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HERO ID
1519065
Reference Type
Journal Article
Title
Optimization of bioleaching conditions for metal removal from CCA-treated wood by using an unknown Polyporales sp. KUC8959
Author(s)
Choi, Y-S; Kim, J-J; Kim, M-J; Son, J; Kim, G-H
Year
2013
Is Peer Reviewed?
Yes
Journal
Journal of Environmental Management
ISSN:
0301-4797
EISSN:
1095-8630
Volume
121
Page Numbers
6-12
Language
English
PMID
23500177
DOI
10.1016/j.jenvman.2013.02.020
Web of Science Id
WOS:000318388400002
Abstract
The purpose of this study was to investigate the effect of extraction conditions (i.e., culture filtrate concentration, extraction temperature, and extraction time) on the removal of metals from chromated copper arsenate (CCA)-treated wood particles by using an unknown Polyporales sp. KUC8959. As the first research, a 20-run central composite design using response surface methodology was applied to optimize the system and construct the models, which predicted metal removal by bioleaching. The coefficients of determination of fitted models were 0.874-0.989, which indicated that the models can predict the metal removal yield accurately under various conditions. The Cu removal model suggested that the following conditions, culture filtrate concentration of 45.8%, extraction temperature of 34.2 °C, and extraction time of 20.6 h, were required for maximal removal of Cu (82.1%). The model predicted that extraction conditions of increased severity would result in complete removal of Cr and As from CCA-treated wood particles. In order to confirm actual metals removal efficiency, metals extraction was subsequently conducted under optimal bioleaching condition evaluated in this study. By applying the model, we demonstrated 83.9% Cu, 96.0% Cr, and 99.3% As removal from treated wood particles.
Keywords
Bioleaching; Oxalic acid; Polyporales; Chromated copper arsenate; Response surface methodology
Tags
IRIS
•
Arsenic Hazard ID
PubMed
Considered New
PubMed
Considered New
WOS
Considered New
2. Lit Search Updates through Oct 2015
PubMed
WOS
Considered
7. Other Studies through Oct 2015
Other
•
Arsenic (Inorganic)
1. Literature
Lit search updates through Oct 2015
3. Hazard ID Screening
Other potentially supporting studies
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