Arsenic and antimony immobilization from mineral processing solutions and waste waters

矿物加工溶液和废水中砷和锑的固定化

基本信息

  • 批准号:
    RGPIN-2015-05718
  • 负责人:
  • 金额:
    $ 1.82万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Discovery Grants Program - Individual
  • 财政年份:
    2016
  • 资助国家:
    加拿大
  • 起止时间:
    2016-01-01 至 2017-12-31
  • 项目状态:
    已结题

项目摘要

The increased extraction of mineral resources and mining activities have added pressure on the environment, therefore it is imperative that proper processes for water/waste management are developed. Arsenic and antimony are among the toxic elements which are usually released into the environment from mining activities. The mining operations at the Giant Mine gold mine in the Northwest Territories, which was operated from 1948 to 2004, have created 237,000 tonnes of arsenic trioxide dust. Arsenic trioxide is soluble in water and has contaminated soil and buildings in the surrounding area. In another case, arsenic concentrations of up 100 mg/L were detected in the tailing porewater (underground water) of Campbell Mine, Balmertown, ON. This arsenic level is 10,000 times higher than the maximum acceptable arsenic level by Canadian drinking water quality standard, which is 0.010 mg/L. As high grade and clean deposits are becoming more difficult to find, there is a need for the development of processes to extract complex arsenic and antimony-containing orebodies, minerals and metals in a safer, more environmentally sustainable manner. This is essential for the continued financial sustainability of the Canadian mining industry, the largest employer of the Canadian economy. Processing of complex orebodies is not possible without further development of robust solutions for the management of toxic elements. There is a need for development of processes that can immobilize (precipitate) the toxic elements as safe, non-toxic and stable compounds. In particular, the precipitates must have long term environmental stability for thousands of years. The applicant proposes to establish a research program to study the arsenic and antimony immobilization processes. The long-term goals of this research program are to develop a comprehensive understanding of the chemistry of the two elements in the mining processes, and the long-term stability of the arsenic and antimony-containing precipitates in the environment. During the next five years, i.e. short-term objectives, it is proposed to generate a solid knowledge of the arsenic and antimony oxidation mechanisms, investigate the feasibility of arsenic immobilization through sustainable bio-oxidation and bio-precipitation processes, develop a reliable protocol for long-term stability assessment of arsenic and antimony precipitates, and generate a global list of most stable arsenic and antimony compounds/precipitates, to be used as a reference document for process selection/development by the mining industry. It is expected that the knowledge, and HQP developed through this research program will be highly sought after by the Canadian mining industry. Two Ph.D. students and two Master’s students will be trained through the first 5-year round of this research program.
矿物资源的开采和采矿活动的增加对环境造成了更大的压力,因此必须制订适当的水/废物管理程序。砷和锑是采矿活动中通常释放到环境中的有毒元素。西北地区Giant Mine金矿从1948年到2004年的采矿作业已经产生了23.7万吨三氧化二砷粉尘。三氧化二砷可溶于水,污染了周围地区的土壤和建筑物。在另一个案例中,在安大略省巴尔默敦坎贝尔矿的尾矿孔隙水(地下水)中检测到砷浓度高达100毫克/升。这一砷含量比加拿大饮用水质量标准(0.010毫克/升)的最高可接受砷含量高出1万倍。

项目成果

期刊论文数量(0)
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会议论文数量(0)
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Ghahremaninezhad, Ahmad其他文献

Ghahremaninezhad, Ahmad的其他文献

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{{ truncateString('Ghahremaninezhad, Ahmad', 18)}}的其他基金

Arsenic and antimony immobilization from mineral processing solutions and waste waters
矿物加工溶液和废水中砷和锑的固定化
  • 批准号:
    RGPIN-2015-05718
  • 财政年份:
    2017
  • 资助金额:
    $ 1.82万
  • 项目类别:
    Discovery Grants Program - Individual
Process selection for refractory gold ores and concentrates
难选金矿石和精矿的工艺选择
  • 批准号:
    478893-2015
  • 财政年份:
    2015
  • 资助金额:
    $ 1.82万
  • 项目类别:
    Engage Grants Program
Atmospheric oxidation of pyrite; maximizing the elemental sulphur yield
黄铁矿的大气氧化;
  • 批准号:
    469802-2014
  • 财政年份:
    2015
  • 资助金额:
    $ 1.82万
  • 项目类别:
    Collaborative Research and Development Grants
Electrochemical Quartz Crystal Microbalance
电化学石英晶体微天平
  • 批准号:
    RTI-2016-00447
  • 财政年份:
    2015
  • 资助金额:
    $ 1.82万
  • 项目类别:
    Research Tools and Instruments
Arsenic and antimony immobilization from mineral processing solutions and waste waters
矿物加工溶液和废水中砷和锑的固定化
  • 批准号:
    RGPIN-2015-05718
  • 财政年份:
    2015
  • 资助金额:
    $ 1.82万
  • 项目类别:
    Discovery Grants Program - Individual
Atmospheric oxidation of pyrite; maximizing the elemental sulphur yield
黄铁矿的大气氧化;
  • 批准号:
    469802-2014
  • 财政年份:
    2014
  • 资助金额:
    $ 1.82万
  • 项目类别:
    Collaborative Research and Development Grants
Copper leaching process development
铜浸出工艺开发
  • 批准号:
    436458-2012
  • 财政年份:
    2013
  • 资助金额:
    $ 1.82万
  • 项目类别:
    Industrial R&D Fellowships (IRDF)
Copper leaching process development
铜浸出工艺开发
  • 批准号:
    436458-2012
  • 财政年份:
    2012
  • 资助金额:
    $ 1.82万
  • 项目类别:
    Industrial R&D Fellowships (IRDF)

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Arsenic and antimony immobilization from mineral processing solutions and waste waters
矿物加工溶液和废水中砷和锑的固定化
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    RGPIN-2015-05718
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