Chromium (VI) Adsorption Characteristics of Bentonite Under Different Modification Patterns

摘要

We investigated the Cr(VI) adsorption characteristics of bentonite under different modification patterns by using a mixture of BS-12 (dodecyl dimethyl betaine) and DTAB (dodecyl trimethyl ammonium bromide). DTAB was used to compositely modify 25%, 50%, and 100% BS-12-modified bentonite (three modified modes of bentonite with BS-12). In addition to these modification modes, variations as functions of pH value, temperature, and ionic strength were compared. Results showed: