Gas Waste Utilization
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Transcript of Gas Waste Utilization
Gas Waste Utilization
Outline1. Overview Gas Waste Treatments2.Elemental Sulfur Recovery3. Liquid CO2 from Bioethanol Plant
1. Overview of Gas Waste Treatments
-may reduce quality
- Increase cost
Waste gas
treatments
Waste Gas Treatments
Source control:
a.Raw product substitution
b.Reductionc. Recycle
Secondary control:
Treatment after it has
been produced
Choice of tech dictated by:
-Economic-Ecological const.
Types of waste gas treatments
a. Condensationb. Incinerationc. Adsorptiond. Absorptione. Membrane systemsf. Biological Treatments
2. Elemental Sulfur Recoveryfrom Biogas Purification
3. Liquid CO2 from Bioethanol Plant
Ethanol Plant
►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 CO2
Co-Products.
a. Distillers grain, used wet or dry, is a highly nutritious livestock feed.
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.
►Utilization
►Carbon dioxide is used to carbonate beverages, to manufacture dry ice, and to flash freeze meat. CO2 is also used by paper mills and other food processors.
►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.
Thank You
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 !