Methane potential from anaerobic co-digestion of sewage sludge and food waste in a stirred batch reactor

Anaerobic digestion is a promising method for organic waste stabilization, including food waste and sewage sludge. Anaerobic digestion can be completed either in mono digestion or co-digestion, respectively; no longer limited to waste stabilisation method but also towards renewable energy product...

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Main Author:	Sulaiman, Siti Mariam
Format:	Thesis
Language:	English English English
Published:	2022
Subjects:	TD Environmental technology Sanitary engineering
Online Access:	http://eprints.uthm.edu.my/8351/1/24p%20SITI%20MARIAM%20SULAIMAN.pdf http://eprints.uthm.edu.my/8351/2/SITI%20MARIAM%20SULAIMAN%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/8351/3/SITI%20MARIAM%20SULAIMAN%20WATERMARK.pdf
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spelling	my-uthm-ep.83512023-02-20T07:24:18Z Methane potential from anaerobic co-digestion of sewage sludge and food waste in a stirred batch reactor 2022-03 Sulaiman, Siti Mariam TD Environmental technology. Sanitary engineering Anaerobic digestion is a promising method for organic waste stabilization, including food waste and sewage sludge. Anaerobic digestion can be completed either in mono digestion or co-digestion, respectively; no longer limited to waste stabilisation method but also towards renewable energy production in the form of methane. The cosubstrate, a mixture of two or more organic waste, was used as a substrate in anaerobic co-digestion. The effect on co-digestion of municipal sewage sludge and food waste has been reported previously. However, there is less information on the digestibility of co-substrate, specifically a mixture of domestic sewage sludge and food waste. Hence, this study was conducted to examine the characteristics of the mixture of domestic sewage sludge and food waste, to compare the methane yield from a batch test of mesophilic anaerobic co-digestion and to determine the best fit between laboratory and modelling analysis of methane kinetics. Two sets of batch biochemical methane potential (BMP) test were conducted using Automatic Methane Potential Test System (AMPTS II); each for digestion of co-substrate; 1) a mixture of primary sewage sludge and food waste (PSS+FW) and 2) a mixture of secondary sewage sludge and food waste (SSS+FW). The results showed that the addition of food waste to domestic sewage sludge improved volatile solids to total solids (VS/TS) ratio. Between two co-substrates, PSS+FW showed better digestibility shown by 530.4mL methane accumulated, ultimate methane yield of 1233.57 mL CH4/g VS and methane production rate of 625.18 CH4/gVS day. Modified Gompertz modelling found fit well to the laboratory data indicatedby R2 of 0.997. In conclusion, co-digestion improved the synergy effect between organic substrates, indicated by improved volatile solid, VS to total solid, TS (VS/TS) ratio; and increased the efficiency of the anaerobic process shown by high methane production at early stage of the digestion inline with no lag phase. 2022-03 Thesis http://eprints.uthm.edu.my/8351/ http://eprints.uthm.edu.my/8351/1/24p%20SITI%20MARIAM%20SULAIMAN.pdf text en public http://eprints.uthm.edu.my/8351/2/SITI%20MARIAM%20SULAIMAN%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/8351/3/SITI%20MARIAM%20SULAIMAN%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Onn Malaysia Fakulti Sains Gunaan dan Teknologi
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	TD Environmental technology Sanitary engineering
spellingShingle	TD Environmental technology Sanitary engineering Sulaiman, Siti Mariam Methane potential from anaerobic co-digestion of sewage sludge and food waste in a stirred batch reactor
description	Anaerobic digestion is a promising method for organic waste stabilization, including food waste and sewage sludge. Anaerobic digestion can be completed either in mono digestion or co-digestion, respectively; no longer limited to waste stabilisation method but also towards renewable energy production in the form of methane. The cosubstrate, a mixture of two or more organic waste, was used as a substrate in anaerobic co-digestion. The effect on co-digestion of municipal sewage sludge and food waste has been reported previously. However, there is less information on the digestibility of co-substrate, specifically a mixture of domestic sewage sludge and food waste. Hence, this study was conducted to examine the characteristics of the mixture of domestic sewage sludge and food waste, to compare the methane yield from a batch test of mesophilic anaerobic co-digestion and to determine the best fit between laboratory and modelling analysis of methane kinetics. Two sets of batch biochemical methane potential (BMP) test were conducted using Automatic Methane Potential Test System (AMPTS II); each for digestion of co-substrate; 1) a mixture of primary sewage sludge and food waste (PSS+FW) and 2) a mixture of secondary sewage sludge and food waste (SSS+FW). The results showed that the addition of food waste to domestic sewage sludge improved volatile solids to total solids (VS/TS) ratio. Between two co-substrates, PSS+FW showed better digestibility shown by 530.4mL methane accumulated, ultimate methane yield of 1233.57 mL CH4/g VS and methane production rate of 625.18 CH4/gVS day. Modified Gompertz modelling found fit well to the laboratory data indicatedby R2 of 0.997. In conclusion, co-digestion improved the synergy effect between organic substrates, indicated by improved volatile solid, VS to total solid, TS (VS/TS) ratio; and increased the efficiency of the anaerobic process shown by high methane production at early stage of the digestion inline with no lag phase.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Sulaiman, Siti Mariam
author_facet	Sulaiman, Siti Mariam
author_sort	Sulaiman, Siti Mariam
title	Methane potential from anaerobic co-digestion of sewage sludge and food waste in a stirred batch reactor
title_short	Methane potential from anaerobic co-digestion of sewage sludge and food waste in a stirred batch reactor
title_full	Methane potential from anaerobic co-digestion of sewage sludge and food waste in a stirred batch reactor
title_fullStr	Methane potential from anaerobic co-digestion of sewage sludge and food waste in a stirred batch reactor
title_full_unstemmed	Methane potential from anaerobic co-digestion of sewage sludge and food waste in a stirred batch reactor
title_sort	methane potential from anaerobic co-digestion of sewage sludge and food waste in a stirred batch reactor
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Fakulti Sains Gunaan dan Teknologi
publishDate	2022
url	http://eprints.uthm.edu.my/8351/1/24p%20SITI%20MARIAM%20SULAIMAN.pdf http://eprints.uthm.edu.my/8351/2/SITI%20MARIAM%20SULAIMAN%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/8351/3/SITI%20MARIAM%20SULAIMAN%20WATERMARK.pdf
_version_	1776103326414274560

Methane potential from anaerobic co-digestion of sewage sludge and food waste in a stirred batch reactor

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