Development of sustainable magnetic chitosan biosorbent beads for kinetic remediation of arsenic contaminated water.

Abstract:

:We report the preparation of both control chitosan and magnetic chitosan beads as biosorbents using chitosan as matrix and magnetite (Fe3O4) nanoparticles as reinforcement followed by detailed advanced characterization. The batch trials were performed to study the adsorption kinetics of biosorbents by removing As(III) and As(V) species from water systems. The experimental data was inserted into Langmuir and Freundlich's isotherms to undertake the mechanism and adsorption capacity of the test biosorbents. Under Langmuir's isotherm, maximum monolayer adsorption capacity (qmax) of the biosorbent was observed to be 73.69 and 79.49 mg/g for As(III) and As(V) species, respectively, under specified conditions. The optimum doses of 1.5 and 2 g/L of MCBB at pH 6.7 showed 99.5 and 99% removal of As(V) and As(III), respectively. The analysis demonstrated that the biosorption process obeyed pseudo 2nd order kinetics with linear regression coefficient (R2) of >0.999. The regeneration and reusability of biosorbents were also assessed.

journal_name

Int J Biol Macromol

authors

Ayub A,Raza ZA,Majeed MI,Tariq MR,Irfan A

doi

10.1016/j.ijbiomac.2020.06.287

subject

Has Abstract

pub_date

2020-11-15 00:00:00

pages

603-617

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(20)33740-5

journal_volume

163

pub_type

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