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Biodegradability of diethylene glycol terephthalate and poly(ethylene terephthalate) fiber by crude enzymes extracted from activated sludge
Author(s) -
Zhang Jianfei,
Gong Jixian,
Shao Gaiqin,
Qin Jijie,
Gu Zhenya
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.22239
Subject(s) - biodegradation , diethylene glycol , ethylene glycol , materials science , lipase , degradation (telecommunications) , fiber , ethylene , polyester , activated sludge , organic chemistry , chemistry , enzyme , waste management , composite material , sewage treatment , catalysis , engineering , telecommunications , computer science
In this study, diethylene glycol terephthalate (DTP) and poly(ethylene terephthalate) (PET) fiber were degraded by crude enzymes extracted from a strain that was isolated from activated sludge obtained from factories. The feasibility of the biodegradation of the PET fiber is discussed through the rule of the biodegradation of DTP, which was used as the simulacrum of the biodegradation of the PET fiber. We concluded that the proper conditions for the degradation of DTP with the crude enzyme were 30°C and a medium pH. Through the degradation kinetics, we determined that the crude enzyme was more capable of degrading DTP than was lipase. In addition, the crude enzyme also degraded the PET fibers. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 3855–3859, 2006