Adsorption of L-phenylalanine on ordered mesoporous carbons prepared by hard template method
PBN-AR
Instytucja
Wydział Chemii (Uniwersytet im. Adama Mickiewicza w Poznaniu)
Źródłowe zdarzenia ewaluacyjne
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Journal of the Taiwan Institute of Chemical Engineers
ISSN
1876-1070
EISSN
Wydawca
ELSEVIER SCIENCE BV
DOI
URL
Rok publikacji
2015
Numer zeszytu
2
Strony od-do
347-353
Numer tomu
45
Link do pełnego tekstu
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Streszczenia
Język
en
Treść
Ordered mesoporous carbons modified with cerium were applied for removal of tartrazine and sunset yellow FCF from aqueous solutions. These novel materials were characterised by different techniques such as X-ray diffraction, low-temperature nitrogen sorption, scanning electron microscopy and laser diffraction. Unique physicochemical properties of the mesoporous adsorbents (well developed surface area, large pore volume, regular structure) in addition to the presence of various functional groups make them promising materials for efficient removal of azo dyes. Adsorption experiments were carried out as batch studies for different contact times and initial dye concentrations. The dye adsorption equilibrium was rapidly attained after 50 min for tartrazine and 70 min for sunset yellow FCF. Percentage of dyes removal was greater at lower initial concentrations (100% for the concentrations below 12.5 mg/L for tartrazine and below 25 mg/L for sunset yellow FCF) and smaller at higher initial concentrations (35-66% for 100 mg/L of tartrazine solution and 76-97% for 100 mg/L of sunset yellow FCF solution). The equilibrium data were analysed by the Langmuir and Freundlich models, which revealed that the former model was more suitable to describe the tartrazine and sunset yellow FCF adsorption than the latter one. The maximum adsorption capacities of the mesoporous carbons modified with cerium towards tartrazine were in the range 128.04-171.20 mg/g, while towards sunset yellow FCF they were from the range 223.91-323.91 mg/g. Pseudo-first-order and pseudo-second-order kinetic models and intraparticle diffusion model were used to evaluate the adsorption kinetic data. The kinetic data of two azo dyes were better described by the pseudo-second-order model. (C) 2015 Elsevier B.V. All rights reserved.
Cechy publikacji
discipline:Chemia
discipline:Technologia chemiczna – dziedzina nauk chemicznych
discipline:Chemistry
discipline:Chemical Technology – field of chemical sciences
Original article
Original article presents the results of original research or experiment.
Oryginalny artykuł naukowy
Oryginalny artykuł naukowy przedstawia rezultaty oryginalnych badań naukowych lub eksperymentu.
Inne
System-identifier
PBN-R:768943
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