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Application of Plant-Based Coagulants and Their Mechanisms in water treatment:A Review

Journal of Renewable Materials 2024年第4期12卷 667-698页

作者： Abderrezzaq Benalia Kerroum Derbal Zahra Amrouci Ouiem Baatache Amel Khalfaoui Antonio Pizzi Higher Normal School of Constantine Ali Mendjeli Nouvelle VilleConstantine25000Algeria Laboratory of Process Engineering for Sustainable Development and Health Products(GPDDPS) Department of Process EngineeringNational Polytechnic School of ConstantineConstantine25000Algeria Department of Environmental Engineering Laboratoire de Recherche sur le Médicament et le Développement Durable(ReMeDD)University of Salah Boubnider Constantine 3El Khroub25012Algeria Laboratory LIPE Faculty Process EngineeringUniversity of Constantine 3Ali Mendjeli Nouvelle VilleConstantine25000Algeria Laboratoire d’Etude et Recherche sur le Matériau Bois(LERMAB).Ecole Nationale Supérieure des Technologies et Industries du Bois(ENSTIB)—University of Lorraine Epinal88000France

This review describes the mechanisms of natural *** provides a good understanding of the two key processes of coagulation-flocculation:adsorption and charge neutralization,as well as adsorption and *** factors have influence the coagulation/flocculation process,including the effect of pH,coagulant dosage,coagulant type,temperature,initial turbidity,coagulation speed,flocculation speed,coagulation and flocculation time,settling time,colloidal particles,zeta potential,the effects of humic acids,and extraction density are *** bio-coagulants derived from plants are *** impact of organic coagulants on water quality,focusing on their effects on the physicochemical parameters of water,heavy metals removal,and bacteriological water quality,is *** methods of extraction and purification of plant-based coagulants,highlighting techniques such as solvent extraction and ultrasonic extraction,are *** also examines the parameters that influence these *** methods and principles of purification of coagulating agents,including dialysis,freeze-drying,ion exchange,electrophoresis,filtration,and centrifugation,are ***,it evaluates the sustainability of natural coagulants,focusing on the environmental,technical,and economic aspects of their *** the end of this review,the readers should have a comprehensive understanding of the mechanisms,selection,extraction,purification,and sustainability of plant-based natural coagulants in water treatment.

关键词： Bio-coagulants coagulating agents extraction water treatment

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Atomic regulations of single atom from metal-organic framework derived carbon for advanced water treatment

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Nano Research 2023年第7期16卷 10326-10341页

作者： Xiang Li Bo Wang Key Laboratory of Cluster Science Ministry of Education Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion MaterialsAdvanced Technologies Research Institute(Jinan)Advanced Research Institute of Multidisciplinary ScienceSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyNo.5South StreetZhongguancunHaidian DistrictBeijing 100081China

Single atom(SA)-embedded nitrogen-doped carbon has shown great potential in environmental ***,engineered nanomaterials(ENMs)have attracted great research interests in recent ***-organic framework(MOF)derived SAs show the advantages of tunable topology and averaged separated active *** bridge the gap between homogeneous and heterogeneous *** reaction efficiency can be significantly improved by designing the MOFs derived from carbon and *** this review,the research advanced in MOFs-derived carbon and SAs in advanced oxidation process(AOP)in water were *** strategies to fabricate the SAs derived from MOFs were discussed,including the mixed/single metal strategy,metal-containing linker strategy,pore confinement strategy,thermal diffusion strategy,and pyrolysis MOFs with bulk *** characterization technologies have been introduced,including electron microscopy and spectroscopic *** explain the catalytic mechanism for various applications,the relationship between the performance and the atomic configuration was systematically *** applications of the MOFs derived from carbon and SAs have been summarized.A series of the latest work on effectively removing pollutants by SAs are also *** on the fundamental knowledge and recent practical application of MOFs-derived carbon and SAs,some perspectives on the further directions were *** review offers guidance for applying novel engineered nanomaterials in the water treatment field.

关键词： single-atom catalysts(SACs) engineered nanomaterials(ENMs) metal-organic framework(MOF) MOFs derived carbon water treatment

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Self-powered electrochemical water treatment system for pollutant degradation and bacterial inactivation based on high-efficient Co(OH)_(2)/Pt electrocatalyst

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Nano Research 2023年第2期16卷 2192-2198页

作者： Zhuo Wang Xi Liang Zhirong Liu Tian Huang Shaobo Wang Shuncheng Yao Yiming Ding Jiaming Zhang Xingyi Wan Zhong Lin Wang Linlin Li Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China Center on Nanoenergy Research School of physical Science and TechnologyGuangxi UniversityNanning 530004China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332-0245USA

Electrochemical system with electro-Fenton reaction is an effective pathway for oxidative degradation of refractory organic pollutants for water ***,the method is limited by the low catalytic efficiency and high electrical cost in practical *** work presents a self-powered and high-efficient electrochemical system for water treatment including pollutant degradation and bacterial inactivation,which is composed of a self-powered triboelectric nanogenerator(TENG)converting mechanical energy into electrical energy,a power management circuit integrated with a supercapacitor to store the harvesting electrical energy temporarily,and an electrochemical setup integrated with two-dimentional Co(OH)_(2)/Pt nanosheet as *** nanocatalyst,ultrafine Pt nanoparticles(Pt NPs)loaded on Co(OH)_(2) nanosheet(Co(OH)_(2)/Pt),is synthesized by a facile one step hydrothermal reaction without any surfactant,which can improve H_(2)O_(2)and hydroxyl radical production via redox *** self-powered electrocatalytic system is able to degrade nearly 100%of organic pollutant within 100 min,and efficiently kill *** work shows great potential to develop high-efficient and self-powered electrochemical water treatment system through integrating TENG and nanocatalyst.

关键词： triboelectric nanogenerator electro-catalysis self-powered water treatment nanocatalyst

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Advances in graphene oxide membranes for water treatment

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Nano Research 2022年第7期15卷 6636-6654页

作者： Fengchun Jia Xiao Xiao Ardo Nashalian Sophin Shen Liu Yang Zhenyang Han Huaijiao Qu Tianmei Wang Zhi Ye Zhijun Zhu Linjun Huang Yanxin Wang Jianguo Tang Jun Chen Institute of Hybrid Materials National Center of International Research for Hybrid Materials TechnologyNational Base of International Science&Technology CooperationCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071China Department of Bioengineering University of CaliforniaLos AngelesCalifornia 90095USA

Graphene oxide(GO),a derivative of graphene,is a novel carbon material that has attracted a lot of attention in the field of membrane materials as its ability to achieve layer-by-layer stacking and the formation of nanochannels between the lamellae makes it excellent for selective separation of *** this paper,the separation mechanism of the GO membrane is *** to the different separation substances,the separation mechanism of graphene oxide membrane is reviewed from two aspects of metal ions and organic ***,the preparation methods of graphene oxide membranes is introduced,such as spin-coating,vacuum filtration,dip-coating,spraying,and layer-by-layer self-assembly,followed by a review on the structural regulation of ***,this paper concludes with an overview of the potential development prospects and challenges of GO membranes.

关键词： graphene oxide membrane technology structural modulation separation mechanism water treatment

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Recent progress of covalent organic frameworks membranes:Design,synthesis,and application in water treatment

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Eco-Environment & Health 2023年第3期2卷 117-130页

作者： Xiaolu Liu Yang Li Zhongshan Chen Hui Yang Suhua Wang Zhenwu Tang Xiangke Wang MOE Key Laboratory of Resources and Environmental System Optimization College of Environmental Science and EngineeringNorth China Electric Power UniversityBeijing 102206China School of Environmental Science and Engineering Guangdong University of Petrochemical TechnologyMaoming 525000China College of Life and Environmental Sciences Minzu University of ChinaBeijing 100081China

To date,significant efforts have been devoted to eliminating hazardous components to purify wastewater through the development of various *** organic frameworks(COFs),an important branch of the porous crystalline family,possess the peculiarity of ultrahigh surface area,adjustable pore size,and facile *** studies from design fabrication to potential applications in water treatment by COF-based membranes(COMs)have *** review summarizes various preparation strategies and synthesis mechanisms for COMs,including layer-by-layer stacking,in situ growth,interfacial polymerization,and electrochemical synthesis,and briefly describes the advanced characterization techniques for ***,the application of COMs in heavy metal removal,dye separation,purification of radionuclides,pollutant detection,sea water desalination,and so on,is described and ***,the perspectives on future opportunities for designing COMs in water purification have been proposed.

关键词： Covalent organic frameworks Covalent organic frameworks membranes Preparation strategies Characterization techniques water treatment

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Application potential of carbon nanotubes in water treatment:A review

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Journal of Environmental Sciences 2013年第7期25卷 1263-1280页

作者： Xitong Liu Mengshu Wang Shujuan Zhang Bingcai Pan State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing University

water treatment is the key to coping with the conflict between people＇s increasing demand for water and the world-wide water shortage. Owing to their unique and tunable structural, physical, and chemical properties, carbon nanotubes （CNTs） have exhibited great potentials in water treatment. This review makes an attempt to provide an overview of potential solutions to various environmental challenges by using CNTs as adsorbents, catalysts or catalyst support, membranes, and electrodes. The merits of incorporating CNT to conventional water-treatment material are emphasized, and the remaining challenges are discussed.

关键词： carbon nanotube adsorption catalysis membrane water treatment

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Characteristics of Electrode-water-Electrode Discharge and its Application to water treatment

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Plasma Science and Technology 2014年第5期16卷 479-485页

作者：王小平李中坚张兴旺雷乐成 Key Laboratory of Biomass Chemical Engineering of Ministry of Education Department of Chemical and Biological EngineeringZhejiang University

Atmospheric air discharge above the surface of water is an effective method for water *** leakage current and Joule heating of water are reduced by the air gap,which raises the energy efficiency of the water ***,the application of this kind of discharge is limited by a pair of conflicting factors：the chemical efficiency grows as the discharge gap distance decreases,while the spark breakdown voltage decreases as the gap distance *** raise the spark breakdown voltage and the chemical efficiency of atmospheric pressure water surface discharge,both the high-voltage electrode and the ground electrode are suspended above the water surface to form an electrode-water-electrode discharge *** this system,there are two potential discharge directions：from one electrode to another directly,and from the electrodes to the water *** first step in utilizing the electrode-water-electrode discharge is to find out the discharge direction transition *** this paper,the discharge direction transition criterions of spark discharge and streamer discharge are *** comparing the discharge characteristics and the chemical efficiencies,the discharge propagating from the electrodes to the water surface is proved to be more suitable for water treatment than that propagating directly between the electrodes.

关键词： water treatment electrode-water-electrode discharge discharge direction discharge intensity chemical efficiency

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Three-Dimensional Hierarchical Structures of ZnO Nanorods as a Structure Adsorbent for water treatment

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Journal of Materials Science & Technology 2017年第8期33卷 864-868页

作者： Zhendong Li Yingjie Huang Xingfu Wang Dan Wang Xinfu Wang Fusheng Han Key Laboratory of Materials Physics Institute of Solid State PhysicsChinese Academy of SciencesHefei 230031China

Three-dimensional（3D） ZnO nanorods with good adsorption property was successfully fabricated via a facile hydrothermal method, and characterized by scanning electron microscopy（SEM）, X-ray diffraction（XRD）, Energy Dispersive X-ray spectrometer（EDX） and a UV-vis spectrophotometer. It was found that the ZnO nanorods with a diameter of 0.5 μm and the length of 10 μm were firmly grown on the struts of the open-cell aluminum foams, and the 3D hierarchical structured adsorbent Zn O nanorods/Al foam（r-ZnO/AF） exhibits a higher adsorption capacity for Brilliant Blue R（BBR） in aqueous solutions, more stable sorption regenerable behavior and solid–liquid separability in contrast to the corresponding n-ZnO powder sample. The kinetics of the adsorption process was also discussed.

关键词： Structured adsorbent Open-cell aluminum foam Zinc oxide water treatment

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Catalytic Effect of Activated Carbon and Activated Carbon Fiber in Non-Equilibrium Plasma-Based water treatment

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Plasma Science and Technology 2008年第3期10卷 358-362页

作者：张延宗郑经堂曲险峰于维钊陈宏刚 State Key Laboratory of Heavy Oil Processing China University of PetroleumDongying 257061 China

Catalysis and regeneration efficiency of granular activated carbon （GAC） and activated carbon fiber （ACF） were investigated in a non-equilibrium plasma water treatment reactor with a combination of pulsed streamer discharge and GAC or ACF. The experimental results show that the degradation efficiency of methyl orange （MO） by the combined treatment can increase 22% （for GAC） and 24% （for ACF） respectively compared to pulsed discharge treatment alone, indicating that the combined treatment has a synergetic effect. The MO degradation efficiency by the combined treatment with pulsed discharge and saturated GAC or ACF can increase 12% and 17% respectively compared to pulsed discharge treatment alone. Both GAC and ACF show catalysis and the catalysis of ACF is prominent. Meanwhile, the regeneration of GAC and ACF are realized in this process. When H202 is introduced into the system, the utilization efficiency of ozone and ultraviolet light is improved and the regeneration efficiency of GAC and ACF is also increased.

关键词： non-equilibrium plasma water treatment activated carbon activated carbon fiber catalytic effect

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Review on research and application of mesoporous transitional metal oxides in water treatment

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Frontiers of Environmental Science & Engineering 2013年第6期7卷 795-802页

作者： Minghao SUI Lei SHE State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and Engineering Tongji University Shanghai 200092 China

This paper reviews the application of meso- porous transitional metal oxides in water treatment on basis of the catalysis and adsorption. Mesoporous transitional metal oxides are characterized by their intrinsic features, such as a high surface area, a highly ordered array of unidimensional pores with a very narrow pore size distribution, and highly dispersed active sites. Finally, the suggestions of further study on application are proposed.

关键词： mesoporous materials transitional metal oxi-des catalysis adsorption water treatment

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