Optimising the production of energy from coblended food waste and biosolids using batch reactor studies

Zuhaib Siddiqui; Nigel J. Horan; Abdul R. Sahito; Jamila Abdulkadir; Sheeraz A. Memon

doi:10.1111/wej.12060

Optimising the production of energy from coblended food waste and biosolids using batch reactor studies

Zuhaib Siddiqui, Nigel J. Horan, Abdul R. Sahito, Jamila Abdulkadir, Sheeraz A. Memon

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Energy production from a coblended mixture of biosolids and food waste was optimised for hydrogen and methane production. Four different blends were prepared by varying the carbohydrate:protein (carb:pro) ratios. The biosolids contained a low carbohydrate fraction and so was not suitable for hydrogen production when used alone. However coblending this waste with a carbohydrate-enriched food waste produced a greater hydrogen yield, making this option viable. Batch studies showed that the optimised mix had a biosolids concentration of 25.7% (w/w). The largest hydrogen yield of 198.5mL/gVS_removed was observed when the carb:pro was 2.78, and this was threefold higher than the other carb:pro ratios evaluated in this study. The digestate recovered after hydrogen recovery had a C:N of 17.5, which is in the ideal range for methane production. The biochemical methane potential test showed a methane yield of 239mL/gVS_removed, and the total volatile solids destruction following two-phase hydrogen and methane production was 93%.

Original language	English
Pages (from-to)	483-489
Number of pages	7
Journal	Water and Environment Journal
Volume	28
Issue number	4
DOIs	https://doi.org/10.1111/wej.12060
Publication status	Published - 1 Dec 2014
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2013 CIWEM.

Keywords

Biodegradable
Biohydrogen
Biomethane
Coblending

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1111/wej.12060

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title = "Optimising the production of energy from coblended food waste and biosolids using batch reactor studies",

abstract = "Energy production from a coblended mixture of biosolids and food waste was optimised for hydrogen and methane production. Four different blends were prepared by varying the carbohydrate:protein (carb:pro) ratios. The biosolids contained a low carbohydrate fraction and so was not suitable for hydrogen production when used alone. However coblending this waste with a carbohydrate-enriched food waste produced a greater hydrogen yield, making this option viable. Batch studies showed that the optimised mix had a biosolids concentration of 25.7% (w/w). The largest hydrogen yield of 198.5mL/gVSremoved was observed when the carb:pro was 2.78, and this was threefold higher than the other carb:pro ratios evaluated in this study. The digestate recovered after hydrogen recovery had a C:N of 17.5, which is in the ideal range for methane production. The biochemical methane potential test showed a methane yield of 239mL/gVSremoved, and the total volatile solids destruction following two-phase hydrogen and methane production was 93%.",

keywords = "Biodegradable, Biohydrogen, Biomethane, Coblending",

author = "Zuhaib Siddiqui and Horan, {Nigel J.} and Sahito, {Abdul R.} and Jamila Abdulkadir and Memon, {Sheeraz A.}",

note = "Publisher Copyright: {\textcopyright} 2013 CIWEM.",

year = "2014",

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doi = "10.1111/wej.12060",

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AU - Siddiqui, Zuhaib

AU - Horan, Nigel J.

AU - Sahito, Abdul R.

AU - Abdulkadir, Jamila

AU - Memon, Sheeraz A.

PY - 2014/12/1

Y1 - 2014/12/1

N2 - Energy production from a coblended mixture of biosolids and food waste was optimised for hydrogen and methane production. Four different blends were prepared by varying the carbohydrate:protein (carb:pro) ratios. The biosolids contained a low carbohydrate fraction and so was not suitable for hydrogen production when used alone. However coblending this waste with a carbohydrate-enriched food waste produced a greater hydrogen yield, making this option viable. Batch studies showed that the optimised mix had a biosolids concentration of 25.7% (w/w). The largest hydrogen yield of 198.5mL/gVSremoved was observed when the carb:pro was 2.78, and this was threefold higher than the other carb:pro ratios evaluated in this study. The digestate recovered after hydrogen recovery had a C:N of 17.5, which is in the ideal range for methane production. The biochemical methane potential test showed a methane yield of 239mL/gVSremoved, and the total volatile solids destruction following two-phase hydrogen and methane production was 93%.

AB - Energy production from a coblended mixture of biosolids and food waste was optimised for hydrogen and methane production. Four different blends were prepared by varying the carbohydrate:protein (carb:pro) ratios. The biosolids contained a low carbohydrate fraction and so was not suitable for hydrogen production when used alone. However coblending this waste with a carbohydrate-enriched food waste produced a greater hydrogen yield, making this option viable. Batch studies showed that the optimised mix had a biosolids concentration of 25.7% (w/w). The largest hydrogen yield of 198.5mL/gVSremoved was observed when the carb:pro was 2.78, and this was threefold higher than the other carb:pro ratios evaluated in this study. The digestate recovered after hydrogen recovery had a C:N of 17.5, which is in the ideal range for methane production. The biochemical methane potential test showed a methane yield of 239mL/gVSremoved, and the total volatile solids destruction following two-phase hydrogen and methane production was 93%.

KW - Biodegradable

KW - Biohydrogen

KW - Biomethane

KW - Coblending

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SN - 1747-6585

VL - 28

SP - 483

EP - 489

JO - Water and Environment Journal

JF - Water and Environment Journal

IS - 4

ER -

Optimising the production of energy from coblended food waste and biosolids using batch reactor studies

Abstract

Bibliographical note

Keywords

UN SDGs

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