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- Title
Removal of acetamiprid from aqueous solutions with low-cost sorbents.
- Authors
Choumane, Fatima Zohra; Benguella, Belkacem
- Abstract
The capacities of three Algerian clays as sorbents to remove acetamiprid insecticide from aqueous solutions were studied using a batch technique at room temperature. These clays were characterized using different methods, i.e. the X-ray fluorescence, FTIR spectroscopy, cation exchange capacity, and the specific area measurement. The static adsorption tests showed that the pH of the insecticide solutions, its temperature and agitation speed affect the adsorption process. Studies on acetamiprid retention showed that it is mainly influenced by the physicochemical properties of the clays used. Indeed, the adsorption results perfectly agree with the pseudo-second-order model, with very high regression coefficients (R2). The pH and temperature increase influences negatively the adsorption operation. A positive ΔGvalue indicates that the removal process is non spontaneous with clays. The adsorption isotherm data follow the Langmuir equation in which parameters were calculated. In addition, results show that insecticide sorption on clays is an exothermic process and is higher with bentonite clay than with other clays. Therefore, the bentonite can be chosen as the material which presents a high adsorption capacity.
- Subjects
INSECTICIDES; AQUEOUS solutions; X-ray fluorescence; FOURIER transform infrared spectroscopy; TEMPERATURE
- Publication
Desalination & Water Treatment, 2016, Vol 57, Issue 1, p419
- ISSN
1944-3994
- Publication type
Article
- DOI
10.1080/19443994.2014.966332