Title of article :
Treatment of aqueous phenol with soybean peroxidase in the presence of polyethylene glycol
Author/Authors :
Christopher Kinsley، نويسنده , , James A. Nicell، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2000
Pages :
8
From page :
139
To page :
146
Abstract :
Soybean peroxidase (SBP) catalyzes the oxidation and polymerization of aromatic compounds in the presence of hydrogen peroxide. The polymerized products precipitate from solution, providing an alternative to conventional treatment methods. Studies were conducted to characterize the use of polyethylene glycol (PEG) as an additive to increase the active life of the enzyme. The effectiveness of PEG increased with its molecular weight, with maximum protection accomplished with PEG of molecular weight 35,000. Linear relationships were found between the quantity of phenol to be treated (1.0–10 mM) and the optimum doses of SBP and PEG required for greater than 95% removal. Observations suggest that it is the interaction between the PEG and the polymeric products that results in the protection of SBP. Following treatment, approximately 25% of the optimum PEG dose remained in the supernatant.
Keywords :
polyethylene glycol , polymerization , additive , enzyme , Waste treatment , Soybean peroxidase , precipitation , phenol
Journal title :
Bioresource Technology
Serial Year :
2000
Journal title :
Bioresource Technology
Record number :
410776
Link To Document :
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