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A FAST GAS-CROMATOGRAPHY METHOD FOR THE EVALUATION OF BIOGAS QUALITY
Abstract
The biogas obtained through processing of livestock residual waste (dung, manure and residual food), food production waste (fruit, vegetable, meat and dairy residues) and also effluents from industrial and municipal wastewater treatment plants can have a significant contribution in energy supplying and environmental protection. In order to determine the quality of this renewable fuel, it was developed a fast gas-chromatography method, through which it can be establish the calorific values, that have an important influence on the price of the final products. By using this gas-chromatography method, the concentrations of hydrocarbons and permanent gases in a short period of time were determined. Furthermore, using these values, some physical properties can be obtained, such as: biogas density, biogas relative density, Wobbe number, emission factor, high heat values and low heat values. Knowing these properties, the power plants processes can be optimized in order to increase the calorific value and to decrease the carbon dioxide emissions. As suspected with the biogas analysis from Romania western region, food waste mixed with dairy manure may affect the composition of biogas, the addition of food wastes into the dairy manure stream affecting the CH4 yield of the biogas.
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