BTEX Benzene Toluene Ethylbenzene and Xylene Compounds Petroleum Refineries Texas Case Study

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Practice and Prepare @ https://www.doorsteptutor.com/Exams/ • Lectures on Various Subjects like Science, Social Studies and Humanities subscribe / testprep • Examrace Lectures in Hindi subscribe / examracehindi • For kids videos nursery to Class 5 subscribe / funprof • For Science (Physics, Chemistry, Biology and Mathematics) Class 11-12 and important topics subscribe / doorsteptutor • Also visit • NCERT Solutions, NIOS @ https://www.flexiprep.com/ • IGCSE, A AS Level @ https://www.examtestprep.com/ • Petroleum refineries are a source of air pollution emissions, such as BTEX compounds (benzene, toluene, ethylbenzene, and xylene) • These compounds occur naturally in crude oil and can be found in sea water in the vicinity of natural gas and petroleum deposits. Other natural sources of BTEX compounds include gas emissions from volcanoes and forest fires. • The primary man-made releases of BTEX compounds are through emissions from motor vehicles and aircrafts, and cigarette smoke. BTEX compounds are created and used during the processing of petroleum products and during the production of consumer goods such as paints and lacquers, thinners, rubber products, adhesives, inks, cosmetics and pharmaceutical products. • BTEX compounds are among the most abundantly produced chemicals in the world. • particulate matter (PM), nitrogen oxides (NOx), carbon monoxide (CO), hydrogen sulfide (H2S), and sulfur dioxide (SO2). • chemicals released are known or suspected cancer-causing agents, responsible for developmental and reproductive problems. The release of these pollutants can also aggravate respiratory conditions such as asthma and COPD • Various contaminants from leaking petroleum tanks include methyl tertiary butyl ether (MTBE), benzene, toluene, ethylbenzene, xylene (BTEX), polycyclic aromatic hydrocarbons (PAHs), total combustible hydrocarbon (TCH), volatile organic chemicals (VOCs), petroleum hydrocarbons (PHCs), and many other toxic chemicals. • Benzene is a known carcinogen (cancer causing) – limit at more than 1 part per billion (ppb). The remaining chemicals (toluene, ethylbenzene and xylenes) are not recognized as carcinogenic and their drinking water health guidelines are much higher—between 300 and 800 ppb. • The following environmental and health standards for BTEX in fraccing fluids ensure that BTEX chemicals are not at a level that will contaminate drinking water or impact on groundwater dependant plants and animals: • Benzene – 1 ppb • Toluene – 180 ppb • Ethylbenzene – 80 ppb • m-Xylene – 75 ppb • o-Xylene – 350 ppb • p-Xylene – 200 ppb • Chapters: • 0:00 BTEX Compounds • 0:34 Sources of Air Pollution • 1:06 Sources of BTEX • 2:10 Release into the Atmosphere • 3:16 Permissible Limit • 4:26 MTBE Compounds • 5:06 Texas Power Outage • 6:30 Ethanol • #btexcompounds #sourcesofairpollution #sourcesofbtex #releaseintotheatmosphere #permissiblelimit #mtbecompounds #texaspoweroutage #ethanol #examrace #examrace #upsc #ugcnet

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