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October 3, 2025MineralsOpen Access

Limestone-Based Hybrid Passive Treatment for Copper-Rich Acid Mine Drainage: From Laboratory to Field

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Authors

JPJoshua PocaanBBB. S. BuenoJPJaica Mae Pagaduan

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Overview

Field deployment of a limestone-based hybrid passive treatment significantly reduces copper and manganese in acid mine drainage, indicating potential ecological benefits.

Key Points

  • Treatment system removed Cu (88.5%) and Mn (66.83%), while increasing pH to 6.26, improving local ecosystem health.
  • A 15-hour hydraulic retention time under both oxic and anoxic conditions was critical for effective treatment in both lab and field settings.
  • The innovative limestone treatment combines leach beds and packed reactors, addressing challenges of abandoned mine sites with ongoing AMD issues.
  • Observations revealed Cu-armoring that may affect the system's long-term performance, suggesting further refinement is necessary.

Cite This Study

Pocaan et al. (2025) studied this question.

synapsesocial.com/papers/68e02f2cf0e39f13e7fa1e59https://doi.org/10.3390/min15101043
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Also Consider

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  1. 1Reuse of Acid Mine Drainage─Based on the Selective Oxidation Mechanism and Flotation Separation Behavior of Copper Sulfide Ore via AOPs2025
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