Application of electrochemical- fenton oxidation process for the treatment of semiconductor wastewater containing refractory organics.

Date

10-2012

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Reaño, Johanna Marie P.

Co-adviser

Laurio, Michael Vincent O.

Committee Member

Bautista, Ramer P. Bataller, Butch G. Alfafara, Catalino G.

Abstract

The electrochemical Fenton (EF) oxidation process was applied for the treatment of organic-containing semiconductor wastewater with low biodegradability. The effects of catalyst dose, hydrogen peroxide concentration and current density on COD reduction were investigated using a stirred laboratory scale electro-Fenton glass reactor. Results showed that all the three factors had significant effects on the performance of the EF system. A “limiting” value of each factor was observed after which, changes in COD reduction became negligible. Response surface model for COD reduction was found to be a quadratic model. This was used to determine the optimum setting of factors which was found to be: (1) Fe2+ concentration between 10.59 and 10.98 mM, (2) H2O2 concentration between 1,548.90 and 1549.42 mM, under current density conditions between 210.88 and 221.38 A/m2. At these conditions, the predicted COD reduction was 85.22% and the associated process cost was 21,680 Php/m3 (desirability of 92%). Thermal profile of the EF system was also studied and it was found out that the catalyst dose and H2O2 dose had the most dominant effect on the time to reach maximum reaction temperature and maximum temperature of the process, respectively.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology

Call Number

Thesis

Document Type

Thesis

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