Polyethyleneimine impregnation on activated carbon: Effects of impregnation amount and molecular number on textural characteristics and metal adsorption capacities

Yin, C.Y. and Aroua, M.K. and Daud, W.M.A.W. (2008) Polyethyleneimine impregnation on activated carbon: Effects of impregnation amount and molecular number on textural characteristics and metal adsorption capacities. Materials Chemistry and Physics, 112 (2). pp. 417-422. ISSN 0254-0584, DOI https://doi.org/10.1016/j.matchemphys.2008.05.075.

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This paper presents findings on polyethyleneimine (PEI) impregnation on palm shell activated carbon (AC) with regards to effects of impregnation amount and types of PEI used on surface characteristics as well as metal ions adsorption capacities of the AC. Fundamental interactions between PEI molecules and metal ions on textural surface (micro- and mesopores) of the AC are elucidated. Three types of low molecular weight PEI distinguished by their molecular numbers, Mn (423, 600 and 1200) are used for the impregnation process. Impregnation at 8.41 wt 423-PEI/AC provides optimum increases for nickel and copper adsorption capacities by factors of 2.6 and 1.5 respectively at 49 reduction of Brunauer-Emmett-Teller (BET) surface area as compared to virgin AC. Only 423-PEI molecules are shown to have considerably filled the micropores of AC whereas the 600- and 1200-PEI molecules are too large (in terms of molecular sizes) to infiltrate the micropores.

Item Type: Article
Additional Information: Cited By (since 1996):5 Export Date: 21 April 2013 Source: Scopus CODEN: MCHPD :doi 10.1016/j.matchemphys.2008.05.075 Language of Original Document: English Correspondence Address: Yin, C.Y.; Faculty of Chemical Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia; email: yinyang@salam.uitm.edu.my References: Ali, U.F.M., Aroua, M.K., Daud, W.M.A.W., (2004) Proceedings of the 3rd Tech. Postgrad. Symp, , 2004, Kuala Lumpur; Jia, Y.F., Thomas, K.M., (2000) Langmuir, 16, p. 1114; Vladimir, S.J., Malik, D., (2002) J. Colloid Interface Sci., 250, p. 213; Park, S.J., Jang, Y.S., (2002) J. Colloid Interface Sci., 249, p. 458; Monser, L., Adhoum, N., (2002) Sep. Purif. Technol., 26, p. 137; Franz, M., Arafat, H.A., Pinto, N.G., (2000) Carbon, 38, p. 1807; Daifullah, A.M., Girgis, B.S., (2003) Colloids Surf. A, 214, p. 181; Yin, C.Y., Aroua, M.K., Daud, W.M.A.W., (2007) Colloids Surf. A, 307, p. 128; Fan, H.J., Anderson, P.R., (2005) Sep. Purif. Technol., 45, p. 61; Huang, C.P., Vane, L.M., (1989) J. Water Pollut. Contam. Fed., 61, p. 1596; Leyva-Ramos, R., Ovalle-Turrubiartes, J., Sanchez-Castillo, M.A., (1999) Carbon, 37, p. 609; Dastgheib, S.A., Karanfil, T., Wei, C., (2004) Carbon, 42, p. 547; Ghorishi, S.B., Keeney, R.M., (2002) Environ. Sci. Technol., 36, p. 4454; Schurer, J.W., Hoedemaeker, P.H.J., Molenaar, I., (1977) J. Histochem. Cytochem., 25, p. 384; Juang, R.S., Chen, M.N., (1996) Ind. Eng. Chem. Res., 35, p. 1935; Kokorin, A.I., Lymar, S.V., Parmon, V.N., (1981) Poly. Sci. USSR, 23, p. 2209
Uncontrolled Keywords: Adsorption; Microporous materials; Surfaces; Charcoal; Copper; Electrolysis; Impregnation; Ions; Manganese; Manganese compounds; Metal ions; Microporosity; Molecules; Trace analysis; Brunauer-Emmett-Teller surface area; Copper adsorption; Ions adsorption; Low-molecular weight; Meso-pores; Metal adsorption; Micro-pores; Molecular sizes; Palm shell; Polyethylene imine; Surface characteristics; Textural characteristics; Activated carbon.
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 16 Jul 2013 08:14
Last Modified: 08 Nov 2017 08:37
URI: http://eprints.um.edu.my/id/eprint/7447

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