The removal of color from effluents using polyamide‐epichlorohydrin‐cellulose polymer. I. Preparation and use in direct dye removal

Abstract

A novel series of adsorbents have been prepared by reacting adipic acid, diethylenetriamine, epichlorohydrin, and cellulose. The structural features of these polyamide‐epichlorohydrin‐cellulose (PAE‐Cell) polymers have been confirmed by IR analysis. The ability of PAE‐Cell polymers to adsorb direct dyes from aqueous solution has been evaluated in a fixed bed column system. These PAE‐Cell polymers have been found to exhibit a better capacities for direct dye removal than some commercial activated carbons.© 1993 John Wiley & Sons, Inc.

Preparation and characterization of new succinic anhydride grafted Posidonia for the removal of organic and inorganic pollutants

“…Therefore, the deep colour system of direct dyes usually results in a large amount of dye molecules in the dye wastewater. On the other hand, because the direct dyes have large molecules, their adsorption onto biomass may be not optimal [53].…”

Decolorisation of effluent with ozone and re-use of spent dyebath

“…Various ion-exchange resins derived from sugar cane bagasse, waste paper, polyamide wastes, chitin, etc., were applied as adsorbents for removal of colour and other organics. [20][21][22][23][24] Colour-removal efficiency with these ion-exchange resins was comparable with that achieved using activated carbon.…”

Application of sunflower stalk‐carbon nitride nanosheets as a green sorbent in the solid‐phase extraction of polycyclic aromatic hydrocarbons followed by high‐performance liquid chromatography

“…Modification reactions, including cross‐linking and/or functionalization, have been tried to enhance the adsorbent stability and/or adsorption capacity. As a matter of fact, many chemical modification methods have been developed to improve adsorption abilities . In recent years, the utilization of carbon‐based materials, such as graphene and multiwalled carbon nanotubes as adsorbent in SPE procedure, are good choice to obtain good recovery and high enrichment factor (EF).…”