Removal of nitrophenol pesticides gfrom aqueous solutions by layered double hidroxides and their clacined products
2010
Chaara, D. | Pavlovic, I. | Bruna González, Felipe | Ulibarri Cormenzana, M. A. | Draoul, K. | Barriga, C.
The ability of MgAl layered double hydroxides (LDHs) and their calcined products to adsorb the water contaminants 2,4-dinitrophenol (DNP) and 2-methyl-4,6-dinitrophenol (DNOC) was assessed. Adsorption tests were conducted on LDHs with variable Mg/Al ratios (and variable layer charge), pH values, contact times and initial pesticide concentrations to identify the optimum conditions for the intended purpose. Adsorbents and adsorption products were characterized by X-ray diffraction and FT-IR spectroscopy as well as atomic absorption spectroscopy and thermal analyses. The amounts of pesticides removed from water were determined by UV–Vis spectrophotometry. All adsorbents except the carbonate-containing hydrotalcite possessed a very high adsorption capacity for both contaminants.
显示更多 [+] 显示较少 [-]This work was partially funded by Spain's Ministerio de Asuntos Exteriores y de Cooperación (AECI) through the PCI-Mediterráneo Projects A/4879/06 and A/8191/07, by Ministerio de Ciencia e Innovación (AGL2008-04031-CO2-02) and also by Junta de Andalucía through Research GroupFQM-214.
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