Biological beneficiation of kaolin: A review on iron removal

摘要: Abstract Application of mineral bio-beneficiation to remove iron oxyhydroxides from kaolinite clays has been the center interest in recent decades, and many research works over world have dedicated study potential this approach for upgrading clay whiteness refractoriness while preserving inherent specifications therefore improving commercial value kaolin. Microbial purification methods are preferred since they environmentally benign (neither use nor release hazardous chemicals), not energy intensive, low initial operational costs, preserve crystal structure clay. The present review offers general concepts fundamentals process along with an outline critical assessment latest studies carried out on biological dissolution clays.