A new lignin-based resin (LBR) was prepared by condensation polymerization of sodium lignosulfonate with glucose under acidic conditions, and the process conditions for the preparation of LBR were optimized by orthogonal experiments. The results show that the optimum conditions are: a mass of sodium lignosulfonate of 10g, temperature of 190℃, mass percentage of glucose in sodium lignosulfonate of 5%, and pH value of the reaction solution of 0.5. And the yield of LBR can reached 37.75% under the optimum conditions.Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM) and Boehm titration were used to characterize the structure and properties of LBR. The analysis results reveal that LBR appears to be composed of microcellular-structure spherical particles with grain sizes in the range of 1 to 10μm, which are composed of amorphous high polymers that have a high density of acidic groups and high thermal stability under 250℃. Moreover, at the room temperature, the maximum adsorption capacity of LBR for Cr(VI) adsorption was 74.29mg/g.
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