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KMID : 0545120040140051009
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Journal of Microbiology and Biotechnology
2004 Volume.14 No. 5 p.1009 ~ p.1013
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Polyvinyl Alcohol Degradation by Microbacterium barkeri KCCM 10507 and Paenibacillus amylolyticus KCCM 10508 in Dyeing Wastewater
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Choi KK
Park CH/Kim SY/Lyoo WS/Lee SH/Lee JW
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Abstract
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The purpose of this study was to investigate the degradation of PVA (polyvinyl alcohol) contained in dyeing wastewater by a mixed culture of Microbacterium barkeri KCCM 10507 and Paenibacillus amylolyticus KCCM 10508. Firstly synthetic wastewater which contained different initial concentrations of PVA varying from 50 to 3500 mg/l were tested to obtain optimal PVA biodegradation activity of isolated strains and the above two strains were found to degrade PVA up to 90% when the initial concentration of PVA was 750 mg/l and below. Next dyeing wastewater was tested by a mixed culture of the two isolated strains and 42% and 55% of the initial concentrations of PVA and COD respectively was removed after five days. MLSS was gradually increased from an initial 1400 to 2500 mg/l and the pH was also increased from 5.1 to 7.8. Sterilized dyeing wastewater was tested to find the effect of strains only on the biodegradation of PVA and PVA degradation ratio and COD removal ratio were 50% and 72.8% respectively. Thus the results indicated that these two strains have good ability to degrade PVA and remove COD in dyeing wastewater. Finally it is expected that if these two strains were used in the dyeing wastewater treatment good efficiency for PVA degradation and COD removal could be achieved.
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