Performance of packed - bed corncob (Zea mays) in the removal of iron contained in acid mine drainage
The ability of corncob (Zea mays) to remove iron contained in acidic mine drains (AMD) from coal in laboratory-scale packed bed reactors was evaluated. The tests had an effluent filtering phase, through the bed, at a flow rate of 5 mL×min-1 and a column wash, with distilled water, in order to remove...
| Main Authors: | , , , , |
|---|---|
| Format: | Online |
| Language: | spa |
| Published: |
Universidad Pedagógica y Tecnológica de Colombia
2020
|
| Subjects: | |
| Online Access: | https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/11279 |
| _version_ | 1801706347090149376 |
|---|---|
| author | Hernández, Angie Lorena Vásquez-Ochoa, Olga Yaneth Roldan-García, Fabio Augusto Lobo, Jairo Antonio Cubillos Pineda, Gerardo Andrés Caicedo |
| author_facet | Hernández, Angie Lorena Vásquez-Ochoa, Olga Yaneth Roldan-García, Fabio Augusto Lobo, Jairo Antonio Cubillos Pineda, Gerardo Andrés Caicedo |
| author_sort | Hernández, Angie Lorena |
| collection | OJS |
| description | The ability of corncob (Zea mays) to remove iron contained in acidic mine drains (AMD) from coal in laboratory-scale packed bed reactors was evaluated. The tests had an effluent filtering phase, through the bed, at a flow rate of 5 mL×min-1 and a column wash, with distilled water, in order to remove weakly adsorbed material. The variables evaluated were: (i) modification of the corncob with sodium hydroxide (NaOH) or citric acid (C₆H₈O₇) and (ii) iron concentration in the AMD of 500 ppm, 1,000 ppm and 2,000 ppm. At the same time, trials were performed at the same conditions, but, with washes of distilled water to the corncob, each 400 mL of filtered AMD, in order to avoid saturation of the system. The treated effluent was monitored every 80 min through pH and iron measurements (atomic absorption spectroscopy). The biomasses were physicochemically characterized at the beginning and at the end of the process using FTIR. Overall, the pH of AMD played an key role in the metal removal capacity and better iron removal percentages are obtained using NaOH modified marlo, including sporadic washes during the process. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-11279 |
| institution | Revista Ciencia en Desarrollo |
| language | spa |
| publishDate | 2020 |
| publisher | Universidad Pedagógica y Tecnológica de Colombia |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-112792021-05-25T16:02:08Z Performance of packed - bed corncob (Zea mays) in the removal of iron contained in acid mine drainage Desempeño de reactores empacados con marlo de maíz (Zea mays) en la remoción de hierro contenido en drenajes ácidos de mina Hernández, Angie Lorena Vásquez-Ochoa, Olga Yaneth Roldan-García, Fabio Augusto Lobo, Jairo Antonio Cubillos Pineda, Gerardo Andrés Caicedo Acondicionamiento químico, adsorción, biomasa, mina de carbón, remediación. Chemical conditioning, adsorption, biomass, coal mine, remediation. The ability of corncob (Zea mays) to remove iron contained in acidic mine drains (AMD) from coal in laboratory-scale packed bed reactors was evaluated. The tests had an effluent filtering phase, through the bed, at a flow rate of 5 mL×min-1 and a column wash, with distilled water, in order to remove weakly adsorbed material. The variables evaluated were: (i) modification of the corncob with sodium hydroxide (NaOH) or citric acid (C₆H₈O₇) and (ii) iron concentration in the AMD of 500 ppm, 1,000 ppm and 2,000 ppm. At the same time, trials were performed at the same conditions, but, with washes of distilled water to the corncob, each 400 mL of filtered AMD, in order to avoid saturation of the system. The treated effluent was monitored every 80 min through pH and iron measurements (atomic absorption spectroscopy). The biomasses were physicochemically characterized at the beginning and at the end of the process using FTIR. Overall, the pH of AMD played an key role in the metal removal capacity and better iron removal percentages are obtained using NaOH modified marlo, including sporadic washes during the process. Se evaluó la capacidad del marlo de maíz (Zea mays) para remover hierro contenido en drenajes ácidos de mina (DAM) de carbón, en reactores de lecho empacado, a escala laboratorio. Los ensayos tuvieron una fase de filtrado de efluente, a través del lecho, a un caudal de 5 mL×min-1 y un lavado de columna, con agua destilada, a fin de remover lo débilmente retenido por la biomasa. Las variables evaluadas fueron: (i) modificación del marlo con hidróxido de sodio (NaOH) o ácido cítrico (C₆H₈O₇) y (ii) concentración de hierro en el DAM de 500 ppm, 1,000 ppm y 2,000 ppm. Simultáneamente, se hicieron ensayos, bajo las mismas condiciones, pero, con lavados de agua destilada al marlo, cada 400 mL de DAM filtrado, con el fin de evitar la saturación del sistema. El efluente tratado se monitoreó mediante mediciones de pH y hierro (espectroscopia de absorción atómica). Las biomasas se caracterizaron fisicoquímicamente, al iniciar y al finalizar el proceso, mediante espectroscopia infrarroja con transformada de Fourier (FTIR). En general, el pH del DAM jugó un papel muy importante en la capacidad de remoción del metal y se obtuvo mejores porcentajes de remoción de hierro utilizando marlo modificado con NaOH, incluyendo lavados esporádicos durante el proceso. Universidad Pedagógica y Tecnológica de Colombia 2020-06-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Text Texto application/pdf https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/11279 10.19053/01217488.v11.n2.2020.11279 Ciencia En Desarrollo; Vol. 11 No. 2 (2020): Vol 11, Núm.2 (2020): Julio-Diciembre; 191-209 Ciencia en Desarrollo; Vol. 11 Núm. 2 (2020): Vol 11, Núm.2 (2020): Julio-Diciembre; 191-209 2462-7658 0121-7488 spa https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/11279/10294 Derechos de autor 2020 CIENCIA EN DESARROLLO |
| spellingShingle | Acondicionamiento químico, adsorción, biomasa, mina de carbón, remediación. Chemical conditioning, adsorption, biomass, coal mine, remediation. Hernández, Angie Lorena Vásquez-Ochoa, Olga Yaneth Roldan-García, Fabio Augusto Lobo, Jairo Antonio Cubillos Pineda, Gerardo Andrés Caicedo Performance of packed - bed corncob (Zea mays) in the removal of iron contained in acid mine drainage |
| title | Performance of packed - bed corncob (Zea mays) in the removal of iron contained in acid mine drainage |
| title_alt | Desempeño de reactores empacados con marlo de maíz (Zea mays) en la remoción de hierro contenido en drenajes ácidos de mina |
| title_full | Performance of packed - bed corncob (Zea mays) in the removal of iron contained in acid mine drainage |
| title_fullStr | Performance of packed - bed corncob (Zea mays) in the removal of iron contained in acid mine drainage |
| title_full_unstemmed | Performance of packed - bed corncob (Zea mays) in the removal of iron contained in acid mine drainage |
| title_short | Performance of packed - bed corncob (Zea mays) in the removal of iron contained in acid mine drainage |
| title_sort | performance of packed bed corncob zea mays in the removal of iron contained in acid mine drainage |
| topic | Acondicionamiento químico, adsorción, biomasa, mina de carbón, remediación. Chemical conditioning, adsorption, biomass, coal mine, remediation. |
| topic_facet | Acondicionamiento químico, adsorción, biomasa, mina de carbón, remediación. Chemical conditioning, adsorption, biomass, coal mine, remediation. |
| url | https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/11279 |
| work_keys_str_mv | AT hernandezangielorena performanceofpackedbedcorncobzeamaysintheremovalofironcontainedinacidminedrainage AT vasquezochoaolgayaneth performanceofpackedbedcorncobzeamaysintheremovalofironcontainedinacidminedrainage AT roldangarciafabioaugusto performanceofpackedbedcorncobzeamaysintheremovalofironcontainedinacidminedrainage AT lobojairoantoniocubillos performanceofpackedbedcorncobzeamaysintheremovalofironcontainedinacidminedrainage AT pinedagerardoandrescaicedo performanceofpackedbedcorncobzeamaysintheremovalofironcontainedinacidminedrainage AT hernandezangielorena desempenodereactoresempacadosconmarlodemaizzeamaysenlaremociondehierrocontenidoendrenajesacidosdemina AT vasquezochoaolgayaneth desempenodereactoresempacadosconmarlodemaizzeamaysenlaremociondehierrocontenidoendrenajesacidosdemina AT roldangarciafabioaugusto desempenodereactoresempacadosconmarlodemaizzeamaysenlaremociondehierrocontenidoendrenajesacidosdemina AT lobojairoantoniocubillos desempenodereactoresempacadosconmarlodemaizzeamaysenlaremociondehierrocontenidoendrenajesacidosdemina AT pinedagerardoandrescaicedo desempenodereactoresempacadosconmarlodemaizzeamaysenlaremociondehierrocontenidoendrenajesacidosdemina |
