Parametric and Kinetics Studies on the Decolorization and COD Reduction of Poultry Wastewater using Electrolyzed Water

Author : dela Peña, Neil Urriza
Major Adviser : Arocena, Rhebner E. 
Committee Members : Movillon, Jovita A.; Guerrero, Gino Apollo M. 
Year : 2017
Month : June
Type : Thesis
Degree: BS
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Abstract

Electrolyzed water generated by the Cawolo Disinfectant Generator CA-5 was used to treat the poultry wastewater from a local poultry farm in Brgy. Balayong, Nagcarlan, Laguna. Design-Expert Version 10 (Trial version – 8027-2275-3546-EVAL) was used to generate the 2³ factorial experimental design. The %COD reduction and decolorization efficiency were evaluated based on wastewater concentration (216 ppm and 1080 ppm), volume ratio of electrolyzed water : wastewater (0.0526 and 0.1111) and reaction time (2hr and 8hr). A 65.02 %COD removal and 72.04 % decolorization efficiency was achieved at 216 ppm wastewater concentration, 0.1111 volume ratio at 8hr reaction time. During the kinetics study, highest %COD reduction value of 77.37 % and highest decolorization efficiency value of 64.58 % were observed at 10 hr reaction time. As the wastewater concentration is increased, COD removed per mg free chlorine and color removal per mg free chlorine also increased. At lower volume ratio, COD removed per mg free chlorine and color removal per mg free chlorine also increased. Results showed that as the reaction time increased, COD removed per mg free chlorine and color removal per mg free chlorine also increased. Kinetics analysis showed that the COD reduction of poultry wastewater at 216 ppm, 0.1111 volume ratio and 8 hr reaction time followed zero order kinetics with specific rate constant k = 66.66 ppm/hr. Based on these results, the use of electrolyzed water in the treatment of poultry wastewater can significantly reduce the wastewater’s COD and color.


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