Sk. Parida et Bk. Mishra, ADSORPTION OF STYRYL PYRIDINIUM DYES ON POLYETHYLENE-GLYCOL-TREATED SILICA, Colloids and surfaces. A, Physicochemical and engineering aspects, 134(3), 1998, pp. 249-255
The adsorption behaviour of some monochromophoric and bischromophoric
styryl pyridinium dyes on polyethyleneglycol-treated silica have been
investigated in an aqueous medium. The adsorption isotherms are analys
ed by using the Langmuir equation and the equation proposed by Gu and
Zhu [Colloids Surf. 44 (1990) 81]. An adsolubilization-type phenomenon
has been proposed for the adsorbate-adsorbent interaction. (C) 1998 E
lsevier Science B.V.