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Journal of Health Sciences and Surveillance System، جلد ۴، شماره ۱، صفحات ۲-۰
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Assessing Emissions of Volatile Organic Componds from Landfills Gas
چکیده انگلیسی مقاله Abstract Background: Biogas is obtained by anaerobic decomposition of organic wastes buried materials used to produce electricity, heat and biofuels. Biogas is at the second place for power generation after hydropower and in 2000 about 6% of the world power generation was allocated to biogas. Biogas is composed of 40–45 vol% CO2, 55–65 vol% CH4, and about 1% non-methaneVOCs, and non-methane volatile organic compounds. Emission rates are used to evaluate the compliance with landfill gas emission regulations by the United States Environmental Protection Agency (USEPA). BTEX comounds affect the air quality and may be harmful to human health. Benzene, toluene, ethylbenzene and xylene isomers that are generally called BTEX compounds are the most abundant VOCs in biogas. Methods: Sampling of VOCs in biogas vents was operated passively or with Tedlar bags. 20 samples were collected from 40 wells of old and new biogas sites of Shiraz’ landfill. Immediately after sampling, the samples were transferred to the laboratory. Analysis of the samples was performed with GC-MS. Results: The results showed that in the collection of the old and new biogas sites, the highest concentration of VOCs was observed in toluene (0.85ppm) followed by benzene (0.81ppm), ethylbenzene (0.13ppm) and xylene (0.08ppm). Conclusion: The results of the study showed that in all samples, most available compounds in biogas vents were aromatic hydrocarbon compounds.These compounds’ constituents originate from household hazardous waste materials deposited in the landfill or from biological/chemical decomposition processes within the landfill.
کلیدواژه‌های انگلیسی مقاله VOCs, BTEX, Biogas plant, Energy, Tedlar bags
نویسندگان مقاله فهیمه خادمی | fahime khademi
department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

محمد رضا سمایی | mohammad reza samaei
department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

کورش عزیزی | kourosh azizi
department of entomology, school of health, shiraz university of medical sciences, shiraz, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

عباس شاهسونی | abbas shahsavani
environmental and occupational hazards control research center, shahidbeheshti university of medical science, tehran, iran amp;amp; department of environmental health engineering, school of public health, shahidbeheshti university of medical science, tehran, iran


حسن هاشمی | hassan hashemi
department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

آیدا ایرجی | aida iraji
central research laboratory, shiraz university of medical sciences, shiraz, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

عبدالخالق میری | abdolkhalegh miri
department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

نشانی اینترنتی http://jhsss.sums.ac.ir/index.php/jhsss/article/view/100
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Articles
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