| Инд. авторы: | Abrosimova N., Bortnikova S., Gas’kova O., Yurkevich N., Ribkina E. |
| Заглавие: | Results of mine tailings – water interaction: A column leaching study on the example of waste materials of Komsomolsky gold processing plant |
| Библ. ссылка: | Abrosimova N., Bortnikova S., Gas’kova O., Yurkevich N., Ribkina E. Results of mine tailings – water interaction: A column leaching study on the example of waste materials of Komsomolsky gold processing plant // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM. - 2015. - Vol.1. - Iss. 5. - P.765-770. - ISSN 1314-2704. |
| Внешние системы: | SCOPUS: 2-s2.0-84946825977; |
| Реферат: | eng: Leaching experiment to simulate water–waste interaction was conducted using waste materials of Komsomolsky gold processing plant. The experiment allowed us to describe the geochemistry of acidity formation and of trace elements leaching, to identify the physico-chemical parameters of drainage and chemical species of elements. It was proved that drainage with subalkaline pH values are danger due to high concentrations of As up to 0.21 mg/l, Sb up to 10 mg/l, Be up to 0.14 mg/l. It is shown by thermodynamic calculations that main dissolved species for Al, Fe, and Mn, which precipitated by hydrolysis are Al(OH)4 -, Fe(OH)3aq, Mn2+. The MeCO3aq are the predominant species for Cu at pH<8.08 and Ni. The Cu(OH)2 0 is the predominant species in solutions with pH≥8.08. For Zn free ion is predominant at pH<8.24, and than at pH≥8.24 ZnCO3aq is predominant. Aqueous species of As and Se in the solutions are HAsO4 2- and HSeO3 -, respectively. Leachates were oversaturated with respect to calcite, rhodochrosite, and Fe (oxy)hydroxides. For heavy metals and anionogenic elements the solutions are oversaturated with respect to ZnSiO3, Ba3(AsO4)2, CuFeO2 and CuFe2O4. Sorption and precipitations of trace metals may be an important control on trace metal concentrations. © SGEM2015. |
| Ключевые слова: | Trace metal concentration; Thermodynamic calculations; Physico - chemical parameters; Leaching experiments; Heavy metals mobility; Column leaching; Chemical forms; Trace analysis; Tailings; Trace elements; Manganese; Leaching; Heavy metals; Gold; Aluminum; Acidity; Heavy metals mobility; Column leaching; Chemical forms of elements; pH; Water interactions; |
| Издано: | 2015 |
| Физ. характеристика: | с.765-770 |
| Конференция: | Название: 15th International Multidisciplinary Scientific Geoconference and EXPO, SGEM 2015 Даты проведения: 2015-06-18 - 2015-06-24 |