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Biodegradation of phenol by immobilized Trichosporon cutaneum R57 on modified polymer membranes

Paper ID Volume ID Publish Year Pages File Format Full-Text
36119 45121 2006 5 PDF Available
Title
Biodegradation of phenol by immobilized Trichosporon cutaneum R57 on modified polymer membranes
Abstract

Covalent immobilization of Trichosporon cutaneum R57 cells was conducted onto PA and PAN membranes with glutaraldehyde as a coupling agent. Amount of immobilized cells was determined: for polyamide—1.4 mg cm−2 and for polyacrylonitrile—1.8 mg cm−2 (dry weight). The efficiency of each immobilized system was evaluated by the extent of phenol biodegradation (1.0 g l−1). Polyacrylonitrile-immobilized system completed the process for 45 h, whereas polyamide-immobilized system for 51 h. During the six next cycles the complete biodegradation time for polyacrylonitrile-immobilized system was reduced at 24, 18 and 15 h for III, V, VII cycles, respectively. The biodegradation time at eighth cycle was prolonged (42 h) and this is probably due to substrate diffusion limitations to the local accumulation of microbial cells on the membrane surface and cause cell death. Comparing the SEM of immobilized microbial cells on polyacrylonitrile membrane before the first cycle and after the eight cycle could be seen that great amount of immobilized cells are accumulated on the membrane surface during the seven biodegradation cycles.

Keywords
Biodegradation; Phenol; Trichosporon cutaneum R57; Immobilized cells; Polymer membranes
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Biodegradation of phenol by immobilized Trichosporon cutaneum R57 on modified polymer membranes
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 11, November 2006, Pages 2342–2346
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us