Pyrolysis of agricultural residues in the local area of Nakhon Pathom Province

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Orathai Wongsawiang
Maleewan Unpipat
Chonticha Chareannate
Ekrachan Chaichana


To reduce problems of agricultural residues management in the local area of Nakhon Pathom Province and add value to it, 3 agricultural residues i.e. pomelo peel, bagasse and cassia pods were brought to a pyrolysis process to obtain the higher value products including bio-oil, char and fuel-gas. It can be found that the cassia pods provided the highest bio-oil yield (33.16 wt%) followed by the bagasse and pomelo peel (28.40 and 20.10 wt%). This is due to the lower moisture content in the cassia pods compared to the two others, leading to a steam reforming which is a process to convert bio-oil into fuelgas being less likely to occur. In addition, it was found that the bio-oil from the cassia pods also had the lowest acidity (pH 3.0) while the bio-oil from the pomelo peel had the highest heat content value (22.39 MJ/kg). For the chars obtained from the 3 materials, it was found that all of them had the relatively low surface area ranging from 13.19 to 23.24 m2/g and found that the char from the bagasse had the lowest ash content followed by the cassia pods and pomelo peel.

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How to Cite
Wongsawiang, O., Unpipat, M., Chareannate, C., & Chaichana, E. (2016). Pyrolysis of agricultural residues in the local area of Nakhon Pathom Province. Interdisciplinary Research Review, 11(3), 46–53.
Research Articles