Treatment of mining acidic leachates with indigenous limestone, Zimapan Mexico.
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| Title: | Treatment of mining acidic leachates with indigenous limestone, Zimapan Mexico. |
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| Authors: | Labastida, I.1, Armienta, M.A.2 victoria@geofisica.unam.mx, Lara-Castro, R.H.3, Aguayo, A.2, Cruz, O.2, Ceniceros, N.2 |
| Source: | Journal of Hazardous Materials. Nov2013, Vol. 262, p1187-1195. 9p. |
| Subjects: | Mineral industries, Leachate analysis, Limestone, Acid mine drainage, Calcium carbonate, Meteorological precipitation, X-ray diffraction |
| Abstract: | Abstract: An experimental study to evaluate the potential of using indigenous limestones in a passive system to treat acid mine drainage, at a mining zone of Mexico was carried out. Chemical and mineralogical characteristics of four types of native rocks (KIT1, KIT2, KSS, QZ) showed distinct CaCO3 contents. Synthetic aqueous leachates from an old tailings impoundment had a pH of 2.18, 34mg/L As, 705mg/L Fetotal, and 3975mg/L SO4 2−. To evaluate dissolution behavior of rocks, kinetic batch experiments with an acid Fe-rich solution were performed. Decaying kinetic constants adjusting H+ concentration to a first order exponential process were: KIT1 (k =2.89), KIT2 (k =0.89) and KSS (k =0.47). Infrared spectrum and XRD of precipitates showed schwertmannite formation. To determine As and heavy metals (Fe, Cd, Zn, Al) removal from the synthetic leachates, batch experiments using KIT1 were developed. Arsenic decreased from 34.00mg/L to 0.04mg/L, Fe and Al were totally removed, and concentrations of Zn and Cd decreased 88% and 91% respectively. Analyses by IR and SEM-EDS indicate that co-precipitation with Fe-Hydroxides formed upon leachate interaction with limestone is the main As removal process. Chamosite, identified by XRD may participate in the removal of Al, SiO2 and a fraction of Fe. [Copyright &y& Elsevier] |
| Copyright of Journal of Hazardous Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 91973962 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Treatment of mining acidic leachates with indigenous limestone, Zimapan Mexico. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Labastida%2C+I%2E%22">Labastida, I.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Armienta%2C+M%2EA%2E%22">Armienta, M.A.</searchLink><relatesTo>2</relatesTo><i> victoria@geofisica.unam.mx</i><br /><searchLink fieldCode="AR" term="%22Lara-Castro%2C+R%2EH%2E%22">Lara-Castro, R.H.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Aguayo%2C+A%2E%22">Aguayo, A.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Cruz%2C+O%2E%22">Cruz, O.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Ceniceros%2C+N%2E%22">Ceniceros, N.</searchLink><relatesTo>2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Hazardous+Materials%22">Journal of Hazardous Materials</searchLink>. Nov2013, Vol. 262, p1187-1195. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Mineral+industries%22">Mineral industries</searchLink><br /><searchLink fieldCode="DE" term="%22Leachate+analysis%22">Leachate analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Limestone%22">Limestone</searchLink><br /><searchLink fieldCode="DE" term="%22Acid+mine+drainage%22">Acid mine drainage</searchLink><br /><searchLink fieldCode="DE" term="%22Calcium+carbonate%22">Calcium carbonate</searchLink><br /><searchLink fieldCode="DE" term="%22Meteorological+precipitation%22">Meteorological precipitation</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+diffraction%22">X-ray diffraction</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: An experimental study to evaluate the potential of using indigenous limestones in a passive system to treat acid mine drainage, at a mining zone of Mexico was carried out. Chemical and mineralogical characteristics of four types of native rocks (KIT1, KIT2, KSS, QZ) showed distinct CaCO3 contents. Synthetic aqueous leachates from an old tailings impoundment had a pH of 2.18, 34mg/L As, 705mg/L Fetotal, and 3975mg/L SO4 2−. To evaluate dissolution behavior of rocks, kinetic batch experiments with an acid Fe-rich solution were performed. Decaying kinetic constants adjusting H+ concentration to a first order exponential process were: KIT1 (k =2.89), KIT2 (k =0.89) and KSS (k =0.47). Infrared spectrum and XRD of precipitates showed schwertmannite formation. To determine As and heavy metals (Fe, Cd, Zn, Al) removal from the synthetic leachates, batch experiments using KIT1 were developed. Arsenic decreased from 34.00mg/L to 0.04mg/L, Fe and Al were totally removed, and concentrations of Zn and Cd decreased 88% and 91% respectively. Analyses by IR and SEM-EDS indicate that co-precipitation with Fe-Hydroxides formed upon leachate interaction with limestone is the main As removal process. Chamosite, identified by XRD may participate in the removal of Al, SiO2 and a fraction of Fe. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Hazardous Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.jhazmat.2012.07.006 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 1187 Subjects: – SubjectFull: Mineral industries Type: general – SubjectFull: Leachate analysis Type: general – SubjectFull: Limestone Type: general – SubjectFull: Acid mine drainage Type: general – SubjectFull: Calcium carbonate Type: general – SubjectFull: Meteorological precipitation Type: general – SubjectFull: X-ray diffraction Type: general Titles: – TitleFull: Treatment of mining acidic leachates with indigenous limestone, Zimapan Mexico. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Labastida, I. – PersonEntity: Name: NameFull: Armienta, M.A. – PersonEntity: Name: NameFull: Lara-Castro, R.H. – PersonEntity: Name: NameFull: Aguayo, A. – PersonEntity: Name: NameFull: Cruz, O. – PersonEntity: Name: NameFull: Ceniceros, N. IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 11 Text: Nov2013 Type: published Y: 2013 Identifiers: – Type: issn-print Value: 03043894 Numbering: – Type: volume Value: 262 Titles: – TitleFull: Journal of Hazardous Materials Type: main |
| ResultId | 1 |
