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Celite 에 고정화된 pseudomonas sp . 에 의한 폐수 중의 PVA 분해
성기달,김정목,조무환 ( Kee Dal Seong,Jeong Mog Kim,Moo Hwan Cho ) 한국화학공학회 1992 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.30 No.3
The aim of this study is to treat efficiently PVA-containing wastewater. PVA is known as one of poorly biodegradable materials. As a microbial immobilization support, celite was used in the air-lift reactor. The PVA removal efficiency was 91.6% at 2 g PVA/L·day of PVA volume loading, and at 24 hr retention time, when F/M ratio was 0.13 g PVA/g cell·day. At the same retention time, an increasing rate of PVA removal efficiency was decreased with increasing concentration of microorganism in the reactor, and at the same concentration of microorganism. PVA removal efficiency was approximately constant when PVA concentration of influent was more than 2 g/L. At the same PVA volume loading, treating wastewater of low concentration at short period resulted in lower PVA concentration in effluent than treating wastewater of high concentration at long period with respect to the effluent PVA concentration, even though the removal efficiency of the former was lower than that of the latter. Specific PVA removal efficiency increased proportionally with specific PVA loading up to 0.7 g PVA/g cell·day. PVA removal rate constant, K was 0.069 L/㎎/hr. PVA removal efficiency could be expressed as follows. S_r/S_o=0.069X·(V/Q)/1+0.069X·(X/Q)