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:: Volume 5, Number 2 (Spring 2016) ::
Arch Hyg Sci 2016, 5(2): 129-135 Back to browse issues page
Investigation of Phasic Process of Biogas Yield by Measuring pH, ORP and Electrical Power Changes
Mohammad Ali Abdoli, Saeed Samani, Abdolreza Karbassi, Mohammad Hassan Mahmoudian, Hamid Reza Pourzamani *
Environmental Research Center, and Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Science, Isfahan, Iran
Abstract:   (730 Views)

Background & Aims of the Study: Studying the phasic process of the biogas yieldis required to optimize the design and operations; it also helps to lower energy production costs by decreasing the capital investment and operational costs. Here we determine the biogas process by measuring pH, ORP, electrical power and make compatibility to the biogas production trend.

Materials and Methods: In this research, one 1150 ml single chamber reactor is used. Biogas production trend was precisely followed by a probable compatibleness with pH, Oxidation Reduction Potential (ORP), electrical Power at a temperature of 37+ 0.5˚C with the substrate of cattle manure. The experiment was followed for 120 days approximately.

Results: As a result, the phases of biogas yield could be determined by the measuring of pH, ORP and its compatibility to gas production. In the reactor, hydrolytic, acetogenic and methanogenic phases were occurred in the days 1-7, 8-16 and 17-104, respectively. Also the electrical power at first showed to be produced at high range but by increasing, the production of biogas decreased and then by decreasing the biogas production gradually, it increased slightly.

Conclusion: Our results indicated that the phases of biogas production can be separated  completely and by diffracting the phases, the efficiency of biogas production could be increased.

Keywords: biogas, process phases, pH, ORP, energy production, Iran
Full-Text [PDF 510 kb]   (274 Downloads)    
Type of Study: Research | Subject: Environmental Health
Received: 2015/12/20 | Accepted: 2016/02/29 | Published: 2016/03/29
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Abdoli M A, Samani S, Karbassi A, Mahmoudian M H, Pourzamani H R. Investigation of Phasic Process of Biogas Yield by Measuring pH, ORP and Electrical Power Changes. Arch Hyg Sci. 2016; 5 (2) :129-135
URL: http://jhygiene.muq.ac.ir/article-1-100-en.html
Volume 5, Number 2 (Spring 2016) Back to browse issues page
Archives of Hygiene Sciences Archives of Hygiene Sciences
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