Alum Production from some Nigerian Kaolinite Deposits

Abstract:

The Development of Sustainable Processing Technologies for the Vast Mineral Resources Available in Nigeria and their Varied Applications Is a Major Pursuit by the Federal Ministry of Science and Technology. in this Work, Alum Was Produced from Three Different Kaolin Deposits in Nigeria Namely Kankara Brown, Bauchi and Kankara White by Acid Dealumination of the Metakaolin Obtained by Calcination of the Beneficiated Kaolinites and the Yields Were Measured to Ascertain the Process Repeatability. the Reproducibility Studies Carried Out on Samples from each Deposit Showed a Mean Yield of 80 %, 92 % and 87 % and Standard Deviation of 2.50 %, 1.063 % and 1.296 %, for Kankara Brown, Bauchi and Kankara White Respectively. the Values from the Three Deposits Fall within 3 Standard Deviations of the Mean in Accordance with the 68-95-99.7/three-Sigma Rule. the Alum Quality Also Compares Well with Available Commercial Alums in the Market. BET Analysis, of the Alumina Obtained by Calcination of the Alum (Kankara White), Gave a Surface Area of 192.2441m2/g Comparable to Commercial Alumina. these Results Suggest/establishes the Huge Possibility of Commercial Alum Production, Including Alumina, Using Kaolinite Clay from these Deposits as Starting Materials.

• Periodical: International Journal of Engineering Research in Africa (Volume 7)
• Pages: 13-19
• DOI: https://doi.org/10.4028/www.scientific.net/JERA.7.13
• Online since: September 2012
• Authors: Lawrence Chukwuka Edomwonyi-Otu, B.O. Aderemi, O. Edomwonyi-Otu, A. Simo, M. Maaza
• Keywords: Alum, Dealumination, Kaolinite, Normal Distribution, Reproducibility, Standard Deviation

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