A mixed media approach using locally available neutralizing materials for the passive treatment of acid mine drainage
Acid mine drainage (AMD) is generally managed via active or passive treatment strategies. Between the two, passive treatment is explored as a more sustainable alternative, especially for abandoned and legacy mines due to their low energy, manpower and material requirements. Recent studies of the aut...
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| Language: | English |
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Elsevier
2025-02-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844025003640 |
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| author | Joshua Pocaan Casey Oliver A. Turingan Carlito Baltazar Tabelin Joshua B. Zoleta Takahiko Arima Ilhwan Park Mayumi Ito Aileen H. Orbecido |
| author_facet | Joshua Pocaan Casey Oliver A. Turingan Carlito Baltazar Tabelin Joshua B. Zoleta Takahiko Arima Ilhwan Park Mayumi Ito Aileen H. Orbecido |
| author_sort | Joshua Pocaan |
| collection | DOAJ |
| description | Acid mine drainage (AMD) is generally managed via active or passive treatment strategies. Between the two, passive treatment is explored as a more sustainable alternative, especially for abandoned and legacy mines due to their low energy, manpower and material requirements. Recent studies of the authors have explored the use of limestone and waste materials like low-grade ores (LGO), fly ash (FA), and concrete wastes (CW) for AMD treatment and found that although these materials generated alkalinity individually, they could only partially remove sulfate (SO42−) and some heavy metals. To address this limitation, a mixed media approach using these four materials is proposed to neutralize the pH of AMD and maximize metal and SO42− removal. A total of twenty (20) mixtures of the four materials were identified based on the response surface methodology (RSM) experimental design. Laboratory-scale experiments using simulated AMD were performed to assess the performance of each mixture by monitoring the pH, oxidation-reduction potential (Eh), electrical conductivity (EC), and concentrations of metals and SO42−. Based on the results, three optimized mixed media compositions were identified. Overall, simulated AMD passively treated by the optimized mixed media compositions met the Philippine effluent standards except for SO42−. |
| format | Article |
| id | doaj-art-dd494d90451746f1a614b7b7f3a6a9a7 |
| institution | Kabale University |
| issn | 2405-8440 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj-art-dd494d90451746f1a614b7b7f3a6a9a72025-01-30T05:14:35ZengElsevierHeliyon2405-84402025-02-01113e41984A mixed media approach using locally available neutralizing materials for the passive treatment of acid mine drainageJoshua Pocaan0Casey Oliver A. Turingan1Carlito Baltazar Tabelin2Joshua B. Zoleta3Takahiko Arima4Ilhwan Park5Mayumi Ito6Aileen H. Orbecido7Center for Engineering and Sustainable Development Research, De La Salle University, 2401 Taft Avenue, Malate, Manila, 1004, PhilippinesCenter for Engineering and Sustainable Development Research, De La Salle University, 2401 Taft Avenue, Malate, Manila, 1004, PhilippinesDepartment of Materials and Resources Engineering Technology, Mindanao State University – Iligan Institute of Technology, Andres Bonifacio Ave., Tibanga, Iligan City, 9200, Philippines; Resource Processing and Technology Center, RIEIT, Mindanao State University – Iligan Institute of Technology, Andres Bonifacio Avenue, Tibanga, Iligan City, 9200, PhilippinesDepartment of Materials and Resources Engineering Technology, Mindanao State University – Iligan Institute of Technology, Andres Bonifacio Ave., Tibanga, Iligan City, 9200, Philippines; Division of Sustainable Resources Engineering, Graduate School of Engineering, Hokkaido University, Sapporo, 080-8628, JapanDivision of Sustainable Resources Engineering, Faculty of Engineering, Hokkaido University, Sapporo, 080-8628, JapanDivision of Sustainable Resources Engineering, Faculty of Engineering, Hokkaido University, Sapporo, 080-8628, JapanDivision of Sustainable Resources Engineering, Faculty of Engineering, Hokkaido University, Sapporo, 080-8628, JapanCenter for Engineering and Sustainable Development Research, De La Salle University, 2401 Taft Avenue, Malate, Manila, 1004, Philippines; Department of Chemical Engineering, De La Salle University, 2401 Taft Avenue, Malate, Manila, 1004, Philippines; Corresponding author. De La Salle University, 2401 Taft Avenue, Malate, Manila, 1004, Philippines.Acid mine drainage (AMD) is generally managed via active or passive treatment strategies. Between the two, passive treatment is explored as a more sustainable alternative, especially for abandoned and legacy mines due to their low energy, manpower and material requirements. Recent studies of the authors have explored the use of limestone and waste materials like low-grade ores (LGO), fly ash (FA), and concrete wastes (CW) for AMD treatment and found that although these materials generated alkalinity individually, they could only partially remove sulfate (SO42−) and some heavy metals. To address this limitation, a mixed media approach using these four materials is proposed to neutralize the pH of AMD and maximize metal and SO42− removal. A total of twenty (20) mixtures of the four materials were identified based on the response surface methodology (RSM) experimental design. Laboratory-scale experiments using simulated AMD were performed to assess the performance of each mixture by monitoring the pH, oxidation-reduction potential (Eh), electrical conductivity (EC), and concentrations of metals and SO42−. Based on the results, three optimized mixed media compositions were identified. Overall, simulated AMD passively treated by the optimized mixed media compositions met the Philippine effluent standards except for SO42−.http://www.sciencedirect.com/science/article/pii/S2405844025003640Acid mine drainagePassive treatmentMixed mediaOptimizationWastewater |
| spellingShingle | Joshua Pocaan Casey Oliver A. Turingan Carlito Baltazar Tabelin Joshua B. Zoleta Takahiko Arima Ilhwan Park Mayumi Ito Aileen H. Orbecido A mixed media approach using locally available neutralizing materials for the passive treatment of acid mine drainage Heliyon Acid mine drainage Passive treatment Mixed media Optimization Wastewater |
| title | A mixed media approach using locally available neutralizing materials for the passive treatment of acid mine drainage |
| title_full | A mixed media approach using locally available neutralizing materials for the passive treatment of acid mine drainage |
| title_fullStr | A mixed media approach using locally available neutralizing materials for the passive treatment of acid mine drainage |
| title_full_unstemmed | A mixed media approach using locally available neutralizing materials for the passive treatment of acid mine drainage |
| title_short | A mixed media approach using locally available neutralizing materials for the passive treatment of acid mine drainage |
| title_sort | mixed media approach using locally available neutralizing materials for the passive treatment of acid mine drainage |
| topic | Acid mine drainage Passive treatment Mixed media Optimization Wastewater |
| url | http://www.sciencedirect.com/science/article/pii/S2405844025003640 |
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