Kinetics and Ecotoxicology of Arsenic Adsorption Using Zeolite 4A

Ketlyn Vollmann (Autor)

Buch | Softcover

88 Seiten

2023
Our Knowledge Publishing (Verlag)
9786206647638 (ISBN)

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This study proposed the use of kaolin from Juazeirinho, in the state of Paraíba, as a source of aluminium and silicon for the production of zeolite 4A from a hydrothermal reaction, where the synthesis procedure consisted of the thermal activation of the kaolin, which was subjected in a mulfla to a temperature of 850°C for 2 hours to become metakaolin; 3g of this metakaolin obtained was added to a Teflon/aluminium container along with 30mL of a 1.25 mols/L NaOH solution, and this system was placed in an oven at 150°C for 4 hours at autogenous pressure for the hydrothermal reaction to form zeolite 4A. The resulting material was centrifuged and washed with deionised water to a pH close to 7.0, and then dried in an oven at 100°C for approximately 15 hours. The XRD results showed that the kaolin from Juazeirinho consists mainly of kaolinite. The data from the removal tests determined by ICP-OES suggest that zeolite 4A has good adsorption capacity. The results showed that the Langmuir model is more appropriate than the Freundlich model for fitting the experimental data.

Book based on my thesis for the Degree of Doctor of Chemical Engineering. My sincere thanks go to my supervisor Prof. Dr Agenor Furigo Junior and to my co-supervisors Prof. Dr Humberto Gracher Riella and Prof. Dr Gilmar Sidney Erzinger, without whom this work would not have been possible.

Erscheinungsdatum	10.11.2023
Sprache	englisch
Maße	152 x 229 mm
Gewicht	142 g
Themenwelt	Sachbuch/Ratgeber ► Natur / Technik ► Naturwissenschaft
Themenwelt	Naturwissenschaften ► Chemie
Schlagworte	arsenic • Freundlich model • hydrothermal reaction • Langmuir • zeolite • zeolite 4A
ISBN-13	9786206647638 / 9786206647638
Zustand	Neuware