Testing the Capacity of Staphylococcus equorum for Calcium and Copper Removal through MICP Process

This research focused on the evaluation of potential use a soil-isolated bacteria, identified as Staphylococcus equorum, for microbial-induced calcite precipitation (MICP) and copper removal. Isolated bacteria were characterized considering growth rate, urease activity, calcium carbonate precipitation, tolerance minimum inhibitory concentration (MIC) precipitation. Results compared with Sporosarcina pasteurii, which is considered model strain MICP processes. The results indicated that S. equorum had lower removal capacity than pasteurii strain. However, culture conditions tested in this study did not consider halophilic feature could make it promising bacterial to be applied process water from mining operations when seawater used water. On other hand, was insufficient applying any strains evaluated, most likely due formation copper–ammonia complex. Thus, implementation needs further studied, optimization conditions, may promote better performance calcium, or metals