Facile synthesis of yeast cross-linked Fe3O4nanoadsorbents for efficient removal of aquatic environment contaminated with As(V).
A facile solvothermal method was adopted to prepare monodispersed surface functionalized Fe3O4nanoparticles via self assembly process. The pure yeast, diethylamine functionalized Fe3O4nanoparticles (DMNPs) and yeast cross-linked Fe3O4nanoparticles (YcMNPs) were used for the efficient removal of arsenate from aqueous solution. The crystal structure, morphology and magnetic properties of these nanoparticles were characterized by using X-ray diffraction, field emission scanning electron microscopy and vibrating sample magnetometer. The observed physico-chemical properties confirms the metal binding nature of prepared samples. The adsorption of As(V) on the functionalized magnetite nanoparticles was tested under different operating conditions like contact time, adsorbate dosage, adsorbate concentration and pH. The faster removal of As(V) was obtained using YcMNPs (99%) than DMNPs and pure yeast. The adsorption equilibrium data obeys Langmuir isotherm than Freundlich model and the kinetics data well depicts the pseudo-second-order model. The batch column experiment confirms the adequate desorption as well as reusability without significant loss of efficiency. The results reveal the technical feasibility of the prepared nanoparticles for their easy synthesis, recovery, cost effective, eco-friendly and a promising advanced adsorbent for environmental pollution.
Department of Nanoscience and Technology, Bharathiar University, Coimbatore 641 046, India.
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Rajesh Kumar
Department of Microbial Biotechnology, School of Biotechnology and Genetic Engineering, Bharathiar University, Coimbatore 641 046, India.
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Jayavignesh
Nanobiotechnology Laboratory, PSG Institute of Advanced Studies, Coimbatore 641 004, India.
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Selvakumar
Department of Microbial Biotechnology, School of Biotechnology and Genetic Engineering, Bharathiar University, Coimbatore 641 046, India.
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Swaminathan
Department of Nanoscience and Technology, Bharathiar University, Coimbatore 641 046, India. Electronic address: ponpandian@buc.edu.in.
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Ponpandian
D000327:Adsorption; D001151:Arsenic / Q000302:isolation & purification*; D052203:Ferrosoferric Oxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D012441:Saccharomyces cerevisiae / Q000737:chemistry*; D012623:Seawater / Q000737:chemistry; D013816:Thermodynamics; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods
D058185:Magnetite Nanoparticles; D014874:Water Pollutants, Chemical; D001151:Arsenic; D052203:Ferrosoferric Oxide
Arsenate adsorption; Cabbage shapes; Magnetite; Water treatment; Yeast cells