FUNDAMENTAL STUDY OF CARBON MATERIALS FROM EMPTY FRUIT BUNCH VIA HYDROTHERMAL CARBONIZATION WITH H3PO4 AND NAOH ACTIVATION
Keywords:
Hydrothermal carbonization, empty fruit bunch, hydrochar, acid/base activationAbstract
Lignocellulosic biomass has great potential as an energy source or feedstock for further conversion. Empty fruit bunches (EFBs) were agricultural waste materials from palm oil production. In this research, we aim to study the morphology of hydrochars derived from EFBs via hydrothermal treatments with phosphoric acid (H3PO4) and sodium hydroxide (NaOH) activation at different concentrations (i.e., 0.5, 0.7, and 1 M) at 200C for 12 h, followed by carbonization at 700C under nitrogen atmosphere for 2 h. The samples were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and specific surface analysis. After carbonization, the hydrochar activated by 1.0 M H3PO4 possessed the highest surface area of 590 m2/g with the dominance of micropores. Hydrothermal carbonization with acid–base activation showed an effective method in preparing high porous activated carbon from EFB.
References
Katamanee, A. (2006). Appropriate technology evaluation for oil palm product utilization in Krabi province. Available from: www.li.mahidol.ac.th/ thesis/2549-/cd388/4637145.pdf. Accessed date: Feb 1, 2011.
Matson, T.D., Barta, K., Iretskii, A.V., and Ford, P.C. (2011). One-Plot Catalytic Conversion of cellulose and woody biomass solid to liquid fuels. J. Am. Chem. Soc., 133:14,090-14,097.
Falco, C., Marco-Lozar, J.P., Salinas-Torres, D., Morallon, E., Carzorta-Amoros, D., Titrici, M.M., and Lozano-Castello, D. (2013). Tailoring the porosity of chemically actived hydrothermal carbons: Influence of the precursor and hydrothermal carbonization temperature. Carbon, 62:346-355.
Libra, J.A., Ro, K.S., Kammann, C., Funke, A., Neubauer, N.D., Titirici, M.M., Fuhner, C., Bens, O., Kearn, J., and Emmerich, K.H. (2011). Hydrothermal carbonization of biomass residuals: a comparative review of the chemistry, processes and applications of wet and dry pyrolysis. Biofuels, 2:89-124.
Gonzalez, G.P. (2018). Activated carbon from lignocellulosics precursors: A review of the synthesis methods, characterization techniques and application. Renew. Sustain. Energy Rev., 82:1,393-1,414.
Caturla, F., Molina-Sabio, M., and Rodriguez-Reinoso, F. (1991). Preparation of activated carbon by chemical activation with zinc chloride. Carbon, 29(7):999-1,007.
Torregrosa, R., and Martin-Martinez, J.M. (1991). Activation of lignocellulosic materials a comparison between chemical, physical and combined activation in terms of porous texture. Fuel, 70(10):1,173-1,180.
Botha, F.D., and McEnaney, B. (1993). Chemical activation of a South African coal using phosphoric acid. Adsorp. Sci. Technol., 10(1-4):181-92.
Nethaji, S., and Sivasamy, A. (2011). Adsorptive removal of an acid dye by lignocellulosic waste biomass activated carbon: Equilibrium and kinetic studies. Chemosphere, 82:1,367-1,372.
Castro, J.B., Bonelli, P.R., Cerrella, E.G., and Cukierman, A.L. (2000). Phosphoric acid activation of agricultural residues and bagasse from sugar cane: Influence of the experimental conditions on adsorption characteristics of activated carbons. Ind. Eng. Chem. Res. 39(11):4,166-4,172.
Tseng, R.L. (2006). Mesopore control of high surface area NaOH-activated carbon. J. Colloid Interface Sci., 303:494-502.
Jamari, S.S., and Howse, J.R. (2012). The effect of the hydrothermal carbonization process on palm oil empty fruit bunch. Biomass Bioenerg., 47:82-90.
Yu, Q., Li, M., Ning, P., Yi, H., and Tang, X. (2014). Preparation and phosphine adsorption of activated carbon prepared from walnut shells by KOH chemical activation. Sep. Sci. Technol., 49:2,366-2,375.
Sevilla, M., and Fuertes, A.B. (2009). Chemical and structural properties of carbonaceous products obtained by hydrothermal carbonization of saccharides. Chem. Euro. J., 15:4,195-4,203.
Guo, Y.P., and David, A. (2007). Rock straw, activated carbons prepared from rice hull by one-step phosphoric acid activation. Microp. Mesop. Mater., 100:12-19.
Kazayawoko, M., Balatinecz, J.J., and Woodhans, R.T. (1997). Diffuse reflectance Fourier transform infrared spectra of wood fibres treated with maleated PP. J. Appl. Polym. Sci., 66:1,163-1,173.
Mwaikambo, L.Y., and Ansell, M.P. (2002). Chemical modification of hemp sisal jute and kapok fibers by alkalization. J. Appl. Polym. Sci., 84:2,222-2,234.
Himmelsbach, D.S., Khalili, S., and Akin, D.E. (2002). The use of FT-IR microspectroscopic mapping to study the effects of enzymatic retting of flax (Linum usitatissium L.) stems. J. Sci. Food Agric., 82:685-696.
Lili, W., Yupeng, G., Yanchao, Z., Ying, L., Yuning, Q., Chunguang, R., Xiaoyu, M., and Zichen, W. (2010). A new route for preparation of hydrochars from rice husk. Biores. Technol., 101:9,807-9,810.
Ru, W., Guoqiang, L., Min, L., Jianchun, Z., and Xinmin, H. (2012). Preparation and N2, CO2 and H2 adsorption of super activated carbon derived from biomass source hemp (Cannabis sativa L.) steam. Micorp. Mesop. Mater., 158:108-116.
Román, S., Valente Nabais, J.M., Ledesma, B., González, J.F., Laginhas, C., and Titirici, M.M. (2013). Production of low-cost adsorbents with tunable surface chemistry by conjunction of hydrothermal carbonization and activation processes. Microp. Mesop. Mater., 165:127-133.
Sakina, H., Sarani, Z., and Khairul Zaman, D. (2000). Chemical characterisation of benzylated oil palm empty fruit bunches. Symposium on Utilisation of Oil Palm Tree. Oil Palm Biomass: Opportunities and Challenges in Commercial Exploitation, Kuala Lumpur.
Wang, L.L., Guo, Y.P., Zou, B., Rong, C.G., Ma, X.Y., Qu, Y.N., Li, Y., and Wang, Z.C. (2010). High surface area porous carbons prepared from hydrochars by phosphoric acid activation. Biores. Technol., 102:1,947-1,950.
Schwan, J., Ulrico, S., Batori, V., and Ehrhardt, H. (1996). Raman spectroscopy on amorphous carbon films. J. Appl. Phys., 80:440-447.
Sevilla, M., and Fuertes, A.B. (2009). The production of carbon materials by hydrothermal carbonization of cellulose. Carbon, 47:2,281-2,289.
Kaiser, R., Kulczyk, A., Rich, D., Willey, R.J., Minicucci, J., and Maclver, B. (2007). Effect of pore size distribution of commercial activated carbon fabrics on the adsorption of CWA simulants from the liquid phase. Ind. Eng. Chem. Res., 46(19):6,126-6,132.
Martins, A. and Nunes, N. (2015). Adsorption of a textile dye on commercial activated carbon: A simple experiment to explore the role of surface chemistry and ionic strength. J. Chem. Educ. 92(1):143-147.
