Abstract:
The study investigates the
potential of coconut husks in purifying
biogas, a common issue in the use of biogas
due to the high costs and environmental
impact of expensive purification
technologies. The study used an
experimental setup generating biogas from
kitchen waste and analysed its composition
using an industry-standard biogas analyser.
Coconut husks could remove hydrogen
sulphide (H2S), with a high percentage
removal efficiency of 54% at a column
length of 0.5 m from the inlet. Based on the
results, 2 kg of coconut husk could purify
837 L of biogas, with a removal efficiency of
approximately 62%, before exhaustion. This
suggests that coconut husks can be used in
biogas purification to remove H2S, which is
the most challenging component as it can
corrode metal parts when used at high
concentrations above 750 ppm. Further
research is needed on large-scale purification
using coconut husks at high pressure to allow
more gas adsorption by the purification media.
