A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Tests de lixiviation et de stabilisation d'un sédiment portuaire contaminé à l'arsenic
This research investigated the potential mobility of arsenic and its stabilization from contaminated dredged sediment by means of batch and column experiments. Leaching experiments were conducted according to the XP X 31–210 AFNOR (1998) protocol as a function of the contact time. Results showed that (1) leaching medium becomes alkaline (pH = 8) and soluble salt concentrations increase, (2) arsenic is weakly mobilize (60–150 μg/kg dry sediment) and (3) arsenic and iron concentrations are well correlated (R2 = 0,84). In different leaching media, arsenic mobility increased as follows: ultra pure water > acetic acid > phosphoric acid. Chemical stabilization by means of mineral amendment (5 % hematite) reduced arsenic mobility (30 to 40 %) in leachates from batch and column experiments.
Tests de lixiviation et de stabilisation d'un sédiment portuaire contaminé à l'arsenic
This research investigated the potential mobility of arsenic and its stabilization from contaminated dredged sediment by means of batch and column experiments. Leaching experiments were conducted according to the XP X 31–210 AFNOR (1998) protocol as a function of the contact time. Results showed that (1) leaching medium becomes alkaline (pH = 8) and soluble salt concentrations increase, (2) arsenic is weakly mobilize (60–150 μg/kg dry sediment) and (3) arsenic and iron concentrations are well correlated (R2 = 0,84). In different leaching media, arsenic mobility increased as follows: ultra pure water > acetic acid > phosphoric acid. Chemical stabilization by means of mineral amendment (5 % hematite) reduced arsenic mobility (30 to 40 %) in leachates from batch and column experiments.
Tests de lixiviation et de stabilisation d'un sédiment portuaire contaminé à l'arsenic
Mamindy Pajany, Yannick (author) / Hurel, Charlotte (author) / Marmier, Nicolas (author) / Roméo, Michèle (author)
European Journal of Environmental and Civil Engineering ; 14 ; 233-251
2010-02-01
19 pages
Article (Journal)
Electronic Resource
Unknown
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