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Prodrive Dv1225-P4 255/W 8 Gb PCIe PCIe NVMe 16 DIMM Slot 3 tm.Codeware Compress Build 6258-lnd Torrent - Seedpeer Cable 1 Router MiniMate 4.Amine-sensitive adsorption of phenols and other hydrophobic organic contaminants on kaolinite.
The adsorption of a suite of phenolic and aliphatic contaminants was examined using several kaolinite-based materials to explore the mechanism of phenol sorption and its sensitivity to amine modification of the kaolinite surface. We assessed the surface area of the kaolinite based materials (calculated by BET surface area) and the amount of amine-surface available for amine modification. We observed that phenol adsorption was better described by the Freundlich model rather than by the Langmuir model. The amine-modified kaolinite performed better than the unmodified kaolinite in the removal of phenols from waste water. For amine-modified kaolinite, the adsorption capacity increased with increasing amine concentration and decreasing pH. The change in adsorption capacity due to amine modification correlated with the amount of surface amines available for chemical modification. Although the amine-modified kaolinite showed higher adsorption capacity than the unmodified kaolinite, amine-modified soil did not outperform the unmodified soil. We attribute the inefficiency of the amine-modified soil to the low availability of the amine molecules at low concentrations, and to the competitive adsorption of the adsorbate with the adsorbent surface. However, the influence of amine modification of the kaolinite was more significant in the removal of phenols than in the removal of other hydrophobic organic contaminants.Post navigation
Highlights of a Week in Hack Ithaca, Nov. 11-17
This past week at Ithaca Hack Ithaca, which is sponsored by Ithaca 0b46394aab