Pyrolysis of waste treatment sludge from a polymer manufacturing company

Date of Publication

1997

Document Type

Master's Thesis

Degree Name

Master of Science in Chemical Engineering

Subject Categories

Chemical Engineering

College

Gokongwei College of Engineering

Department/Unit

Chemical Engineering

Thesis Adviser

Carlito Salazar,

Defense Panel Chair

Susan A. Roces

Defense Panel Member

Dr. Azucena A. Puertollano
Archie B. Maglaya

Abstract/Summary

Pyrolysis of sludge using the Bench Scale Pyrolyzer is conducted at temperatures of 300, 400, 500 and 600 degrees Centigrade. The objective is to study the behavior and characteristics of sludge during pyrolysis. It was found that product yields and composition are strongly affected by pyrolysis temperature, and the particle size contributed to a small extent. Generally, highest weight loss and liquid production was obtained when pyrolysis temperature was 500 degrees Centigrade. The yield of liquid product and weight loss was not significant at pyrolysis temperature of 300 degrees Centigrade. A thermogravimetric analyzer was used to determine the effect of heating rate (10, 20, 50, 75 degrees Centigrade per minute) on weight loss of sludge and on the kinetics of decomposition. Highest weight loss was obtained at heating rate of 50 degrees Centigrade per minute. A first order decomposition for the four heating rates considered was obtained when Coats and Redfern method was used to analyze the data. However, lower heating rate (10 & 20 degrees Centigrade per minute) resulted in first order decomposition and higher heating rate (50 & 75 degrees Centigrade per minute) resulted in second order decomposition when analyzed using the general equation.

Abstract Format

html

Language

English

Format

Print

Accession Number

TG02656

Shelf Location

Archives, The Learning Commons, 12F Henry Sy Sr. Hall

Physical Description

90 leaves

Keywords

Pyrolysis; Sewage -- Purification -- Activated sludge process; Water -- Analysis; Polymers and polymerization; Sewage -- Purification -- Biological treatment

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