The structure characterization of cellulose xanthogenate derived from the straw of Eichhornia crassipes.

Alkali-treated straw and cellulose xanthogenate were derived from shoot and root biomass of Eichhornia crassipes by treatment with NaOH and CS(2), respectively. The structures of the raw and modified plant materials were characterized by XRD, TGA/DTA, and FTIR. Alkali treatment increased the crystallinity of raw plant material, while the subsequent CS(2) treatment had the reverse effect.

Preferring cellulose of Eichhornia crassipes to prepare xanthogenate to other plant materials and its adsorption properties on copper.

Choosing bio-material of Eichhornia crassipes from five plant materials through comparison on their exchangeable capacity to copper and carboxyl content, cellulose xanthogenate was prepared by raw fiber of E. crassipes with NaOH and CS(2). The exchange adsorption properties of the product on copper were investigated and the optimum preparing condition was obtained.

Extraction and retrieval of potassium from water hyacinth (Eichhornia crassipes).

Studies were carried out on extraction and retrieval of potassium from water hyacinth (Eichhornia crassipes). The stem and leaf were subjected to 13 treatments. The highest rate of K removal following HCl treatment was 69.