Characterization of cenospheres from Malaysian coal generated power plants: Jimah, Kapar and Manjung

Salmia Beddu, and Teh Sabariah Abd Manan, and Mahyun Mohd Zainoodin, and Nur Liyana Mohd Kamal, and Affiani Machmudah, and Saba Yavari, and Daud Mohamad, and Zarina Itam, and Agusril Syamsir, and Fadzli Mohamed Nazri, and Yee Hooi Min, and Warid Wazien Ahmad Zailani, (2022) Characterization of cenospheres from Malaysian coal generated power plants: Jimah, Kapar and Manjung. Jurnal Kejuruteraan, 34 (6). pp. 1251-1264. ISSN 0128-0198


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Cenosphere is a component of fly ash (FA) and has been used as part of sustainable material in wastewater treatment, automotive, ceramic, and construction industries due to its properties. This research presents the first study on characterization of cenospheres from Malaysian power plants namely Jimah, Kapar and Manjung. The characterization was conducted via X-ray fluorescence (XRF), particle size analyzer (PSA), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The XRF analysis consisted of oxides elements ranged from 14.70 to 22.63% (aluminum oxide, Al2 O3 ), 3.78 to 13.44% (calcium oxide, CaO), 34.73 to 57.67% (silicon dioxide, SiO2 ), 0.42 to 1.07% (sulphur trioxide, SO3 ), 9.09 to 24.92% (iron oxide, Fe2 O3 ), 3.62 to 3.67% (potassium oxide, K2 O), 1.76 to 4.24% (titanium oxide, TiO2 ) and 0.16 to 0.93% (magnesium oxide, MgO). The classifications of cementitious materials by American Standard of Testing Materials were Class F (Jimah, Kapar) and Class C (Manjung). The classification represents the quality and capability of cementitious materials as cement replacement material, additive, and filler in concrete mix. The sizes of cenospheres were Kapar > Jimah > Manjung. The sizes of cenosphere were found to be larger than FA (Jimah: 2.720-49.21 µm, Kapar: 5.069-98.29 µm, Manjung: 1.084-3.986 µm). Cenospheres contained quarts (Jimah, Kapar, Manjung: 26°) and silicates (Kapar, Manjung: 45°). Ferrospheres, cenospheres, aluminosilicate-spheres, plerospheres and carbon fragments were observed. The cenosphere from Manjung showed high quality as cement replacement material, additive, and filler with 13.44% of CaO.

Item Type:Article
Keywords:Physicochemical properties; Cenospheres; XRF; PSA; XRD; SEM; Malaysian power plants
Journal:Jurnal Kejuruteraan
ID Code:21130
Deposited By: Mohd Hamka Md. Nasir
Deposited On:10 Feb 2023 02:05
Last Modified:10 Feb 2023 02:05

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