Polyethyleneimine impregnation on activated carbon: Effects of impregnation amount and molecular number on textural characteristics and metal adsorption capacities
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 molecul...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Published: |
Materials Chemistry and Physics
2008
|
| Subjects: |
| _version_ | 1825719373887700992 |
|---|---|
| author | Yin, C.Y. Aroua, M.K. Daud, W.M.A.W. |
| author_facet | Yin, C.Y. Aroua, M.K. Daud, W.M.A.W. |
| author_sort | Yin, C.Y. |
| collection | UM |
| description | 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. |
| first_indexed | 2024-03-06T05:18:45Z |
| format | Article |
| id | um.eprints-7447 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:18:45Z |
| publishDate | 2008 |
| publisher | Materials Chemistry and Physics |
| record_format | dspace |
| spelling | um.eprints-74472017-11-08T08:37:17Z http://eprints.um.edu.my/7447/ Polyethyleneimine impregnation on activated carbon: Effects of impregnation amount and molecular number on textural characteristics and metal adsorption capacities Yin, C.Y. Aroua, M.K. Daud, W.M.A.W. TA Engineering (General). Civil engineering (General) TP Chemical technology 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. Materials Chemistry and Physics 2008 Article PeerReviewed 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 <https://doi.org/10.1016/j.matchemphys.2008.05.075>. http://www.sciencedirect.com/science/article/pii/S0254058408003568 DOI 10.1016/j.matchemphys.2008.05.075 |
| spellingShingle | TA Engineering (General). Civil engineering (General) TP Chemical technology Yin, C.Y. Aroua, M.K. Daud, W.M.A.W. Polyethyleneimine impregnation on activated carbon: Effects of impregnation amount and molecular number on textural characteristics and metal adsorption capacities |
| title | Polyethyleneimine impregnation on activated carbon: Effects of impregnation amount and molecular number on textural characteristics and metal adsorption capacities |
| title_full | Polyethyleneimine impregnation on activated carbon: Effects of impregnation amount and molecular number on textural characteristics and metal adsorption capacities |
| title_fullStr | Polyethyleneimine impregnation on activated carbon: Effects of impregnation amount and molecular number on textural characteristics and metal adsorption capacities |
| title_full_unstemmed | Polyethyleneimine impregnation on activated carbon: Effects of impregnation amount and molecular number on textural characteristics and metal adsorption capacities |
| title_short | Polyethyleneimine impregnation on activated carbon: Effects of impregnation amount and molecular number on textural characteristics and metal adsorption capacities |
| title_sort | polyethyleneimine impregnation on activated carbon effects of impregnation amount and molecular number on textural characteristics and metal adsorption capacities |
| topic | TA Engineering (General). Civil engineering (General) TP Chemical technology |
| work_keys_str_mv | AT yincy polyethyleneimineimpregnationonactivatedcarboneffectsofimpregnationamountandmolecularnumberontexturalcharacteristicsandmetaladsorptioncapacities AT arouamk polyethyleneimineimpregnationonactivatedcarboneffectsofimpregnationamountandmolecularnumberontexturalcharacteristicsandmetaladsorptioncapacities AT daudwmaw polyethyleneimineimpregnationonactivatedcarboneffectsofimpregnationamountandmolecularnumberontexturalcharacteristicsandmetaladsorptioncapacities |