000101604 001__ 101604 000101604 005__ 20210902121816.0 000101604 0247_ $$2doi$$a10.1002/ejic.202000261 000101604 0248_ $$2sideral$$a118239 000101604 037__ $$aART-2020-118239 000101604 041__ $$aeng 000101604 100__ $$aAsensio, M.P. 000101604 245__ $$aHigh Recovery of Selenium from Kesterite-Based Photovoltaic Cells 000101604 260__ $$c2020 000101604 5060_ $$aAccess copy available to the general public$$fUnrestricted 000101604 5203_ $$aThe use of photovoltaic cells is constantly increasing and, in particular, a new generation of thin-film photovoltaic (PV) cells is under development. The absorber of these new cells, kesterite (CZT(S)Se), is composed of abundant chemical elements. Nonetheless, the development of the recycling process for these elements is indispensable for circular economy. This research is focused on the recovery of selenium by thermal oxidation and subsequent reduction. Thus, recycling of selenium has been firstly studied on synthetic kesterite and then validated in a real sample of kesterite extracted from glass-based PV cells. The best results were obtained in a vertical tubular furnace at 750 °C with an input of 20 mL/min of air. The posterior reduction process of selenium oxide was achieved by ascorbic acid, a common and economic reagent. Real kesterite was extracted from PV cells by thermal treatment at 90 °C for 1 hour to remove the encapsulant and ulterior treatment with HCl for the release of kesterite absorber. Optimal conditions from synthetic kesterite were applied to a real sample, recovering more than 90 % of selenium with a purity of 99.4 %. 000101604 536__ $$9info:eu-repo/grantAgreement/EC/H2020/720907/EU/Scientists look to the Earth’s crust to securely advance PV technology/STARCELL$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 720907-STARCELL 000101604 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/ 000101604 590__ $$a2.524$$b2020 000101604 591__ $$aCHEMISTRY, INORGANIC & NUCLEAR$$b20 / 45 = 0.444$$c2020$$dQ2$$eT2 000101604 592__ $$a0.667$$b2020 000101604 593__ $$aInorganic Chemistry$$c2020$$dQ2 000101604 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000101604 700__ $$0(orcid)0000-0002-6674-7364$$aAbás, E. 000101604 700__ $$aPinilla, J.L. 000101604 700__ $$0(orcid)0000-0002-5801-3352$$aLaguna, M. 000101604 773__ $$g2020, 22 (2020), 2203-2209$$pEur. j. inorg. chem.$$tEuropean Journal of Inorganic Chemistry$$x1434-1948 000101604 8564_ $$s560428$$uhttps://zaguan.unizar.es/record/101604/files/texto_completo.pdf$$yPostprint 000101604 8564_ $$s1048640$$uhttps://zaguan.unizar.es/record/101604/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint 000101604 909CO $$ooai:zaguan.unizar.es:101604$$particulos$$pdriver 000101604 951__ $$a2021-09-02-10:05:08 000101604 980__ $$aARTICLE