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›› 2001, Vol. 1 ›› Issue (1): 0-0.

• 1 •    

Photoelectrochemical Degradation of PCP on TiO2 Film Electrode

XU Wen-lin, WANG Ya-qiong   

  1. Yangzhou University, Yangzhou, Jiangsu 225002, China
  • 出版日期:2001-02-20 发布日期:2001-02-20

Bioleaching of Low-grade Ni–Cu Sulfide Ore

CHEN Quan-jun, FANG Zhao-heng   

  1. Inst. Chem. Metall., Chinese Academy of Sciences, Beijing 100080, China
  • Online:2001-02-20 Published:2001-02-20

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摘要： An investigation of photoelectrochemical degradation of pentachlorophenol (PCP) on a TiO2 film electrode was presented. The TiO2 film electrode was prepared by anodisation of titanium metal in sulfuric acid solution and its photoelectrocatalystic performance was studied. The destruction of PCP follows approximately the first-order kinetics. The reaction constant decreases slightly from 2.6×10–5 s–1 to 2.0×10–5 s–1 as the initial PCP concentration is increased from 0.1 mmol/L to 1.0 mmol/L under the experimental condition.

关键词: pentachlorophenol, photoelectrochemical degradation, TiO2 film electrode

Abstract: Bioleaching of low-grade Ni–Cu sulfide ore from Jin–chuan with thiobacillus ferrooxidans (TF5) and thiobacillus thiooxidans (TT) is investigated. The effect of pH, inoculation, pulp density on leaching is presented. The leaching process inoculated with different blend of TF5 and TT is also examined. These experiments confirm that the leaching pH should be controlled at about 2.0, the best inoculation quantity 3.0′109 cells/ml, low pulp density is more favorable for leaching, and the extraction of nickel is increased by inoculation with the blend of TF5 and TT.

Key words: thiobacillus ferrooxidans, thiobacillus thiooxidans, bioleaching, low-grade Ni–Cu sulfide ore

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