npj Clean Water最新文献_第10页

Life cycle and techno-economic assessment of bioresource production from wastewater 废水生物资源生产的生命周期和技术经济评估

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-03-21 DOI: 10.1038/s41545-024-00314-9

Kevin Clack, Deepak Rajagopal, Eric M.V. Hoek

{"title":"Life cycle and techno-economic assessment of bioresource production from wastewater","authors":"Kevin Clack, Deepak Rajagopal, Eric M.V. Hoek","doi":"10.1038/s41545-024-00314-9","DOIUrl":"10.1038/s41545-024-00314-9","url":null,"abstract":"Thermochemical conversion technologies present an opportunity to flip the paradigm of wastewater biosolids management operations from energy-intense and expensive waste management processes into energy-positive and economical resource extraction centers. Herein, we present a uniform “grading framework” to consistently evaluate the environmental and commercial benefits of established and emerging wastewater biosolids management processes from a life cycle and techno-economic perspective. Application of this approach reveals that established wastewater biosolids management practices such as landfilling, land application, incineration, and anaerobic digestion, while commercially viable, offer little environmental benefit. On the other hand, emerging thermochemical bioresource recovery technologies such as hydrothermal liquefaction, gasification, pyrolysis, and torrefaction show potential to provide substantial economic and environmental benefit through the recovery of carbon and nutrients from wastewater biosolids in the form of biofuels, fertilizers, and other high-value products. Some emerging thermochemical technologies have developed beyond pilot scale although their commercial viability remains to be seen.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":null,"pages":null},"PeriodicalIF":11.4,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00314-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140181733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanism of Cr(VI) removal by polyphenols-rich bacterial cellulose gel produced from fermented wine pomace 发酵葡萄酒渣生产的富含多酚的细菌纤维素凝胶去除六价铬的机制

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-03-20 DOI: 10.1038/s41545-024-00318-5

Zhi-yu Li, Jia-jia Dong, Fidelis Azi, Xue Feng, Zhi-wen Ge, Sha Yang, Yu-xia Sun, Xue-qiang Guan, Ming-sheng Dong

{"title":"Mechanism of Cr(VI) removal by polyphenols-rich bacterial cellulose gel produced from fermented wine pomace","authors":"Zhi-yu Li, Jia-jia Dong, Fidelis Azi, Xue Feng, Zhi-wen Ge, Sha Yang, Yu-xia Sun, Xue-qiang Guan, Ming-sheng Dong","doi":"10.1038/s41545-024-00318-5","DOIUrl":"10.1038/s41545-024-00318-5","url":null,"abstract":"Hexavalent chromium (Cr(VI)) is still a common contaminant in water. In this work, we studied the Cr(VI) adsorption by polyphenol-rich bacterial cellulose(BC) gel, synthesized by the Komagataeibacter rhaeticus K15 using wine pomace. The results showed that the equilibrium removal capacity was 473.09 ± 1.41 mg g−1 (dry weight). The quasi-second-order kinetics model and the Langmuir removal isotherm model was the most suitable for describing the Cr(VI) removal process. Toxic Cr(VI) was converted to the low toxic Cr(III) during the removal process via the reduction of Cr(VI) to Cr(III) by polyphenols released into the solution by the BC gel. The FTIR, XRD, XPS, SEM-EDX results indicated the physical adsorption on the surface of BC and the reduction reaction between polyphenol groups and Cr(VI) is the critical mechanism of Cr(VI) removal by BC. The finding of this study demonstrates that polyphenols-rich BC gel produced from wine pomace has a superior feature for future Cr(VI)-wastewater purification.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":null,"pages":null},"PeriodicalIF":11.4,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00318-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140181750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multifunctional integrated pattern for enhancing fog harvesting water unidirectional transport in a heterogeneous pattern 多功能集成模式，增强异质模式中的集雾水单向输送能力

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-03-19 DOI: 10.1038/s41545-024-00317-6

Daejeong Yang, A. G. Ramu, Dongjin Choi

引用次数: 0

The photocatalytic oxidation of As(III) on birnessite 白桦石上 As(III) 的光催化氧化作用

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-03-19 DOI: 10.1038/s41545-024-00316-7

Ping Li, Yun Wang, Jingjing Wang, Wei Wang, Zhe Ding, Jianjun Liang, Qiaohui Fan

{"title":"The photocatalytic oxidation of As(III) on birnessite","authors":"Ping Li, Yun Wang, Jingjing Wang, Wei Wang, Zhe Ding, Jianjun Liang, Qiaohui Fan","doi":"10.1038/s41545-024-00316-7","DOIUrl":"10.1038/s41545-024-00316-7","url":null,"abstract":"Birnessite is regarded as an efficient oxidizing agent that would significantly influence the environmental fate of elements such as arsenic. This study compared the chemical and photocatalytic oxidation of As(III) over birnessite. During the chemical oxidation, As(III) was oxidized to As(V), while Mn(IV) was reduced to Mn(II), subsequently forming MnOOH. The coverage of the reactive sites by MnOOH inhibited the chemical oxidation of residual As(III). At pH 5.0, after 360 min of reaction, 61% of As(III) was oxidized to As(V), and the oxidation of As(III) decreased with an increase in pH. The photocatalytic oxidation of As(III), where almost all As(III) could be oxidized to As(V) over a pH range of 5.0–8.0 and 360 min, was much more efficient compared to chemical oxidation. In contrast to chemical oxidation, the formation of MnOOH slightly affected the photocatalytic performance of birnessite. It was demonstrated that •O2− radicals and holes (hvb+) played an important role in the photocatalytic oxidation of As(III) over birnessite. Our findings confirmed that light dramatically promoted the oxidation of As(III) by birnessite, broadening the understanding of the environmental behaviors of arsenic.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":null,"pages":null},"PeriodicalIF":11.4,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00316-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140161495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strategies for mitigating challenges associated with trace organic compound removal by high-retention membrane bioreactors (HR-MBRs) 缓解与高截留膜生物反应器（HR-MBR）去除痕量有机化合物有关的挑战的战略

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-03-14 DOI: 10.1038/s41545-024-00313-w

Oranso T. Mahlangu, Thabo I. Nkambule, Bhekie B. Mamba, Faisal I. Hai

{"title":"Strategies for mitigating challenges associated with trace organic compound removal by high-retention membrane bioreactors (HR-MBRs)","authors":"Oranso T. Mahlangu, Thabo I. Nkambule, Bhekie B. Mamba, Faisal I. Hai","doi":"10.1038/s41545-024-00313-w","DOIUrl":"10.1038/s41545-024-00313-w","url":null,"abstract":"Due to the limitations of conventional ultrafiltration/microfiltration-based membrane bioreactors (UF/MF-MBRs) in removing trace organic compounds (TrOCs), the concept of high-retention membrane bioreactors (HR-MBRs) was introduced. Despite the benefits, HR-MBRs still suffer several drawbacks. Therefore, this paper critically reviews the effectiveness and feasibility of the proposed strategies to alleviate fouling, salinity build-up and incomplete biodegradation of TrOCs during wastewater treatment by HR-MBRs. The severity of each challenge is compared amongst the various configurations together with the associated capital and operational expenditure to determine the most cost-effective set-up. Guidance is provided on strategies and/or lessons that could be adopted from well-established processes used at municipal scale. Chemical cleaning as mitigation for fouling degrades membranes leading to poor TrOCs removal, while pre-treatment and membrane surface modification increase operational expenditure (OpEX). However, there are other environmentally-friendly pretreatment and cleaning options which hold great potential for future application. These options such as advanced oxidation processes (AOPs) are critically discussed in this work. Further, in-depth discussion is made on the pros and cons of the various approaches (such as frequent sludge withdrawal, intermittent UF/MF filtration and using organic salts) to alleviate salt build-up. Finally, incomplete biodegradation of rejected TrOCs in the bioreactor transfers problems of toxic pollutants from wastewater treatment to sludge management. Herein mitigation strategies including using stronger biological agents and coupling HR-MBRs with other techniques are debated. Despite the challenges, HR-MBRs are a promising solution for clean water production from TrOCs impaired wastewater. Therefore, more research is needed to improve the performance of HR-MBRs.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":null,"pages":null},"PeriodicalIF":11.4,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00313-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140135524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adsorption and DFT investigations of Cr(VI) removal using nanocrystals decorated with graphene oxide 使用氧化石墨烯装饰的纳米晶体去除 Cr(VI) 的吸附和 DFT 研究

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-03-13 DOI: 10.1038/s41545-024-00306-9

Simranjeet Singh, Amith G. Anil, Basavaraju Uppara, Sushant K. Behera, Bidisha Nath, Pavithra N, Shipra Bhati, Joginder Singh, Nadeem A. Khan, Praveen C. Ramamurthy

{"title":"Adsorption and DFT investigations of Cr(VI) removal using nanocrystals decorated with graphene oxide","authors":"Simranjeet Singh, Amith G. Anil, Basavaraju Uppara, Sushant K. Behera, Bidisha Nath, Pavithra N, Shipra Bhati, Joginder Singh, Nadeem A. Khan, Praveen C. Ramamurthy","doi":"10.1038/s41545-024-00306-9","DOIUrl":"10.1038/s41545-024-00306-9","url":null,"abstract":"In this research, a solvothermal approach is introduced to synthesize a metal-organic frameworks (MOFs) nanocomposite (GO/UiO-66-NDC) for the removal of Cr(VI) from water. A comprehensive analysis was performed to understand the physical, chemical, and structural properties of the MOF nanocomposite. The adsorption behavior of Cr(VI) was investigated by changing various parameters, such as pH, dosage, and concentration, to determine isotherms, thermodynamics, and kinetics. The results showed that the nanocomposite had a high tolerance to pH and thermal stability, with a high adsorption capacity of 157.23 mg g−1 for Cr(VI) at pH 3 due to the presence of zirconium oxide clusters. The density functional theory simulations showed that the nanocomposite had ten times more dynamic delocalized surface states, which enhanced the adsorption capacity and agreed with the experimental results. Furthermore, the nanocomposite exhibited better regeneration performance compared to previously reported materials, making it a promising super-adsorbent for removing Cr(VI) from water.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":null,"pages":null},"PeriodicalIF":11.4,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00306-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140123832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy system for evaluation of modification methods on energy transfer efficiency and optimization of membranes 用于评估能量传递效率改良方法和优化膜的能源系统

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-03-11 DOI: 10.1038/s41545-024-00310-z

Tian Li, Hong Zhou, Wei Ding, Jinjun Wang, Tiancheng Zhang

{"title":"Energy system for evaluation of modification methods on energy transfer efficiency and optimization of membranes","authors":"Tian Li, Hong Zhou, Wei Ding, Jinjun Wang, Tiancheng Zhang","doi":"10.1038/s41545-024-00310-z","DOIUrl":"10.1038/s41545-024-00310-z","url":null,"abstract":"Saving energy is crucial for utilizing membrane technology, but there is no energy parameter for understanding the relationships among membrane performance and energy. Here, φ is defined as the energy transfer efficiency of the membrane, and its numerical expression of membrane performance is poor (e.g., in the range of 10−23). The method of modifying membranes is a crucial determinant for developing membrane science, but researchers using current parameters to evaluate modification methods might lead to erroneous conclusions. Hence, the newly established system θ is used to analyze the influence of different modification methods on energy consumption, which not only establish the relationship between different modification methods but also provide the research routes for future optimization methods. The main conclusions are as follows: (1) The current modification methods influence on the energy transfer efficiency of the pristine membrane by about 0.4902–3.278 × 104 times; (2) Using scientific data certifies that the modified support layer of the membranes is a more effective method for reducing the energy consumption than the modified activity layer of the membranes; (3) The establishment of this system provides data support for analyzing the advantages and disadvantages of modification methods, and provides guidance for how to optimize the modification methods of membranes. Therefore, this study not only fills key knowledge gaps in membrane science, but also provides theoretical support for how to optimize membrane modification methods.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":null,"pages":null},"PeriodicalIF":11.4,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00310-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140096745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Combined advanced oxidation dye-wastewater treatment plant: design and development with data-driven predictive performance modeling 高级氧化染料废水联合处理厂：利用数据驱动的性能预测模型进行设计和开发

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-03-08 DOI: 10.1038/s41545-024-00308-7

Pankaj Singh Chauhan, Kirtiman Singh, Aditya Choudhary, Urmila Brighu, S. K. Singh, Shantanu Bhattacharya

{"title":"Combined advanced oxidation dye-wastewater treatment plant: design and development with data-driven predictive performance modeling","authors":"Pankaj Singh Chauhan, Kirtiman Singh, Aditya Choudhary, Urmila Brighu, S. K. Singh, Shantanu Bhattacharya","doi":"10.1038/s41545-024-00308-7","DOIUrl":"10.1038/s41545-024-00308-7","url":null,"abstract":"The recalcitrant nature of the industrial dyes poses a significant challenge to existing treatment technologies due to the stringent environmental regulations. This combined with the inefficiency of a single treatment method has led to the implementation of the combination of primary, secondary, and tertiary treatment processes, which fails during complex secondary aeration processes due to variable pH loads of industrial effluent wastewater. This article presents a modified design methodology of a pilot-scale micro-pre-treatment unit using a solar-triggered advanced oxidation process reactor that both effectively controls the influent variability at the source and mitigates textile effluents for making the discharge reusable for different industrial purposes. The proposed modified combination technique of controlled serial processes inclusive of primary, secondary, and tertiary treatment steps with ZnO/ZnO-GO NanoMat-based advanced oxidation process demonstrates complete remediation of industrial grade effluent with effective reuse of the discharge. Further, a reliable prediction model for estimating water quality parameter using machine learning models are proposed. Multi-linear regression and Artificial Neural network modeling provide simple, accurate, and robust prediction capabilities, which are evaluated for the efficiency of the processes. The generated prediction models capture the output parameters within an acceptable level of accuracy $$({{boldsymbol{R}}}_{{adj}}^{{bf{2}}}, >, 0.90)$$ and allow compliance with the discharge Inland Water Discharge Standards (IWDS).","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":null,"pages":null},"PeriodicalIF":11.4,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00308-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140063883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication of porous beta-cyclodextrin functionalized PVDF/Fe–MOF mixed matrix membrane for enhanced ciprofloxacin removal 制备多孔 beta-环糊精功能化 PVDF/Fe-MOF 混合基质膜以提高环丙沙星去除率

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-03-07 DOI: 10.1038/s41545-024-00312-x

Lewis Kamande Njaramba, Yeomin Yoon, Chang Min Park

{"title":"Fabrication of porous beta-cyclodextrin functionalized PVDF/Fe–MOF mixed matrix membrane for enhanced ciprofloxacin removal","authors":"Lewis Kamande Njaramba, Yeomin Yoon, Chang Min Park","doi":"10.1038/s41545-024-00312-x","DOIUrl":"10.1038/s41545-024-00312-x","url":null,"abstract":"Herein, we demonstrate the synthesis of beta-cyclodextrin (β–CD) functionalized polyvinylidene fluoride (PVDF) and iron-based metal-organic framework (Fe–MOF) mixed matrix membrane (MMM) for the enhanced removal of ciprofloxacin (CIP) from water. The membranes were prepared using the phase inversion technique with PVDF as the polymer matrix, Fe–MOF as the filler, and polyvinylpyrrolidone (PVP) as the porogen. The optimized MMM with 7% wt. Fe–MOF exhibited excellent performance with 87.6% removal efficiency. Moreover, the maximum adsorption capacity was 6.43 mg g–1. The β–CD functionalization improved the MMM hydrophilicity exhibited by the water contact angle (WCA) analysis (WCA = 55°). Furthermore, excellent adsorption performance can be attributed to the large Fe–MOF specific surface area (682.5 m2 g–1), the high porosity (77%), and the average pore diameter (395 nm) of the membrane. The inclusion of PVP (1% wt.) enhanced the porous nature of the MMM and, consequently, the adsorption performance for CIP. Notably, the hydrophilic and macroporous membrane showed good reusability with over 70% removal efficiency after five sequential adsorption–desorption cycles. The insights from this study suggest that the PMC–7 membrane can be an excellent candidate for the remediation of organic contaminants from aquatic environments.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":null,"pages":null},"PeriodicalIF":11.4,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00312-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140053265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Understanding energy performance in drinking water treatment plants using the efficiency analysis tree approach 使用效率分析树方法了解饮用水处理厂的能源绩效

IF 11.4 1区工程技术

npj Clean Water Pub Date : 2024-02-29 DOI: 10.1038/s41545-024-00307-8

Alexandros Maziotis, Maria Molinos-Senante

{"title":"Understanding energy performance in drinking water treatment plants using the efficiency analysis tree approach","authors":"Alexandros Maziotis, Maria Molinos-Senante","doi":"10.1038/s41545-024-00307-8","DOIUrl":"10.1038/s41545-024-00307-8","url":null,"abstract":"Water treatment processes are known to consume substantial amounts of energy, making it crucial to understand their efficiency, drivers, and potential energy savings. In this study, we apply Efficiency Analysis Tree (EAT), which combines machine learning and linear programming techniques to assess the energy performance of 146 Chilean drinking water treatment plants (DWTPs) for 2020. Additionally, we utilize bootstrap regression techniques to examine the influence of operating characteristics on energy efficiency. The results indicate that the evaluated DWTPs exhibited poor energy performance, with an average energy efficiency score of 0.197. The estimated potential energy savings were found to be 0.005 kWh/m3. Several factors, such as the age of the facility, source of raw water, and treatment technology, were identified as significant drivers of energy efficiency in DWTPs. The insights gained from our study can be valuable for policymakers in making informed decisions regarding the adoption of practices that promote efficient and sustainable energy use within the water cycle.","PeriodicalId":19375,"journal":{"name":"npj Clean Water","volume":null,"pages":null},"PeriodicalIF":11.4,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41545-024-00307-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139994015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0