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Removal of Cr(III) from Aqueous Solutions Using Zeolite NaY Prepared from Rice Husk Ash.

Nik Ahmad Nik Malek, and Alias Mohd. Yusof, (2007) Removal of Cr(III) from Aqueous Solutions Using Zeolite NaY Prepared from Rice Husk Ash. Malaysian Journal of Analytical Sciences, 11 (1). pp. 76-83. ISSN 13942506

Full text not available from this repository.

Official URL: http://pkukmweb.ukm.my/~mjas/v11_n1/12_213B5-Ahmad_Nizam-Alias-UTM.pdf

Affiliations

Universiti Teknologi Malaysia, Faculty of Science, Dept. of Chemistry

Abstract

The efficiency of the synthesized zeolite NaY from rice husk ash (RHA) in the removal of Cr(III) from aqueous solution was studied. Zeolite NaY was synthesized from RHA via seeding technique and the identification of its structure was by X-ray diffraction (XRD) technique and the elemental analysis was carried out by X-ray fluorescence (XRF). physicochemical properties which were related to the use of the zeolite NaY as a sorbent was also investigated. synthesized zeolite NaY has higher cation exchange capacity (CEC) than the commercial zeolite NaY due to the higher amount of sodium content in the synthesized as well as the lower ratio of silica to alumina. The synthesized zeolite together with the commercial one as comparison was used in the sorption of the Cr(III) in aqueous solution by batch sorption experiments. The kinetic study showed that the Cr(III) uptake by both zeolites were based on the pseudo second
order model. Synthesized zeolite NaY exhibited greater sorption capacities than the commercial zeolite NaY since
former has higher surface area and cation exchange capacity (CEC) and lower ratio of silica to alumina which have tendency to provide more exchange sites.

Keberkesanan zeolit NaY yang disintesis daripada abu sekam padi (RHA) untuk menyingkirkan kromium(III) dalam larutan
akueus telah dikaji. Zeolit NaY disintesis daripada RHA melalui kaedah pembenihan dan strukturnya dianalisis melalui teknik pembelauan sinar-X (XRD) dan analisis unsur dijalankan melalui teknik sinar-X berpendarflour (XRF). Sifat-fisiko-kimia yang berkaitan dengan penggunaan zeolit NaY sebagai penjerap juga dikaji. Zeolit NaY yang disintesis mempunyai kapasiti penukaran kation (CEC) yang lebih tinggi daripada zeolit NaY komersil disebabkan oleh kandungan natrium yang lebih tinggi kuantitinya dan nisbah silika terhadap alumina yang lebih rendah. Zeolit NaY yang telah disintesis dan zeolit NaY komersil yang dijadikan sebagai perbandingan digunakan untuk menjerap kromium(III) dalam larutan akueus melalui eksperimen secara berkelompok. Kajian kinetik pengambilan kromium(III) oleh kedua-dua zeolit adalah berdasarkan kepada model pseudo-tertib kedua. Zeolit NaY yang disintesis menunjukkan kapasiti penjerapan adalah lebih tinggi berbanding zeolit NaY komersil kerana zeolit NaY yang disintesis mempunyai luas permukaan dan kapasiti penukaran kation (CEC) yang lebih tinggi dan nisbah silika terhadap alumina yang lebih rendah yang menyebabkan berkecenderungan untuk mempunyai lebih banyak tapak penukaran.

Item Type:Journal
Additional Information:The study was funded by MOSTE (IRPA 09-02-0057 SR0005/09-9).
Keywords:Zeolite NaY, Cr(III), Kinetic Study
Subjects:Z Bibliography. Library Science. Information Resources
ID Code:1013

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