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Article

Characterization and Modelling Studies of Activated Carbon Produced from Rubber-Seed Shell Using KOH for CO2 Adsorption

1
Department of Chemical Engineering, Institute of Sustainable Building, Centre for Biofuel and Biochemical Research, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
2
Department of Fundamental and Applied Sciences, Institute of Sustainable Building, Centre for Biofuel and Biochemical Research, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
3
Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500 Semenyih, Selangor, Malaysia
*
Author to whom correspondence should be addressed.
Processes 2019, 7(11), 855; https://doi.org/10.3390/pr7110855
Received: 22 October 2019 / Accepted: 11 November 2019 / Published: 14 November 2019
(This article belongs to the Special Issue Green Technologies: Bridging Conventional Practices and Industry 4.0)
Global warming due to the emission of carbon dioxide (CO2) has become a serious problem in recent times. Although diverse methods have been offered, adsorption using activated carbon (AC) from agriculture waste is regarded to be the most applicable one due to numerous advantages. In this paper, the preparation of AC from rubber-seed shell (RSS), an agriculture residue through chemical activation using potassium hydroxide (KOH), was investigated. The prepared AC was characterized by nitrogen adsorption–desorption isotherms measured in Micrometrices ASAP 2020 and FESEM. The optimal activation conditions were found at an impregnation ratio of 1:2 and carbonized at a temperature of 700 °C for 120 min. Sample A6 is found to yield the largest surface area of 1129.68 m2/g with a mesoporous pore diameter of 3.46 nm, respectively. Using the static volumetric technique evaluated at 25 °C and 1.25 bar, the maximum CO2 adsorption capacity is 43.509 cm3/g. The experimental data were analyzed using several isotherm and kinetic models. Owing to the closeness of regression coefficient (R2) to unity, the Freundlich isotherm and pseudo-second kinetic model provide the best fit to the experimental data suggesting that the RSS AC prepared is an attractive source for CO2 adsorption applications. View Full-Text
Keywords: rubber-seed shell; activated carbon; CO2 adsorption; isotherms; kinetics modeling rubber-seed shell; activated carbon; CO2 adsorption; isotherms; kinetics modeling
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MDPI and ACS Style

Borhan, A.; Yusup, S.; Lim, J.W.; Show, P.L. Characterization and Modelling Studies of Activated Carbon Produced from Rubber-Seed Shell Using KOH for CO2 Adsorption. Processes 2019, 7, 855. https://doi.org/10.3390/pr7110855

AMA Style

Borhan A, Yusup S, Lim JW, Show PL. Characterization and Modelling Studies of Activated Carbon Produced from Rubber-Seed Shell Using KOH for CO2 Adsorption. Processes. 2019; 7(11):855. https://doi.org/10.3390/pr7110855

Chicago/Turabian Style

Borhan, Azry, Suzana Yusup, Jun W. Lim, and Pau L. Show. 2019. "Characterization and Modelling Studies of Activated Carbon Produced from Rubber-Seed Shell Using KOH for CO2 Adsorption" Processes 7, no. 11: 855. https://doi.org/10.3390/pr7110855

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