Removal of Arsenic using Low Cost Biosorbent Tamarind Bark

Abstract

The present work focuses the potentiality of agricultural waste, Tamarind bark for removal of arsenic from industry effluent. One parameter model was performed to evaluate time, dosage, concentration of arsenic ion and pH. The process conditions were determined as contact time 50 minutes, dosage 0.85gm, metal ion concentration 0.1g/l and pH was 4.The experimental values are analysed with adsorption isotherms to know the capacity of biosorbent. The data well explained Langmuir model compared to Freundlich model. The mechanism involved in biosorption was tested by using kinetic expressions of first and second order, but the given values are best suited to second order kinetics. The maximum removal of arsenic using low cost biosorbent of tamarind bark was found to be 68%.