Abstract
The purpose of this study was to evaluate the bioremediation of CCA‐treated wood wastes by brown rot fungi, as well as to improve the metal removal from treated wood by altering an existing bioremediation process. In Process I, CCA‐treated wood sawdust was added and bioremediated after accumulating oxalic acid in a fermentation broth. In Process II, simplification of the bioremediation process and improvement of metal removal efficiency were attempted. Thus, the treated sawdust and fungal inocula were simultaneously placed in a fermentation broth. In addition, the efficiency of the fermentation broth containing oxalic acid was compared with that of commercial oxalic acid. The results obtained using Process I showed that the greatest reduction in arsenic and chromium (98% and 91%, respectively) was achieved by an unknown Polyporales species. On the other hand, the most efficient removal of copper (82%) was achieved by Daedalea dickinsii, which had the lowest oxalic acid production. Using Process II, the highest copper, chromium and arsenic removal rates (96%, 92% and 98%, respectively) were obtained by Fomitopsis palustris. Process II could be a very valuable method for metal removal from CCA‐treated wood when F. palustris is used. Our results also suggest that oxalic acid produced from fungus can be used as an alternative to commercial oxalic acid.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
