[Microwave assisted UV electrodeless discharge lamp photochemical degradation of 4-chlorophenol in aquatic solutions].
A microwave assisted UV electrodeless discharge lamp system (MW/UV) was used for photo-degradation of 4CP simulated wastewater. In order to evaluate the degradation efficiency of 4CP, UV spectrophotometry and ion chromatography were used for determination of 4CP and Cl- respectively. The degradation rate in MW/UV system was higher than that in the UV system within 120min, which were 52.40% and 21.56% respectively. The degradation efficiency was improved by increasing pH value of the solution, aerating O2 gas, enhancing light intensity, or adding H2O2 oxidant. The degradation of 4CP under MW/UV accords with the first order kinetics equation.
Ai
Zhi-hui
ZH
Environmental Science Research Institute of HUST, Wuhan 430074, China.
Jiang
Jun-qing
JQ
Yang
Peng
P
Zhou
Tao
T
Lu
Xiao-hua
XH
D002733:Chlorophenols / Q000032:analysis / Q000737:chemistry*; D004566:Electrodes; D008027:Light; D008872:Microwaves; D010777:Photochemistry / Q000379:methods; D014466:Ultraviolet Rays; D014873:Water Pollutants / Q000032:analysis; D018508:Water Purification / Q000295:instrumentation / Q000379:methods*
D002733:Chlorophenols; D014873:Water Pollutants