Biogas production. (A) The effect of fish oil and bentonite (bleaching clay) on biogas production. (B) Removal of H(sub 2)S with the addition of FeCl(sub 2) to the manure in biogas production.

摘要

Hydrogen sulphide (H(sub 2)S) causes corrosion to metal components in biomass conversion plants. Many attempts have been to eradicate H(sub 2)S. The scrubbing method has proved to be expensive because of the need for very high pressure. The filtering method requires continuous or regular washing and changing or replacement of the filters. Adding ferrous chloride (FeCl(sub 2)) to the manure to eradicare the H(sub 2)S is found to be efficient, less labour intensive; time saving and economical. With regard to the increase in gas quantity by the addition of fish-oil-waste and benetonite (bleaching clay) to the manure, the result is every promising. The production of gas is thought to be increased by this means, which is the reason why the production of methane (CH(sub 4)) per. kg. volatile solid (VS) can be doubled. Most important, the whole transaction is economically viable. (AB).