Abstract
Adsorption of organic compounds in model and real wastewater onto a hydrotalcite-like compound (HT) was performed to evaluate the adsorbability of these organic compounds and the effect of coexisting additives. The adsorption (inclusion) state of organic compounds was also discussed based on the X-ray diffraction pattern. The 1/n values obtained using the Freundlich equation for model wastewater were larger than those for dyestuff solutions, indicating the effect of coexisting additives on the adsorbability of organic compounds. Among the coexisting additives, Na2CO3 had the greatest effect compared to surfactants, PVA and Na2SO4. Dyestuffs, surfactants and PVA were assumed to be included on a plane surface between host layers of HT. A lower adsorbability was observed in real dye wastewater than in model wastewater.
