Adsorption of phenol and chlorinated phenols from aqueous solution by tetramethylammonium- and tetramethylphosphonium-exchanged montmorillonite

Removal of Effluent from Petrochemical Wastewater by Adsorption Using Organoclay

“…The experiments were performed with 100 mg of clay in solutions of adsorbate equal to 0.02 to 0.15 (mmol/100mL) in erlenmeyer of 250 mL, at 20°C. It was found that the smectite clay treated with TMP was better than the same adsorbent treated with TMA (Lawrence et al, 1998).…”

Crystal architectures of a layered silicate on monodisperse spherical silica particles cause the topochemical expansion of the core-shell particles

“…[16,23] The cation exchange capacity (CEC), which directly correlates with the negative-layer charge density, is an important determiner of the distance between adjacent interlayer cations (the spatial density). Achieving an appropriate distance can allow the material to act as a molecular sieve for nonionic organic compounds [24][25][26][27][28][29] or to improve the photofunctions of photoactive molecules. [30][31][32][33][34] It has therefore been recognised that one of the advantages smectites offer (in addition to the many other important properties of smectites and their intercalation compounds) is that the CEC can be varied in order to control the spatial distribution of organic moieties.…”

A Comparison of the Adsorption of Phenolic Compounds from Water in Column Systems Containing XAD Resins and Modified Clay

“…For example, Boyd et al (1988b) modified smectite with cetyltrimethylammonium bromide (denoted simply as CTAB-smectite) to sorb trichloroethylene and benzene, and found that sorption was effected by a partition mechanism. Similarly, Lawrence et al (1998) examined the adsorption of phenol and chlorinated phenolic compounds from aqueous solutions by tetramethylammonium-and tetramethylphosphonium-exchanged montmorillonite.…”