Masters Theses


"Brewery industries are the largest consumers of water among several production industries. Despite consuming these huge amounts of water and electricity, they generate by-products that are harmful to the environment. These by-products contain organic, inorganic, and solid wastes with high chemical oxygen demand (COD) strength. The anaerobic digestion (AD) process plays an important role in treating this wastewater. This study investigates the design and development of an expanded granular sludge bed reactor (EGSB) effluent recirculation, which can achieve high COD removal efficiency of the wastewater and enhance the efficiency of generating biogas with high yields and increases in the concentration of methane in biogas. The recirculation of effluent for different organic loading rates was studied and investigated.

The EGSB system was improved by applying Six Sigma methodology, which followed the DMAIC (Define Measure Analyze Improve Control) process to achieve the goal. By applying this methodology, the production of biogas was improved, process defects were identified and corrected, and significant improvements in the methane composition of the biogas were achieved"--Abstract, page iv.


Smith, Joseph D.

Committee Member(s)

Ludlow, Douglas K.
Ryan, Peter


Chemical and Biochemical Engineering

Degree Name

M.S. in Chemical Engineering


Missouri University of Science and Technology

Publication Date

Spring 2018

Journal article titles appearing in thesis/dissertation

  • Recycling effect in expanded granular sludge bed reactor
  • Implementation of Six Sigma in a methane generation process


xii, 57 pages

Note about bibliography

Includes bibliographical references.


© 2018 Manohar Manchenahalli Shivashankaraiah, All rights reserved.

Document Type

Thesis - Open Access

File Type




Thesis Number

T 11295

Electronic OCLC #