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Type of publication: conference paper
Type of publication (PDB): Straipsnis nerecenzuojamoje Lietuvos konferencijos medžiagoje / Article in non-peer-reviewed Lithuanian conference proceedings (P2c)
Field of Science: Chemija / Chemistry (N003)
Author(s): Sendžikienė, Eglė;Blažonis, A;Dainienė, Rūta
Title: Biodujų valymo ir panaudojimo galimybės
Other Title: Possibilities of biogas purification and usage
Is part of: Neorganinių junginių chemija ir technologija = Chemistry and Technology of Inorganic Compounds : konferencijos pranešimų medžiaga / Kauno technologijos universitetas. Kaunas : Technologija, 2010
Extent: p. 67-69
Date: 2010
ISBN: 9789955258025
Abstract: Production and usage of biogas is more and more promising. Easily degradable organic raw materials (biomass) and waste (animal manure, wastes from slaughterhouse, milk processing, bear and alcohol production industries) are conventionally used for biogas production. Produced biogas after removal of H2S and CO2 can be used directly as biofuel or, alternatively, as raw material for the production of second generation biofuel. Optimal conditions for CO; absorption with monoethanolamine (MEA) solution (15 %) are the following: 50 °C temperature, process duration - 10-15 min. When water is used for CO2 absorption the optimal duration is the same, optimal process temperature is 30 °C. Degree of saturation of absorbent more depends on parcial pressure than on temperature. The higher the parcial pressure is the less influence of temperature on the saturation degree is observed. Preliminary studies of H2S removal from biogas by using different sorbents at 20 °C temperature and constant 3000 ppm concentration of H2S in biogas has been carried out. It was found that suspensions of natural minerals - dolomite and opoka - sorbed all hidrogen sulfide presented in biogas. Only 50 % of H2S was removed by water. In this case H2S concentration decreased from 3000 to 1538 ppm. When 1 % MEA solution was used H2S concentration decreased to 98 ppm
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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