ProQuest
Abstract/Details

Biomethane Recovery Potential from Brewer’s Yeast Using Two-Stage Anaerobic Digestion

Jariwala, Ashnabanu. University of Windsor (Canada), ProQuest Dissertations Publishing, 2021. 28543566.

Abstract (summary)

The brewery industry is a major global industry which produces several waste by-products, one of which is Residual Beer Yeast (RBY). After series of treatments, the RBY, because of its high nutritional content, is either sold as animal feed to generate some revenue or disposed of in the landfill. The treatment of RBY is an additional expense for the brewery sector as it involves chemical and thermal treatments. This makes it crucial to explore alternatives such as biogas production from the Anaerobic Digestion (AD) process to generate revenues that can aid in sustaining the brewery sector. In this study, an evaluation of the single-stage and two-stage anaerobic digestion process using Biomethane Potential Assay on RBY has been performed to assess the methane production from RBY. Before setting up a two-stage reactor, the RBY was pre-treated using the High-Rate Hydrolysis/Acidification (HRHA) process to further evaluate the effect of HRHA on RBY treatment.

The average Total Suspended Solid (TSS) solubilization of 15.54% for TRBY had resulted in the increase in methane production from 68 ± 8 L CH4/L sample for the single-stage reactor to 74.9 ± 10 L CH4/L sample in the two-stage reactor for the pre-treated RBY. It also reduced the time to half (10.8 days) for treated RBY as compared to untreated RBY (21 days) for the 402 mL substrate. Furthermore, the TSS solubilization did not increase in soluble COD, implying that mostly colloidal aggregates were formed. The Total COD (TCOD) removal efficiency was 7% higher in the two-stage AD process as compared to the single-stage AD process.

Indexing (details)


Subject
Environmental engineering;
Civil engineering
Classification
0775: Environmental engineering
0543: Civil engineering
Identifier / keyword
Anaerobic Digestion; Beer yeast; HRT; Hydrolysis; Single-stage; Two-stage
Title
Biomethane Recovery Potential from Brewer’s Yeast Using Two-Stage Anaerobic Digestion
Author
Jariwala, Ashnabanu
Number of pages
76
Publication year
2021
Degree date
2021
School code
0115
Source
MAI 82/12(E), Masters Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9798516914362
Advisor
Seth, Rajesh; Biswas, Nihar
Committee member
Hafez, Hisham; Ruparathna, Rajeev; Edrisy, Afsaneh
University/institution
University of Windsor (Canada)
Department
ENVIRONMENTAL ENGINEERING
University location
Canada
Degree
M.A.Sc.
Source type
Dissertation or Thesis
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
28543566
ProQuest document ID
2554974584
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
https://www.proquest.com/pqdtglobal/docview/2554974584