Study of Chemical Leaching of Aluminum from Red Mud

Behera , Abhilekh (2015) Study of Chemical Leaching of Aluminum from Red Mud. BTech thesis.



In this project work red mud was utilized for study of aluminium extraction using acid leachates. Both organic and inorganic acids were used in the chemical leaching experiments. Sulphuric acid, Citric acid and Oxalic acid were used for leaching individually or in combined form with different ratios. High quantities of red mud is generated by alumina industries as a waste product which is generally stockpiled in open area leading to soil, air and water pollution because of its caustic nature. Red mud sample was collected from Vedanta Alumina Ltd, lanjhigarh (Odisha) and various constituents were analysed. Since aluminium is present nearly 8 % in the red mud , so if economically viable process is used to extract the aluminium then the extracted aluminium can further be used in the alumina industries. From observation it was seen that highest percentage of aluminium was solubilised with acid mixtures of citric acid and oxalic acid taken together in 2:1 ratio. Further it was found out that the extraction is better in the room temperature and low pH.

Item Type:Thesis (BTech)
Uncontrolled Keywords:Red Mud, Acid Leachates, Aluminum Solubilisation, PH, Temperature
Subjects:Engineering and Technology > Chemical Engineering > Environmental Engineering
Divisions: Engineering and Technology > Department of Chemical Engineering
ID Code:7141
Deposited By:Mr. Sanat Kumar Behera
Deposited On:03 Mar 2016 10:19
Last Modified:03 Mar 2016 10:19
Supervisor(s):Mishra, S

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