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This project was split into three subprojects on the production and consumption of biogas from manure fermentation. The first sub-project aimed at improving the fermentation efficiency by better process control and more efficient conversion of biogas into electricity and heat through monitoring of the slurry supply, the stirring of the fermenter contents, and heating and pre-heating of the (fresh) slurry. These aspects were examined to discover whether a biogas plant can be operated reliably when the slurry is supplied through an intermediate tank and stirred by means of slurry recirculation. The second sub-project dealt with biogas purification. Data were collected on gas drying and three purification techniques. Effectiveness, safety and costs were examined for the following methods: dry biogas purification with iron oxide, gas scrubbing with iron-containing groundwater, and the addition of chloride to fresh slurry. The third sub-project dealt with measuring the energy flows on a number of farms of the main livestock sectors. This was done to record and analyse the energy consumption patterns. For two dairy farms, two pig farms (combined rearing and feeding) and two poultry farms (layers) the electric load patterns were measured. Of these, pig farms offered the best economic prospects.

Additional information

Authors: HOEKSMA P, Institute of Agricultural Engineering (IMAG), Wageningen (NL)
Bibliographic Reference: EUR 11976 EN (1989) FS, 50 pp., ECU 6.25
Availability: (2)
Record Number: 198910387 / Last updated on: 1994-12-01
Original language: en
Available languages: en
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