Efectos del carbono orgánico en fase sólida y del tiempo de residencia hidráulica sobre la eliminación de manganeso(II) en el sistema de tratamiento pasivo de un drenaje de mina de carbón

Translated title of the contribution: Effects of Solid-Phase Organic Carbon and Hydraulic Residence Time on Manganese(II) Removal in a Passive Coal Mine Drainage Treatment System

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Abstract

Passive treatment is a cost-effective method for Mn(II) removal from coal mine drainage via microbial oxidation and abiotic sorption/oxidation by Mn oxide (MnO x ). Emplacement of solid-phase carbon within passive treatment systems to slowly release organic carbon has been proposed to enhance microbial Mn(II) removal. We tested the effects of wood chips as a solid-phase carbon source on Mn(II) removal efficiency. Both softwood (white pine) and hardwood (red oak) digestion solution (10 mg C/L) inhibited Mn(II) removal due to dissolution and coating of the reactive MnO x surface. Our results indicate that wood chips would not be a suitable solid-phase organic amendment for Mn removal. A strong linear correlation was observed between hydraulic residence time and Mn(II) removal rate.

Translated title of the contributionEffects of Solid-Phase Organic Carbon and Hydraulic Residence Time on Manganese(II) Removal in a Passive Coal Mine Drainage Treatment System
Original languageSpanish
Pages (from-to)130-135
Number of pages6
JournalMine Water and the Environment
Volume38
Issue number1
DOIs
StatePublished - Mar 6 2019

All Science Journal Classification (ASJC) codes

  • Water Science and Technology
  • Geotechnical Engineering and Engineering Geology

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