Contaminant separating method using a modified palygorskite clay sorbent

摘要

The present invention relates to modified clay sorbents which may be used as sorbents for chemical compounds. In addition, the present invention also relates to the use of modified clay sorbents for the sorption of chemical compounds. The modified clay sorbents of the present invention have particular application for the sorption of anionic and/or hydrophobic compounds.

主权项

1. A method for separating a hydrophobic contaminant from a sample containing the hydrophobic contaminant, wherein the hydrophobic contaminant comprises a phenoxy compound, the method comprising the step of:
contacting the sample with a modified clay sorbent under conditions suitable for sorption of the hydrophobic contaminant to the modified clay sorbent, the modified clay sorbent comprising a palygorskite clay modified with a cationic surfactant, wherein the cationic surfactant comprises a quaternary ammonium cation with two or more hydrocarbon tail groups, each of the two or more hydrocarbon tail groups comprising an octadecyl alkyl chain.