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Yang X, Chen Z, Xiang C, Shan H, Wang R. Enhanced continuous atmospheric water harvesting with scalable hygroscopic gel driven by natural sunlight and wind. Nat Commun 2024; 15:7678. [PMID: 39227366 PMCID: PMC11372108 DOI: 10.1038/s41467-024-52137-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 08/28/2024] [Indexed: 09/05/2024] Open
Abstract
Sorption-based atmospheric water harvesting (SAWH) has received unprecedented attention as a future water and energy platform. However, the water productivity of SAWH systems is still constrained by the slow sorption kinetics at material and component levels and inefficient condensation. Here, we report a facile method to prepare hygroscopic interconnected porous gel (HIPG) with fast sorption-desorption kinetics, high scalability and stability, and strong adhesion property for highly efficient SAWH. We further design a solar-wind coupling driven SAWH device with collaborative heat and mass enhancement achieving continuous water production. Concentrated sunlight contributes to enhancing the desorption and condensation synergistically, and natural wind is introduced to drive the device operation and improve the sorption kinetics. The device demonstrated record high working performance of 14.9 Lwater m-2 day-1 and thermal efficiency of 25.7% in indoor experiments and 3.5-8.9 Lwater m-2 day-1 in outdoor experiments by solar concentration without any other energy consumption. This work provides an up-and-coming pathway to realize highly efficient and sustainable clean water supply for off-grid and arid regions.
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Affiliation(s)
- Xinge Yang
- Institute of Refrigeration and Cryogenics, MOE Engineering Research Center of Solar Power and Refrigeration, Shanghai Jiao Tong University, 200240, Shanghai, China
| | - Zhihui Chen
- Institute of Refrigeration and Cryogenics, MOE Engineering Research Center of Solar Power and Refrigeration, Shanghai Jiao Tong University, 200240, Shanghai, China
| | - Chengjie Xiang
- Institute of Refrigeration and Cryogenics, MOE Engineering Research Center of Solar Power and Refrigeration, Shanghai Jiao Tong University, 200240, Shanghai, China.
| | - He Shan
- Institute of Refrigeration and Cryogenics, MOE Engineering Research Center of Solar Power and Refrigeration, Shanghai Jiao Tong University, 200240, Shanghai, China
| | - Ruzhu Wang
- Institute of Refrigeration and Cryogenics, MOE Engineering Research Center of Solar Power and Refrigeration, Shanghai Jiao Tong University, 200240, Shanghai, China.
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2
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Yang Z, Xiao H, Mao Y, Zhang H, Lu Y, Hu Z. Amplifying chlorinated phenol decomposition via Dual-Pathway O 2 Activation: The impact of zirconium loading on BiOCl. J Colloid Interface Sci 2024; 668:171-180. [PMID: 38677206 DOI: 10.1016/j.jcis.2024.04.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 04/18/2024] [Accepted: 04/22/2024] [Indexed: 04/29/2024]
Abstract
The effectiveness of photocatalytic molecular oxygen (O2) activation in pollutant removal relies on the targeted production of reactive oxygen species (ROS). Herein, we demonstrate the dual-pathway activation of O2 on BiOCl through zirconium (Zr) loading. The incorporation of Zr onto the surface of BiOCl not only leads to an increased generation of oxygen vacancies (OV) but also fosters a coupling between the d electrons of Zr and OV, forming dual-active sites known as Zr-oxygen vacancies (Zr-OV). Generally, OV adsorbs O2 and transfers one electron directly to form superoxide radicals (•O2-). Contrary to the conventional single-electron direct activation of O2 to form •O2-, Zr-OV exhibits more flexible coordination and superior electron-donating capabilities. It facilitates O2 conversion to peroxide radicals (O22-) and enables the subsequent generation of •O2- from O22-, significantly promotes the dechlorination and mineralization efficiency of chlorophenol under visible light. This study presents a straightforward strategy to precisely regulate ROS production by expanding pathways, shedding light on the critical role of managing ROS generation for effective pollutant purification.
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Affiliation(s)
- Zhiping Yang
- School of Materials and Environmental Engineering, Chengdu Technological University, Chengdu 610031, China
| | - Hongmei Xiao
- Key State Laboratory of Industrial Vent Gas Reuse, The Southwest Research & Design Institute of the Chemical Industry, Chengdu 610225, China
| | - Yudie Mao
- School of Materials and Environmental Engineering, Chengdu Technological University, Chengdu 610031, China
| | - Hai Zhang
- School of Materials and Environmental Engineering, Chengdu Technological University, Chengdu 610031, China
| | - Yixin Lu
- School of Materials and Environmental Engineering, Chengdu Technological University, Chengdu 610031, China.
| | - Zhao Hu
- Ministry of Education, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, Guizhou 550025, China.
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3
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Cao S, Wan Q, Cao R, Wang J, Huang T, Wen G. Solar/ClO 2 system inactivates fungal spores in drinking water: Synergy, efficiency and mechanisms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 948:174886. [PMID: 39032749 DOI: 10.1016/j.scitotenv.2024.174886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 06/24/2024] [Accepted: 07/17/2024] [Indexed: 07/23/2024]
Abstract
The risk of fungal pollution in drinking water has been paid attention. Solar/chlorine dioxide (ClO2) combined system is an environment-friendly, economical and efficient disinfection method, especially for countries and regions that are economically backward and still exposed to unsafe drinking water. In this paper, the kinetics, influencing factors, mechanism and regrowth potential of inactivated Aspergillus niger (A. niger) spores by solar/ClO2 were reported for the first time. The inactivation curve can be divided into three stages: instant inactivation within 1-2 min, slow linear inactivation and finally a tail. The synergistic factors produced by solar/ClO2 in terms of log reduction and maximum inactivation rate were 1.194 and 1.112, respectively. The inhibitory effect on the regrowth of A. niger spores inactivated by solar/ClO2 was also stronger than that by ClO2 alone. Strongly oxidizing reactive species produced by solar/ClO2 accelerated the accumulation of endogenic reactive oxygen species (ROS) caused by oxidation stress of A. niger spores, improving the inactivation ability of the system. The inactivation order of A. niger spores was: loss of culturability, accumulation of intracellular ROS, loss of membrane integrity, leakage of intracellular species and change of morphology. The inactivation performance of solar/ClO2 was better than solar/chlor(am)ine according to the comparison of inactivation efficiency and regrowth potential. Results also suggested that solar/ClO2 process was more suitable for the treatment of ground water sources.
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Affiliation(s)
- Shulei Cao
- Shaanxi Provincial Field Scientific Observation and Research Station of Water Quality in Qinling Mountains, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Qiqi Wan
- Shaanxi Provincial Field Scientific Observation and Research Station of Water Quality in Qinling Mountains, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Ruihua Cao
- Shaanxi Provincial Field Scientific Observation and Research Station of Water Quality in Qinling Mountains, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Jingyi Wang
- Shaanxi Provincial Field Scientific Observation and Research Station of Water Quality in Qinling Mountains, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Tinglin Huang
- Shaanxi Provincial Field Scientific Observation and Research Station of Water Quality in Qinling Mountains, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Collaborative Innovation Center of Water Pollution Control and Water Quality Security Assurance of Shaanxi Province, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Gang Wen
- Shaanxi Provincial Field Scientific Observation and Research Station of Water Quality in Qinling Mountains, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China; Collaborative Innovation Center of Water Pollution Control and Water Quality Security Assurance of Shaanxi Province, Xi'an University of Architecture and Technology, Xi'an 710055, PR China.
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Castaño-Henao L, Mendez DFG, Egan S, Sanabria J. Changes in groundwater and surface water bacterial communities under disinfection processes: Chlorination, ozonization, photo-fenton and ultraviolet radiation. CURRENT RESEARCH IN MICROBIAL SCIENCES 2024; 7:100244. [PMID: 38974672 PMCID: PMC11225702 DOI: 10.1016/j.crmicr.2024.100244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 10/07/2023] [Accepted: 05/22/2024] [Indexed: 07/09/2024] Open
Abstract
Pathogenic bacteria, introduced in water sources through faecal contamination, have traditionally been investigated as individual species, leading to the establishment of microbial, sanitary, and environmental quality indicators. Recent advancements in our understanding of the microbiome and its intricate interactions within the human-microbiome-environment network advocate for a broader evaluation of the impact of disinfection on the entire microbial community. In this study, we conducted a comprehensive screening experiment involving four disinfection processes; ozone, ultraviolet radiation with wavelengths between 200 - 280 nm (UV-C), photo-Fenton, and chlorination, applied to two distinct water sources; surface (SW) and groundwater (GW). The cells that remained viable after treatment were recovered using Brain Heart Infusion (BHI) broth, and 16S rRNA gene sequencing was used for their identification. Our findings confirmed the presence of faecal contamination in the water sources and revealed distinct effects of each treatment on the recovered bacterial populations. The chlorination of groundwater samples likely had a greater impact on bacteria in a vegetative state than on spores. Consequently, this led to a higher abundance in the BHI cultures of sporulating bacteria such as Bacillus (increasing from 0.36 to 93.62 %), while ozonation led to an elevated recovery of Pseudomonas (increasing from 45.2 to 69.9 %). Conversely, in surface water, calcium hypochlorite and ozone treatments favored the selection of Staphylococcus and Bacillus, whose relative abundance in the cultures increased from 0 to 39.22 % and from 0.35 to 96.6 %, respectively. In groundwater, Pseudomonas was resistant to UV-C radiation and their relative abundance increased from 45.2 % to 93.56 %, while photo-Fenton was effective against this bacterial group decreasing its relative abundance to 0.46 %. However, other genera such as Bacteroides, Aeromonas, and Citrobacter seemed to be less injured by this disinfection process. BHI broth was successful in recovering various bacterial groups that exhibited resistance to sublethal water disinfection.
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Affiliation(s)
- Lucía Castaño-Henao
- Environmental Microbiology and Biotechnology Laboratory, Engineering Faculty, Engineering School of Environmental & Natural Resources, Universidad del Valle - Mélendez Campus, Calle 13 # 100 -00, Cali, Colombia
| | | | - Siobhon Egan
- Australian National Phenome Centre, Murdoch University, Perth, WA 6150, Australia
| | - Janeth Sanabria
- Environmental Microbiology and Biotechnology Laboratory, Engineering Faculty, Engineering School of Environmental & Natural Resources, Universidad del Valle - Mélendez Campus, Calle 13 # 100 -00, Cali, Colombia
- Australian National Phenome Centre, Murdoch University, Perth, WA 6150, Australia
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Rao S, Sun Z, Liu Q, Cheng C, Jin C, Gao J, Li B, Li Y, Liu L, Yang J, Zhu Y. Engineering Atomic Ag 1-N 6 Sites with Enhanced Performance of Eradication Drug-Resistant Bacteria over Visible-Light-Driven Antibacterial Membrane. ACS NANO 2024; 18:7074-7083. [PMID: 38386076 DOI: 10.1021/acsnano.3c10765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Utilizing visible light for water disinfection is a more convenient, safe, and practical alternative to ultraviolet-light sterilization. Herein, we developed silver (Ag) single-atom anchored g-C3N4 (P-CN) nanosheets (Ag1/CN) and then utilized a spin-coating method to fabricate the Ag1/CN-based-membrane for effective antibacterial performance in natural water and domestic wastewater. The incorporated Ag single atom formed a Ag1-N6 motif, which increased the charge density around the N atoms, resulting in a built-in electric field ∼17.2 times stronger than that of pure P-CN and optimizing the dynamics of reactive oxygen species (ROS) production. Additionally, the Ag1-N6 motif inhibited the release of Ag ions, ensuring good biocompatibility. Based on the first-principles calculation, the adsorption energy of O2 on the Ag1/CN (-0.32 eV) was lower than that of P-CN (-0.07 eV), indicating that loaded Ag single atom can lower the energy barrier for O2 activation, generating extra *OH radicals that cooperated with *O2- to effectively neutralize bacteria. As a result, the Ag1/CN powder-catalyst with the concentration of 30 ppm demonstrated a 99.9% antibacterial efficiency against drug-resistant bacteria (Escherichia coli, Staphylococcus aureus, kanamycin-resistant Escherichia coli, and methicillin-resistant Staphylococcus aureus) under visible-light irradiation for 4 h. This efficacy was 24.8 times higher than that of the P-CN powder catalyst. Moreover, the Ag1/CN-based-membrane can maintain a 99.9% bactericidal efficiency for natural water and domestic wastewater treatment using a homemade flow device, demonstrating its potential for water disinfection. Notably, the visible-light-driven antibacterial efficiency of the Ag1/CN catalyst outperformed the majority of the reported g-C3N4-based catalysts/membranes.
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Affiliation(s)
- Shaosheng Rao
- Department of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Zhongti Sun
- Department of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Qinqin Liu
- Department of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Chao Cheng
- Department of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Cheng Jin
- Department of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Jinsong Gao
- Department of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Bing Li
- Department of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yi Li
- Department of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Lei Liu
- Department of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Juan Yang
- Department of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yongfa Zhu
- Department of Chemistry, Tsinghua University, Beijing 100084, China
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Zhang X, Razanajatovo MR, Du X, Wang S, Feng L, Wan S, Chen N, Zhang Q. Well-designed protein amyloid nanofibrils composites as versatile and sustainable materials for aquatic environment remediation: A review. ECO-ENVIRONMENT & HEALTH (ONLINE) 2023; 2:264-277. [PMID: 38435357 PMCID: PMC10902511 DOI: 10.1016/j.eehl.2023.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 09/07/2023] [Accepted: 09/08/2023] [Indexed: 03/05/2024]
Abstract
Amyloid nanofibrils (ANFs) are supramolecular polymers originally classified as pathological markers in various human degenerative diseases. However, in recent years, ANFs have garnered greater interest and are regarded as nature-based sustainable biomaterials in environmental science, material engineering, and nanotechnology. On a laboratory scale, ANFs can be produced from food proteins via protein unfolding, misfolding, and hydrolysis. Furthermore, ANFs have specific structural characteristics such as a high aspect ratio, good rigidity, chemical stability, and a controllable sequence. These properties make them a promising functional material in water decontamination research. As a result, the fabrication and application of ANFs and their composites in water purification have recently gained considerable attention. Despite the large amount of literature in this field, there is a lack of systematic review to assess the gap in using ANFs and their composites to remove contaminants from water. This review discusses significant advancements in design techniques as well as the physicochemical properties of ANFs-based composites. We also emphasize the current progress in using ANFs-based composites to remove inorganic, organic, and biological contaminants. The interaction mechanisms between ANFs-based composites and contaminants are also highlighted. Finally, we illustrate the challenges and opportunities associated with the future preparation and application of ANFs-based composites. We anticipate that this review will shed new light on the future design and use of ANFs-based composites.
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Affiliation(s)
- Xiaolin Zhang
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Mamitiana Roger Razanajatovo
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Xuedong Du
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Shuo Wang
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Li Feng
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Shunli Wan
- College of Life & Environment Sciences, Huangshan University, Huangshan 245041, China
| | - Ningyi Chen
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Qingrui Zhang
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
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7
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Cheng QY, Wang T, Hu J, Chen HY, Xu JJ. In Situ Probing the Short-Lived Intermediates in Visible-Light Heterogeneous Photocatalysis by Mass Spectrometry. Anal Chem 2023; 95:14150-14157. [PMID: 37665645 DOI: 10.1021/acs.analchem.3c03494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2023]
Abstract
Visible-light-mediated heterogeneous photocatalysis has recently emerged as an environmentally friendly and energy-sustainable alternative for organic transformations. Despite the advancements in developing wide varieties of photocatalysts during the past decades, the accurate probing and identification of the photogenerated species, especially the short-lived radical intermediates, are still challenging. In this work, we reported a hybrid ion emitter that integrated with a pico-liter heterogeneous photocatalytic reactor, which was fabricated by depositing the photocatalyst (e.g., TiO2) into the front tip of a quartz micropipette. Benefited from the dual-function feature of the hybrid micropipette (i.e., a clog-free tip-confined pico-liter reactor for heterogeneous photocatalysis and an ion emitter for nanoelectrospray ionization), sensitized photoredox reactions at the catalyst-solution interface can be triggered upon visible-light irradiation using a cheap LED laser (453 nm), and the newly produced transient radical intermediates can be rapidly transformed into gaseous ions for mass spectrometric identification. Using this novel low-delay coupling device, photogenerated intermediates, including the cationic radicals produced during the photooxidation of anilines and the anionic radicals produced during the photoreduction of quinones, were successfully captured by mass spectrometry. We believe that our hybrid photochemical microreactor/ion emitter has provided a new and powerful tool for exploring the complicated heterogeneous photochemical processes, especially their ultrafast initial transformations.
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Affiliation(s)
- Qiu-Yue Cheng
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Ting Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Jun Hu
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, P. R. China
| | - Hong-Yuan Chen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Jing-Juan Xu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
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Wang L, Mai Y, Li S, Shu L, Fang J. Efficient inactivation of amoeba spores and their intraspore bacteria by solar/chlorine: Kinetics and mechanisms. WATER RESEARCH 2023; 242:120288. [PMID: 37419027 DOI: 10.1016/j.watres.2023.120288] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 06/21/2023] [Accepted: 06/28/2023] [Indexed: 07/09/2023]
Abstract
Amoebae are widespread in water and serve as environment vectors for pathogens, which may threaten public health. This study evaluated the inactivation of amoeba spores and their intraspore bacteria by solar/chlorine. Dictyostelium discoideum and Burkholderia agricolaris B1qs70 were selected as model amoebae and intraspore bacteria, respectively. Compared to solar irradiation and chlorine, solar/chlorine enhanced the inactivation of amoeba spores and intraspore bacteria, with 5.1 and 5.2-log reduction at 20 min, respectively. The enhancement was similar in real drinking water by solar/chlorine under natural sunlight. However, the spore inactivation decreased to 2.97-log by 20 min solar/chlorine under oxygen-free condition, indicating that ozone played a crucial role in the spore inactivation, as also confirmed by the scavenging test using tert‑butanol to scavenge the ground-state atomic oxygen (O(3P)) as a ozone precursor. Moreover, solar/chlorine induced the shape destruction and structural collapse of amoeba spores by scanning electron microscopy. As for intraspore bacteria, their inactivation was likely ascribed to endogenous reactive oxygen species. As pH increased from 5.0 to 9.0, the inactivation of amoeba spores decreased, whereas that of intraspore bacteria was similar at pH 5.0 and 6.5 during solar/chlorine treatment. This study first reports the efficient inactivation of amoeba spores and their intraspore pathogenic bacteria by solar/chlorine in drinking water.
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Affiliation(s)
- Liping Wang
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275 China
| | - Yingwen Mai
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275 China
| | - Shenzhou Li
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275 China
| | - Longfei Shu
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275 China.
| | - Jingyun Fang
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275 China.
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Guan X, Kumar P, Li Z, Tran TKA, Chahal S, Lei Z, Huang C, Lin C, Huang J, Hu L, Chang Y, Wang L, Britto JSJ, Panneerselvan L, Chu D, Wu T, Karakoti A, Yi J, Vinu A. Borophene Embedded Cellulose Paper for Enhanced Photothermal Water Evaporation and Prompt Bacterial Killing. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2205809. [PMID: 36698305 PMCID: PMC9982542 DOI: 10.1002/advs.202205809] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 12/19/2022] [Indexed: 05/10/2023]
Abstract
Solar-driven photothermal water evaporation is considered an elegant and sustainable technology for freshwater production. The existing systems, however, often suffer from poor stability and biofouling issues, which severely hamper their prospects in practical applications. Conventionally, photothermal materials are deposited on the membrane supports via vacuum-assisted filtration or dip-coating methods. Nevertheless, the weak inherent material-membrane interactions frequently lead to poor durability, and the photothermal material layer can be easily peeled off from the hosting substrates or partially dissolved when immersed in water. In the present article, the discovery of the incorporation of borophene into cellulose nanofibers (CNF), enabling excellent environmental stability with a high light-to-heat conversion efficiency of 91.5% and water evaporation rate of 1.45 kg m-2 h-1 under simulated sunlight is reported. It is also demonstrated that borophene papers can be employed as an excellent active photothermal material for eliminating almost 100% of both gram-positive and gram-negative bacteria within 20 min under three sun irradiations. The result opens a new direction for the design of borophene-based papers with unique photothermal properties which can be used for the effective treatment of a wide range of wastewaters.
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Affiliation(s)
- Xinwei Guan
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Prashant Kumar
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
- Department of PhysicsIndian Institute of Technology PatnaBihta CampusPatna801106India
| | - Zhixuan Li
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Thi Kim Anh Tran
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Sumit Chahal
- Department of PhysicsIndian Institute of Technology PatnaBihta CampusPatna801106India
| | - Zhihao Lei
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Chien‐Yu Huang
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Chun‐Ho Lin
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Jing‐Kai Huang
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Long Hu
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Yuan‐Chih Chang
- School of Photovoltaic and Renewable Engineeringthe University of New South WalesSydneyNSW2052Australia
| | - Li Wang
- School of Photovoltaic and Renewable Engineeringthe University of New South WalesSydneyNSW2052Australia
| | - Jolitta S. J. Britto
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Logeshwaran Panneerselvan
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Dewei Chu
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Tom Wu
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
- Department of Applied PhysicsThe Hong Kong Polytechnic UniversityHung HomHong Kong999077China
| | - Ajay Karakoti
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Jiabao Yi
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
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10
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Hong H, Lu Y, Zhu X, Wu Q, Jin L, Jin Z, Wei X, Ma G, Yu H. Cytotoxicity of nitrogenous disinfection byproducts: A combined experimental and computational study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 856:159273. [PMID: 36209887 DOI: 10.1016/j.scitotenv.2022.159273] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 10/02/2022] [Accepted: 10/02/2022] [Indexed: 06/16/2023]
Abstract
Nitrogenous disinfection byproducts (N-DBPs), such as halocetamides (HAcAms), haloacetonitriles (HANs) and halonitromethanes (HNMs), are emerging DBPs in drinking water. They are more toxic than currently regulated DBPs, attracting more attention to their toxic effects and mechanism. In this study, human embryonic kidney (HEK) 293T cells were employed to explore the cytotoxicity of 29 N-DBPs. The influence of molecular structures and different halogenations on cytotoxicity has been comparatively analyzed. As toxicity is the downstream of chemico-biological interactions, the thiol reactivity of 29 N-DBPs has thus been evaluated by using glutathione (GSH) as a model nucleophile, which is the most prevalent cellular thiol and acts as an antioxidant to protect cells by detoxifying electrophilic compounds. Results show that the cytotoxicity of N-DBPs follows by the order of HAcAms > HANs > HNMs, which is different from their reactivity with GSH (the median of kGSH ranks as HNMs > HAcAms > HANs). However, a significant correlation (p < 0.001) between log kGSH and log IC50 (concentration causing 50% inhibition) has been respectively observed for HAcAms and HANs subset and HNMs subset, indicating such chemical reaction is a probable trigger for these DBPs to result in cytotoxicity. Finally, two separate quantitative structure - activity relationship (QSAR) models based on HANs & HAcAms subset and HNMs subset have been developed for estimating IC50 values. The good statistical performance makes the models possible to quickly and accurately predict IC50 values of other N-DBPs, providing basic data for their health risk assessment and greatly reducing in vivo and in vitro experiments.
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Affiliation(s)
- Huachang Hong
- College of Geography and Environmental Sciences, Zhejiang Normal University, Yingbin Avenue 688, 321004 Jinhua, China
| | - Yuchen Lu
- College of Geography and Environmental Sciences, Zhejiang Normal University, Yingbin Avenue 688, 321004 Jinhua, China
| | - Xiaoyan Zhu
- College of Geography and Environmental Sciences, Zhejiang Normal University, Yingbin Avenue 688, 321004 Jinhua, China
| | - Qiang Wu
- College of Geography and Environmental Sciences, Zhejiang Normal University, Yingbin Avenue 688, 321004 Jinhua, China
| | - Lingmin Jin
- College of Geography and Environmental Sciences, Zhejiang Normal University, Yingbin Avenue 688, 321004 Jinhua, China
| | - Zhigang Jin
- College of Chemistry and Life Sciences, Zhejiang Normal University, Yingbin Avenue 688, 321004 Jinhua, China
| | - Xiaoxuan Wei
- College of Geography and Environmental Sciences, Zhejiang Normal University, Yingbin Avenue 688, 321004 Jinhua, China
| | - Guangcai Ma
- College of Geography and Environmental Sciences, Zhejiang Normal University, Yingbin Avenue 688, 321004 Jinhua, China
| | - Haiying Yu
- College of Geography and Environmental Sciences, Zhejiang Normal University, Yingbin Avenue 688, 321004 Jinhua, China.
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11
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Huo Z, Kim YJ, Chen Y, Song T, Yang Y, Yuan Q, Kim SW. Hybrid energy harvesting systems for self-powered sustainable water purification by harnessing ambient energy. FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 2023; 17:118. [PMID: 37096021 PMCID: PMC10115484 DOI: 10.1007/s11783-023-1718-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 03/01/2023] [Accepted: 03/03/2023] [Indexed: 05/03/2023]
Abstract
The development of self-powered water purification technologies for decentralized applications is crucial for ensuring the provision of drinking water in resource-limited regions. The elimination of the dependence on external energy inputs and the attainment of self-powered status significantly expands the applicability of the treatment system in real-world scenarios. Hybrid energy harvesters, which convert multiple ambient energies simultaneously, show the potential to drive self-powered water purification facilities under fluctuating actual conditions. Here, we propose recent advancements in hybrid energy systems that simultaneously harvest various ambient energies (e.g., photo irradiation, flow kinetic, thermal, and vibration) to drive water purification processes. The mechanisms of various energy harvesters and point-of-use water purification treatments are first outlined. Then we summarize the hybrid energy harvesters that can drive water purification treatment. These hybrid energy harvesters are based on the mechanisms of mechanical and photovoltaic, mechanical and thermal, and thermal and photovoltaic effects. This review provides a comprehensive understanding of the potential for advancing beyond the current state-of-the-art of hybrid energy harvester-driven water treatment processes. Future endeavors should focus on improving catalyst efficiency and developing sustainable hybrid energy harvesters to drive self-powered treatments under unstable conditions (e.g., fluctuating temperatures and humidity).
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Affiliation(s)
- Zhengyang Huo
- School of Environment and Natural Resources, Renmin University of China, Beijing, 100872 China
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419 Republic of Korea
| | - Young Jun Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419 Republic of Korea
| | - Yuying Chen
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023 China
| | - Tianyang Song
- School of Environment and Natural Resources, Renmin University of China, Beijing, 100872 China
| | - Yang Yang
- Institute of Scientific and Technical Information of China, Beijing, 100038 China
| | - Qingbin Yuan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023 China
| | - Sang Woo Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419 Republic of Korea
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12
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García-Gil Á, García-Muñoz RA, Martínez-García A, Polo-López MI, Wasihun AG, Teferi M, Asmelash T, Conroy R, McGuigan KG, Marugán J. Solar water disinfection in large-volume containers: from the laboratory to the field. A case study in Tigray, Ethiopia. Sci Rep 2022; 12:18933. [PMID: 36344608 PMCID: PMC9640691 DOI: 10.1038/s41598-022-23709-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 11/03/2022] [Indexed: 11/09/2022] Open
Abstract
The lack of safe drinking water affects communities in low-to-medium-income countries most. This barrier can be overcome by using sustainable point-of-use water treatments. Solar energy has been used to disinfect water for decades, and several efforts have been made to optimise the standard procedure of solar water disinfection (SODIS process). However, the Health Impact Assessment of implementing advanced technologies in the field is also a critical step in evaluating the success of the optimisation. This work reports a sustainable scaling-up of SODIS from standard 2 L bottles to 25 L transparent jerrycans (TJC) and a 12-month field implementation in four sites of Tigray in Ethiopia, where 80.5% of the population lives without reliable access to safe drinking water and whose initial baseline average rate of diarrhoeal disease in children under 5 years was 13.5%. The UVA dose required for 3-log reduction of E. coli was always lower than the minimum UVA daily dose received in Tigray (9411 ± 55 Wh/m2). Results confirmed a similar decrease in cases of diarrhoea in children in the implementation (25 L PET TJC) and control (2 L PET bottles) groups, supporting the feasibility of increasing the volume of the SODIS water containers to produce safer drinking water with a sustainable and user-friendly process.
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Affiliation(s)
- Ángela García-Gil
- grid.28479.300000 0001 2206 5938Department of Chemical and Environmental Technology (ESCET), Universidad Rey Juan Carlos, C/Tulipán s/n, Móstoles, 28933 Madrid, Spain
| | - Rafael A. García-Muñoz
- grid.28479.300000 0001 2206 5938Department of Chemical and Environmental Technology (ESCET), Universidad Rey Juan Carlos, C/Tulipán s/n, Móstoles, 28933 Madrid, Spain
| | - Azahara Martínez-García
- grid.420019.e0000 0001 1959 5823Plataforma Solar de Almería-CIEMAT, Carretera Senes, Km 4, 04200 Tabernas (Almería), Spain
| | - Maria Inmaculada Polo-López
- grid.420019.e0000 0001 1959 5823Plataforma Solar de Almería-CIEMAT, Carretera Senes, Km 4, 04200 Tabernas (Almería), Spain
| | - Araya Gebreyesus Wasihun
- grid.30820.390000 0001 1539 8988Department of Medical Microbiology and Immunology, College of Health Sciences, Mekelle University, Tigray, Ethiopia
| | - Mekonen Teferi
- grid.30820.390000 0001 1539 8988Department of Biology, College of Natural and Computational Sciences, Mekelle University, Tigray, Ethiopia
| | - Tsehaye Asmelash
- grid.448640.a0000 0004 0514 3385Department of Medical Microbiology, College of Health Sciences, Aksum University, Tigray, Ethiopia
| | - Ronan Conroy
- grid.4912.e0000 0004 0488 7120Royal College of Surgeons in Ireland (RCSI), Data Science Centre, Dublin 2, Ireland
| | - Kevin G. McGuigan
- grid.4912.e0000 0004 0488 7120Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland (RCSI), Dublin 2, Ireland
| | - Javier Marugán
- grid.28479.300000 0001 2206 5938Department of Chemical and Environmental Technology (ESCET), Universidad Rey Juan Carlos, C/Tulipán s/n, Móstoles, 28933 Madrid, Spain
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13
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Xu Y, Hu J, Zhang X, Yuan D, Duan G, Li Y. Robust and multifunctional natural polyphenolic composites for water remediation. MATERIALS HORIZONS 2022; 9:2496-2517. [PMID: 35920729 DOI: 10.1039/d2mh00768a] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The scarcity of clean water has become a global environmental problem which constrains the development of public health, economy, and sustainability. In recent years, natural polyphenols have drawn increasing interests as promising platforms towards diverse water remediation composites and devices, owing to their abundant and renewable resource in nature, highly active surface chemistry, and multifunctionality. This review aims to summarize the most recent advances and highlights of natural polyphenol-based composite materials (e.g., nanofibers, membranes, particles, and hydrogels) for water remediation, by focusing on their structural and functional features, as well as their diversified applications including membrane filtration, solar distillation, adsorption, advanced oxidation processes, and disinfection. Finally, the future challenges in this field are also prospected. It is anticipated that this review will provide new opportunities towards the future development of natural polyphenols and other kinds of naturally occurring molecules in water purification applications.
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Affiliation(s)
- Yuanting Xu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.
| | - Junfei Hu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.
| | - Xueqian Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.
| | - Dandan Yuan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.
| | - Gaigai Duan
- Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Yiwen Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China.
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14
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Chen R, Hu L, Zhang H, Lin D, Wang J, Xu D, Gong W, Liang H. Toward emerging contaminants removal using acclimated activated sludge in the gravity-driven membrane filtration system. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129541. [PMID: 35810515 DOI: 10.1016/j.jhazmat.2022.129541] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/24/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
The occurrence of emerging contaminants is attracting widespread attention due to its potential threat to aquatic organisms and public health. Gravity-driven membrane (GDM) filtration can effectively eliminate water contamination with pathogenic microorganisms in rural areas while being challenged by various micro-pollutants (MPs). This study investigated the removal and transformation of sulfamethoxazole (SMX) in GDM for the first time, and pre-adding acclimated activated sludge was proposed to improve the removal of MPs. More rapid and higher SMX degradation was observed with pre-adding domestication sludge, and the system had better tolerance to SMX shocks. Besides, in the presence of domesticated sludge, more SMX metabolic pathways and better mineralization rates were obtained, which was related to more SMX-resistant bacteria and easier biodegradable carbon sources in the system. Pre-adding sludge also increased the richness and diversity of bacterial community, which provided higher removal efficiencies of conventional pollutants. Thus, the removal rates of DOC (14.7%), NH4+-N (5.6%) and fluorescent substances were obviously improved compared with the control group. In this study, the crisis of MPs was tackled and the removal of conventional pollutants was enhanced by pre-adding domesticated sludge in GDM, which ensured the water quality in rural areas.
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Affiliation(s)
- Rui Chen
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Lin Hu
- CCCC First Highway Consultants Co., Ltd., Xi'an 710075, PR China; Xi'an CCCC Environmental Engineering Co., Ltd., Xi'an 710075, PR China.
| | - Han Zhang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Dachao Lin
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Jinlong Wang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Daliang Xu
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Weijia Gong
- School of Engineering, Northeast Agricultural University, 600 Changjiang Street, Xiangfang District, Harbin 150030, PR China.
| | - Heng Liang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
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15
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Xia Y, Li H, Xiong C, Zhang R. Sanitary Evaluation of Rural Water Supply Projects - China, 2020. China CDC Wkly 2022; 4:775-778. [PMID: 36284607 PMCID: PMC9547727 DOI: 10.46234/ccdcw2022.155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 06/27/2022] [Indexed: 11/08/2022] Open
Abstract
What is already known about this topic? Over the last decade, the centralized water quality and supply have been substantially enhanced in rural China. However, compared with the urban water supply, most of the rural Water Supply Projects (WaSPs) are small in scale, simple in engineering facilities, and poor in management. What is added by this report? Most of the rural WaSPs have been basically guaranteed sustainable sources of water. More measures should be taken to improve water disinfection effects, water losses control, and operational and maintenance management. The WaSPs with water supply <3,000 m3/d need to be paid more attention. What are the implications for public health practice? Laws and regulations requiring rural WaSPs to carry out a sanitary evaluation should be established. WaSPs should use tools such as World Health Organization Water Safety Plans to identify and control risks.
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Affiliation(s)
- Yunting Xia
- National Center for Rural Water Supply Technical Guidance, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Hongxing Li
- National Center for Rural Water Supply Technical Guidance, Chinese Center for Disease Control and Prevention, Beijing, China,Hongxing Li,
| | - Chuanlong Xiong
- National Center for Rural Water Supply Technical Guidance, Chinese Center for Disease Control and Prevention, Beijing, China,Chuanlong Xiong,
| | - Rong Zhang
- National Center for Rural Water Supply Technical Guidance, Chinese Center for Disease Control and Prevention, Beijing, China
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16
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Huo ZY, Winter LR, Wang XX, Du Y, Wu YH, Hübner U, Hu HY, Elimelech M. Synergistic Nanowire-Enhanced Electroporation and Electrochlorination for Highly Efficient Water Disinfection. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:10925-10934. [PMID: 35820052 DOI: 10.1021/acs.est.2c01793] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Conventional water disinfection methods such as chlorination typically involve the generation of harmful disinfection byproducts and intensive chemical consumption. Emerging electroporation disinfection techniques using nanowire-enhanced local electric fields inactivate microbes by damaging their outer structures without byproduct formation or chemical dosing. However, this physical-based method suffers from a limited inactivation efficiency under high water flux due to an insufficient contact time. Herein, we integrate electrochlorination with nanowire-enhanced electroporation to achieve a synergistic flow-through process for efficient water disinfection targeting bacteria and viruses. Electroporation at the cathode induces sub-lethal damages on the microbial outer structures. Subsequently, electrogenerated active chlorine at the anode aggravates these electroporation-induced injuries to the level of lethal damage. This sequential flow-through disinfection system achieves complete disinfection (>6.0-log) under a very high water flux of 2.4 × 104 L/(m2 h) with an applied voltage of 2.0 V. This disinfection efficiency is 8 times faster than that of electroporation alone. Further, the specific energy consumption for the disinfection by this novel process is extremely low (8 × 10-4 kW h/m3). Our results demonstrate a promising method for rapid and energy-efficient water disinfection by coupling electroporation with electrochlorination to meet vital needs for pathogen elimination.
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Affiliation(s)
- Zheng-Yang Huo
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, PR China
| | - Lea R Winter
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
| | - Xiao-Xiong Wang
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
| | - Ye Du
- College of Architecture and Environment, Sichuan University, Chengdu 610065, PR China
| | - Yin-Hu Wu
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Uwe Hübner
- Chair of Urban Water Systems Engineering, Technical University of Munich, Garching 85748, Germany
| | - Hong-Ying Hu
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Menachem Elimelech
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
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17
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Liu Y, Dong W, Shen S, Meng F, Wang J, Yang K, Lin D. Enhancement of E. coli inactivation by photosensitized erythrosine-based solar disinfection under weakly acidic conditions. WATER RESEARCH 2022; 212:118125. [PMID: 35123381 DOI: 10.1016/j.watres.2022.118125] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 01/24/2022] [Accepted: 01/25/2022] [Indexed: 06/14/2023]
Abstract
Cost-effective disinfection technology is urgently needed in poor rural areas. Erythrosine (ERY)-based solar disinfection (SODIS) provides a promising solution because of its effective inactivation of viruses and gram-positive bacteria at low cost. However, the poor gram-negative bacteria (G-, e.g., Escherichia coli) inactivation of photosensitized ERY inhibits its application. Herein, for the first time, the protonation of ERY was found to greatly enhance its G- inactivation, and 99.99999% (7.0 log) of E. coli were completely inactivated within only 30 s using 2.5 mg/L ERY under 200 mW/cm2 visible light irradiation. The inactivation rate constant (k) reached 17.5 min-1 at pH 4.0, which was 4730 times higher than that at pH 7.0. At a lower pH, more severe cell wall and genomic DNA damage was observed. A linear correlation between k and monoanionic ERY (HE-) content was obtained, indicating that HE- rather than dianionic ERY (E2-) participated in the inactivation at pH 5.0-7.0, which was further explained by the higher production of reactive oxygen species and bacterial adsorption of HE- than E2-. Both 1O2 and O2-• dominated bacterial inactivation, contributing 56.8% and 43.2%, respectively. O2-• but not 1O2 caused ERY photobleaching. OH• was not involved in either inactivation or photobleaching. Humic acid and salts (NaCl, Na2SO4, CaCl2, and MgCl2) slightly inhibited inactivation, while NaHCO3 accelerated inactivation. Complete inactivation (99.9999%) of E. coli was achieved within ∼30 min at pH 5.0 in ERY-based SODIS with good adaptation to various water matrices and weather (sunny or partly cloudy). This work will help to promote the application of ERY-based disinfection especially for SODIS in poor rural areas.
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Affiliation(s)
- Yi Liu
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Wenhua Dong
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Shuyi Shen
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Fanxu Meng
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Jiajia Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Kun Yang
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Daohui Lin
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Ecological Civilization Academy, Anji 313300, China.
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18
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An X, Cheng R, Liu P, Reinhard BM. Plasmonic photoreactors-coated plastic tubing as combined-active-and-passive antimicrobial flow sterilizer. J Mater Chem B 2022; 10:2001-2010. [PMID: 35235640 PMCID: PMC9167571 DOI: 10.1039/d1tb02250d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Plastic materials are ubiquitous in medical devices and consumer goods. As bacterial contamination of plastic surfaces can pose significant health risks, there is a need for effective approaches both to inactivate bacteria on plastic surfaces and to prevent colonization of plastic surfaces. In this study, we evaluate a plasmonic photoreactor coating for plastic surfaces that provides both active and passive antimicrobial effects and implement a visible light-driven antibacterial flow sterilizer. We demonstrate that this approach inactivates bacteria in an aqueous suspension passed through a photoreactor-coated polyethylene tubing, achieving log reduction values (LRVs) > 5 for both Gram-positive and -negative bacteria under resonant LED illumination. Importantly, the antimicrobial flow sterilizers do not cause a detectable loss of functionality for monoclonal antibodies that were included in this work as an example of high-value biologics that require sterilization. Under ambient light illumination, the plasmonic photoreactor coating exhibits a significant inhibitory effect on bacterial colonization and biofilm formation. The inhibitory effect was substantially weaker for mammalian cells, indicating some selectivity in the protection provided by the coating.
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Affiliation(s)
- Xingda An
- Department of Chemistry, Boston University, Boston, MA, 02215, USA.
- The Photonics Center, Boston University, Boston, MA, 02215, USA
| | - Ronghai Cheng
- Department of Chemistry, Boston University, Boston, MA, 02215, USA.
| | - Pinghua Liu
- Department of Chemistry, Boston University, Boston, MA, 02215, USA.
| | - Björn M Reinhard
- Department of Chemistry, Boston University, Boston, MA, 02215, USA.
- The Photonics Center, Boston University, Boston, MA, 02215, USA
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19
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Mondejar ME, Avtar R, Diaz HLB, Dubey RK, Esteban J, Gómez-Morales A, Hallam B, Mbungu NT, Okolo CC, Prasad KA, She Q, Garcia-Segura S. Digitalization to achieve sustainable development goals: Steps towards a Smart Green Planet. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 794:148539. [PMID: 34323742 DOI: 10.1016/j.scitotenv.2021.148539] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 06/14/2021] [Accepted: 06/15/2021] [Indexed: 06/13/2023]
Abstract
Digitalization provides access to an integrated network of unexploited big data with potential benefits for society and the environment. The development of smart systems connected to the internet of things can generate unique opportunities to strategically address challenges associated with the United Nations Sustainable Development Goals (SDGs) to ensure an equitable, environmentally sustainable, and healthy society. This perspective describes the opportunities that digitalization can provide towards building the sustainable society of the future. Smart technologies are envisioned as game-changing tools, whereby their integration will benefit the three essential elements of the food-water-energy nexus: (i) sustainable food production; (ii) access to clean and safe potable water; and (iii) green energy generation and usage. It then discusses the benefits of digitalization to catalyze the transition towards sustainable manufacturing practices and enhance citizens' health wellbeing by providing digital access to care, particularly for the underserved communities. Finally, the perspective englobes digitalization benefits by providing a holistic view on how it can contribute to address the serious challenges of endangered planet biodiversity and climate change.
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Affiliation(s)
- Maria E Mondejar
- Department of Mechanical Engineering, Technical University of Denmark, Building 403, 2800 Kongens Lyngby, Denmark
| | - Ram Avtar
- Faculty of Environmental Earth Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Heyker Lellani Baños Diaz
- Plant Protection Division, Head of Agricultural Pests Group, National Center for Animal and Plant Health (CENSA), Apartado 10, San José de las Lajas, Provincia Mayabeque, Cuba
| | - Rama Kant Dubey
- Institute of Environment & Sustainable Development, Banaras Hindu University, Varanasi 221005, India; NUS Environmental Research Institute, National University of Singapore, Singapore 117411, Singapore
| | - Jesús Esteban
- Department of Chemical Engineering and Analytical Science, School of Engineering, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - Abigail Gómez-Morales
- Edson College of Nursing and Health Innovation, Arizona State University, Phoenix, 550 N3rd St, AZ 85004, United States
| | - Brett Hallam
- School of Photovoltaic and Renewable Energy Engineering, UNSW Sydney, Kensington, NSW 2052, Australia
| | - Nsilulu Tresor Mbungu
- Department of Electrical, Electronic and Computer Engineering, University of Pretoria, Pretoria 0002, South Africa; Department of Electrical Engineering, University of Sharjah, Sharjah, United Arab Emirates; Department of Electrical Engineering, Tshwane University of Technology, Pretoria, South Africa
| | - Chukwuebuka Christopher Okolo
- Department of Land Resources Management and Environmental Protection, Mekelle University, P.O. Box 23, Ethiopia; Centre for Microbiology and Environmental Systems Science, Department of Microbiology and Ecosystem Science, University of Vienna, Althanstr, 14, 1090 Wien, Austria
| | - Kumar Arun Prasad
- Department of Geography, Central University of Tamil Nadu, Thiruvarur 610 005, India
| | - Qianhong She
- School of Civil and Environmental Engineering, Nanyang Technological University, 639798, Singapore; Singapore Membrane Technology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 637141, Singapore
| | - Sergi Garcia-Segura
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287-3005, United States.
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20
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Chaúque BJM, Rott MB. Solar disinfection (SODIS) technologies as alternative for large-scale public drinking water supply: Advances and challenges. CHEMOSPHERE 2021; 281:130754. [PMID: 34029967 DOI: 10.1016/j.chemosphere.2021.130754] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/25/2021] [Accepted: 04/29/2021] [Indexed: 06/12/2023]
Abstract
Gastrointestinal waterborne diseases, continue to stand out among the most lethal diseases in developing countries, because of consuming contaminated water taken from unsafe sources. Advances made in recent decades in methods of solar water disinfection (SODIS) have shown that SODIS is an effective and inexpensive method of providing drinking water, capable of substantially reducing the prevalence and mortality of waterborne diseases. The increased impact of SODIS in communities lacking drinking water services depends on a successful upgrade from conventional SODIS (based on PET bottle reactors) in high flow continuous flow systems for solar water disinfection (CFSSWD). This review aimed to identify the main limitations of conventional SODIS that hinder its application as a large-scale drinking water supply strategy, and to propose ways to overcome these limitations (without making it economically inaccessible) based on the current frontier of advances technological. It was found that the successful development of the CFSSWD depends on overcoming the current limitations of conventional SODIS and the development of systems whose configurations allow combining the properties of solar pasteurization (SOPAS) and SODIS. Different improvements need to be made to the main components of the CFSSWD, such as increasing the performance of solar radiation collectors, photo and thermal reactors and heat exchangers. The integration of disinfection technologies based on photocatalytic and photothermal nanomaterials also needs to be achieved. The performance evaluation of the CFSSWD should be made considering resistant microorganisms, such as the environmental resistance structures of bacteria or protozoa (spores or (oo)cysts) as targets of disinfection approaches.
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Affiliation(s)
- Beni Jequicene Mussengue Chaúque
- Department of Microbiology, Immunology and Parasitology, Institute of Basic Health Sciences, Universidade Federal Do Rio Grande Do Sul, Brazil; Department of Science, Technology, Engineering and Mathematics, Universidade Rovuma, Niassa Branch, Mozambique.
| | - Marilise Brittes Rott
- Department of Microbiology, Immunology and Parasitology, Institute of Basic Health Sciences, Universidade Federal Do Rio Grande Do Sul, Brazil.
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21
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Parsa SM, Momeni S, Hemmat A, Afrand M. Effectiveness of solar water disinfection in the era of COVID-19 (SARS-CoV-2) pandemic for contaminated water/wastewater treatment considering UV effect and temperature. JOURNAL OF WATER PROCESS ENGINEERING 2021; 43:102224. [PMID: 35592836 PMCID: PMC8285244 DOI: 10.1016/j.jwpe.2021.102224] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 05/26/2021] [Accepted: 07/15/2021] [Indexed: 05/09/2023]
Abstract
Long is the way and hard, that out of COVID-19 leads up to light. The virus is highly contagious and spread rapidly and the number of infections increases exponentially. The colossal number of infections and presence of the novel coronavirus RNA in human wastes (e.g. Excreta/urine) even after the patients recovered and the RT-PCR tests were negative, results in massive load of the viral in water environments. Numerous studies reported the presence of SARS-CoV-2 in wastewater samples. The risk of contaminating water bodies in the regions which suffer from the lack of proper sanitation system and wastewater treatment plants (mostly in developing countries) is higher. Since solar water disinfection (SODIS) is usually used by people in developing countries, there is a concern about using this method during the pandemic. Because the SARS-CoV-2 can be eliminated by high temperature (>56 °C) and UVC wavelength (100-280 nm) while SODIS systems mainly work at lower temperature (<45 °C) and use the available UVA (315-400 nm). Thus, during a situation like the ongoing pandemic using SODIS method for wastewater treatment (or providing drinking water) is not a reliable method. It should be reminded that the main aim of the present study is not just to give insights about the possibilities and risks of using SODIS during the ongoing pandemic but it has broader prospect for any future outbreak/pandemic that results in biological contamination of water bodies. Nevertheless, some experimental studies seem to be necessary by all researchers under conditions similar to developing countries.
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Affiliation(s)
- Seyed Masoud Parsa
- Department of Energy Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Saba Momeni
- Guilan University of Medical Science, Anzali International Campus, Bandar Anzali, Iran
| | - Ahmadreza Hemmat
- Department of Medicine, Najafabad Branch, Islamic Azad University, Najafabad, Iran
| | - Masoud Afrand
- Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
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22
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A Strategy to Revalue a Wood Waste for Simultaneous Cadmium Removal and Wastewater Disinfection. ADSORPT SCI TECHNOL 2021. [DOI: 10.1155/2021/3552300] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In this investigation, the possibility of wood waste (hardwoods such as oaks’ and alternatives’ staves from Balkan cooperage) revalorization for simultaneous cadmium removal and wastewater disinfection was examined. All samples were characterized in terms of their crystallinity index and crystallite size, amount of functional groups, and surface chemistry (determined by ATR-FTIR) as well as antibacterial activity. Mulberry is characterized by the lowest crystallinity index which can be ascribed to the highest crystallite size disabling crystallite denser packaging, while myrobalan plum has about 23% lower crystallite size that enables crystallite better packaging, thus resulting in a 42.4% higher crystallinity index compared to the mulberry. All oaks have a significantly higher amount of carboxyl groups compared to the alternatives (0.23-0.28 vs. 0.12-0.19 mmol/g). The adsorption experiments revealed that with increasing the initial cadmium concentration from 15 up to 55 mg/g, samples’ adsorption capacity increases by 89-220%. The equilibrium data fit well with the Langmuir isotherm model implying monolayer coverage of cadmium ions over a homogeneous wood surface. The relationship between the samples’ maximum adsorption capacities (ranged from 5.726 to 12.618 mg/g), their crystallinity index, and crystallite size was established. According to ATR-FTIR spectra, aldehyde, carboxyl, hydroxyl, and phenyl groups present on the wood waste surface are involved in Cd2+ adsorption which proceeds via the interplay of the complexation, cation-π interactions, and ion-exchange mechanisms. Mulberry and myrobalan plum showed about 89% and 80% of the total uptake capacity of cadmium within 60 min, while the equilibrium was attained after 240 min of contact time. Good compliance with pseudo-second kinetic order indicated that cadmium adsorption was mediated by chemical forces. Thermodynamic parameters revealed the spontaneous and exothermic character of cadmium ion adsorption onto mulberry and myrobalan plum. All studied samples provide maximum bacterial reduction (>99%) for E. coli and S. aureus. Wood waste from Balkan cooperage can be successfully used for simultaneous cadmium removal and wastewater disinfection.
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23
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The Pathway towards Photoelectrocatalytic Water Disinfection: Review and Prospects of a Powerful Sustainable Tool. Catalysts 2021. [DOI: 10.3390/catal11080921] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Photoelectrocatalysis is a hybrid photon/electron-driven process that benefits from the synergistic effects of both processes to enhance and stabilize the generation of disinfecting oxidants. Photoelectrocatalysis is an easy to operate technology that can be scaled-up or scaled-down for various water treatment applications as low-cost decentralized systems. This review article describes the fundamentals of photoelectrocatalysis, applied to water disinfection to ensure access to clean water for all as a sustainable development goal. Advances in reactor engineering design that integrate light-delivery and electrochemical system requirements are presented, with a description of photo-electrode material advances, including doping, nano-decoration, and nanostructure control. Disinfection and cell inactivation are described using different model microorganisms such as E. coli, Mycobacteria, Legionella, etc., as well the fungus Candida parapsilosis, with relevant figures of merit. The key advances in the elucidation of bacterial inactivation mechanisms by photoelectrocatalytic treatments are presented and knowledge gaps identified. Finally, prospects and further research needs are outlined, to define the pathway towards the future of photoelectrocatalytic disinfection technologies.
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Huo ZY, Lee DM, Wang S, Kim YJ, Kim SW. Emerging Energy Harvesting Materials and Devices for Self-Powered Water Disinfection. SMALL METHODS 2021; 5:e2100093. [PMID: 34927999 DOI: 10.1002/smtd.202100093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 05/10/2021] [Indexed: 06/14/2023]
Abstract
Contaminated drinking water is one of the main pathogen transmission pathways making waterborne illnesses such as diarrheal diseases and gastroenteritis a huge threat to public health, especially in the areas where sanitation facilities and gird power are inadequate such as rural and disaster hit areas. Self-powered water disinfection systems are a promising solution in these cases. In this review paper, the authors provide an overview of the new and emerging methods of applying energy harvesting materials and devices as a source of power for water disinfection systems microbial disinfection in water by harnessing ambient forms of energy such as mechanical motion, light, and heat into electricity. The authors begin with a brief introduction of the different energy harvesting technologies commonly applied in water disinfection; triboelectric, piezoelectric, pyroelectric, and photovoltaic effects. Various microbial disinfection mechanisms and types of device construction are summarized. Then, a detailed discussion of the energy harvester-driven water disinfection process is provided. Finally, challenges and perspectives regarding the future development of self-powered water disinfection are described.
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Affiliation(s)
- Zheng-Yang Huo
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Dong-Min Lee
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Si Wang
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu, 610054, P. R. China
| | - Young-Jun Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Sang-Woo Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
- Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
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25
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Huo ZY, Lee DM, Kim YJ, Kim SW. Solar-induced hybrid energy harvesters for advanced oxidation water treatment. iScience 2021; 24:102808. [PMID: 34308295 PMCID: PMC8283326 DOI: 10.1016/j.isci.2021.102808] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Water treatment based on advanced oxidation processes (AOPs) supplies clean water to rural areas lacking electric power supply and/or during natural disasters and pandemics. Considering the abundance of solar energy in the ambient environment, the solar-driven AOPs show an interesting potential to driving the water purification process. Involving the energy harvester (EH) that harvests mechanical or thermal energy into electricity to the solar-driven AOPs can achieve sustainable and self-powered water purification. Herein, we summarize the recent progress in the application of solar-induced hybrid EHs that harvest solar and mechanical/thermal energy simultaneously to drive AOP water treatment. A detailed discussion of the solar-induced hybrid EHs enabling AOP water treatment based on the mechanisms of piezo-, tribo-, pyro-, and thermo-assisted photocatalysis is provided. In addition, this paper explores future opportunities and strategies of the solar-induced hybrid EHs to drive the AOP water treatment in actual situations with unstable and fluctuating environmental conditions.
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Affiliation(s)
- Zheng-Yang Huo
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
| | - Dong-Min Lee
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
| | - Young-Jun Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
| | - Sang-Woo Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea.,SKKU Advanced Institute of Nanotechnology (SAINT), Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
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26
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Thomas N, Dionysiou DD, Pillai SC. Heterogeneous Fenton catalysts: A review of recent advances. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:124082. [PMID: 33069994 PMCID: PMC7530584 DOI: 10.1016/j.jhazmat.2020.124082] [Citation(s) in RCA: 199] [Impact Index Per Article: 66.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 09/18/2020] [Accepted: 09/21/2020] [Indexed: 05/17/2023]
Abstract
Heterogeneous Fenton catalysts are emerging as excellent materials for applications related to water purification. In this review, recent trends in the synthesis and application of heterogeneous Fenton catalysts for the abatement of organic pollutants and disinfection of microorganisms are discussed. It is noted that as the complexity of cell wall increases, the resistance level towards various disinfectants increases and it requires either harsh conditions or longer exposure time for the complete disinfection. In case of viruses, enveloped viruses (e.g. SARS-CoV-2) are found to be more susceptible to disinfectants than the non-enveloped viruses. The introduction of plasmonic materials with the Fenton catalysts broadens the visible light absorption efficiency of the hybrid material, and incorporation of semiconductor material improves the rate of regeneration of Fe(II) from Fe(III). A special emphasis is given to the use of Fenton catalysts for antibacterial applications. Composite materials of magnetite and ferrites remain a champion in this area because of their easy separation and reuse, owing to their magnetic properties. Iron minerals supported on clay materials, perovskites, carbon materials, zeolites and metal-organic frameworks (MOFs) dramatically increase the catalytic degradation rate of contaminants by providing high surface area, good mechanical stability, and improved electron transfer. Moreover, insights to the zero-valent iron and its capacity to remove a wide range of organic pollutants, heavy metals and bacterial contamination are also discussed. Real world applications and the role of natural organic matter are summarised. Parameter optimisation (e.g. light source, dosage of catalyst, concentration of H2O2 etc.), sustainable models for the reusability or recyclability of the catalyst and the theoretical understanding and mechanistic aspects of the photo-Fenton process are also explained. Additionally, this review summarises the opportunities and future directions of research in the heterogeneous Fenton catalysis.
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Affiliation(s)
- Nishanth Thomas
- Nanotechnology and Bio-engineering Research Group, Department of Environmental Science, Institute of Technology Sligo, Sligo, Ireland; Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology Sligo, Sligo, Ireland
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH, USA
| | - Suresh C Pillai
- Nanotechnology and Bio-engineering Research Group, Department of Environmental Science, Institute of Technology Sligo, Sligo, Ireland; Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology Sligo, Sligo, Ireland.
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27
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Zhu W, Zhang C, Chen Y, Deng Q. Synthesis of Magnetic Ferrocene-Containing Polymer with Photothermal Effects for Rapid Degradation of Methylene Blue. Polymers (Basel) 2021; 13:polym13040558. [PMID: 33668593 PMCID: PMC7918094 DOI: 10.3390/polym13040558] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/22/2021] [Accepted: 01/23/2021] [Indexed: 01/04/2023] Open
Abstract
Photothermal materials are attracting more and more attention. In this research, we synthesized a ferrocene-containing polymer with magnetism and photothermal properties. The resulting polymer was characterized by Fourier-transform infrared (FT-IR), vibrating sample magnetometer (VSM), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). Its photo-thermocatalytic activity was investigated by choosing methylene blue (MB) as a model compound. The degradation percent of MB under an irradiated 808 nm laser reaches 99.5% within 15 min, and the degradation rate is 0.5517 min−1, which is 145 times more than that of room temperature degradation. Under irradiation with simulated sunlight, the degradation rate is 0.0092 min−1, which is approximately 2.5 times more than that of room temperature degradation. The present study may open up a feasible route to degrade organic pollutants.
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28
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Hendrickson C, Oremo J, Akello OO, Bunde S, Rayola I, Akello D, Akwiri D, Park SJ, Dorevitch S. Decentralized solar-powered drinking water ozonation in Western Kenya: an evaluation of disinfection efficacy. Gates Open Res 2020; 4:56. [PMID: 33210079 PMCID: PMC7644876 DOI: 10.12688/gatesopenres.13138.2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/06/2020] [Indexed: 01/12/2023] Open
Abstract
Background: Decentralized drinking water treatment methods generally apply membrane-based treatment approaches. Ozonation of drinking water, which previously has only been possible at large centralized facilities, can now be accomplished on a small-scale using microplasma technology. The efficacy of decentralized solar-powered drinking water treatment systems has not previously been described. Methods: We established a 1,000L decentralized solar-powered water treatment system located in Kisumu County, Kenya. Highly contaminated surface water is pumped to the treatment system, which includes flocculation and filtration steps prior to ozonation. Turbidity, total coliform bacteria, and
E. coli were measured at various stages of water treatment, and bacterial log reduction values (LRVs) were calculated. Results: Forty-seven trials were conducted in which1000L of water were flocculated, filtered, and ozonated for 180 minutes. Baseline turbidity and
E. coli concentrations were reduced from a median of 238 nephelometric turbidity units (NTU) and 2,419.7 most probable number/100mL, respectively, in surface water to 1.0 NTU and undetectable
E. coli after ozonation for 180 minutes. The median
E. coli LRV was 3.99. Conclusions: The solar-powered, decentralized water treatment system that utilizes ozonation for disinfection was founded to reduce
E. coli by more than 3 log-orders of magnitude despite the high turbidity of the raw water. Further research is needed to characterize limitations, scalability, economic viability, and community perspectives that could help determine the role for similar systems in other settings.
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Affiliation(s)
- Colin Hendrickson
- School of Public Health, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Jared Oremo
- Safe Water and AIDS Project (SWAP), Kisumu, 3323-40100, Kenya
| | | | - Simon Bunde
- Safe Water and AIDS Project (SWAP), Kisumu, 3323-40100, Kenya
| | - Isaac Rayola
- Safe Water and AIDS Project (SWAP), Kisumu, 3323-40100, Kenya
| | - David Akello
- Shemjen Engineering, Nairobi, 23697-00100, Kenya
| | | | - Sung-Jin Park
- Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Samuel Dorevitch
- School of Public Health, University of Illinois at Chicago, Chicago, IL, 60612, USA.,Institute for Environmental Science and Policy, University of Illinois at Chicago, Chicago, IL, 60612, USA
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29
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Zheng Q, Aiello A, Choi YS, Tarr K, Shen H, Durkin DP, Shuai D. 3D printed photoreactor with immobilized graphitic carbon nitride: A sustainable platform for solar water purification. JOURNAL OF HAZARDOUS MATERIALS 2020; 399:123097. [PMID: 32540711 DOI: 10.1016/j.jhazmat.2020.123097] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 05/26/2020] [Accepted: 05/30/2020] [Indexed: 06/11/2023]
Abstract
Solar-energy-enabled photocatalysis is promising for sustainable water purification. However, photoreactor design, especially immobilizing nano-sized photocatalysts, remains a major barrier preventing industrial-scale application of photocatalysis. In this study, we immobilized photocatalytic graphitic carbon nitride on chitosan to produce g-C3N4/chitosan hydrogel beads (GCHBs), and evaluated GCHB photoreactivity for degrading phenol and emerging persistent micropollutants in a 3D printed compound parabolic collector (CPC) reactor. The CPC photocatalytic system showed comparable performance with slurry reactors for sulfamethoxazole and carbamazepine degradation under simulated sunlight, and it maintained the performance for contaminant removal in real water samples collected from water/wastewater treatment plants or under outdoor sunlight irradiation. Global drinking water production was estimated for the CPC system, and it holds promise for small-scale sustainable water treatment, including, but not limited to, the production of high-quality potable water for single houses, small communities, rural areas, and areas impacted by natural disasters in both developed and developing countries.
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Affiliation(s)
- Qinmin Zheng
- Department of Civil and Environmental Engineering, The George Washington University, Washington, DC 20052, United States
| | - Ashlee Aiello
- Department of Chemistry, United States Naval Academy, Annapolis, MD 21402, United States
| | - Yoon Sil Choi
- Department of Civil and Environmental Engineering, The George Washington University, Washington, DC 20052, United States
| | - Kayla Tarr
- Department of Civil and Environmental Engineering, The George Washington University, Washington, DC 20052, United States
| | - Hongchen Shen
- Department of Civil and Environmental Engineering, The George Washington University, Washington, DC 20052, United States
| | - David P Durkin
- Department of Chemistry, United States Naval Academy, Annapolis, MD 21402, United States.
| | - Danmeng Shuai
- Department of Civil and Environmental Engineering, The George Washington University, Washington, DC 20052, United States.
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30
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Elnakar H. Disinfection and antimicrobial processes. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2020; 92:1625-1628. [PMID: 32706489 DOI: 10.1002/wer.1409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/11/2020] [Accepted: 07/14/2020] [Indexed: 06/11/2023]
Abstract
This is a review of some of the literature published in 2019 related to disinfection and antimicrobial processes. This review includes the following main sections: drinking water disinfection, wastewater disinfection, and antimicrobial resistance. PRACTITIONER POINTS: Emerging technologies to disinfect viruses in drinking water treatment plants are growing. Developing processes to adequately treat bypass wastewater exceeding the plant's capacity is crucial. Antimicrobial resistance poses a major challenge leading to being classified as emerging pollutants.
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Affiliation(s)
- Haitham Elnakar
- Department of Civil Engineering, University of Calgary, Calgary, Alberta, Canada
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31
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Chen X, Wang Y, Li W, Zhao X, Lu Y, Yu Y, Chen S, Ding Z. Microbial contamination in distributed drinking water purifiers induced by water stagnation. ENVIRONMENTAL RESEARCH 2020; 188:109715. [PMID: 32505883 DOI: 10.1016/j.envres.2020.109715] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 05/19/2020] [Accepted: 05/19/2020] [Indexed: 06/11/2023]
Abstract
Small-scale distributed water purifiers (SSDWPs), providing better quality drinking water, are popularly used both in homes and in the public domain. Non-continuous operation leads to water stagnation and ultimately induces microbial contamination. However, information related to such contamination in these purifiers is reported scarcely. In the present study, an SSDWP, consisting of sand filtration (SF), granular activated carbon (GAC), and ultrafiltration (UF) processes, was established to explore microbial changes induced by water stagnation, based on the aspects of bacterial count, microbial size, microbiome and pathogenic communities. Our results primary showed that: first, compared with drinking water distribution system (DWDS), bacterial counts increased more rapidly in SSDWPs, growing to > 500 cfu/mL after 2.5 h stagnation. The proportion of intact cells also increased with stagnation time. Conversely, microbial size decreased with stagnation time according to changes in forward scatter detected using flow cytometry. Second, microbiome evolution followed the isolated island model, while in stagnated DWDS, microbiome evolved according to the continent island model, and the former had higher abundance of biodiversity. Furthermore, stagnation evidently caused microbiome changes in each unit, and spatial differences contributed to microbiome dissimilarity more significantly than temporal differences. Third, Mycobacterium was the dominant pathogenic genus in the SF and GAC units while Acinetobacter was the most abundant in the UF unit. Pathogenic risks increased with water stagnation time and lower nutrients level contributed to pathogenic community richness. Therefore, terminal disinfection of SSDWPs is strongly advised.
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Affiliation(s)
- Xiao Chen
- College of Defense Engineering, The Army Engineering University of PLA, Nanjing, 210007, China
| | - Yi Wang
- College of Defense Engineering, The Army Engineering University of PLA, Nanjing, 210007, China.
| | - Weiying Li
- State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, China; College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Xiaolan Zhao
- College of Defense Engineering, The Army Engineering University of PLA, Nanjing, 210007, China
| | - Yaofeng Lu
- College of Defense Engineering, The Army Engineering University of PLA, Nanjing, 210007, China
| | - Yingjun Yu
- College of Defense Engineering, The Army Engineering University of PLA, Nanjing, 210007, China
| | - Sheng Chen
- College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Zhibin Ding
- College of Defense Engineering, The Army Engineering University of PLA, Nanjing, 210007, China.
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32
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Zeng Z, Fan Y, Quan X, Yu H, Chen S, Zhang S. Energy-transfer-mediated oxygen activation in carbonyl functionalized carbon nitride nanosheets for high-efficient photocatalytic water disinfection and organic pollutants degradation. WATER RESEARCH 2020; 177:115798. [PMID: 32305702 DOI: 10.1016/j.watres.2020.115798] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 03/14/2020] [Accepted: 04/03/2020] [Indexed: 06/11/2023]
Abstract
Polymeric photocatalysts are promising candidates for water purification, however their catalytic performance are still unsatisfactory due to the fast charge recombination that leads to low reactive oxygen radicals production. In this study, a conceptual energy-transfer-mediated photocatalytic oxygen activation system over polymeric carbon nitride without the need of electron-hole separation is proposed, exhibiting remarkable singlet oxygen triggered bacteria inactivation performance as well as organic pollutants degradation. By structure and excitonic effect modulation, the oxygen activation process changes from the traditional electron-transfer mechanism to the final energy-transfer pathway, leading to the selective generation of singlet oxygen with high efficiency. The generated singlet oxygen is found to fervently attack the bacteria membrane, creating irreparable pores or holes on the cell membrane for cytoplasmic contents leaking out to accelerate bacteria destruction. The work demonstrated here offers a new photocatalytic oxygen activation pathway for achieving high-efficient reactive oxygen species generation performance without the need of charge separation.
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Affiliation(s)
- Zhenxing Zeng
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China
| | - Yaofang Fan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China
| | - Xie Quan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China.
| | - Hongtao Yu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China
| | - Shuo Chen
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China
| | - Shushen Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China
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Hendrickson C, Oremo J, Akello OO, Bunde S, Rayola I, Akello D, Akwiri D, Park SJ, Dorevitch S. Decentralized solar-powered drinking water ozonation in Western Kenya: an evaluation of disinfection efficacy. Gates Open Res 2020; 4:56. [DOI: 10.12688/gatesopenres.13138.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/20/2020] [Indexed: 12/17/2022] Open
Abstract
Background: Decentralized drinking water treatment methods generally apply membrane-based treatment approaches. Ozonation of drinking water, which previously has only been possible at large centralized facilities, can now be accomplished on a small-scale using microplasma technology. The efficacy of decentralized solar-powered ozonation for drinking water treatment is not known. Methods: We established a 1,000L decentralized solar-powered water treatment system located in Kisumu County, Kenya. Highly contaminated surface water is pumped to the treatment system, which includes flocculation and filtration steps prior to ozonation. Turbidity, total coliform bacteria, and E. coli were measured at various stages of water treatment, and bacterial log reduction values (LRVs) were calculated. Results: Nine trials were conducted treating 1000L of water in three hours. Baseline turbidity and E. coli concentrations were reduced from a median of 238 nephelometric turbidity units (NTU) and 2,752 most probable number/100mL, respectively, in surface water to 1.0 NTU and undetectable E. coli per100mL in finished drinking water. The nine trials yielded a mean E. coli LRV of 3.36 (2.71-4.00, 95% CI). Conclusions: Based on the observed reduction of E. coli, the solar-powered system shows promise as a means for producing safe drinking water. Further research is needed to characterize limitations, scalability, economic viability, and community perspectives that could help determine the role for similar systems in other settings.
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Solar Powered Microplasma-Generated Ozone: Assessment of a Novel Point-of-Use Drinking Water Treatment Method. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17061858. [PMID: 32182999 PMCID: PMC7175310 DOI: 10.3390/ijerph17061858] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/03/2020] [Accepted: 03/11/2020] [Indexed: 12/13/2022]
Abstract
Ozonation is widely used in high-income countries for water disinfection in centralized treatment facilities. New microplasma technology has reduced the energy requirements for ozone generation dramatically, such that a 15-watt solar panel is sufficient to produce small quantities of ozone. This technology has not been used previously for point-of-use drinking water treatment. We conducted a series of assessments of this technology, both in the laboratory and in homes of residents of a village in western Kenya, to estimate system efficacy and to determine if the solar-powered point-of-use water ozonation system appears safe and acceptable to end-users. In the laboratory, two hours of point-of-use ozonation reduced E. coli in 120 L of wastewater by a mean (standard deviation) of 2.3 (0.84) log-orders of magnitude and F+ coliphage by 1.54 (0.72). Based on laboratory efficacy, 10 families in Western Kenya used the system to treat 20 L of household stored water for two hours on a daily basis for eight weeks. Household stored water E. coli concentrations of >1000 most probable number (MPN)/100 mL were reduced by 1.56 (0.96) log removal value (LRV). No participants experienced symptoms of respiratory or mucous membrane irritation. Focus group research indicated that families who used the system for eight weeks had very favorable perceptions of the system, in part because it allowed them to charge mobile phones. Drinking water ozonation using microplasma technology may be a sustainable point-of-use treatment method, although system optimization and evaluations in other settings would be needed.
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Xu X, Yang N, Wang P, Wang S, Xiang Y, Zhang X, Ding X, Chen H. Highly Intensified Molecular Oxygen Activation on Bi@Bi 2MoO 6 via a Metallic Bi-Coordinated Facet-Dependent Effect. ACS APPLIED MATERIALS & INTERFACES 2020; 12:1867-1876. [PMID: 31840502 DOI: 10.1021/acsami.9b17623] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Construction of the semimetal/semiconductor composite interface is widely used to promote the O2 molecule adsorption and charge transfer for boosting solar-driven molecular oxygen activation (MOA). Herein, a Bi@Bi2MoO6 heterostructure is fabricated via a two-step wet chemical method as a typical photocatalyst to investigate the underlying mechanism of Bi-coordinated facet-dependent MOA under visible-light illumination. Density functional theory and systematical characterization methods reveal the distinct charge transfer and O2 activation processes on the surface of Bi nanoparticle-deposited Bi2MoO6 nanosheets with different facets exposed. By virtue of a particular and efficient [Bi2O2]2+ → Bi → MoO42- interfacial charge-transfer channel, Bi deposited on the (001) facet of Bi2MoO6 can observably intensify MOA, thereby giving birth to more generation of reactive oxygen species and endowing the Bi@Bi2MoO6 with excellent photocatalytic performance in sodium pentachlorophenate (NaPCP) removal. The decomposition pathway of NaPCP is also proposed based on the intermediate determination and mineralization analysis. This work provides deep insights into the mechanism of facet-dependent MOA over a semimetal-semiconductor system and also sheds light on designing effective molecular oxygen-activated interface for environmental remediation.
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Zha XJ, Zhao X, Pu JH, Tang LS, Ke K, Bao RY, Bai L, Liu ZY, Yang MB, Yang W. Flexible Anti-Biofouling MXene/Cellulose Fibrous Membrane for Sustainable Solar-Driven Water Purification. ACS APPLIED MATERIALS & INTERFACES 2019; 11:36589-36597. [PMID: 31513743 DOI: 10.1021/acsami.9b10606] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Solar-driven interfacial water evaporation is regarded as an effective, renewable, and environment-friendly technology for clean water production. However, biofouling caused by the nonspecific interaction between the steam generator and biofoulants generally hinders the efficient application of wastewater treatment. Herein, this work reports a facile strategy to fabricate flexible anti-biofouling fibrous photothermal membrane consisting of a MXene-coated cellulose membrane for highly efficient solar-driven water steam evaporation toward water purification applications. The as-prepared MXene/cellulose photothermal membrane exhibits light absorption efficiency as high as ∼94% in a wide solar spectrum range and a water evaporation rate up to 1.44 kg m-2 h-1 under one solar illumination. Also, the MXene/cellulose membrane shows very high antibacterial efficiency (above 99.9%) owing to the MXene coating as a highly effective bacteriostatic agent. Such a flexible, anti-biofouling, and high-efficiency photothermal membrane sheds light on practical applications in long-term wastewater treatments.
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Affiliation(s)
- Xiang-Jun Zha
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering , Sichuan University , Chengdu 610065 , Sichuan , China
| | - Xing Zhao
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering , Sichuan University , Chengdu 610065 , Sichuan , China
| | - Jun-Hong Pu
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering , Sichuan University , Chengdu 610065 , Sichuan , China
| | - Li-Sheng Tang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering , Sichuan University , Chengdu 610065 , Sichuan , China
| | - Kai Ke
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering , Sichuan University , Chengdu 610065 , Sichuan , China
| | - Rui-Ying Bao
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering , Sichuan University , Chengdu 610065 , Sichuan , China
| | - Lu Bai
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering , Sichuan University , Chengdu 610065 , Sichuan , China
| | - Zheng-Ying Liu
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering , Sichuan University , Chengdu 610065 , Sichuan , China
| | - Ming-Bo Yang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering , Sichuan University , Chengdu 610065 , Sichuan , China
| | - Wei Yang
- State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering , Sichuan University , Chengdu 610065 , Sichuan , China
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Loeb SK, Kim J, Jiang C, Early LS, Wei H, Li Q, Kim JH. Nanoparticle Enhanced Interfacial Solar Photothermal Water Disinfection Demonstrated in 3-D Printed Flow-Through Reactors. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:7621-7631. [PMID: 31184883 DOI: 10.1021/acs.est.9b01142] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Heat treatment, i.e., boiling or pasteurization, is the most widely recognized and practiced form of household water treatment. Considering recent advances in the development of light harvesting nanoparticles for solar-to-heat conversion, we envision that a nanomaterial enhanced water heating treatment system could obviate the need to use fuels or electricity to heat water by replacing the energy source with sunlight. In this study, we demonstrate that functional disinfection temperatures can be easily achieved with unconcentrated sunlight using a single layer interfacial photothermal film in direct contact with a tortuous flowing water channel. Photothermal films were fabricated by dispersing high concentrations of light harvesting nanoparticles, carbon black and Au nanorods, into a highly transparent curable polymer. Bench-scale 3-D printed reactors were employed to determine the effect of different parameters on reactor performance, such as channel height, retention time, flow rate, initial water temperature, and light intensity. Simulations demonstrate the scalability of the treatment system, predicting that a reactor footprint of 45 × 45 cm would be required for a photothermal treatment system that could produce 8 L of water per day with 8 h of sunlight at 1 Sun intensity.
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Affiliation(s)
- Stephanie K Loeb
- Department of Chemical and Environmental Engineering , Yale University , 17 Hillhouse Ave , New Haven , Connecticut 06511 , United States
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT) , Houston , Texas 77005 , United States
| | - Jun Kim
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT) , Houston , Texas 77005 , United States
- Department of Civil and Environmental Engineering , Rice University , 6100 Main St. , Houston , Texas 77005 , United States
| | - Chenxi Jiang
- Department of Chemical and Environmental Engineering , Yale University , 17 Hillhouse Ave , New Haven , Connecticut 06511 , United States
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT) , Houston , Texas 77005 , United States
| | - Lawrence Stephen Early
- Department of Chemical and Environmental Engineering , Yale University , 17 Hillhouse Ave , New Haven , Connecticut 06511 , United States
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT) , Houston , Texas 77005 , United States
| | - Haoran Wei
- Department of Chemical and Environmental Engineering , Yale University , 17 Hillhouse Ave , New Haven , Connecticut 06511 , United States
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT) , Houston , Texas 77005 , United States
| | - Qilin Li
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT) , Houston , Texas 77005 , United States
- Department of Civil and Environmental Engineering , Rice University , 6100 Main St. , Houston , Texas 77005 , United States
| | - Jae-Hong Kim
- Department of Chemical and Environmental Engineering , Yale University , 17 Hillhouse Ave , New Haven , Connecticut 06511 , United States
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT) , Houston , Texas 77005 , United States
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