Preparation of Ion Exchangers from Bagasse by Crosslinking with Epichlorohydrin–NH4OH or Epichlorohydrin–Imidazole
نویسندگان
چکیده
Sugar cane bagasse was crosslinked with epichlorohydrin in the presence of NH4OH or imidazole. The obtained water-insoluble products were characterized in terms of yield, anion-exchange capacity, packed volume, and dye-binding properties. Yields were highest using a 3 : 1 epichlorohydrin to NH4OH molar ratio, producing weak anion exchangers. The weak anion exchangers had low dye-binding capacities compared to their total anion-exchange capacities. A 2 : 1 epichlorohydrin-to-imidazole molar ratio proved best for making strong anion exchangers from bagasse. The strong anion exchangers had dye-binding capacities comparable to their anion-exchange capacities, indicating that they might be useful for removing anionic dyes from wastewater. q 1997 John Wiley & Sons, Inc. J Appl Polym Sci 64: 2561–2566, 1997
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