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Effectively auto-regulated adsorption and recovery of rare earth elements via an engineered E coli

J Hazard Mater. 2021-10; 
Xiaoman Xie, Xirui Tan, Yiyan Yu, Yunchong Li, Pengbo Wang, Yuanhao Liang, Yunjun Yan
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Gene Synthesis … cells onto the silica column surface through overexpressed Si-tag, a high recovering efficiency (> 90%) of Tb desorption could be obtained with 3 bed volumes of citrate solution. In addition, the engineered cells … pmrC were synthesized by GenScript company and inserted into … Get A Quote

摘要

Conventional mining processes of rare earth elements (REEs) usually produce REEs-rich industrial waterwastes, which leads to a significant waste of REEs resources and causes serious environmental pollution. Biosorption using engineered microorganisms is an attractive technology for the recovery of REEs from aqueous solution. To regulate the REEs' adsorption and recovery by sensing extraneous REEs, an engineered cascaded induction system, pmrCAB operon containing a lanthanide-binding tag (LBT) for sensing REEs, was incorporated into E. coli in conjunction with a silica-binding protein (Si-tag) and dLBT anchored onto the cell membrane. The sensing and adsorption capacities for Terbium (Tb), a typical study subjec... More

关键词

Biosorption and recovery, Lanthanide-binding tag, Rare earth elements, Silica-binding protein, pmrCAB operon
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