Enzymatic Removal of Phenol from Industrial Wastewaters
- 1 Department of Chemical Engineering, Faculty of Engineering, Ege University, Izmir, Turkey
- 2 Department of Bioengineering, Fa- culty of Engineering, Ege University, Izmir, Turkey.
Abstract
Phenol, as a pure substance, is used in many fields due to its disinfectant, germicidal, local anaesthetic and peptizing properties. Aqueous solutions of phenol are produced as a waste of these industries and are discharged into the envi ronment. Therefore, elevated concentrations of phenol may be found in air or water due to industrial discharge or use of phenolic products. The aim of this study was to evaluate the phenol removal capability of enzymes from low-phenol- content (up to 5%) industrial wastewaters and to optimize the reaction conditions. For this purpose, two different en zymes namely, Laccase and Peroxidase were investigated with respect to their phenol removal capacities. The enzy matic reaction conditions were optimized using Response Surface Methodology (RSM). As a result 78% phenol re moval was achieved with laccase using a model wastewater. In the studies where the enzyme was immobilized, a 50% removal was achieved indicating that further optimization was needed in this area.
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