Metal On-Line Voltammetric Analyzer for On-Site Monitoring of Iron Speciation in Acid Mine Drainage Waters: Development and Characterization

T. Hezard (1) , Geoffroy Durand (1) , Ph. Viers (1) , Stephane Roy (2) , N. Guigues (2) , Michel Brach (2) , J.-P. Heitzmann (3) , P. Eberlé (3) , F. Bellouard (3) , Mohammed Rakib (1)

1 LGPM - Laboratoire de Génie des Procédés et Matériaux - EA 4038
2 BRGM - Bureau de Recherches Géologiques et Minières (BRGM)
3 Heito SME

The development of a simple, low cost, portable metal on-line voltammetric analyzer (MOVA) for the iron analysis, as well as other species, in mining effluents is presented. It consists of a voltammetric cell based on an impinging jet flow configuration, a fluidic system controlled by gravity and electronics. Laboratory tests were performed to optimize the system as well as the analytical conditions for Fe speciation measurements. MOVA was then tested in the laboratory, in samples of both mining effluents. The results showed that iron in both mining effluents, as well as copper and arsenic, can be measured in oxygenated samples.

Keywords: Iron; Mining effluents; On-site device; Impinging jet electrode; Voltammetry

Domains: Engineering Sciences [physics]

T. Hezard, Geoffroy Durand, Ph. Viers, Stephane Roy, N. Guigues, et al.. Metal On-Line Voltammetric Analyzer for On-Site Monitoring of Iron Speciation in Acid Mine Drainage Waters: Development and Characterization. Electroanalysis, 2009, 21 (12), p. 1401-1410. ⟨10.1002/elan.200804538⟩. ⟨hal-00515552⟩