Fungal bioremediation of creosote-treated wood: a laboratory scale study on creosote components degradation by Pleurotus ostreatus mycelium.
A bioremediation system for creosote-treated wood is proposed, based on the detoxifying capability of Pleurotus ostreatus, a ligninolythic fungus. Non-sterilized chipped contaminated wood was mixed at various ratios with wheat straw on which Pleurotus mycelia was grown. At 1:2 initial ratio contaminated wood:wheat straw, chemical analyses demonstrated an almost complete degradation of creosote oil components after 44 days, also confirmed by a significant reduction of ecotoxicity. Lower ratios, i.e. higher amount of contaminated wood, lower system efficiency, although a better creosote degradation was obtained by a stepped up wood addition.
Polcaro
C M
CM
Institute of Chemical Methodologies of National Research Council, Rome 1 Research Area, Monterotondo Scalo, Rome, Italy. chiara.polcaro@imc.cnr.it
Brancaleoni
E
E
Donati
E
E
Frattoni
M
M
Galli
E
E
Migliore
L
L
Rapanà
P
P
D000465:Algorithms; D000818:Animals; D001673:Biodegradation, Environmental; D002273:Carcinogens / Q000032:analysis; D003407:Creosote / Q000737:chemistry*; D003621:Daphnia; D052918:Environmental Restoration and Remediation; D008401:Gas Chromatography-Mass Spectrometry; D025282:Mycelium / Q000737:chemistry / Q000378:metabolism; D010084:Oxidation-Reduction; D020076:Pleurotus / Q000737:chemistry*; D014934:Wood / Q000032:analysis*
D002273:Carcinogens; D003407:Creosote