scholarly journals Removal Mechanism in Anionic Co-precipitation with Hydroxides in Acid Mine Drainage Treatment

2015 ◽  
Vol 62 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Chiharu TOKORO
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Removal Mechanism ◽  
Acid Mine ◽  
Co Precipitation ◽  
Acid Mine Drainage Treatment

Mechanisms and Remediation Technologies of Sulfate Removal from Acid Mine Drainage

2012 ◽  
Vol 610-613 ◽  
pp. 3252-3256
Author(s):  
Mei Qin Chen ◽  
Feng Ji Wu
Keyword(s):  
Heavy Metals ◽  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Metal Corrosion ◽  
Sulfate Ion ◽  
High Concentration ◽  
Biological Reduction ◽  
Acid Mine ◽  
Sulfate Removal ◽  
Co Precipitation

Acid mine drainage (AMD) has properties of extreme acidification, quantities of sulfate and elevated levels of soluble heavy metals. It was a widespread environmental problem that caused adverse effects to the qualities of ground water and surface water. In the past decades, most of investigations were focused on the heavy metals as their toxicities for human and animals. As another main constitution of AMD, sulfate ion is nontoxic, yet high concentration of sulfate ion can cause many problems such as soil acidification, metal corrosion and health problems. More attention should be paid on the sulfate ion when people focus on the AMD. In the paper, sulfate removal mechanisms include adsorption, precipitation, co-precipitation and biological reduction were analyzed and summarized. Meanwhile, the remediation technologies, especially the applications of them in China were also presented and discussed.

scholarly journals Acid mine drainage treatment by integrated submerged membrane distillation–sorption system

Chemosphere ◽  
2019 ◽  
Vol 218 ◽  
pp. 955-965 ◽  
Author(s):  
Seongchul Ryu ◽  
Gayathri Naidu ◽  
Md Abu Hasan Johir ◽  
Youngkwon Choi ◽  
Sanghyun Jeong ◽  
...  
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Membrane Distillation ◽  
Sorption System ◽  
Acid Mine ◽  
Acid Mine Drainage Treatment

scholarly journals Induction of a geochemical barrier for As, Fe and S immobilization in a sulfide substrate

2012 ◽  
Vol 36 (2) ◽  
pp. 671-679 ◽  
Author(s):  
Igor Rodrigues de Assis ◽  
Luiz Eduardo Dias ◽  
Emerson Silva Ribeiro Jr ◽  
Walter Antônio Pereira Abrahão ◽  
Jaime Wilson Vargas de Mello ◽  
...  
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Environmental Concern ◽  
Experimental Period ◽  
Control Treatment ◽  
Geochemical Barrier ◽  
Acid Mine ◽  
Element Mobilization ◽  
Co Precipitation ◽  
The Impact

Acid mine drainage (AMD) is an environmental concern due to the risk of element mobilization, including toxic elements, and inclusion in the food chain. In this study, three cover layers were tested to minimize As, Fe and S mobilization from a substrate from former gold mining, containing pyrite and arsenopyrite. For this purpose, different layers (capillary break, sealant and cover layer) above the substrate and the induction of a geochemical barrier (GB) were used to provide suitable conditions for adsorption and co-precipitation of the mobilized As. Thirteen treatments were established to evaluate the leaching of As, Fe and S from a substrate in lysimeters. The pH, As, Fe, S, Na, and K concentrations and total volume of the leachates were determined. Mineralogical analyses were realized in the substrate at the end of the experimental period. Lowest amounts of As, Fe and S (average values of 5.47, 48.59 and 132.89 g/lysimeter) were leached in the treatments that received Na and K to induce GB formation. Mineralogical analyses indicated jarosite formation in the control treatment and in treatments that received Na and K salts. However, the jarosite amounts in these treatments were higher than in the control, suggesting that these salts accelerated the GB formation. High amounts of As, Fe and S (average values of 11.7, 103.94 and 201.13 g/lysimeter) were observed in the leachate from treatments without capillary break layer. The formation of geochemical barrier and the use of different layers over the sulfide substrate proved to be efficient techniques to decrease As, Fe and S mobilization and mitigate the impact of acid mine drainage.

Stabilization/solidification of acid mine drainage treatment sludge

2022 ◽  
pp. 175-199
Author(s):  
Marouen Jouini ◽  
Mostafa Benzaazoua ◽  
Carmen Mihaela Neculita
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Acid Mine ◽  
Acid Mine Drainage Treatment

The application of wood ash as a reagent in acid mine drainage treatment

2014 ◽  
Vol 56 ◽  
pp. 109-111 ◽  
Author(s):  
Silvie Heviánková ◽  
Iva Bestová ◽  
Miroslav Kyncl
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Wood Ash ◽  
Acid Mine ◽  
Acid Mine Drainage Treatment
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