Kinetic modeling of hydrogen production rate by photoautotrophic cyanobacterium A. variabilis ATCC 29413 as a function of both CO sub(2) concentration and oxygen production rate

• Published in: Preparative biochemistry & biotechnology Vol. 47; no. 2; pp. 111 - 115
• Main Authors: Salleh, Siti Fatihah, Kamaruddin, Azlina, Uzir, Mohamad Hekarl, Mohamed, Abdul Rahman, Shamsuddin, Abdul Halim
• Format: Journal Article
• Language: English
• Published: 07.02.2017
• Subjects: Cyanobacteria
• DOI: 10.1080/10826068.2016.1181085
• ISSN: 1082-6068

Hydrogen production by cyanobacteria could be one of the promising energy resources in the future. However, there is very limited information regarding the kinetic modeling of hydrogen production by cyanobacteria available in the literature. To provide an in-depth understanding of the biological system involved during the process, the Haldane's noncompetitive inhibition equation has been modified to determine the specific hydrogen production rate (HPR) as a function of both dissolved CO sub(2) concentration (C sub(TOT)) and oxygen production rate (OPR). The highest HPR of 15 [Image omitted.] was found at x sub(CO2) of 5% vol/vol and the rate consequently decreased when the C sub(TOT) and OPR were 0.015 k mol m super(-3) and 0.55 mL h super(-1), respectively. The model provided a fairly good estimation of the HPR with respect to the experimental data collected.