Application of advanced oxidation processes including O3, H2O2 and O3/H2O2 for decolorisation and COD concentration removal of instant coffee wastewater treatment after anaerobic treatment. This wastewater mainly contains inert COD that is hard treated by the biological process. The efficiency of decolorisation and COD removal is investigated by changing of pH, concentrations of O3 and H2O2, O3:H2O2 molar ratio, and concentrations of Cl–, SO4 2–, HCO3 –. The advanced oxidation process applied O3/H2O2 is the highest efficiency of decolorisation and COD removal to compare with that of O3 and H2O2 separately. A pH optimum range is between 7 and 9 of O3, H2O2 và O3/H2O2 and the best molar ratio of O3:H2O2 is 3 for the highest efficiency. In the optimal conditions, decolorisation and COD removal efficiencies of O3, H2O2 and O3/H2O2 are 71 % and 62 %, 70 % and 47 %, 95 % and 73 %, respectively. Additionally, a presence of Cl–, HCO3 –, SO4 2– ions will moderately decrease the decolorisation and COD removal efficiencies. Advanced oxidation process using O3/H2O2 is applied as a possible method for instant coffee wastewater removal after treated by the biological processes.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.