The increase of energy yield with the addition of zeolite in swine waste for the thermophilic production of biogas (original) (raw)

2005

Abstract

The effect of the natural zeolites on anaerobic decomposition of swine waste was investigated. Especially the effect of the addition of zeolite, on different amounts, on the increase of energy yield of waste (more methane production in shorter the attribution of the energy in short time) was examined. On top of this, the impact of the addition of zeolite on the reduction of total solids as well as on the reduction of volatile solids and on BOD5 (environmental factors) was, also, investigated. Two preliminary measurements were conducted in order to be used for the design of the main experiment. The duration of each preliminary measurement was 30 days. The results of the above measurements were used as guides for both: a) the amounts of zeolite which were used in the main experiment, and b) the duration of each replication. The doses of zeolite which decided for the main experiment were 0, 4, 8, 12 g zeolite / l waste. The main experiment included 5 replications in time. The duration ...

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