Degradation of Polyvinyl Alcohol by a Mixed Culture Isolated from Paper Mill Treatment

Authors : Demet ÇETİN, Sumru ÇITAK

Pages : 839-845

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Publication Date : 2014-06-27

Article Type : Other Papers

Abstract :Mixed microbial culture from paper mill treatment system was enriched on polyvinyl alcohol insert ignore into journalissuearticles values(PVA); medium and its PVA biodegradation capacity was investigated as a function of change in the initial pH values and PVA concentrations. The optimum pH value at 0.75 g l -1 initial PVA concentration was determined to be 8. PVA biodegradation by mixed microbial culture was investigated at the range of 0.68 – 15.5 g l -1 initial PVA concentrations. The mixed microbial culture was found to degrade within 5 days 98.6–88.5% of the initial PVA levels which ranged from 0.68 to 1.14 g l − 1 . The mixed microbial culture was found to remove more than 90% of the initial PVA concentrations, within the range of 3.13 to 6.64 g l -1 in 16–25 days of incubation at 35 ° C. 
Keywords : polyvinyl alcohol, PVA, mixed culture, biodegradation