Attapulgite-iron Oxide Composite Adsorption Studies Of Organic Matter

DCP/BPA is an organic pollutant adsorption properties of two organicpollutants by the static assay PMC material; the adsorption regenerationexperiments, the regeneration efficiency by Fenton regeneration withpotassium permanganate regeneration research. Through a series ofexperiments, the following conclusions:（1） Under acidic conditions （pH <5）, the single factor test adsorbed in thethe PMC material on DCP to promote its adsorption; The increasedconcentration of Cu2+promote the adsorption process; By adsorption isothermfitting Freundlich adsorption model can fit the adsorption behavior.（2） PMC material adsorption the DCP kinetics equation model fitting, thesecond order kinetic model to better fit the adsorption process, the adsorptionrate parameters basic R²≥0.99; And the adsorption process is surfaceadsorption and intra-particle diffusion process.（3） Compare PMC on the DCP/BPA of the adsorption process, the thePMC material on BPA is fast adsorption; PMC of BPA adsorption surfaceadsorption process in the kinetics of the adsorption fitting. BPA polarity lessthan DCP hydrophobic PMC material more readily adsorbable weakly polarorganic compounds.（4） The PMC material Fenton regeneration conditions for H₂O₂dosage is0.5mL Fe₂SO₄dosage of100mg/L, the maximum regeneration efficiency of98.01%; potassium permanganate regenerant as the bestregenerationconditions in neutral and alkaline pH, potassium permanganate dosage20mL/g maximum regeneration efficiency, maximum regeneration efficiency of98.28%. Fenton recycled equilibrium regeneration efficiency of42.8%and99.17%of the the potassium permanganate recycled its balance regenerationrate.