The effect of biogas purification using biochar from biogas waste on biogas combustion

This research aimed to investigate the capability of a combination of adsorbents, biochar from biogas waste, and zeolite for improving the calorific value of biogas. There were six treatments of adsorbents, 0 volume of biochar and 100 volume of zeolite (ZZ); 25 volume of biochar and 75 volume of zeolite (AZ1); 50 volume of biochar and 50 volume of zeolite (AZ2); 75 volume of biochar and 25 volume of zeolite (AZ3); 100 volume of biochar and 0 volume of zeolite (AA). First, biogas waste was converted to biochar by pyrolysis. Then biogas was purified using this biochar and analyzed its calorific value before and after purification. The calorific value test was conducted by heating water using biogas energy. The results showed that biogas purification affected on final temperature of water heating significantly. The highest final temperature was performed by biogas purification using 75 volume of biochar and 25 volume of zeolite (AZ3). Biogas purification was not affected on calorific value significantly but affected the temperature change of heating water. © 2021 Trans Tech Publications Ltd, Switzerland.