Open AccessSynthesis and adsorption properties of cross-linked carboxymethyl starch (CMS)
Author(s) -
H H Li,
Yongqiang Gao,
L H Zhang,
N Li,
Z F Liu
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1605/1/012130
Subject(s) - adsorption , sodium hydroxide , chemistry , nuclear chemistry , starch , raw material , catalysis , fourier transform infrared spectroscopy , sodium , copper , sodium alginate , polymer chemistry , organic chemistry , chemical engineering , engineering
Cross-linked carboxymethyl starch CMS was synthesized with cross-linked starch as raw material, sodium chloroacetate as etherification agent and sodium hydroxide as catalyst, and the structure of the product was characterized by FTIR, SEM and XRD. The optimum synthesis conditions of CMS were m (CSt): m (MCA) = 5:3, NaOH dosage 12 ml, reaction temperature 55 °C and reaction time 3 h. When the concentration of copper ion in the simulated water sample was 25 mg/L and the dosage of CMS was 2 g/L, the removal rate of copper ion was 96.0%, and the adsorption capacity of CMS was 15.4 mg/g.