Removal of colorant from simulated wastewater by phyco-composite material: Equilibrium, kinetic and mechanism studies in a lab-scale application
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Date
2016
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Access Rights
info:eu-repo/semantics/closedAccess
Abstract
The biosorption properties of a novel phyco-composite material composed of Spirogyra sp. and Rhizocionium sp. filamentous green algal biomasses for a model colorant (Basic Red 46, Br46) from simulated wastewater were first explored with respect to medium pH, biomaterial quantity, colorant concentration and contact time. The pseudo-second-order model represented the biosorption kinetic data well. Among biosorption isotherm models, Sips model provided the best fit to the equilibrium data. The phyco-composite biosorbent exhibited best performance at pH 9 with maximum biosorption capacity of 55.953 mg g(-1) for Br46. The mean free energy (E) from Dubinin-Radushkevich isotherm equation and the standard Gibbs free energy change (Delta G degrees) revealed a feasible, spontaneous and physical biosorption process. Thus, this novel composite material can be used as a promising biosorbent to remove such unsafe colorants from aqueous media. (C) 2016 Elsevier B.V. All rights reserved.
Description
Keywords
Colorants, Biosorption, Phyco-remediation, Composite biomaterial
Journal or Series
Journal of Molecular Liquids
WoS Q Value
Q1
Scopus Q Value
Q1
Volume
220
