Faculty of Biology, University of Latvia
EEB
Hard copy: ISSN 1691–8088
On-line: ISSN 2255–9582
Environ Exp Biol (2017) 15: 233–238
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Environmental and
Experimental
Biology

Environ Exp Biol (2017) 15: 233–238

Orginal Paper

Potential of Humicola phialophoroides biomass for zinc (II) removal from aqueous solution

Tinnapan Netpae*
Environmental Science Program, Faculty of Science and Technology, Nakhon Sawan Rajabhat University, Thailand
* Corresponding author, E-mail: tinnapan.n@nsru.ac.th

Abstract

The purpose of this research was to estimate the Zn2+ biosorption by biomass of Humicola phialophoroides fungus isolated from creek sediments in a zinc mine area in Thailand. The Langmuir isotherm model gave a better fit for the result data more than Freundlich, Temkin and Dubinin-Radushkevich isotherm models. Zn2+ removal ability in all H. phialophoroides biomass types as increasing Zn2+ concentration had the same pattern, but biomass pretreated by NaOH showed better Zn2+ removal ability than viable biomass, non-viable biomass, and HNO3 pretreated biomass. Maximum Zn2+ biosorption of biomass pretreated with NaOH took place at initial solution at pH 8 after 150 min. In addition, Zn2+ was well adsorped by NaOH pretreated biomass at temperature higher than 70°C, while desorption experiments indicated that the desorption efficiency with 0.1 M HNO3 solution reached 92.31%.

Key words: biosorption, Humicola phialophoroides, pretreated biomass, Zn2+.

 
Environ Exp Biol (2017) 15: 233–238
 DOI: http://doi.org/10.22364/eeb.10.22364/eeb.15.24
EEB

Editor-in-Chief
Prof. Gederts Ievinsh



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University of Latvia

 
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