| Title | Hydrogeological Properties of Till Amended with Green Liquor Dregs (GLD): Recycling of an Industrial Residue for Reclamation of Acid Generating Mine Sites |
|---|---|
| ID_Doc | 6698 |
| Authors | Nigéus, S; Maurice, C; Lindblom, J |
| Title | Hydrogeological Properties of Till Amended with Green Liquor Dregs (GLD): Recycling of an Industrial Residue for Reclamation of Acid Generating Mine Sites |
| Year | 2023 |
| Published | Geotechnical And Geological Engineering, 41, 6 |
| Abstract | The oxidation of sulfide minerals in mine wastes is a possible threat to the environment as it might have potential to generate acid rock drainage (ARD). A common method to reduce ARD is to apply a dry cover on the mine waste deposit. Considering the massive amounts of mine waste produced in Sweden (104-million-ton in year 2018) there is a great need for suitable dry cover materials. Using non-hazardous industrial residues in the dry cover would be beneficial for both the mining industry and the providing industry as stricter waste management legislation incentivizes them to develop their waste management strategies. The objective of this study was to investigate if an addition of Green Liquor Dregs (GLD), a residue from pulp production, can decrease the hydraulic conductivity and increase the water retention capacity (WRC) of three different tills, with the purpose of improving the performance of a dry cover material on a mine waste deposit. Another objective was to investigate how the hydraulic conductivity and WRC are affected by the contents of fines and clays in the tills. The study concludes that the water retention capacity of the tills improves with GLD addition, however, the hydraulic conductivity did not decrease enough to reach the in Sweden required < 10(-8) m/s. Even though, GLD could still successfully be used in the reclamation of mine sites as the high WRC can be seen as the most important factor in deterring acid rock drainage by keeping the sealing layer close to saturation. This study further indicates that there are other factors than the particle size distribution of the materials that controls the hydraulic conductivity of the mixtures, such as initial water content, dry density, and compaction effort. |
| https://link.springer.com/content/pdf/10.1007/s10706-023-02477-7.pdf |
Similar Articles
| ID | Score | Article |
|---|---|---|
25898
|
Nigeus, S; Maurice, C; Lindblom, J The Drivers of Hydraulic Conductivity in Green Liquor Dregs Amended Till: Application to Reclamation of Acid Generating Mine Sites(2023)Mine Water And The Environment, 42, 1 | |
| 16760
|
Akinwekomi, V; Maree, JP; Masindi, V; Zvinowanda, C; Osman, MS; Foteinis, S; Mpenyana-Monyatsi, L; Chatzisymeon, E Beneficiation of acid mine drainage (AMD): A viable option for the synthesis of goethite, hematite, magnetite, and gypsum - Gearing towards a circular economy concept(2020) | |
| 28997
|
Masindi, V; Foteinis, S; Renforth, P; Ndiritu, J; Maree, JP; Tekere, M; Chatzisymeon, E Challenges and avenues for acid mine drainage treatment, beneficiation, and valorisation in circular economy: A review(2022) | |
| 15128
|
Sanchez-Ramos, D; Garrido, FJLB; Hernández, IA; Romero, LR; Camacho, JV; Fernández-Morales, FJ Sustainable use of wastes as reactive material in permeable reactive barrier for remediation of acid mine drainage: Batch and continuous studies(2023) |