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- Title
Laboratory experiments on diffusion and sorption of heavy metals in a marine clay.
- Authors
Internò, G.; Lenti, V.; Fidelibus, C.
- Abstract
Sorption capacity and diffusion of the marine clay of Taranto industrial area (Southern Italy) with respect to heavy metals at low concentration levels were measured by means of Batch-Equilibrium and Column tests. Single-species and multiple-species solutions of Cd $$^{2+}$$ , Cr $$^{3+}$$ and Cu $$^{2+}$$ were utilized. These solutions contained only these heavy metals as cations. Furthermore, the clay was not previously subjected to pre-treatment. The note describes the experimental results, that do not conform with the literature, as the measured clay sorption capacity for multiple-species solutions larger than for the single-species solutions, in spite of the competition among metals. A tentative explanation of this unexpected response is given in the conclusions.
- Subjects
HEAVY metal absorption &; adsorption; CLAY testing; SORPTION techniques; ANALYSIS of clay; DIFFUSION in hydrology; FREUNDLICH isotherm equation
- Publication
Environmental Earth Sciences, 2015, Vol 73, Issue 8, p4443
- ISSN
1866-6280
- Publication type
Article
- DOI
10.1007/s12665-014-3729-0