Abstract
The increase in intensive using of production elements has been reflected on the increasing of organic waste. Without appropriate treatment, waste leads to the contamination of environment. The conversion of organic waste into material with economic value will contribute to increasing productivity, for example in biogas system. Today, the utilization of waste, biogas sludge, as bio-fertilizer has been developed. However, the utilization of biogas sludge from cow manure as biochar is still rare. The aims of this study were to investigate the recycling of biogas sludge from cow manure as biochar in biogas purification. Biochar made of biogas sludge from cow manure as adsorbent in biogas purification leads to the cycle loop of biogas system. We also investigated the effect of mass variation of biochar made of biogas sludge from cow manure on biogas purification performance. The variation of zeolite and biochar made of biogas sludge with mass ratio of 0:80; 20:60; 40:40; 60:20; and 80:0 had been put inthe adsorption column of biogas purification. The results showed that the increase in biochar mass affected on methane enrichment of biogas. The highest methane enrichment was performed by biochar with ratio 40:40. The utilization of biochar mass above 50% of the total mass per each column decreased methane enrichment. From this study, we concluded that biogas sludge has potential to be used as adsorbent in biogas purification. Biochar from biogas sludge leads to organic cycle system in biogas system that provides option in sustainable energy and additional benefits for farmers.
Published Version
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