Role of hydrazine and hydrogen peroxide in aluminium hydroxide precipitation from sodium aluminate solution

Sahu, N.K., Sarangi, C.K., Dash, B., Tripathy, B.C., Satpathy, B.K., Meyrick, D. and Bhattacharya, I.N. (2015) Role of hydrazine and hydrogen peroxide in aluminium hydroxide precipitation from sodium aluminate solution. Transactions of Nonferrous Metals Society of China, 25 (2). pp. 615-621.

Abstract

Aluminium hydroxide precipitation from synthetic sodium aluminate solution was studied in the presence of hydrazine or hydrogen peroxide. The addition of low concentration of hydrazine is found to be effective, while higher amount of hydrogen peroxide is required to generate similar effect. XRD data confirm the product phase to be gibbsitic by nature. The scanning electron micrographs (SEM) show that agglomerated products form in the presence of hydrazine while fine discrete particles are produced with hydrogen peroxide. The probable mechanism of precipitation in the presence of hydrazine and hydrogen peroxide is also discussed.

Item Type:	Journal Article
Murdoch Affiliation:	School of Engineering and Information Technology
Publisher:	Nonferrous Metals Society of China
Copyright:	© 2015 The Nonferrous Metals Society of China.
URI:	http://researchrepository.murdoch.edu.au/id/eprint/25941

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