Application Of Response Surface Methodology (RSM) For The Optimization Parameters Of Hydrochar Production From Coconut Husk Using Hydrothermal Carbonization
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Date
2021-07-01
Authors
Zahrimi, Mohamad Mifzal Nur Hakim
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
An ideal and optimum conditions for maximum production of hydrochar yield
of coconut husk via hydrothermal carbonization (HTC) were investigated using
optimization method. The optimization and analysis of significant operating
conditions which were reaction temperature and residence time was done based on the
experiment conducted in the previous study at hydrothermal carbonization temperature
range from 180 to 240°C and 48 to 96 h. The simulation was carried out to study the
effect of operating conditions (reaction temperature, residence time and biomass-water
ratio) on hydrochar through hydrothermal carbonization of coconut husk with the
range taken from previous studies at 180-260°C, 0.5-2 h and 1:5-1:15 wt%
respectively. Simulation data was optimized and analysed by using response surface
methodology (RSM) in Design Expert to design the experiments. Based on chosen
Central Composite Design (CCD) method, a quadratic model was developed to
correlate the operating conditions and hydrochar yield. The optimized hydrochar yield
from the experiment conducted in previous study was obtained at 60.669% at
194.121°C and 48 h. From the simulation data, hydrochar yield was obtained at
70.909% at 180°C, 0.5 h and 1:15 wt%.