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首页> 外文期刊>Journal of Hazardous Materials >Catalytic effect of silver on copper release from chalcopyrite mediated by Acidithiobacillus ferrooxidans
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Catalytic effect of silver on copper release from chalcopyrite mediated by Acidithiobacillus ferrooxidans

机译：白银催化作用对酸酐铁氧化物介导的硫代铜矿铜释放的催化作用

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摘要

Although silver ion in the solution is an important factor affecting the biodissolution of chalcopyrite, the effect of silver ion on the release of copper ion from chalcopyrite to the environment has not been explored until now. In order to fill this knowledge gap, the effect of silver ion on copper release from chalcopyrite in the presence of Acidithiobacillus ferrooxidans was investigated. The results indicate that silver ion significantly enhanced chalcopyrite biodissolution, thereby releasing more copper ion. In turn, this indicates that the release of copper ion from chalcopyrite to the environment was increased under these conditions. Biodissolution results, bacterial adsorption experiments, elemental composition analysis, and electrochemical analysis reveal that the enhancement of silver ion on copper ion release from chalcopyrite was mainly attributed to the improvement of electrochemical activity of chalcopyrite and the inhibition of the formation of passivation layer (S-n(2-)/S-0) on the chalcopyrite surface. This study provides a better understanding of the effect of silver ion on the release of copper ion from chalcopyrite to the environment. In the future, the influence of silver ion on chalcopyrite biodissolution should be considered in the evaluation of copper ion pollution to ensure reliability.
机译：虽然溶液中的银离子是影响氯偶沸石生物胶石的重要因素，但银离子对从氯偶铜离子释放到环境中的荧光离子的影响尚未探讨。为了填补这种知识差距，研究了银离子对在酸酐铁氧化物存在下从氯偶铜矿中铜释放的影响。结果表明，银离子显着增强了硫代铜矿生物淀粉，从而释放了更多的铜离子。反过来，这表明在这些条件下增加了从核黄素到环境中的铜离子的释放。生物调整结果，细菌吸附实验，元素组成分析和电化学分析表明，从硫代铜矿上加固铜离子释放的增强主要归因于硫代铜矿电化学活性的改善和钝化层的形成（SN（ 2 - ）/ s-0）在黄铜矿表面上。本研究提供了更好地理解银离子对从核黄素释放到环境中的铜离子的影响。将来，在铜离子污染评估中应考虑银离子对铜离子污染的影响，以确保可靠性。

著录项

  • 来源
    《Journal of Hazardous Materials》 |2020年第15期|122290.1-122290.8|共8页
  • 作者

    Yang Baojun; Zhao Chunxiao; Luo Wen; Liao Rui; Gan Min; Wang Jun; Liu Xueduan; Qiu Guanzhou;

  • 作者单位

    Cent South Univ Sch Minerals Proc & Bioengn Changsha 410083 Hunan Peoples R China|Minist Educ Key Lab Biohydromet Changsha Peoples R China;

    Cent South Univ Sch Minerals Proc & Bioengn Changsha 410083 Hunan Peoples R China|Minist Educ Key Lab Biohydromet Changsha Peoples R China;

    Cent South Univ Dept Dermatol Second Xiangya Hosp Changsha Peoples R China;

    Cent South Univ Sch Minerals Proc & Bioengn Changsha 410083 Hunan Peoples R China|Minist Educ Key Lab Biohydromet Changsha Peoples R China;

    Cent South Univ Sch Minerals Proc & Bioengn Changsha 410083 Hunan Peoples R China|Minist Educ Key Lab Biohydromet Changsha Peoples R China;

    Cent South Univ Sch Minerals Proc & Bioengn Changsha 410083 Hunan Peoples R China|Minist Educ Key Lab Biohydromet Changsha Peoples R China;

    Cent South Univ Sch Minerals Proc & Bioengn Changsha 410083 Hunan Peoples R China|Minist Educ Key Lab Biohydromet Changsha Peoples R China;

    Cent South Univ Sch Minerals Proc & Bioengn Changsha 410083 Hunan Peoples R China|Minist Educ Key Lab Biohydromet Changsha Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Copper ion; Chalcopyrite; Silver ion; Biodissolution; Acidithiobacillus ferrooxidans;

    机译：铜离子;氯偶岩;银离子;生物调整;酸酐铁辛;

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