Mature fine tailings consolidation through microbial induced calcium carbonate precipitation-Reference-Cited by-同舟云学术

Mature fine tailings consolidation through microbial induced calcium carbonate precipitation

Published:2015-11 Issue:11 Volume:42 Page:975-978
ISSN:0315-1468
Container-title:Canadian Journal of Civil Engineering
language:en
Short-container-title:Can. J. Civ. Eng.

Author:

Liang Jiaming¹¹,Guo Zhengyang¹¹,Deng Lijun¹¹,Liu Yang¹¹

Affiliation:

1. Department of Civil and Environmental Engineering, University of Alberta, 9211 – 116 St. NW, Edmonton, AB T6G 1H9, Canada.

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.

Publisher

Canadian Science Publishing

Subject

General Environmental Science,Civil and Structural Engineering

Link

http://www.nrcresearchpress.com/doi/pdf/10.1139/cjce-2015-0069

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