Study on adsorption ability of arsenic in wastewater and soil by chitosan-polyvinyl alcohol composite hydrogel
ZHANG Xiao-jing
PANG Long
HE Ling-hao
WANG Ming-hua
CHEN Yan
ZHANG Zhi-hong
Abstract：Chitosan-polyvinyl alcohol composite hydrogel was prepared using the hydrothermal method and scanning electron microscope (SEM)was used to detect the surface morphology of the composite hydrogel. Then the adsorption ability was detected through static adsorption experiments and desorption tests in water solution and soil digestion solution,respectively.Results suggested that the chitosan-polyvinyl alcohol composite hydrogel,as material with large surface area and more pores 1 0~60 μm in diameter,could effectively remove arsenic from both wastewater and soil.The adsorbing capacity were 3 .976 mg arsenic/g hydrogel and 3 .480 mg arsenic/g hydrogel,respectively.The desorption efficiency of this composite hydrogel to arsenic was higher,and the hydrogel could be reused.The desorption efficiency were 74.7% ~81 .4% and 64.1% ~77 .0%,respectively for wastewater and soil.So the chitosan/polyvinyl alcohol composite hydrogel could effec-tively remove arsenic from both wastewater and soil.
Keywords：chitosan-polyvinyl alco-hol composite hydro-gelarsenicadsorptiondesorptionenvironmen-tal protection
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 58-64 )