journal6 ›› 2001, Vol. 22 ›› Issue (3): 9-12.

• Doctoral Forum • Previous Articles     Next Articles

Analysis and Study on Evolving AsH3 Process of Electrodepositing Arsenic in Aqueous Solution System


  1. ( Institute for Environmental Protection, Hunan Univ. , Changsha 410082, Hunan China)
  • Online:2001-09-15 Published:2013-01-05

Abstract: Electrodeposition is one of the clean methods to prepare elementary arsenic. In this paper, the theoretical solubility of As(Ⅲ) in aqueous solutiou was calculated, and the mechanism of forming AsH3 in electrodeposition was analyzed. The research reveals that the solubility of As(Ⅲ) is significantly larger in aqueous alkali solution than in aqueous acid or neutral solution, which results that electrodepositing arsenic in alkali solution is much easier and that the efficient method to prevent forming AsH3 is to enhance the electric potential of evolving hydrogen.

Key words: arsenic, aqueous solution, electrodeposition, AsH3

WeChat e-book chaoxing Mobile QQ