Bioremediation of CCA-treated wood by brown-rot fungi Fomitopsis palustris, Coniophora puteana, and Laetiporus sulphureus

S Nami Kartal; Munir Erman; Kakitani Tomo; Imamura Yuji

doi:10.1007/s10086-003-0544-8

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Bioremediation of CCA-treated wood by brown-rot fungi Fomitopsis palustris, Coniophora puteana, and Laetiporus sulphureus

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Bioremediation of CCA-treated wood by brown-rot fungi Fomitopsis palustris, Coniophora puteana, and Laetiporus sulphureus

S Nami Kartal, Munir Erman, Kakitani Tomo and Imamura Yuji

Journal of Wood Science, Vol.50, pp.182-188

2004

DOI: https://doi.org/10.1007/s10086-003-0544-8

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Abstract

oxalic acid

bioredemidation

CCA wood preservative

treated waste wood

Fomitopsis palustris

Coniophora puteana

Laetiporus sulphureus

This study evaluated oxalic acid accumulation and bioremediation of chromated copper arsenate (CCA)-treated wood by three brown-rot fungi Fomitopsis palustris, Coniophora puteana, and Laetiporus sulphureus. The fungi were first cultivated in a fermentation broth to accumulate oxalic acid. Bioremediation of CCA-treated wood was then carried out by leaching of heavy metals with oxalic acid over a 10-day fermentation period. Higher amounts of oxalic acid were produced by F. palustris and L. sulphureus compared with C. puteana. After 10-day fermentation, oxalic acid accumulation reached 4.2 g/l and 3.2 g/l for these fungi, respectively. Fomitopsis palustris and L. sulphureus exposed to CCA-treated sawdust for 10 days showed a decrease in arsenic of 100% and 85%, respectively; however, C. puteana remediation removed only 18% arsenic from CCA-treated sawdust. Likewise, chromium removal in F. palustris and L. sulphureus remediation processes was higher than those for C. puteana. This was attributed to low oxalic acid accumulation. These results suggest that F. palustris and L. sulphureus remediation processes can remove inorganic metal compounds via oxalic acid production by increasing the acidity of the substrate and increasing the solubility of the metals.

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Title: Bioremediation of CCA-treated wood by brown-rot fungi Fomitopsis palustris, Coniophora puteana, and Laetiporus sulphureus
Authors: S Nami Kartal (Corresponding Author) - Istanbul University
Munir Erman (Author) - University of North Sumatra
Kakitani Tomo (Author) - Sumitoto Forestry Co Ltd
Imamura Yuji (Author) - Kyoto University
Publication details: Journal of Wood Science, Vol.50, pp.182-188
Publisher: Springer Japan KK
Date published: 2004
DOI: 10.1007/s10086-003-0544-8
ISSN: 1611-4663
Organisation Unit: National Centre for Timber Durability and Design Life
Language: English
Record Identifier: 99979643502621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Forestry; Materials Science, Paper & Wood