Normally, biogas which is produced by the decomposition of solid waste is burned onsite at landfills to get rid of the potentially toxic components. It is possible however, that this biogas could be used as a fuel for heating, as well as a source of injectable gas for horticultural greenhouses. This paper describes a full scale experiment of this idea which took place in France.
The experiment involved converting a commercial boiler to biogas, and purifying biogas from a landfill to remove toxic residues. The purified gasses were injected into greenhouses containing rose crops, while a control greenhouse was kept at normal atmospheric conditions. The heat generated from the boiler was used a means of maintaining the temperature in the greenhouse during the cold season and at night, such that growing conditions were optimal.
During a 24 month period, it was found that crop yields and rose quality rose dramatically in the experimental greenhouse. The study underlines the potential for the use of potential greenhouse gasses, as well as their reduction in the atmosphere, as well as the potential for increased greenhouse crop yield in areas adjacent to solid waste landfills previously thought of as undesirable.
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