Assessment of Pollution from a Solid Release from Hydrometallurgical Treatment of Zinc Concentrate in the Democratic Republic of Congo

• 作者: Bamba Bukengu Muhaya Kabumana Dieudonne Tshibanda Marc Degrez Pierre Kitala Kongolo
• 来源期刊: 环境科学与工程:A
• 学科: 地球科学
• 关键词: COMPLIANCE HYDROMETALLURGY LEACHING POLLUTANTS RELEASE
• 年，卷（期）: 2020,（1）
• 页码范围: 33-41
• 页数: 9页
• 分类号: X70

摘要

During the hydrometallurgical processing of a zinc concentrate,previously roasted,solid releases produced were stored over the years in the open air right next to the Kolwezi Zinc Plant.The purpose of the study is to ascertain whether these releasespose a real environmental management problem.Samples taken from the site were characterized chemically and mineralogically.These revealed the presence of mineral and metal pollutants in significant proportions.The content of basic metals(copper,zinc,lead,etc.)makes these releases a valuable potential.Results obtained after leaching availability tests show the presence of some base metals in leachate and those obtained after landfill compliance tests show a significant release of copper and zinc.This confirms the dangerousness of these releases.These releases cannot be accepted even in Class I landfills in accordance with the 2003/33/EC standard.