Enhanced adsorption of phenolic compounds, commonly encountered in olive mill wastewaters, on olive husk derived activated carbons

Bioresource Technology
Chrysoula MichailofCostas Panayiotou

Abstract

Olive husk was used for the preparation of activated carbon by chemical activation with KOH. The effects of carbonization and activation time on carbon properties were evaluated. The surface area of the produced carbons was measured by means of N(2) adsorption at 77K. The carbons with the highest surface area were further characterized by means of elemental analysis, particle size measurement, Boehm titration, zeta potential measurement, and temperature programmed desorption (TPD). Subsequently they were used for adsorption of a mixture of polyphenols consisting of caffeic acid, vanillin, vanillic acid, pi-hydroxybenzoic acid and gallic acid at two temperatures, and their adsorptive capacity was compared to a commercial carbon Acticarbon CX and found to be higher enough. The role of the porosity and surface groups are discussed in relation to the adsorption forces and the properties of the adsorbed substances. A thermodynamic interpretation of the results is also attempted.

References

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Citations

Sep 27, 2013·Environmental Science and Pollution Research International·Amit BhatnagarMika Sillanpää
Sep 28, 2010·Journal of Environmental Management·Alexandro M M VargasVitor C Almeida
Jul 5, 2011·Bioresource Technology·Wu-Jun LiuXue-Song Zhang
Oct 31, 2014·Environmental Science and Pollution Research International·O F OlorundareB B Mamba
Jan 30, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Joana MadureiraIsabel M Fonseca
Apr 13, 2017·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Jing ZhangHongyu Wang
Nov 13, 2018·Environmental Science and Pollution Research International·Gustavo G CelestinoJorge Amim Júnior
Oct 17, 2019·Scientific Reports·Pascual García-PérezCarlos Bravo-Díaz
Dec 22, 2019·Bioengineering·Yolanda González-GarcíaJosé Antonio Silva-Guzman
May 13, 2019·Bioprocess and Biosystems Engineering·Hanfei CaoJinglan Wu
Jul 4, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Lei DingHuiwen Zhang
Aug 14, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Imad HamadnehAmmar H Al-Dujaili

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