Adsorption of Phenolic Compounds on Mesoporous Aluminophosphate Molecular Sieves from Aqueous Solution
J. Environ. Nanotechnol., Volume 8, No 1 (2019) pp. 06-12
Abstract
The removal of phenolic compounds through adsorption has been reported on many natural materials and activated carbon, but the adsorption on mesoporous as well as nanoporous AlPO4 has not been reported yet; hence, in the present investigation, an attempt has been to use mesoporous AlPO4 as an adsorbent for the removal of phenolic compounds (phenol and p-cresol). The formation of mesoporous AlPO4 was confirmed by FT-IR analysis. To achieve maximal adsorption, phenolic compounds’ adsorption conditions such as contact duration, pH, starting concentration of the solution, temperature and adsorbent dose were tuned. On mesoporous AlPO4, the Langmuir and Freundlich adsorption isotherms were investigated to determine monolayer and multilayer adsorption capacities. The adsorption kinetics of phenolic compounds on mesoporous AlPO4 were studied for determining thermodynamic parameters of adsorption from energy, enthalpy and entropy.
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