Aerobic degradation of diethyl phthalate by Sphingomonas sp.
An aerobic diethyl phthalate (DEP) degrading bacterium, DEP-AD1, was isolated from activated sludge. Based on its 16S rDNA sequence, this isolate was identified belonging to Sphingomonas genus with 99% similarity to Sphingomonas sp. strain C28242 and 98% similarity to S. capsulate. The specific degradation rate of DEP was concentration dependent with a maximum of 14 mg-DEP/(Lh). Results of degradation tests showed that DEP-AD1 could also degrade monoethyl phthalate (MEP), dimethyl phthalate (DMP), dibutyl phthalate (DBP), and diethylhexyl phthalate (DEHP), but not phthalate and benzoate.
Fang
Herbert H P
HH
Environmental Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China. hrechef@hkucc.hku.hk
Liang
Dawei
D
Zhang
Tong
T
D000332:Aerobiosis; D019149:Bioreactors; D010795:Phthalic Acids / Q000378:metabolism*; D010802:Phylogeny; D012722:Sewage; D020578:Sphingomonas / Q000145:classification / Q000235:genetics / Q000378:metabolism*
D010795:Phthalic Acids; D012722:Sewage; C007379:diethyl phthalate