Highly selective adsorption of rhenium by amyloid-like protein material  

作　　者：MUHAMMAD Arif YANG QingMin KANWAL Aisha ZHAO Jian NAWAZ Mohsan REN Hao YANG Peng 

机构地区：[1]Key Laboratory of Applied Surface and Colloid Chemistry,Ministry of Education [2]Xi’an Key Laboratory of Polymeric Soft Matter,International Joint Research Center on Functional Fiber and Soft Smart Textile,School of Chemistry and Chemical Engineering,Shaanxi Normal University,Xi’an,710119,China [3]School of Chemistry and Chemical Engineering,Northwestern Polytechnical University,Xi’an,710072,China

出　　处：《Science China(Technological Sciences)》2024年第5期1417-1430,共14页中国科学（技术科学英文版）

基　　金：supported by the National Science Fund for Distinguished Young Scholars(Grant No.52225301);the National Key R&D Program of China(Grant Nos.2020YFA0710400 and 2020YFA0710402);the National Natural Science Foundation of China(Grant Nos.21905166,21875132;51903147);the 111 Project(Grant No.B14041);the Fundamental Research Funds for the Central Universities(Grant Nos.GK201801003,2020TS092,and GK202205013);the Innovation Capability Support Program of Shaanxi(Grant No.2020TD024);the Science and Technology Innovation Team of Shaanxi Province(Grant No.2022TD-35)。

摘　　要：Rhenium separation from molybdenum in molybdenite minerals and waste leachate has become an emerging challenge.Addressing this challenge,we prepared a set of protein-based alkylamine/alkylammonium salts complexes as extractants for selective uptake of rhenium from molybdenum,where the protein component turned into the insoluble amyloid-like structure when its internal disulfide bonds were reduced,namely phase-transition process.Among them,the phase-transited lysozyme and methyletrioctyleammonium chloride complex(PTL-N263)exhibited the most efficient adsorption at the alkaline condition for the electrostatic interaction between negatively charged metal ions with positively charged center(R_(4)N^(+))in N263,where negatively charged protein residues hindered the ion exchange of Cl^(-)in N263 for larger size Mo species(Mo_(7)O_(24)^(6-))than smaller size Re species(ReO^(4-)).The adsorption follows the Freundlich model and pseudo-second-order kinetics,which exhibits toplevel adsorption performance with a maximum adsorption capacity of 124 mg/g and a separation factor(β_(Re/Mo))of 2.78×10^(3)for Re.The adsorption capacity per unit area(57.2 mg/(g m^(2)))is 1.6–41 times higher than previously reported adsorbents,and the cost for adsorbing 1 g of Re(VII)is$1.07,indicating its industrial capability.This adsorption strategy can be applied to separating Re from Mo in binary solutions and industrial wastewater with other competing ions.

关 键 词：AMYLOID phase-transited lysozyme selective adsorption RHENIUM waste leachate solution 

分 类 号：TQ424[化学工程] X703[环境科学与工程—环境工程]