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Archives of Hygiene Sciences، جلد ۵، شماره ۲، صفحات ۱۲۹-۱۳۵
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عنوان انگلیسی Investigation of Phasic Process of Biogas Yield by Measuring pH, ORP and Electrical Power Changes
چکیده انگلیسی مقاله 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.
کلیدواژه‌های انگلیسی مقاله biogas, process phases, pH, ORP, energy production, Iran
نویسندگان مقاله محمد علی عبدلی | mohammad ali abdoli
environmental engineering, faculty of environment, university of tehran, tehran, iran

سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

سعید سامانی | saeed samani
department of environmental engineering, school of environment, university of tehran, tehran, iran.

سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

عبدالرضا کرباسی | abdolreza karbassi
department of environmental engineering, school of environment, university of tehran, tehran, iran.

سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

محمد حسن محمودیان | mohammad hassan mahmoudian
research center for environmental pollutants, qom university of medical sciences, qom, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی قم (Qom university of medical sciences)

حمیدرضا پورزمانی | hamid reza pourzamani
environmental research center, and department of environmental health engineering, school of health, isfahan university of medical science, isfahan, iran

سازمان اصلی تایید شده: دانشگاه اصفهان (Isfahan university)

نشانی اینترنتی http://jhygiene.muq.ac.ir/browse.php?a_code=A-10-55-2&slc_lang=en&sid=en
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زبان مقاله منتشر شده en
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