Recovery of rare earth elements from wastewater towards a circular economy
| Autor: | Verónica Rocha, Ziva Vipotnik, Bruna Silva, Lara Costa, Ana Elisa Marques Lago, Óscar Barros, Filomena Costa, Teresa Tavares |
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| Přispěvatelé: | Universidade do Minho |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
kemija
Pharmaceutical Science 02 engineering and technology Wastewater 010501 environmental sciences 01 natural sciences 7. Clean energy Analytical Chemistry Desorption Drug Discovery Lanthanum zeolite Zeolite zeoliti Chemistry Bacillus cereus Cerium 021001 nanoscience & nanotechnology 6. Clean water bakterije rare earth element Chemistry (miscellaneous) Zeolites Molecular Medicine 0210 nano-technology biosorption Sorbent udc:54 Industrial Waste chemistry.chemical_element Article Water Purification 12. Responsible consumption lcsh:QD241-441 kemija odpadne vode zeoliti bakterije Adsorption lcsh:Organic chemistry Rare earth element Physical and Theoretical Chemistry odpadne vode 0105 earth and related environmental sciences Science & Technology Organic Chemistry Biosorption Kinetics Chemical engineering adsorption 13. Climate action Metals Rare Earth Water Pollutants Chemical |
| Zdroj: | Molecules, vol. 24, no. 6, pp. 1-25, 2019. Molecules Molecules, Vol 24, Iss 6, p 1005 (2019) Volume 24 Issue 6 Molecules, str. 1-25 : Ilustr., Vol. 24, iss. 6, 2019 COBISS-ID: 18462981 Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| ISSN: | 1420-3049 |
| Popis: | The use of rare earth elements is a growing trend in diverse industrial activities, leading to the need for eco-friendly approaches to their efficient recovery and reuse. The aim of this work is the development of an environmentally friendly and competitive technology for the recovery of those elements from wastewater. Kinetic and equilibria batch assays were performed with zeolite, with and without bacterial biofilm, to entrap rare earth ions from aqueous solution. Continuous assays were also performed in column setups. Over 90% removal of lanthanum and cerium was achieved using zeolite as sorbent, with and without biofilm, decreasing to 70% and 80%, respectively, when suspended Bacillus cereus was used. Desorption from the zeolite reached over 60%, regardless of the tested conditions. When in continuous flow in columns, the removal yield was similar for all of the rare earth elements tested. Lanthanum and cerium were the elements most easily removed by all tested sorbents when tested in single- or multi-solute solutions, in batch and column assays. Rare earth removal from wastewater in open setups is possible, as well as their recovery by desorption processes, allowing a continuous mode of operation. This study was supported by the Portuguese Foundation for Science and Technology (FCT) under the scope of the research project PTDC/AAG-TEC/5269/2014, the strategic funding of UID/BIO/04469/2013 unit and BioTecNorte operation (NORTE-01-0145-FEDER-000004) funded by the European Regional Development Fund under the scope of Norte2020 - Programa Operacional Regional do Norte, Portugal. info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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