FH型腐植酸树脂的研制及其吸附特性

PREPARATION AND ADSORPTION PROPERTY OF FH HUMIC RESIN

FH humic resin is mainly composed of humic acid from weathering coal. Its preparation steps include: adding alginic acid; congealing calcium-based resin by means of gelation; condensing and drying at low temperature. Optimal technique was determined by orthogonal test and variance analysis.The resin thus obtained is featured by large adsorption capacity, long life, indifferent to Ca~(2+) and Mg~(2+) ions, and good adsorption selectivity. The major factors for retaining adsorption capacity of FH resin are acid cleavage and modification with calcium. Active function groups in FH resin can react with heavy metallic ions in ion exchange, complexing(or chelating)and surface adsorption.