Journal
INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING
Volume 19, Issue 9, Pages 949-959Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1515/ijcre-2021-0105
Keywords
COD; optimization; reactor; RSM; sono-Fenton; wastewater
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This study focused on the treatment of food industry wastewater using a sono-Fenton process, and successfully optimized the conditions for COD removal, with a predicted value close to the experimental result.
The present study deals with the treatment of complex waste (WW) treated for removal of chemical oxygen demand (COD) of the food industry by a sono-Fenton process using a batch reactor. The response surface methodology (RSM) was employed to investigate the five independent variables, such as reaction time, the molar ratio of H2O2/Fe2+, volume ratio of H2O2/WW, pH of waste, and ultrasonic density on COD removal. The experimental data was optimized. The optimization yields the conditions: Reaction time of 24 min, HP:Fe molar ratio of 2.8, HP:WW volume ratio of 1.9 ml/L, pH of 3.6 and an ultrasonic density of 1.8 W/L. The predicted value of COD was 91% and the experimental result was 90%. The composite desirability value (D) of the predicted percent of COD removal at the optimized level of variables was close to one (D = 0.991).
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