Publication: Optimization of rice husk hydrochar via microwave-assisted hydrothermal carbonization: Fuel properties and combustion kinetics
Date
2022
Authors
Zulkornain M.F.
Shamsuddin A.H.
Normanbhay S.
Md Saad J.
Ahmad Zamri M.F.M.
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Ltd
Abstract
The optimization of rice husk hydrochar was carried out via microwave-assisted hydrothermal carbonization to find the optimum parameters for hydrochar production. Three optimized hydrochar was selected to find the best properties for solid biofuel application. The percentage difference between predicted and experimental values was below 10% for all optimized hydrochar. Hydrochar B (optimized for maximum high heating value) has the highest fixed carbon (29.86%), lowest volatile matter (54.6%), lowest ash (8.87%) and highest higher heating value (18.9 MJ/kg) compared to raw rice husk, hydrochar A (maximum solid yield) and hydrochar C (maximum solid yield and higher heating value). The result suggests that the optimized hydrochar produced is comparable to lignite and can be used as direct solid biofuel. � 2021 Elsevier Ltd
Description
Biofuels; Calorific value; Carbonization; Combustion; Combustion kinetics; Fuel properties; Higher heating value; Hydrothermal carbonization; Microwave-assisted hydrothermal; Microwave-assisted hydrothermal carbonization; Optimisations; Rice husk; Solid bio-fuels; Solid yield; Thermochemistry; biofuel; carbon; fuel; lignite; volatile agent; Article; ash; carbonization; combustion; controlled study; decarboxylation; decomposition; deoxygenation; elemental analysis; experimental design; heating; kinetics; microwave radiation; moisture; reaction optimization; reaction time; response surface method; retention time; rice husk; temperature; thermogravimetry; validation process