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硫砷金精矿的嗜铁钩端螺旋菌生物氧化预处理研究

摘要第4-6页
ABSTRACT第6-7页
CHAPTER Ⅰ INTRODUCTION第11-32页
    1.1 Background第11-16页
        1.1.1 Bioleaching第11页
        1.1.2 Development of bioleaching第11-14页
        1.1.3 Development of bioleaching in China第14-16页
    1.2 Brief description of gold ore第16-20页
        1.2.1 Refractory of gold ore第16-17页
        1.2.2 Factor affecting leaching performance第17-20页
    1.3 Bioleaching and biooxidation mechanisms第20-21页
    1.4 Major species of microorganisms in bioleaching第21-25页
        1.4.1 Characteristic of Leptospirillum ferriphium第22-25页
    1.5 Microbial growth and its dynamic第25-27页
    1.6 Basic concept on microbial kinetics of iron oxidation第27-29页
    1.7 Basic concept on microbial kinetics of arsenopyrite oxidation第29-30页
    1.8 Aims and Objective of Research第30-32页
        1.8.1 Aims and objectives第30-31页
        1.8.2 Research scope第31-32页
CHAPTER Ⅱ MATERIALS AND METHODS第32-43页
    2.1 Materials第32-34页
        2.1.1 Arsenopyrite-bearing gold concentrate characterization第32-34页
    2.2 Equipment and chemical reagents第34-35页
        2.2.1 Equipment第34-35页
        2.2.2 Chemical reagents第35页
    2.3 Methodology of research第35-37页
        2.3.1 Experimental procedures第36页
        2.3.2 Experimental apparatus第36-37页
        2.3.3 Microbial culture第37页
    2.4 Analytical Technique第37-41页
        2.4.1 Determination of bacterial cell density by direct microscopic counting第37-38页
        2.4.2 pH and oxidation reduction potential第38-39页
        2.4.3 Spectrophotometric of iron assay第39-40页
        2.4.4 Total dissolved arsenic assay第40-41页
    2.5 Sample collections and data handling第41-43页
CHAPTER Ⅲ MICROBIAL ACTIVATION AND MICROBIAL GROWTH第43-55页
    3.1 Leptospirillum ferriphilum activation第43-44页
    3.2 Leptospirillum ferriphilum growth第44-47页
    3.3 The kinetics study第47-53页
        3.3.1 Cell growth kinetics第48-50页
        3.3.2 Kinetics of ferrous iron biooxidation第50-53页
    3.4 Summary第53-55页
CHAPTER Ⅳ BIOOXIDATION EXPERIMENTS OFARSENOPYRITE-BEARING GOLD CONCENTRATE第55-76页
    4.1 Preliminary bioleaching test第55-57页
    4.2 Biooxidation optimization第57-72页
        4.2.1 Pretreatment of arsenopyrite-bearing gold concentrate with variation of chemical compound第57-63页
        4.2.2 Pretreatment of arsenopyrite-bearing gold concentrate with variation of ferrous iron(Fe~(2+))第63-67页
        4.2.3 Pretreatment of arsenopyrite-bearing gold concentrate with variation of ferric iron(Fe~(3+))第67-72页
    4.3 The kinetics study of the biooxidation of arsenopyrite-bearing gold concentrate第72-74页
    4.4 Summary第74-76页
CHAPTER Ⅴ CLOSURE第76-79页
    5.1 Conclusion第76-78页
    5.2 Suggestions第78-79页
REFERENCES第79-87页
APPENDICES第87-92页
致谢第92-93页
攻读硕士学位期间发表的学术论文目录第93页

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