Biostimulation of carbonate precipitation process in soil for copper immobilization.

•Biostimulation was adopted for the first time in accelerating MICP in Cu immobilization in soil.•MiSeq Illumina sequencing confirmed significant number and types of ureolytic bacteria in soil.•Soluble-exchangeable fraction of Cu decreased from 45.54 mg kg−1 to 1.55 mg kg−1 in soil.•Biostimulation induced carbonate precipitation was characterized in Cu immobilization.