Mesophilic biohydrogen production from calcium hydroxide treated wheat straw

Matthew Reilly; Richard Dinsdale; Alan Guwy

doi:10.1016/j.ijhydene.2014.08.069

Mesophilic biohydrogen production from calcium hydroxide treated wheat straw

Matthew Reilly^*, Richard Dinsdale, Alan Guwy

^*Corresponding author for this work

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

Abstract

The use of Ca(OH)₂ pre-treatment to improve fermentative biohydrogen yields, from wheat straw was investigated. Wheat straw was pre-treated with 7.4% (w/w) Ca(OH)₂ at ambient temperature (20 °C) for 2, 5, 8, and 12 days, prior to 35 °C fermentation with sewage sludge inoculum. Biohydrogen yields were evaluated during dark fermentation and simultaneous saccharification fermentation (SSF) of total pre-treated straw material and compared to those from separated solid and hydrolysate fractions. Ca(OH)₂ pre-treatment followed by SSF, exhibited a synergetic relationship. On average, 58.78 mL-H₂ g-VS^-1 was produced from SSF of pre-treated and filtered solids. This was accompanied by approximately a 10-fold increase in volatile fatty acid production, compared to the untreated control. By omitting pre-treatment hydrolysate liquors from SSF, H₂ production increased on average by 35.8%, per VS of harvested straw. Additional inhibition studies indicated that CaCO₃, formed as a result of pre-treatment pH control, could promote homoacetogenesis and reduce biohydrogen yields.

Original language	English
Pages (from-to)	16891-16901
Number of pages	11
Journal	International Journal of Hydrogen Energy
Volume	39
Issue number	30
DOIs	https://doi.org/10.1016/j.ijhydene.2014.08.069
Publication status	Published - 13 Oct 2014

Keywords

Biohydrogen
Calcium hydroxide
Carbonate
Dark fermentation
Lignocellulose
Wheat straw

UN SDGs

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

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10.1016/j.ijhydene.2014.08.069Licence: CC BY-NC-ND

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title = "Mesophilic biohydrogen production from calcium hydroxide treated wheat straw",

abstract = "The use of Ca(OH)2 pre-treatment to improve fermentative biohydrogen yields, from wheat straw was investigated. Wheat straw was pre-treated with 7.4% (w/w) Ca(OH)2 at ambient temperature (20 °C) for 2, 5, 8, and 12 days, prior to 35 °C fermentation with sewage sludge inoculum. Biohydrogen yields were evaluated during dark fermentation and simultaneous saccharification fermentation (SSF) of total pre-treated straw material and compared to those from separated solid and hydrolysate fractions. Ca(OH)2 pre-treatment followed by SSF, exhibited a synergetic relationship. On average, 58.78 mL-H2 g-VS-1 was produced from SSF of pre-treated and filtered solids. This was accompanied by approximately a 10-fold increase in volatile fatty acid production, compared to the untreated control. By omitting pre-treatment hydrolysate liquors from SSF, H2 production increased on average by 35.8%, per VS of harvested straw. Additional inhibition studies indicated that CaCO3, formed as a result of pre-treatment pH control, could promote homoacetogenesis and reduce biohydrogen yields.",

keywords = "Biohydrogen, Calcium hydroxide, Carbonate, Dark fermentation, Lignocellulose, Wheat straw",

author = "Matthew Reilly and Richard Dinsdale and Alan Guwy",

year = "2014",

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doi = "10.1016/j.ijhydene.2014.08.069",

language = "English",

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TY - JOUR

T1 - Mesophilic biohydrogen production from calcium hydroxide treated wheat straw

AU - Reilly, Matthew

AU - Dinsdale, Richard

AU - Guwy, Alan

PY - 2014/10/13

Y1 - 2014/10/13

N2 - The use of Ca(OH)2 pre-treatment to improve fermentative biohydrogen yields, from wheat straw was investigated. Wheat straw was pre-treated with 7.4% (w/w) Ca(OH)2 at ambient temperature (20 °C) for 2, 5, 8, and 12 days, prior to 35 °C fermentation with sewage sludge inoculum. Biohydrogen yields were evaluated during dark fermentation and simultaneous saccharification fermentation (SSF) of total pre-treated straw material and compared to those from separated solid and hydrolysate fractions. Ca(OH)2 pre-treatment followed by SSF, exhibited a synergetic relationship. On average, 58.78 mL-H2 g-VS-1 was produced from SSF of pre-treated and filtered solids. This was accompanied by approximately a 10-fold increase in volatile fatty acid production, compared to the untreated control. By omitting pre-treatment hydrolysate liquors from SSF, H2 production increased on average by 35.8%, per VS of harvested straw. Additional inhibition studies indicated that CaCO3, formed as a result of pre-treatment pH control, could promote homoacetogenesis and reduce biohydrogen yields.

AB - The use of Ca(OH)2 pre-treatment to improve fermentative biohydrogen yields, from wheat straw was investigated. Wheat straw was pre-treated with 7.4% (w/w) Ca(OH)2 at ambient temperature (20 °C) for 2, 5, 8, and 12 days, prior to 35 °C fermentation with sewage sludge inoculum. Biohydrogen yields were evaluated during dark fermentation and simultaneous saccharification fermentation (SSF) of total pre-treated straw material and compared to those from separated solid and hydrolysate fractions. Ca(OH)2 pre-treatment followed by SSF, exhibited a synergetic relationship. On average, 58.78 mL-H2 g-VS-1 was produced from SSF of pre-treated and filtered solids. This was accompanied by approximately a 10-fold increase in volatile fatty acid production, compared to the untreated control. By omitting pre-treatment hydrolysate liquors from SSF, H2 production increased on average by 35.8%, per VS of harvested straw. Additional inhibition studies indicated that CaCO3, formed as a result of pre-treatment pH control, could promote homoacetogenesis and reduce biohydrogen yields.

KW - Biohydrogen

KW - Calcium hydroxide

KW - Carbonate

KW - Dark fermentation

KW - Lignocellulose

KW - Wheat straw

U2 - 10.1016/j.ijhydene.2014.08.069

DO - 10.1016/j.ijhydene.2014.08.069

M3 - Article

AN - SCOPUS:84920272060

VL - 39

SP - 16891

EP - 16901

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 30

ER -

Mesophilic biohydrogen production from calcium hydroxide treated wheat straw

Abstract

Keywords

UN SDGs

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