Using the Modified Tessier Method to Analyze Antimony Speciation in Suspended Solids in Mining Wastewater

Abstract:

The modified Tessier method was used in the present study to analyze the antimony (Sb) speciation in suspended solids in mining wastewater from Ban-po Antimony Mine in Guizhou province. It was found that the residual fraction and the soluble fraction are the highest and the lowest in the five Sb fractions, accounting for 62.5% and 3% of the total respectively. The order of the five Sb fractions is: the residual fraction > the reduced fraction > the oxidation fraction > the acid-extractable fraction > the soluble fraction. The antimony soluble form in aqueous solution is mainly Sb (V), about 90% of the total. The results from the analysis by X-ray diffraction and scanning electron microscopy showed that the major crystalline forms of suspended solids are K-Mg-Fe-Al-Si-O-H₂O, Cu₃SbS₄, 3CaO·2Sb₂O₅·8H₂O, SiO₂ and the content of antimony element is approximately 2.55%.

• Periodical: Advanced Materials Research (Volumes 955-959)
• Pages: 1423-1428
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.955-959.1423
• Online since: June 2014
• Authors: Zhi Bin Li, Ji Wei Hu*, Chao Zhou, Yi Miao Lin, Ling Yun Li, Xian Fei Huang, Miao Jia
• Keywords: Antimony, Mining Wastewater, Modified Tessier Method, Speciation

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