title: Electrochemical heterogeneous catalytic degradation of wastewater containing phenol.
abstract: An electrochemical-heterogeneous catalytic process was applied to remove phenol from wastewater. Three key factors-applied potential, supporting electrolyte concentration, and pH-were tested for their effects on the phenol removal. The optimal condition was determined as an applied potential of 25 V, Na(2)SO(4) concentration of 500 mg L(-1), and a pH of 2.5. Under the optimal condition, the phenol and chemical oxygen demand (COD) removals were 83.7% and 42.9%, respectively. The apparent kinetics of phenol removal could be expressed as a pseudo first-order reaction. In addition, a possible mechanism of phenol degradation was proposed based on the intermediate products.
authors.affiliation: Institute of Resources & Environment, Henan Polytechnic University, Jiaozuo, Henan, China. jbjqjl@yahoo.com.cn
authors.forename: Baojun
authors.initials: B
authors.lastname: Jia
authors.forename: Dong
authors.initials: D
authors.lastname: Zhang
authors.forename: Ai L
authors.initials: AL
authors.lastname: Zhang
authors.forename: Ji T
authors.initials: JT
authors.lastname: Zhou
mesh_terms: D002384:Catalysis; D002623:Chemistry Techniques, Analytical / Q000379:methods; D004553:Electric Conductivity; D004563:Electrochemistry / Q000379:methods*; D004573:Electrolytes; D004867:Equipment Design; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D007700:Kinetics; D010100:Oxygen / Q000737:chemistry; D019800:Phenol / Q000032:analysis; D014865:Waste Disposal, Fluid / Q000379:methods; D014873:Water Pollutants / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis; D018508:Water Purification / Q000379:methods*
chemical_list: D004573:Electrolytes; D007220:Industrial Waste; D014873:Water Pollutants; D014874:Water Pollutants, Chemical; D019800:Phenol; D010100:Oxygen