title: Removal of CdTe in acidic media by magnetic ion-exchange resin: a potential recycling methodology for cadmium telluride photovoltaic waste.
abstract: Sulfonated magnetic microspheres (PSt-DVB-SNa MPs) have been successfully prepared as adsorbents via an aqueous suspension polymerization of styrene-divinylbenzene and a sulfonation reaction successively. The resulting adsorbents were confirmed by means of Fourier transform infrared spectra (FT-IR), X-ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscope equipped with an energy dispersive spectrometer (SEM-EDS) and vibrating sample magnetometer (VSM). The leaching process of CdTe was optimized, and the removal efficiency of Cd and Te from the leaching solution was investigated. The adsorbents could directly remove all cations of Cd and Te from a highly acidic leaching solution of CdTe. The adsorption process for Cd and Te reached equilibrium in a few minutes and this process highly depended on the dosage of adsorbents and the affinity of sulfonate groups with cations. Because of its good adsorption capacity in strong acidic media, high adsorbing rate, and efficient magnetic separation from the solution, PSt-DVB-SNa MPs is expected to be an ideal material for the recycling of CdTe photovoltaic waste.
authors.affiliation: Key Laboratory of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China. Electronic address: zhangteng@mail.iee.ac.cn.
authors.forename: Teng
authors.initials: T
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Zebin
authors.initials: Z
authors.lastname: Dong
authors.affiliation: Key Laboratory of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Qu
authors.affiliation: Key Laboratory of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Fazhu
authors.initials: F
authors.lastname: Ding
authors.affiliation: Key Laboratory of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Xingyu
authors.initials: X
authors.lastname: Peng
authors.affiliation: Key Laboratory of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Hongyan
authors.initials: H
authors.lastname: Wang
authors.affiliation: Key Laboratory of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Hongwei
authors.initials: H
authors.lastname: Gu
mesh_terms: D000143:Acids; D000327:Adsorption; D019187:Cadmium Compounds / Q000302:isolation & purification*; D059029:Electronic Waste / Q000032:analysis*; D007220:Industrial Waste / Q000517:prevention & control*; D007475:Ion Exchange Resins; D007700:Kinetics; D008280:Magnetics; D008855:Microscopy, Electron, Scanning; D008863:Microspheres; D010316:Particle Size; D012666:Semiconductors; D013691:Tellurium / Q000302:isolation & purification*; D013816:Thermodynamics
chemical_list: D000143:Acids; D019187:Cadmium Compounds; D007220:Industrial Waste; D007475:Ion Exchange Resins; D013691:Tellurium; C028337:cadmium telluride
keywords: Cadmium telluride; Ion-exchange resins; Magnetic microsphere; Magnetic separation