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|Title: ||Neutralization of Red Mud Using Mine Water|
|Authors: ||Sahu, R C|
Patel, R K
Ray, B C
|Keywords: ||Red Mud|
Mine water neutralization
Acid neutralizing capacity
|Issue Date: ||2008 |
|Citation: ||Proceedings of the Conference on Emerging Trends in Mining and Allied Industries, NIT, Rourkela (ETMAI- 2008), P 320-323|
|Abstract: ||Red mud is the byproduct of commonly used Bayer process for extraction of alumina
from bauxite ore. Globally, there are approximately 70 million tones of red mud being
produced every year. Highly alkaline red mud, usually pH ranges from 10.5−13 and
high caustic causes environmental disposal problem and their reuse. The results show
that pH of red mud decreased to standard environmental level using mines water. Sodium
ions dominated among the soluble cations, but the sodium ion concentration decreased
with increasing duration of storage time due to leaching which causes water pollution.
The acid neutralizing capacity of red mud obtained from this study was about 5.5 mol/kg.
Mine water neutralization process led to many benefits, including conservation of fresh
water due to less use of fresh water at the refinery, increasing settling rates at the red
mud pond, reduces the pH, easy to handle and reduces the cost of waste management.
The neutralized red mud can be used for other...|
|Description: ||Copyright for the paper belongs to Proceedings Publisher|
|Appears in Collections:||Conference Papers|
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