At the same time, the equilibrium point is also the turning point of competitive adsorption, from positiveadsorption to negative adsorption or from negative absorption to positiveadsorption;
同时，该平衡点也是两组分竞争吸附的转折点，从正吸附变为负吸附或从负吸附变为正吸附；
2
A cationic polymeric flocculant was chosen because its hydrolysate with positive ammonium group enhanced the adsorption of residual COD and improved the flocculation efficiency.
The phenol adsorption changes also from positive temperature effect to negative temperature effect with increase of SDS concentration when the temperature rises.