This paper deals with a preliminary study aimed at investigating the adsorption capacity of an innovative natural environmental friendly adsorbing material, consisting in an organo-zeolite, made by irreversibly binding humic acids onto natural zeolite. The removal of ibuprofen sodium salt, a non-steroidal anti-inflammatory drug among the most detected emerging contaminants into aquatic environments, was investigated by batch tests. Experiments were carried out under neutral pH and at a temperature of 25 ° C. The kinetic and the equilibrium adsorption capacity were also investigated. Data show that a pseudo-second order rate equation can be used to describe the kinetics of Ibuprofen adsorption, while the equilibrium adsorption is adequately described by the Langmuir isotherm model. A comparison between the organo-zeolite and the raw zeolite shows that the adsorption capacity of the organo-zeolite was about 3 times higher than that of the raw material with a maximum amount can be adsorbed (q max), extracted by Langmuir equation, of 0.205 mg g−1 and 0.078 mg g−1 , respectively.
Ibuprofen adsorption on organo-zeolite: Experimental and modelling analysis / Leone, Vincenzo; Chanese, Simenone; Musmarra, Dino; Erto, Alessandro; Iovino, Pasquale. - In: ADVANCED SCIENCE LETTERS. - ISSN 1936-6612. - 23:6(2017), pp. 5876-5878. [10.1166/asl.2017.9055]
Ibuprofen adsorption on organo-zeolite: Experimental and modelling analysis
LEONE, VINCENZO;Musmarra, Dino;Erto, Alessandro;Iovino, Pasquale
2017
Abstract
This paper deals with a preliminary study aimed at investigating the adsorption capacity of an innovative natural environmental friendly adsorbing material, consisting in an organo-zeolite, made by irreversibly binding humic acids onto natural zeolite. The removal of ibuprofen sodium salt, a non-steroidal anti-inflammatory drug among the most detected emerging contaminants into aquatic environments, was investigated by batch tests. Experiments were carried out under neutral pH and at a temperature of 25 ° C. The kinetic and the equilibrium adsorption capacity were also investigated. Data show that a pseudo-second order rate equation can be used to describe the kinetics of Ibuprofen adsorption, while the equilibrium adsorption is adequately described by the Langmuir isotherm model. A comparison between the organo-zeolite and the raw zeolite shows that the adsorption capacity of the organo-zeolite was about 3 times higher than that of the raw material with a maximum amount can be adsorbed (q max), extracted by Langmuir equation, of 0.205 mg g−1 and 0.078 mg g−1 , respectively.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
