Progress, Challenges, and Perspectives of Bioleaching for Recovering Heavy Metals from Mine Tailings

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Instruments or methods</td><td class="align_center">Functions</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Inductive coupled plasma atomic emission spectrometry (ICP-OES)</td><td class="align_center">Determination of metal content</td></tr><tr><td class="align_left">Atomic absorption spectrophotometer (AAS)</td><td class="align_center">Determine the concentration of metal in solution</td></tr><tr><td class="align_left">pH meter and redox potential analyzer</td><td class="align_center">Determine pH values and redox potential Eh</td></tr><tr><td class="align_left">Fourier transform infrared spectrometers (FTIR)</td><td class="align_center">Qualitative and quantitative analysis of samples</td></tr><tr><td class="align_left">X-ray diffractometer (XRD)</td><td class="align_center">Mineralogical analysis</td></tr><tr><td class="align_left">Phenanthroline spectrophotometry</td><td class="align_center">Determination of ferrous ion and total iron concentration</td></tr><tr><td class="align_left">16S rRNA gene sequencing</td><td class="align_center">Monitor microbial distribution</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Experimental equipment and functions commonly used in biological leaching experiment.</div>

Adsorption Science & Technology

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Table 2

Table 2: Progress, Challenges, and Perspectives of Bioleaching for Recovering Heavy Metals from Mine Tailings 