Arsenic Retention on Technosols Prepared with Nanoparticles and Ferric Soil from Mine Drainage Water
Mining activities generate a large amount of solid waste and acid drains that contain heavy metals in high concentrations. In wastewater of gold mines from Southern Ecuador (Portovelo), arsenic concentrations between 4.8 and 27.5 μg/L have been detected. In this context, the objective of this study...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Journal of Nanotechnology |
| Online Access: | http://dx.doi.org/10.1155/2018/6840856 |
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| author | Darío R. Bolaños-Guerrón Viviana P. Sánchez-Gómez Johanna Paz Andrés R. Izquierdo Carina Stael María Balseiro-Romero |
| author_facet | Darío R. Bolaños-Guerrón Viviana P. Sánchez-Gómez Johanna Paz Andrés R. Izquierdo Carina Stael María Balseiro-Romero |
| author_sort | Darío R. Bolaños-Guerrón |
| collection | DOAJ |
| description | Mining activities generate a large amount of solid waste and acid drains that contain heavy metals in high concentrations. In wastewater of gold mines from Southern Ecuador (Portovelo), arsenic concentrations between 4.8 and 27.5 μg/L have been detected. In this context, the objective of this study is to prepare a technosol, which was used in the capture of arsenic dissolved in the acid drains. Technosol was elaborated using a clay-silty soil (iron-rich soil), collected in the mining area, and iron nanoparticles synthetized with the extract of orange peel. The technosol was experimentally characterized using adsorption isotherms and uptake kinetics. Besides, a mathematical model was developed using Vensim® to scale the process and predict the dynamic behavior of the adsorbent. Results indicate that adsorption behavior of technosol can be fitted to Langmuir isotherms (R2 > 0.9), with 95% of adsorption of As from an input of 4.5 mg/L. The model will be useful to predict the time needed to remedy contaminated water and the duration of the adsorbent (until its saturation). |
| format | Article |
| id | doaj-art-409514d99a86405ea031c5878aabe7a9 |
| institution | Kabale University |
| issn | 1687-9503 1687-9511 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Nanotechnology |
| spelling | doaj-art-409514d99a86405ea031c5878aabe7a92025-02-03T05:45:39ZengWileyJournal of Nanotechnology1687-95031687-95112018-01-01201810.1155/2018/68408566840856Arsenic Retention on Technosols Prepared with Nanoparticles and Ferric Soil from Mine Drainage WaterDarío R. Bolaños-Guerrón0Viviana P. Sánchez-Gómez1Johanna Paz2Andrés R. Izquierdo3Carina Stael4María Balseiro-Romero5Centro de Nanociencia y Nanotecnología (CENCINAT), Universidad de las Fuerzas Armadas ESPE, Av. Gral. Rumiñahui s/n, P.O. Box 171-5-231B, Sangolquí, EcuadorDepartment of Earth Science and Constructions, Geographical and Environmental Engineering, Universidad de las Fuerzas Armadas ESPE, Sangolquí, EcuadorDepartment Life Science and Agriculture, Universidad de las Fuerzas Armadas ESPE, Sangolquí, EcuadorCentro de Nanociencia y Nanotecnología (CENCINAT), Universidad de las Fuerzas Armadas ESPE, Av. Gral. Rumiñahui s/n, P.O. Box 171-5-231B, Sangolquí, EcuadorCentro de Nanociencia y Nanotecnología (CENCINAT), Universidad de las Fuerzas Armadas ESPE, Av. Gral. Rumiñahui s/n, P.O. Box 171-5-231B, Sangolquí, EcuadorDepartment of Chemical Engineering, Centre for Research in Environmental Technologies (CRETUS), Universidade de Santiago de Compostela, Santiago, SpainMining activities generate a large amount of solid waste and acid drains that contain heavy metals in high concentrations. In wastewater of gold mines from Southern Ecuador (Portovelo), arsenic concentrations between 4.8 and 27.5 μg/L have been detected. In this context, the objective of this study is to prepare a technosol, which was used in the capture of arsenic dissolved in the acid drains. Technosol was elaborated using a clay-silty soil (iron-rich soil), collected in the mining area, and iron nanoparticles synthetized with the extract of orange peel. The technosol was experimentally characterized using adsorption isotherms and uptake kinetics. Besides, a mathematical model was developed using Vensim® to scale the process and predict the dynamic behavior of the adsorbent. Results indicate that adsorption behavior of technosol can be fitted to Langmuir isotherms (R2 > 0.9), with 95% of adsorption of As from an input of 4.5 mg/L. The model will be useful to predict the time needed to remedy contaminated water and the duration of the adsorbent (until its saturation).http://dx.doi.org/10.1155/2018/6840856 |
| spellingShingle | Darío R. Bolaños-Guerrón Viviana P. Sánchez-Gómez Johanna Paz Andrés R. Izquierdo Carina Stael María Balseiro-Romero Arsenic Retention on Technosols Prepared with Nanoparticles and Ferric Soil from Mine Drainage Water Journal of Nanotechnology |
| title | Arsenic Retention on Technosols Prepared with Nanoparticles and Ferric Soil from Mine Drainage Water |
| title_full | Arsenic Retention on Technosols Prepared with Nanoparticles and Ferric Soil from Mine Drainage Water |
| title_fullStr | Arsenic Retention on Technosols Prepared with Nanoparticles and Ferric Soil from Mine Drainage Water |
| title_full_unstemmed | Arsenic Retention on Technosols Prepared with Nanoparticles and Ferric Soil from Mine Drainage Water |
| title_short | Arsenic Retention on Technosols Prepared with Nanoparticles and Ferric Soil from Mine Drainage Water |
| title_sort | arsenic retention on technosols prepared with nanoparticles and ferric soil from mine drainage water |
| url | http://dx.doi.org/10.1155/2018/6840856 |
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