Cleaner Water最新文献

{"title":"Recent advancements in utilizing plant-based approaches for water and wastewater treatment technologies","authors":"Jatin Kumar ,&nbsp;Megha Choudhary ,&nbsp;Pritam Kumar Dikshit ,&nbsp;Sanjay Kumar","doi":"10.1016/j.clwat.2024.100030","DOIUrl":"10.1016/j.clwat.2024.100030","url":null,"abstract":"<div><p>Overpopulation, expansion of agricultural practices, misuse of water resources, industrialization, and urbanization are among the major factors that have a big impact on the quantity and quality of water. It has been projected that around 4 billion humans would lack access to pure water by 2025. Thus, for a sustainable lifestyle, it is imperative to improve water quality. Conventional water and wastewater treatment technologies involve various chemical processes such as coagulation and disinfection and physical methods such as filtration and adsorption. For these processes, various chemicals are being used such as alum and lime in coagulation, chlorine and bromine in disinfection, and activated alumina, silica gel and zeolites in adsorption. However, such chemicals have high procurement cost and display negative impacts on environment and human health, due to which plant based coagulants, adsorbents, and disinfectants are now being majorly tested for water and wastewater treatment methods. The objective of this review article is to provide a recent update on plant derived coagulants, adsorbents, and disinfectants for the treatment of water and wastewater. This review article critically examines the various conventional plant based water cleaning methods and discusses their mechanisms. Prior to this study, plant-based coagulants, adsorbents, and disinfectants have been mainly separately reviewed, but a proper combined study is lacking. The present manuscript highlights the procedure of water and wastewater treatment plants first and then discusses all the three plant based water treatment methods sequentially. This study may be useful for the development of an efficient water and wastewater treatment method employing plant based coagulants, adsorbents, and disinfectants. The present study will also be beneficial for the researchers who are actively working on plant derived water cleaning methods.</p></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"2 ","pages":"Article 100030"},"PeriodicalIF":0.0,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2950263224000280/pdfft?md5=c794d1d15b8a3a9941fced8424094e3b&pid=1-s2.0-S2950263224000280-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141993271","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 application of transfer machine learning to predict and impute missing sulphate levels in different Acid Mine Drainage treatment plants","authors":"Taskeen Hasrod ,&nbsp;Yannick B. Nuapia ,&nbsp;Hlanganani Tutu","doi":"10.1016/j.clwat.2024.100029","DOIUrl":"10.1016/j.clwat.2024.100029","url":null,"abstract":"<div><p>An accurately pre-trained stacking ensemble machine learning regressor was used to predict sulphate levels in two other Acid Mine Drainage (AMD) treatment plants using Transfer Learning (TL). The model was trained on the large Central Rand (CR) water quality dataset and was used to predict and impute the sulphate levels in the scanty East Rand (ER) and West Rand (W<em>R</em>) datasets which would not have been sufficient to train ML models from scratch. TL was successfully used to overcome this barrier and rapidly predicted sulphate levels in the East Rand and West Rand plants using the pre-trained model and achieved a high level of accuracy (Mean Squared Error:0.00124, Mean Absolute Error:0.0290 and R²:0.963) for the East Rand plant when comparing the predicted and true sulphate values. No true sulphate values existed for the West Rand plant; however, TL was successful in imputing these missing values and rapidly completed the West Rand dataset by providing the historic sulphate levels. This was possible due to the high degree of similarity between all domains (treatment plants) since they had similar geographic locations, the same treatment process, possessed the same important features and had the same relationships between variables. TL was successful in providing three accurate datasets for AMD sulphate levels, an important accomplishment towards having reliable data for use in design of experiments aimed at recovering valuable resources such as elemental sulphur, gypsum and important metals from AMD.</p></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"2 ","pages":"Article 100029"},"PeriodicalIF":0.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2950263224000279/pdfft?md5=c39a7a24f8f6b6b582c4de57512044b8&pid=1-s2.0-S2950263224000279-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141953136","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":"LCMS and FTIR profiling of microalga Chlorella sp. for cosmetics and skin care applications","authors":"Yamuna Ganeson ,&nbsp;Primilla Paramasivam ,&nbsp;Karthick Murugan Palanisamy ,&nbsp;Natanamurugaraj Govindan ,&nbsp;Gaanty Pragas Maniam","doi":"10.1016/j.clwat.2024.100028","DOIUrl":"10.1016/j.clwat.2024.100028","url":null,"abstract":"<div><p>People are exposed to extreme levels of UV radiation from the sun which gives a harmful effect on the skin. A prevention step should be taken such as applying a protective layer that able to protect the skin from UV rays. Hence, the protective layer should contain the antioxidant components that are able to prevent the formation of free radicals. Microalgae and the bioactive components that can be derived from them are thought to be viable raw material replacements in the cosmetics and pharmaceutical industries. In this study, carotenoid compounds with antioxidant characteristics such as neoxanthin and cryptoxanthin were successfully identified in <em>Chlorella</em> sp. by LC‑QTOF and the compounds have been reported to give a shield from skin aging. Meanwhile, the phenolic compounds were successfully identified through LC‑QTOF in <em>Chlorella</em> sp. that also been reported to be an active compound in sunscreen products. Besides, the identification of polysaccharide compounds was done by FTIR analysis, and the presence of the functional group was successfully identified. Polysaccharides have been reported to be an excellent anti-wrinkles characteristic. The alginate compound was analyses from the identification of a functional group based on the peaks formed. The alginate compound has been an excellent free radical scavenging. Therefore, <em>Chlorella</em> sp. can be applicable for cosmetics and skincare products as the antioxidant compounds such as phenolics compound, carotenoids, and polysaccharides have been identified.</p></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"2 ","pages":"Article 100028"},"PeriodicalIF":0.0,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2950263224000267/pdfft?md5=f122e6f9c897d5e1a639a869ad3c73f9&pid=1-s2.0-S2950263224000267-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141845303","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":"State-of-the-art microalgae-based bioreactor wastewater treatment for the elimination of emerging contaminants: A mechanistic review","authors":"Sukhendu Dey ,&nbsp;Palas Samanta ,&nbsp;Apurba Ratan Ghosh ,&nbsp;Siddharthasankar Banerjee ,&nbsp;Kamalesh Sen","doi":"10.1016/j.clwat.2024.100027","DOIUrl":"10.1016/j.clwat.2024.100027","url":null,"abstract":"<div><p>The review article explores the state-of-the-art advancements in using bioreactors based on microalgae to detoxify wastewater, with an emphasis on the removal of various environmental contaminants (VECs). Because of their persistence and capacity for bioaccumulation, these pollutants—which include nutrients, heavy metals, organic compounds, microplastics, Polycyclic Aromatic Hydrocarbons (PAHs), and emerging contaminants—pose serious threats to the environment and human health. Innovative solutions are required since traditional wastewater treatment procedures frequently fail to efficiently eradicate VECs. The review carefully looks at how well microalgae can break down and remove VECs from wastewater. It clarifies the numerous processes, including as biosorption, bioaccumulation, and biotransformation, by which microalgae aid in the elimination of pollutants. Contaminants can be ingested by microalgae, which can then metabolise them into less toxic compounds or incorporate them into biomass. This study examines how adding microalgae to traditional treatment methods can improve both overall treatment effectiveness and operational stability. Operational challenges such as maintaining optimal growth conditions for microalgae, scalability of bioreactor systems, and the need for continuous monitoring and control are thoroughly discussed. The analysis highlights several avenues for future research, such as genetically modifying microalgae strains to enhance pollutant degradation, creating more effective bioreactor designs, and incorporating cutting-edge monitoring systems. The analysis indicates that although microalgae-based bioreactors have great potential to remove VECs, further investigation and developments in technology are needed to fully realise this potential in large-scale wastewater treatment applications. Researchers, environmental engineers, and politicians can benefit greatly from this review, which offers a thorough grasp of the present and potential future applications of microalgae-based bioreactor technology for wastewater treatment.</p></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"2 ","pages":"Article 100027"},"PeriodicalIF":0.0,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2950263224000255/pdfft?md5=5aed0cfab60d31217763ec685fa3ff8f&pid=1-s2.0-S2950263224000255-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141636520","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":"Nigeria's water crisis: Abundant water, polluted reality","authors":"Efe Jeffery Isukuru ,&nbsp;James Odafe Opha ,&nbsp;Obaro Wilson Isaiah ,&nbsp;Blessing Orovwighose ,&nbsp;Stephen Sunday Emmanuel","doi":"10.1016/j.clwat.2024.100026","DOIUrl":"10.1016/j.clwat.2024.100026","url":null,"abstract":"<div><p>Despite Nigeria's immense wealth in water resources, the country faces a significant water crisis that is exceptionally difficult to resolve, particularly considering the associated public health and security challenges. This review aims to expound on the complex determinants and the outcomes of the water shortage in Nigeria focusing more on its effects on the general livelihood and stability of Nigerians. Using a systematic approach, this paper reviews water scarcity, the causes of pollution– including urban activities, agrochemical run-offs, and mismanagement – and their negative impacts on health and the environment in Nigeria. A total of 305 studies relating to water pollution and crisis in Nigeria were examined in this study. One more point of the evaluation is that the review outlines the existing barriers preventing the all-inclusive availability of clean water, for example, the lack of appropriate infrastructure and inefficient resource management. The review emphasizes improving water treatment facilities, advancing water management strategies that are sustainable, and tightening certain laws.</p></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"2 ","pages":"Article 100026"},"PeriodicalIF":0.0,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2950263224000243/pdfft?md5=edee93e12b12442f471e58609073ec2e&pid=1-s2.0-S2950263224000243-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141636521","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 water footprint of pig farms in Ireland based on commercial farm data","authors":"Shilpi Misra ,&nbsp;Corina E. van Middelaar ,&nbsp;Keelin O’Driscoll ,&nbsp;Amy J. Quinn ,&nbsp;Imke J.M. de Boer ,&nbsp;John Upton","doi":"10.1016/j.clwat.2024.100023","DOIUrl":"https://doi.org/10.1016/j.clwat.2024.100023","url":null,"abstract":"<div><p>Livestock production is getting increased attention due to its impact on natural resources, and freshwater is one such limited resource. To reduce the pressure on freshwater use and develop sustainable livestock systems from farm-to-fork we need to study the whole production cycle, and look for hotspots of major freshwater use. Considering this, we chose intensive pork production as our focal livestock system, since it is one the most eaten meats globally. We focused on pork production in Ireland and studied the freshwater use (green and blue) from cradle-to-farm gate using the water footprint (WFP) method. Detailed farm data (e.g. diet composition, production data) were combined with on-farm water meter data to explore variations in water consumption between farms, and potential explanatory variables for differences in consumption between farms. So far, there have been no WFP studies in pork production that explored this, and insight into variation could help to identify options for improvement. We analyzed the direct (on-farm) and indirect (off-farm) green and blue water footprint of 10 Irish pig farms. Our results show that the average total WFP, including the direct and indirect water footprint, was 2537 L/kg pork, which is at the low end of previously published studies. The indirect green water footprint related to the production of purchased feed was responsible for the largest share (99 %) of the total WFP. The direct blue water footprint formed only a minor component of the total WFP (14 L/kg pork), with drinking water playing the major role. We can conclude from this study that variation in WFP between the least and most efficient farms was small (Q3-Q1 = 181 L/kg pork); nevertheless, this indicates that efficiencies of around 7 % could be gained by the least efficient cohort of farms by adjusting on-farm management practices. We also found a weak negative correlation between WFP and farm size, and WFP and meat produced. Overall, this study suggests that to reduce the burden on freshwater resources and reduce the pork WFP, future research should focus on the feed related impacts.</p></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"2 ","pages":"Article 100023"},"PeriodicalIF":0.0,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2950263224000218/pdfft?md5=385c2ff286221373627d13d171cb42b0&pid=1-s2.0-S2950263224000218-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141483488","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":"Coral sands as potential low cost treatment for removing fluoride from drinking water","authors":"M.H. Lecompte ,&nbsp;B. Robinson ,&nbsp;S. Gaw","doi":"10.1016/j.clwat.2024.100025","DOIUrl":"https://doi.org/10.1016/j.clwat.2024.100025","url":null,"abstract":"<div><p>Fluoride (F-) toxicity from contaminated drinking water affects over 200 million people worldwide. While defluoridation with adsorbents such as calcium carbonate, is commonly used, most technologies are unsuitable for resource-constrained areas. Coral sand is readily available in tropical regions but is yet to be investigated as a potential F- adsorbent. The effectiveness of coral sand at removing F- from drinking water was assessed using acid-enhanced lime defluoridation with two beach (Kiribati and Vanuatu) and one commercially available coral sands. Citric acid was selected as it is readily accessible, palatable and safe for human consumption. Mini columns with a 5:1 sand-to-fluid ratio, 0.025 M citric acid and a 4-hour residence time, could be used seven times to reduce F- from 10 mg/L to below the World Health Organization (WHO) guideline value of 1.5 mg/L. Mini columns packed with coarser grained (1.3 mm) Vanuatu sand could be used at least 10 times. Increasing citric acid to 0.050 M reduced removal efficiency. Prototype treatment devices, developed using 1 L polyethylene jerrycans and 1 kg of commercial sand, could only be used a maximum of three times with 0.025 M citric acid. All coral sands contained F- as well as other trace elements of human health concern, including As, B, Cr, Mn, and Ni that were released into the treated water, resulting in exceedances of drinking water standards. Total Cr concentrations in treated water always exceeded the 0.05 mg/L WHO health guideline whereas As exceeded the 0.01 mg/L value in the majority of treated water samples. In addition, B, Na, and Ni concentrations exceeded the WHO guidelines in many water samples treated with Kiribati and Vanuatu sands. Treated water samples were also unpalatable as potable water based on hardness, total dissolved solids and elevated concentrations of Al, Fe, and Mn. It is recommended that drinking water treated with coral sand be analysed for the presence of contaminants of health concern.</p></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"2 ","pages":"Article 100025"},"PeriodicalIF":0.0,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2950263224000231/pdfft?md5=4e7f41276d1bf560f347944044d31d8c&pid=1-s2.0-S2950263224000231-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141540555","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":"Remote sensing insights for sustainable development: Water quality and landscape dynamics in Mirik Lake, Darjeeling District, West Bengal, India","authors":"Subhra Halder ,&nbsp;Suddhasil Bose","doi":"10.1016/j.clwat.2024.100024","DOIUrl":"https://doi.org/10.1016/j.clwat.2024.100024","url":null,"abstract":"<div><p>The study employs remote sensing and GIS techniques to assess the water quality dynamics of Mirik Lake, located in the Darjeeling Himalayas, West Bengal, India. To analyse the impact of land use and land cover (LULC) changes on the water quality of Mirik Lake from 1993 to 2023. Landsat imagery spanning from 1993 to 2023 was used to detect significant alterations in LULC patterns. Remote sensing and GIS techniques were utilised to analyse the data, focusing on changes in LULC and their implications for water quality. The results indicate a steady increase in total phosphorus (TP), total nitrogen (TN), and Biological Oxygen Demand (BOD) levels, attributed to anthropogenic activities such as urbanisation and tourism development. LULC change analysis highlights the expanding built-up areas and agricultural lands surrounding the lake, contributing to nutrient loading and organic pollution. The spatial distribution of pollution categories underscores the influence of tourist infrastructure on water quality degradation. Integrated watershed management and sustainable development strategies are recommended to mitigate anthropogenic impacts and preserve the ecological integrity of Mirik Lake.</p></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"2 ","pages":"Article 100024"},"PeriodicalIF":0.0,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S295026322400022X/pdfft?md5=df1d8ea482fd9e6b7af54ccbb1aacfdb&pid=1-s2.0-S295026322400022X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141483487","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":"Adsorptive removal of arsenic from drinking water using KOH-modified sewage sludge-derived biochar","authors":"Ahsan Shah ,&nbsp;Arun Arjunan ,&nbsp;Anusha Thumma ,&nbsp;Julia Zakharova ,&nbsp;Timothy Bolarinwa ,&nbsp;Shreah Devi ,&nbsp;Maryam Batool","doi":"10.1016/j.clwat.2024.100022","DOIUrl":"https://doi.org/10.1016/j.clwat.2024.100022","url":null,"abstract":"<div><p>This paper reveals a green chemistry approach to remove arsenic (As⁺³) from water using potassium hydroxide (KOH) modified sewage sludge-derived biochar (SSDB-KOH). Characterisation of the morphology, particle size and composition of the SSDB-KOH pre- and post-adsorption confirmed porous and heterogenous surface favouring adsorption. At ambient temperature (20 °C), the SSDB-KOH dose of 20 g/l achieved 98 % arsenite removal at nearly neutral solution pH (8). This compared favourably with pristine SSDB, where the performance was limited to 41.6 % removal. The enhanced arsenite adsorption of SSDB-KOH was informed by several mechanisms, including ionic interactions, pore filling and metal-pi interactions. The experimental data fits closely with the Langmuir isotherm and pseudo-second-order kinetic models, revealing monolayer adsorption and the chemical interaction between adsorbents and the adsorbate. The spontaneous and endothermic nature of the process was confirmed by the negative value of ΔG and the positive value of ΔH, respectively. The performance of the biochar was evaluated for four-cycle regeneration. Finally, a cost analysis was performed to demonstrate the economic feasibility of using SSDB-KOH to remove arsenic from water.</p></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"2 ","pages":"Article 100022"},"PeriodicalIF":0.0,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2950263224000206/pdfft?md5=678d6fa786b0dabc7f85f92e4c253305&pid=1-s2.0-S2950263224000206-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141434910","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":"Impact of health index and hospitals on dissemination of antibiotic resistance in two sewersheds of the third largest metropolitan region of Brazil","authors":"Henrique Alves Santos,&nbsp;Ana Paula Assad de Carvalho,&nbsp;Juliana Calábria de Araújo","doi":"10.1016/j.clwat.2024.100021","DOIUrl":"https://doi.org/10.1016/j.clwat.2024.100021","url":null,"abstract":"<div><p>Antimicrobial resistance (AMR) stands as a critical threat to global public health. Wastewater-based epidemiology (WBE) provides health data within communities via sewage analysis. This study delved into antibiotic resistance prevalence across two sewersheds in Belo Horizonte, each with distinct health vulnerability indexes (HVI) and number of hospitals. Bacteria resistant (ARB) to amoxicillin, azithromycin, cephalexin, sulfamethoxazole + trimethoprim, meropenem and ARGs (<em>Intl1</em>, <em>sul1</em>, <em>blaTEM, blaKPC</em>) were quantified in sewage from the two sewersheds over the years from 2020 to 2023. Statistical analysis revealed no significant differences in median concentrations of ARBs between sewersheds, except for bacteria resistant to meropenem. ARGs Investigated exhibited similar patterns, with <em>blaKPC</em> showing statistical significant difference. This suggests that hospital density within a sewershed exerts a more pronounced influence on AMR dissemination than HVI. The difference found in meropenem-resistant bacteria, a hospital-prescribed carbapenem, and <em>blaKPC</em> concentrations underscores the impact of hospital antibiotic usage. Thus, the presence and number of hospitals emerges as a pivotal factor in AMR spread, emphasizing the need for specific treatment and management of hospital wastewater to curb antimicrobial resistance.</p></div>","PeriodicalId":100257,"journal":{"name":"Cleaner Water","volume":"2 ","pages":"Article 100021"},"PeriodicalIF":0.0,"publicationDate":"2024-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S295026322400019X/pdfft?md5=02a3ff15665d142459f0ba66a195435d&pid=1-s2.0-S295026322400019X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141429525","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}