Development of novel biosorption based on design of cell surfaces for separation of rare earth metals

2015 Fiscal Year Final Research Report

• Project/Area Number: 26630394
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Properties in chemical engineering process/Transfer operation/Unit operation
• Research Institution: Kyushu University
• Principal Investigator: Goto Masahiro 九州大学, 工学(系)研究科(研究院), 教授 (10211921)
• Co-Investigator(Kenkyū-buntansha): KUBOTA FUKIKO 九州大学, 工学研究院, 助教 (60294899)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 吸着分離 / 希土類分離 / レアメタル / リサイクル / バイオソープション / イオン交換 / 吸着剤 / 生物吸着

Outline of Final Research Achievements

Biosorption has recently attracted much attention as an alternative to conventional techniques for the recovery of rare earth elements (REEs). In this study, the surface of Escherichia coli (E. coli) was chemically modified to improve its performance as a biosorbent for REEs. The diglycolic amic acid group, which shows high affinity to REEs, was introduced by succinylation of the amine groups on the surface of the E. coli. Adsorption curves using the chemically modified E. coli were characteristic of the diglycolic amic acid group. The adsorption performance for transition metal ions was not affected by the chemical modification. These results suggest that modification of E. coli with a functional group with high affinity to REEs increases the effectiveness of adsorption. The maximum uptakes of REEs on the modified E. coli were increased to double. Chemical modification of E. coli is an effective method for enhancing the adsorption performance for REEs.

Free Research Field

分離工学