Idioma:

Assessment and Modification of Arsenic Mobility in Contaminated Soil

Dankwarth, F ; Gerth, J

Acta Hydrochimica et Hydrobiologica, 2002-07, Vol.30 (1), p.41-48

Texto completo disponível

Citações Citado por

Título:
Assessment and Modification of Arsenic Mobility in Contaminated Soil
Autor: Dankwarth, F ; Gerth, J
É parte de: Acta Hydrochimica et Hydrobiologica, 2002-07, Vol.30 (1), p.41-48
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Arsenic concentration in the seepage of contaminated soils of an old tannery site is assessed using batch and column experiments. The effect of reducing conditions, pH, and ionic strength is also investigated. The iron oxide rich subsoil (C-horizon) is the main source of groundwater pollution with arsenic. In this horizon, mobilization can increase as a result of reducing conditions upon periodical water saturation. Therefore, the potentially mobile arsenic is determined by a reductive dissolution of the poorly crystalline iron oxide fraction using 0.1 M ascorbic acid. Arsenic concentration can be reduced from 100 mu g/L to below 20 mu g/L by an increase of ionic strength (e.g. by a 0.01 M CaCl sub(2) solution). Arsenic contaminated soils should be limed regularly in order to maintain the highest possible calcium concentration in the soil solution.
Idioma: Inglês

Voltar para lista de resultados