinfection techniques than bacteria, but different techniques show specific disinfection effects on the three disinfection microorganisms. Considering the differences, choosing appropriate disinfection techniques based on the characteristics of the disinfected substances in practical disinfection technology selection is essential.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"5 ","pages":"Pages 259-265"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666445324000230/pdfft?md5=b48c836232f862177d091469757c2114&pid=1-s2.0-S2666445324000230-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142233792","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":"Photocatalytic degradation of sulfamethoxazole over S-scheme Fe2O3/g-C3N4 photocatalyst under visible light","authors":"Jiaolong Zhang ,&nbsp;Shuting Gou ,&nbsp;Zhe Yang ,&nbsp;Chaolin Li ,&nbsp;Wenhui Wang","doi":"10.1016/j.watcyc.2023.11.001","DOIUrl":"10.1016/j.watcyc.2023.11.001","url":null,"abstract":"<div><p>The application of promising g-C₃N₄ has been limited by poor photogenerated electron-hole separation and limited absorption for visible light. Sulfamethoxazole (SMX) is a typical antibiotic drug that is used worldwide and hard to be disposed through conventional wastewater treatment methods. Herein, S-scheme Fe₂O₃/g-C₃N₄ heterojunction was successfully prepared via a facile one-step sintering method and applied to photodegrade SMX under visible light irradiation. The integration of Fe₂O₃ and g-C₃N₄ shows superior charge separation and light absorption ability. As a result, the removal efficiency of 11 wt% Fe₂O₃/g-C₃N₄ reaches to 99.2% within 30 min, which is visibly higher than 59.5% of pure g-C₃N₄. ·O₂⁻ and ·OH are demonstrated to be the predominant active species for SMX photodegradation, and the possible degradation pathway is also proposed based on electronic band structure of Fe₂O₃/g-C₃N₄ heterojunction. This study presents a facile construction of g-C₃N₄ based S-scheme photocatalyst and offers an environmentally friendly approach to effectively remove organic pollutants using renewable solar energy.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"5 ","pages":"Pages 1-8"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666445323000260/pdfft?md5=6844aea4d483cee621c57468c92a747a&pid=1-s2.0-S2666445323000260-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138619409","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 exposure dose of reclaimed water in daily life: A mini review","authors":"Liu He ,&nbsp;De-Xiu Wu ,&nbsp;Xin-Yang Zhang ,&nbsp;Lu Peng","doi":"10.1016/j.watcyc.2023.05.003","DOIUrl":"10.1016/j.watcyc.2023.05.003","url":null,"abstract":"<div><p>The exposure dose of reclaimed water is an important indicator to evaluate the potential risk of water reuse. This study summarized a general calculation model for the exposure dose of reclaimed water, taking into account the three exposure routes of oral intake, skin absorption and inhalation. The differences of reused scenarios, geographical and meteorological conditions, and evaluated populations were considered in the model. The exposure of reclaimed water in practical application was also studied. The daily intakes of reclaimed water of different populations could vary from 0.01 to 49 ​mL. The average annual exposure dose of reclaimed water in the regular reused scenarios was 2444 ​mL. Professional activities (mean was 42.63 ​L and median was 9.81 ​L) had a higher annual exposure dose than non-professional activities (mean was 7.91 ​L and median was 0.90 ​L). Annual exposure doses to road dust reduction, garden greening, road rinse and manual car washing were higher than the average for the professionals. Future research can focus on the exposure risk of reclaimed water of the above activities.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"4 ","pages":"Pages 120-126"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44083891","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}

{"title":"Evaluation of pre-magnetization on the dewaterability of waste activated sludge treated by ozonation","authors":"Jianxin Zhang ,&nbsp;Chang Chen ,&nbsp;Ning Ding","doi":"10.1016/j.watcyc.2023.02.001","DOIUrl":"10.1016/j.watcyc.2023.02.001","url":null,"abstract":"<div><p>The dewaterability of waste activated sludge (WAS) plays the key role in sludge dewatering in wastewater treatment plants. The magnetic field as a source of clean energy has been reported to be able to cause changes in sludge properties and to enhance sludge dewatering by chemical treatment. This paper focuses on the effect of pre-magnetization on the sludge dewatering performance by ozonation. The results showed that ozonation reduced the capillary suction time (CST) and water content of sludge cake (W_sc) of WAS. The CST reduced from 21.5 ​s to 12.7 ​s; and the W_sc reduced from 85.6% to 85%. However, the addition of pre-magnetization with a magnetic field did not make much improvement of the dewaterability. Further investigation on sludge properties such as EPS, TOC, particle size, and the SEM images of the treated WAS showed that the pre-magnetization prior to ozonation led to stronger oxidation and WAS particle broken, which was proofed not necessarily correlated to sludge dewaterability enhancement.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"4 ","pages":"Pages 41-46"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42019499","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}

{"title":"Environmental data and facts in the semiconductor manufacturing industry: An unexpected high water and energy consumption situation","authors":"Qi Wang ,&nbsp;Nan Huang ,&nbsp;Zhuo Chen ,&nbsp;Xiaowen Chen ,&nbsp;Hanying Cai ,&nbsp;Yunpeng Wu","doi":"10.1016/j.watcyc.2023.01.004","DOIUrl":"10.1016/j.watcyc.2023.01.004","url":null,"abstract":"<div><p>With the expansion of the semiconductor industry, determining the huge associated water and energy consumption and accomplishing sustainable development can be key issues for this industry. This study surveyed the sustainability reports of 28 semiconductor corporations and summarized their environmental stewardship information. Overall, the total water withdrawal in 2021 was 7.89 ​× ​10⁸ ​m³, total energy consumption was 1.49 ​× ​10¹¹ ​kWh, and total greenhouse gas (GHG) emissions were 7.15 ​× ​10⁷ tons CO₂ equivalent. The total Scope 1 and Scope 2 GHG emissions were 2.74 and 4.41 ​× ​10⁷ ​t CO₂ equivalent, respectively. Surface water intake, municipal water supply, groundwater withdrawal, third party supply, and external reclaimed water intake accounted for 47.0%, 35.3%, 8.5%, 5.8%, and 3.2% of total water use, respectively. Electricity, fossil fuel, renewable energy, and others accounted for 83.7%, 12.0%, 2.7%, and 1.7% of the total energy use. In 2021, average water use, energy consumption, and GHG emissions were calculated to be 8.22 ​L/cm², 1.15 ​kWh/cm², and 0.84 ​kg CO₂ equivalent/cm², respectively, based on announced data. Ultrapure water consumption was predicted to be 5.51 and 0.95 ​× ​10⁸ ​m³ worldwide and for China, respectively. Effective sustainability strategies are supposed to be implemented to meet the considerable growth in water and energy consumption and GHG emissions for the semiconductor industry worldwide and in China.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"4 ","pages":"Pages 47-54"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45933681","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}

{"title":"Roles of magnetic coagulation in black-odor water restoration: An insight into dissolved organic matters","authors":"Libing Zheng ,&nbsp;Heqing Zhang ,&nbsp;Chenlu Li ,&nbsp;Zhenjun Wu ,&nbsp;Jinqi Yu ,&nbsp;Hui Xu ,&nbsp;Meixue Chen ,&nbsp;Yuansong Wei","doi":"10.1016/j.watcyc.2022.11.002","DOIUrl":"10.1016/j.watcyc.2022.11.002","url":null,"abstract":"<div><p>The black-odor water body restoration is an unfinished business in protecting and maintaining the ecological functions of natural water systems in China. Magnetic coagulation (MC) had found a vast application prospect for its high-efficient separation. In this work, the performance of MC was analyzed to explore its role in natural water protection, with a focus on identification and removal mechanisms of the dissolved organic matters (DOM) by absorption and fluorescence spectroscopy in terms of the spectroscopic indices, two-dimensional correlation spectroscopy (2D-COS), and parallel factor analysis (PARAFAC) methods. MC presented an excellent performance for suspended and colloidal matters, phosphorus, and DOMs, and showed high adaptability in pollution interception and water restoration. Tryptophan-like, tyrosine-like, and humics were identified as the key components in the wastewater, which were mainly recently produced or microbial-derived. The targeted pollutants were DOMs with high molecular weight, hydrophobicity, polarity, and aromaticity for the high affinity with the hydrolyzed Al species. Polyaluminum chloride (PAC) was the key in dissolved pollutants removal, while the mix stage is crucial for DOMs with low MW or humic-like substances as PAM facilitated the flocs formation and the absorption process. However, the residual PAM and the redissolved DOMs from the recycled magnetic seeds also act as the DOM source. This work identified the DOM composition and removal mechanism in MC, which would promote its application in natural water protection.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"4 ","pages":"Pages 1-11"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47901876","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}

{"title":"Adsorption and photocatalytic degradation of 2-chlorophenol in water: Evaluating the performance of TiO2/activated carbon vs. using a mixture of TiO2 and activated carbon","authors":"Nabil N. Al-Hashimi ,&nbsp;Stephen J. Coupe ,&nbsp;Amjad H. El-Sheikh ,&nbsp;Alan P. Newman","doi":"10.1016/j.watcyc.2023.10.001","DOIUrl":"10.1016/j.watcyc.2023.10.001","url":null,"abstract":"<div><p>The work reported here compared between two photocatalytic degradation strategies of 2-chlorophenol (2-CP). The <strong>first strategy</strong> utilized titanium dioxide (TiO₂) immobilized on activated carbons (AC) to produce TiO₂/AC photocatalysts of various TiO₂ loadings. Various immobilization techniques were used: chemical vapour deposition (CVD), direct air hydrolysis (DAH), high-temperature impregnation (HTI). In <strong>the first strategy</strong>, characterization, adsorption and photocatalytic degradation of 2-CP using TiO₂/AC revealed that: 1) deposition of anatase TiO₂ occurred in the micro pores of AC; 2) adsorption capacity decreased with increasing anatase TiO₂ loading on TiO₂/AC; 3) adsorption kinetics followed pseudo first order kinetics where 40 % of 2-CP was adsorbed; 4) photocatalytic degradation caused removal of all 2-CP and 80 % of total organic carbon (TOC), while no chloride ion (Cl⁻) was produced. In the <strong>second strategy</strong>, naked TiO₂ (anatase) and mixtures of (anatase and AC) were involved to investigate the effect of presence of AC on degradation ability of anatase TiO₂ towards 2-CP. The results showed that: 1) naked TiO₂ (anatase) caused better degradation of 2-CP than TiO₂/AC (Cl⁻ was liberated; complete degradation of 2-CP occurred; some TOC remained in the suspension); 2) presence of AC with anatase TiO₂ in the reaction mixture negatively affected Cl⁻ production, but positively affected 2-CP and TOC disappearance; 3) when all 2-CP was adsorbed on AC, production of Cl⁻ was inhibited but continued at a reduced rate. This might indicat that both dissolved and adsorbed 2-CP contributed to the degradation process.</p></div>","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"4 ","pages":"Pages 192-206"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666445323000235/pdfft?md5=c6d4469cabdc92b49d73707c2e63ecc7&pid=1-s2.0-S2666445323000235-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135058427","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 comparison of three water discharge forecasting models for monsoon climate region: A case study in cimanuk-jatigede watershed Indonesia","authors":"Merri Jayanti ,&nbsp;Arwin Sabar ,&nbsp;Herto Dwi Ariesyady ,&nbsp;Mariana Marselina ,&nbsp;Muammar Qadafi","doi":"10.1016/j.watcyc.2023.01.002","DOIUrl":"https://doi.org/10.1016/j.watcyc.2023.01.002","url":null,"abstract":"","PeriodicalId":34143,"journal":{"name":"Water Cycle","volume":"4 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49752185","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}