|
|||||
|
|
Mineralogical and geochemical characterization of precipitates on stream receiving acid mine water, Korea |
|
| Authors: | Eum Sik Woo Jeong Jin Kim Young Hun Kim Gyo Cheol Jeong Yun Deuk Jang Warren A. Dick |
| Affiliation: | 1. Department of Earth and Environmental Science, Andong National University, Andong, Republic of Korea 2. Department of Environmental Engineering, Andong National University, Andong, Republic of Korea 3. Department of Geology, Kyungpook National University, Daegu, Republic of Korea 4. School of Environment and Natural Resources, The Ohio State University Agricultural Research and Development Center, Wooster, OH, USA |
| Abstract: | Seasonal variations of water chemistry occurred in acid mine drainage receiving mine and leachate water. Sulfate and metal concentrations were low in winter but high in spring and summer. Mine waters were highly acidic (up to pH 3.4) in nature with high concentrations of manganese, copper and zinc but high electrical conductivity and sulfate in leachate. The blue and brownish yellow precipitates were formed under different chemical environments of acid mine drainage. Brownish yellow (Munsell color 7.5YR 8/12), blue (Munsell color 2.5B 9/7) and light blue (Munsell color 2.5B 9/3) precipitates deposited on the stream bottom receiving acid mine water. The brownish yellow precipitates formed in the acid mine water, whereas the blue and light blue precipitates formed in the leachate water. The brownish yellow precipitates consisted mainly of ferrihydrite, whereas the blue and light blue precipitates consisted of glaucocerinite and/or woodwardite. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |