Adsorption of impurities from nickel-plating baths using commercial sorbents to reduce wastewater discharges
| Autor: | Miguel A. Montes-Morán, Vanesa Anahi Pérez Jiménez, Virginia Hernández-Montoya, Rigoberto Tovar-Gómez, Florianne Castillo-Borja, Luis A. Ramírez-Montoya |
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| Přispěvatelé: | Ministerio de Economía, Industria y Competitividad (España), Principado de Asturias, Ramírez Montoya, Luis Adrián, Montes Morán, Miguel Ángel, Ramírez Montoya, Luis Adrián [0000-0002-3595-9663], Montes Morán, Miguel Ángel [0000-0002-8791-5582] |
| Jazyk: | Galician |
| Rok vydání: | 2021 |
| Předmět: |
Environmental Engineering
Materials science Metal ions in aqueous solution 0208 environmental biotechnology chemistry.chemical_element 02 engineering and technology Wastewater 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences Adsorption Nickel Plating Nickel-plating Metal ions Electroplating Waste Management and Disposal 0105 earth and related environmental sciences Bone char Water Baths General Medicine 020801 environmental engineering chemistry Chemical engineering Molecular simulation Water Pollutants Chemical Black spot |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | The presence of moderate concentrations of impurities in the nickel-plating baths generates failures on the coated pieces. This situation entails the necessity of replacing the electroplating bath, which implies the generation of large volumes of wastewater with metallic species and high quantity of sludge. For this reason, the adsorption of the principal impurities of nickel-plating baths of an industry was analyzed in this work. Particularly, the removal of Zn2+ was studied in more detail since the presence of this metal in the baths generates black spots on the coated pieces. Different commercial materials were used as adsorbents and Zn2+ adsorption studies were carried out using both standard solutions and industrial water from the nickel-plating baths. All the adsorption tests were performed in batch systems under constant agitation and the quantification of the impurities was made by ICP-MS analysis. The bone char (BC) was an efficient adsorbent for the removal of the principal impurities of nickel-plating baths. The use of molecular simulation tools helped to understand the preferences of the hydroxyapatite (the principal component of bone char) for different metallic ions present in the industrial waters. According to both the experimental adsorption and molecular simulation results, hydroxyl and phosphate groups of bone char are responsible of the adsorption of impurities of nickel-plating baths. This work was supported by TECNM (7949.20-P), Ministerio de Economía, Industria y Competitividad, Spain (CTQ 2017-87820-R) and PCTI-Asturias/ FEDER, Spain, EU (IDI/2018/000118) projects. MC. Pérez-Jiménez acknowledges the grant (857757) received from CONACyT. L.A. Ramírez-Montoya thanks CONACyT for a post-doctoral grant (CVU No 330625, 2017). |
| Databáze: | OpenAIRE |
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