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Effects of Acid: Pretreatment of Inoculums and Substrate Concentration for Batch Thermophilic Biohydrogen Production from Starch - Rich Synthetic Wastewater
University of Borås, School of Engineering.
2011 (English)In: lntemational Symposium on Southeast Asian Water Environment Part 1, 2011Conference paper (Refereed)
Sustainable development
The content falls within the scope of Sustainable Development
Abstract [en]

The objective of this study is to investigate the biohydrogen production in a thermophilic temperature at various acid - pretreatment of inoculums and substrate concentration of starch - ri ch synthetic wastewater, i.e. tapioca and potato synthetic one . Batch tests were conducted in 118 mL batch reactor s under thermophilic temperature (55 0 C) by natu ral mixed culture from a biogas plant. Biohydrogen production in ten days fermentation at a range of acid - pretreatment inoculum s from 5 to 6 and substrate synthetic tapioca and pot ato wastewater concentration from 5 to 50 g/L were evaluated. The maximum yield of 19.06 mmol H 2 /gVS added for synthetic potato wastewater and of 18.15 mmol H 2 /g VS added for synthetic tapioca wastewater were obtained at acid - pretreatment of inoculums of 5 and the substrate concentration of 10 g/L. The content of biohydrogen in th e biogas has a range between 41% and 43%, moreover there was no significant methane observed. For the pH inoculums of 5, acetic and n - butyric acids were found as main volatile fatty acid s in the biohydrogen fermentation . The results suggested that the starch - rich synthetic wastewater is one of potential sources of renewable energy from organic wastewater to produce biohydrogen.

Place, publisher, year, edition, pages
Keyword [en]
pH, starch, synth etic wastewater, thermophilic, Resursåtervinning
Keyword [sv]
National Category
Engineering and Technology
Research subject
Resource Recovery
URN: urn:nbn:se:hb:diva-6992Local ID: 2320/12371OAI: diva2:887699
The 9th International Symposium on Southeast Asian Water Environment, Bangkok, Thailand 2011
Available from: 2015-12-22 Created: 2015-12-22

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Sárvári Horváth, Ilona
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