Thermophilic biohydrogen production from palm oil mill effluent (POME) using suspended mixed culture

Ismail, Isnazunita and Hassan, Mohd Ali and Abdul Rahman, Nor Aini and Chen, Sau Soon (2009) Thermophilic biohydrogen production from palm oil mill effluent (POME) using suspended mixed culture. Biomass and Bioenergy, 34 (1). pp. 42-47. ISSN 0961-9534

Full text not available from this repository.

Official URL:


A batch study was conducted to determine the fate of carbohydrate and oil that are present in palm oil mill effluent (POME) during the biohydrogen fermentation process. Sucrose and crude palm oil (CPO) were chosen as substrates and the kinetic profile indicated that mainly sucrose was metabolised by the mixed sludge. The hydrogen yield based on the COD of sucrose added was 146 cm3 g1 which is equivalent to a hydrogen to hexose mole ratio of 2.5. The free fatty acids from hydrolysed CPO were not metabolised further which render insignificant generation of hydrogen and volatile fatty acids from oil-based substrate. The average continuous biohydrogen production rate (HPR) from a unit volume of POME under thermophilic condition at 55 C was 2.64m3m3 d1 at a hydraulic retention time (HRT) of 4 days. Hydrogen constitutes up to 52% of the total biogas and methane was not detected over the 60 day continuous operation. The hydrogen yield (i.e. based on mole ratio of hydrogen to hexose) was 1.72 with an average carbohydrate conversion efficiency of 58%. These limit the potential of recovering more hydrogen energy from POME under current operating conditions.

Item Type:Article
Keyword:Biohydrogen, Anaerobic fermentation, Palm oil mill effluent Thermophilic
Faculty or Institute:Faculty of Biotechnology and Biomolecular Sciences > Environmental Biotechnology Research Group
DOI Number:10.1016/j.biombioe.2009.09.009
ID Code:7657
Deposited By: Najwani Amir Sariffudin
Deposited On:09 Aug 2010 04:54
Last Modified:09 Aug 2010 06:12

Repository Staff Only: Edit item detail

Document Download Statistics

This item has been downloaded for since 09 Aug 2010 04:54.

View statistics for "Thermophilic biohydrogen production from palm oil mill effluent (POME) using suspended mixed culture"

Universiti Putra Malaysia Institutional Repository

Universiti Putra Malaysia Institutional Repository is an on-line digital archive that serves as a central collection and storage of scientific information and research at the Universiti Putra Malaysia.

Currently, the collections deposited in the IR consists of Master and PhD theses, Master and PhD Project Report, Journal Articles, Journal Bulletins, Conference Papers, UPM News, Newspaper Cuttings, Patents and Inaugural Lectures.

As the policy of the university does not permit users to view thesis in full text, access is only given to the first 24 pages only.