| The coexistence of surfactant can affect the adsorption of organic pollutants on the dry-land soil significantly.In this paper,We study the effects of different surfactants,cetyltrimethylammonium bromide(CTMAB) and sodium dodecylsulphonate(SDS),on the adsorption characteristics of phenol on Lou soil.The results show that with the increase of concentration of the CTMAB,the phenol adsorption ability of the soil at both 20℃ and 40℃ is enhanced,the effects of CTMAB concentration on phenol adsorption is ordered by 0.01 mol/LCTMAB>0.005 mol/LCTMAB>0.002 5 mol/LCTMAB>CK.The phenol adsorption changes from positive temperature effect to negative temperature effect with increase of CTMAB concentration when the temperature rises.In contrast,when the equilibrium concentration of phenol is less than 0.09 mmol/L,all the phenol adsorptions on soil coexisted with different SDS concentration are close to each other and are lower than that on CK at both temperatures.Furthermore,with increase of equilibrium concentration of phenol,the phenol adsorption on soil with SDS coexistence increases significantly and exceeds that on CK.The phenol adsorption changes also from positive temperature effect to negative temperature effect with increase of SDS concentration when the temperature rises. |