Enrichment of Terbium(III) under synergistic effect of biosorption and biomineralization by sp. DW015 and .

Unlabelled: Biosorption and biomineralization are commonly used for the immobilization of metal ions. Biosorption is commonly used as a green method to enrich rare earth ions from wastewater. However, little attention has been paid to the facilitating role of biomineralization in the enrichment of rare earth ions.

Recovery of terbium by sp. DW018 isolated from ionic rare earth tailings based on microbial induced calcium carbonate precipitation.

Microbial induced calcium carbonate precipitation (MICP) is considered as an environmentally friendly microbial-based technique to remove heavy metals. However, its application in removal and recovery of rare earth from wastewaters remains limited and the process is still less understood. In this study, a urease-producing bacterial strain DW018 was isolated from the ionic rare earth tailings and identified as based on 16S rRNA gene sequencing.

Dynamic pore structure evolution of the ion adsorbed rare earth ore during the ion exchange process.

During the leaching process of the ion-adsorbed rare earth (RE) ore, the pore structure evolution of the ore body plays a vital role in the seepage of the leaching solution. To investigate the evolution of the pore structure during the leaching process, experiments have been carried out with remodelled RE ore samples based on the physical characteristics of ores. The seepage rate difference between deionized water leaching solution and 2% NHCl leaching solution during the active leaching period was analysed.