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Published byJade Barrett Modified over 9 years ago
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Gas Waste Utilization
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Outline 1. Overview Gas Waste Treatments 2.Elemental Sulfur Recovery 3. Liquid CO 2 from Bioethanol Plant
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1. Overview of Gas Waste Treatments
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-may reduce quality - Increase cost Waste gas treatments Waste Gas Treatments Source control: a.Raw product substitution b.Reduction c.Recycle Secondary control: Treatment after it has been produced Choice of tech dictated by: -Economic -Ecological const.
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Types of waste gas treatments a.Condensation b.Incineration c.Adsorption d.Absorption e.Membrane systems f.Biological Treatments
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2. Elemental Sulfur Recovery from Biogas Purification
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3. Liquid CO 2 from Bioethanol Plant
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Ethanol Plant
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►America Case Study ►In 2005, 97 ethanol plants in 21 states produced a record 3.904 billion gallons of ethanol ►A bushel of corn weighs 56 pounds and will produce at least -> 2.8 gallons of ethanol -> 17 pounds of distillers grain -> 18 Pounds of CO 2
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Co-Products. a.Distillers grain, used wet or dry, is a highly nutritious livestock feed.Distillers grain b.Carbon dioxide is given off in great quantities during fermentation and many ethanol plants collect, compress, and sell it for use in other industries.Carbon dioxide
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►Utilization ►Carbon dioxide is used to carbonate beverages, to manufacture dry ice, and to flash freeze meat. CO 2 is also used by paper mills and other food processors.
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►Utilization ►A project is underway in Kansas to use carbon dioxide to recover oil from marginal oil fields. Using this miscible CO2 flooding, carbon dioxide from a nearby ethanol plant is injected into oil-producing rocks about 3,000 feet underground. The carbon dioxide mixed with oil that has collected in hard-to-reach spots in the rock, forcing it into nearby production wells.
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Thank You
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Quiz 1.Jelaskan langkah pengolahan limbah cair secara umum! 2.Jelaskan 4 macam kolam secondary treetment limbah cair! 3.Jelaskan perbedaan biofilter, biosrubber dan biotrickling !
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