Detoxification of simulated textile wastewater using a membraneless electrochemical reactor with immobilized peroxidase.
Simulated textile wastewater was degraded using a membraneless electrochemical reactor with immobilized peroxidase on the porous Celite. The optimal current density was 10 A m(-2), at which the highest amount of hydrogen (H(2)O(2)) could be generated. The decolorization efficiencies of the simulated wastewater using the electrochemical and electroenzymatic methods were 35% and 92%, respectively. Biodegradability, the ratio of 5-day biochemical oxygen demand to chemical oxygen demand (BOD(5)/COD), was enhanced about 1.88 times when using the electroenzymatic treatment rather than raw wastewater, which could not be achieved by the electrochemical treatment. The toxic unit (TU), calculated using the lethal concentration (LC(50)) of Daphnia magna (D. Magna), of effluent treated by electroenzymatic method was below 1, whereas those of simulated textile wastewater and effluent treated by electrochemical method were 11.4 and 3.9, respectively.
Cho
Seung-Hee
SH
Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-Gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea.
Shim
Joonmok
J
Moon
Seung-Hyeon
SH
D000818:Animals; D003621:Daphnia / Q000187:drug effects; D004563:Electrochemistry / Q000295:instrumentation*; D004800:Enzymes, Immobilized / Q000378:metabolism*; D007220:Industrial Waste; D010544:Peroxidases / Q000378:metabolism*; D013783:Textile Industry; D014874:Water Pollutants, Chemical / Q000633:toxicity*
D004800:Enzymes, Immobilized; D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D010544:Peroxidases