Preparation and adsorption property of Mg2 Al-LS-LDH composites
HUANG Gai-ling
WANG Dong
JIANG Ling
ZHOU Jing
ZHAO Yu-cheng
Abstract：Using calcination-hydration method,a new type of solid adsorbent Mg2 Al-LS-LDH was prepared through water soluble sulfonated lignin loading on the LDHs surface.The structure of the composites were characterized by XRD and IR,and its adsorption performance was studied.The results showed that the sulfonated lignin didn't enter into the interlayer of LDHs,but bond with the surface hydroxyl of the LDHs. The adsorption rate of copperion was fast and the adsorption rate was 30 min,closing to the adsorption equilibrium,the removal rate was 92.2%,the adsorption capacity reached 36.88 mg/g.In addition,the optimum adsorption conditions were adsorption time 6 h,pH =5,the mass of adsorbent 0.050 0 g,ad-sorption temperature 25 ℃.
Keywords：Mg2 Al-LS-LDH compositescopper ion removal ratesulfonated lignin adsorption propertycal-cination-hydration methodindustrial wastewater treatment
Publication Date：2015-10-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 12-16 )