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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472
EISSN: 1735-2630
Vol. 12, No. 1, 2015, pp. 247-254
Bioline Code: st15022
Full paper language: English
Document type: Research Article
Document available free of charge

International Journal of Environment Science and Technology, Vol. 12, No. 1, 2015, pp. 247-254

 en Formaldehyde degradation by a newly isolated fungus Aspergillus check for this species in other resources sp. HUA
Yu, D.S.; Song, G.; Song, L.L.; Wang, W. & Guo, C.H.

Abstract

Formaldehyde is widely used in chemical manufacturing industry and classified as a human carcinogen. Discharging wastewater containing formaldehyde without treatment can cause serious risk to the water environment. In this study, a formaldehyde-resistant fungal strain was isolated from sewerage of a furniture factory. Isolate strain was identified based on the morphological and phylogenetic analyses. Formaldehyde-degrading fungus was determined by characterizing the mycelia growth in culture media, formaldehyde-resistant, formaldehydedegrading efficiencies, and specific enzyme activity involved in formaldehyde removal. Isolate strain HUA was identified as a member of Aspergillus sydowii check for this species in other resources . The strain HUA showed a growth in the presence of formaldehyde up to 2,400 mg l-1 at an optimum temperature of 25 °C and optimum pH of 7. The specific activity of formaldehyde dehydrogenase and formate dehydrogenase could reach up to 5.02 and 1.06 U mg-1, respectively. It indicated that isolated formaldehyde-resistant A. sydowii HUA strain would be potential used for removing formaldehyde from industrial wastewater.

Keywords
Biodegradation; Formaldehyde; Formaldehyde-degrading fungus; Aspergillus sydowii; Wastewater

 
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