Biosorption of arsenite (As+3) and arsenate (As+5) from aqueous solution by Arthrobacter sp. biomass
作者： Kumar Suranjit Prasad , A. L. Ramanathan , Jaishree Paul , Vaidyanathan Subramanian , Ram Prasad
DOI: 10.1080/09593330.2013.786137
关键词:
摘要: In this study we investigated the role of arsenic-resistant bacteria Arthrobacter sp. biomass for removal arsenite as well arsenate from aqueous solution. The sorption characteristics were studied a function dose, contact time and pH. Langmuir, Freundlich Dubinin-Radushkevich (D-R) models applied to describe biosorption isotherm. Langmuir model fitted equilibrium data better than capacity As+3 As+5 was found be 74.91 mg/g (pH 7.0) 81.63 mg/g 3.0), respectively using 1 g/L with 30 min at 28°C. mean energy values calculated D-R indicated that onto took place by chemical ion-exchange. thermodynamic parameters showed ions feasible, spontaneous exothermic in nature. Kinetic evaluation experimental...
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