| abstract |
The effluents discharged from various industries, such as textile, tannery, paper, printing, food, paints, rubber, and plastic release dyes and other contaminants into the environment. Sorption has been proven to be an effective and attractive mechanism for removing dyes and other contaminants in waste water. Clays have been used as sorbents for dyes or other contaminants in waste water. However, most of the investigated natural aluminosilicate clay minerals are not suitable for the sorption of anionic and/or hydrophobic compounds. The present invention relates to the use of modified clay sorbents for the sorption of chemical compounds. The modified clay sorbent comprises a palygorskite clay modified with a cationic surfactant comprising a quaternary ammonium cation with two or more hydrocarbon tail groups comprising an octadecyl alkyl chain. |