IL-PALM SHELL ACTIVATED CARBON PRODUCTION USING CO 2 EMISSION FROM CaCO 3 CALCINATION
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Date
2013
Journal Title
Journal ISSN
Volume Title
Publisher
Journal of Sustainability Science and Management
Abstract
The need to capture CO2 emission, the major factor in global warming, from stationary
plant is crucial for Malaysia. Cement manufacturing contribute a signifcant amount of this emission
due to its calcination process of the limestone. In this study, this CO2 emission was used to activate
the oil-palm shell (OPS), which is an abundance waste from palm oil refnery plant. The effciency
of the C-CO
2 reaction of the synergetic process was calculated to determine the amount of CO2
emission being used in activating the OPS. The carbonized OPS was heated with CaCO3 in the
furnace. The remaining CaCO3 and the generated oil palm shell activated carbon (OPSAC) weight
were measured. The column test was used to determine the adsorption capability of the generated
OPSAC. It was found that the CO
2 is released slowly at higher than permissible calcination
temperature of 848 oC and increased rapidly as the temperature increased. High C-CO2 reaction
effciencies above 70 % are attained at 850 oC or with equal weight ratio between CaCO3 and
carbonized OPS. The highest experimental adsorption capability at 31.38 mg/g was achieved using
45g CaCO3 at 950 oC, compared to 18 mg/g using commercial activated Oil Palm Shell activated
carbon (OPSAC). The Scanning Electron Microscopy (SEM) verifed the increment of the pore
area thus the surface area of the generated activated carbon. The experiment proved that the CO2
emission from the calcination can be eliminated by activating the oil palm shell waste.
Description
Keywords
Oil-palm shell, activated carbon, activation, calcination, adsorption