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Characterization and physicochemical aspects of novel cellulose-based layered double hydroxide nanocomposite for removal of antimony and fluoride from aqueous solution

引用

Journal of Environmental Sciences 2021年第4期33卷 301-315页

作者： Hanen Bessaies Sidra Iftekhar Muhammad Bilal Asif Jamel Kheriji chaker necibi Mika Sillanpää Bechir Hamrouni Laboratory of Desalination and Water Treatment LR19ES01 Faculty of Sciences of TunisTunis El Manar UniversityEl Manar I 2092Tunisia Department of Environmental Engineering University of Engineering and Technology TaxilaTaxila 47050Pakistan Department of Applied Physics University of Eastern FinlandKuopio 70210Finland A lnstitute of Environmental Engineering and Nano-Technology Tsinghua Shezhen International Graduate SchoolTsinghua UniversityShenzhen 518055China International Water Research Institute Mohammed VI Polythechnic UniversityGreen City Ben Guerir 43150Morocco Institute of Research and Development Duy Tan UniversityDa Nang 550000Vietnam Faculty of Environment and Chemical Engineering Duy Tan UniversityDa Nang 550000Vietnam School of Civil Engineering and Surveying Faculty of HealthEngineering and SciencesUniversity of Southern QueenslandWest StreetToowoombaQLD 4350Australia Department of Chemical Engineering School of MiningMetallurgy and Chemical EngineeringUniversity of JohannesburgDoornfontein 2028South Africa

A series of novel adsorbents composed of cellulose(CL)with Ca/Al layered double hydroxide(CC_(x)A;where x represent the Ca/Al molar ratio)were prepared for the adsorption of antimony(Sb(V))and fluoride(F^(-))ions from aqueous *** CC_(x)A was characterized by Fourier-transform infrared spectroscopy(FTIR),Brunauer–Emmett–Teller(BET),elemental analysis(CHNS/O),thermogravimetric analysis(TGA-DTA),zeta potential,X-ray photoelectron spectroscopy(XPS)and scanning electron microscopy with energy dispersive Xray spectroscopy(SEM-EDX)*** effects of varying parameters such as dose,pH,contact time,temperature and initial concentration on the adsorption process were *** to the obtained results,the adsorption processes were described by a pseudo-second-order kinetic *** adsorption isotherm model provided the best fit for the experimental data and was used to describe isotherm *** maximum adsorption capacity was found to be 77.2 and 63.1 mg/g for Sb(V)and F^(-),respectively by CC_(3)A(experimental conditions:pH 5.5,time 60 min,dose 15 mg/10 mL,temperature 298 K).The CC_(3)A nanocomposite was able to reduce the Sb(V)and F^(-)ions concentration in synthetic solution to lower than 6μg/L and 1.5 mg/L,respectively,which are maximum contaminant levels of these elements in drinking water according to WHO guidelines.

关键词： Layered double hydroxide Adsorption Antimony removal Fluoride removal Kinetics

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