Abstract
The performance and mechanisms of a microbial induced calcite precipitation (MICP)-assisted mature fine tailings (MFT) consolidation method was assessed. Mature fine tailings samples of 35 wt% and 60 wt% were treated with MICP by ureolysis. The undrained shear strength of treated MFT was measured to evaluate the effects of MICP on MFT consolidation. To investigate the surface interaction mechanisms involved in the process, the size and shape of MFT particles were observed using scanning electron microscopy. The results showed that ureolysis-driven MICP can accelerate raw MFT consolidation, leaving compact sludge with significantly enhanced shear strength within 24 h of the experiment.
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