Optimization of the treatment of surfactant industry wastewater using Fenton process

Date

2014

Degree

Bachelor of Science in Industrial Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Michael Vincent O. Laurio

Abstract

Non-biodegradable wastewater with high COD levels from surfactant manufacturing industry was treated and was optimized for the Fenton process. Iron catalyst dose, hydrogen peroxide dose, pH and reaction time were the factors studied based on the COD removal efficiency. Two level full factorial design was employed to screen significant factors that effect the COD removal efficiency from the Fenton Process. Results of ANOVA showed that the significant were catalyst dose, hydrogen dose and reaction time. The insignificance of pH can be attributed to the small range of pH value assessed which was 3 to 3.5. The significant factors were further optimized via response surface methodology in a face-centered central composite design (RSM-FCCCD). The established statistical model is a non-hierarchical quadratic model. The reaction time factor was found to be insignificant which conforms to its small correlation with the COD removal efficiency in the factorial design analysis. Numerical optimization was employed. There were 20 possible optimum treatment level based on the maximum COD removal efficiency. Based on reagent cost, and reaction time, the recommended optimum treatment condition was at 0.7:19.34 catalyst-to-H2O2 volume ratio and 20 minutes reaction. Time profile was also obtained at the iron catalyst and hydrogen peroxide optimum setting for 30 minutes at five minutes interval. There was an increasing COD removal efficiency from the beginning until 20 minutes of reaction and almost constant 20 minutes to 30 minutes. The treatment cost at the optimum condition was PhP 103, 376 per cubic meter of wastewater.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993.5 2014 E62 /V57

Document Type

Thesis

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