Original scientific paper

https://doi.org/10.15255/KUI.2013.014

Uklanjanje Cu2+, Cl− i 2,4-diklorfenoksioctene kiseline iz vodene otopine bentonitom modificiranim kitozanom

K. Ba ; College of Chemistry and Molecular Engineering / Research Institute of Environmental Science, Zhengzhou University, Zhengzhou, PR China
L. L. He ; College of Chemistry and Molecular Engineering / Research Institute of Environmental Science, Zhengzhou University, Zhengzhou, PR China
H. Tang ; College of Chemistry and Molecular Engineering / Research Institute of Environmental Science, Zhengzhou University, Zhengzhou, PR China
J. Q. Gao ; College of Chemistry and Molecular Engineering / Research Institute of Environmental Science, Zhengzhou University, Zhengzhou, PR China
S. F. Zhu ; College of Chemistry and Molecular Engineering / Research Institute of Environmental Science, Zhengzhou University, Zhengzhou, PR China
Y. Li ; College of Mechanical Engineering, Zhengzhou University, Zhengzhou, PR China
W. N. Sun ; College of Mechanical Engineering, Zhengzhou University, Zhengzhou, PR China

Abstract

Ispitivano je uklanjanje Cu2+, Cl− i 2,4-diklorfenoksioctene kiseline (2,4-D) iz vodene otopine bentonitom modificiranim kitozanom. U takvu je bentonitu povećana udaljenost među slojevima montmorilonita i time poboljšana adsorpcijska moć. Kitozan sadrži mnogo skupina −NH₂ i −OH koje također mogu koordinirati ione teških metala. Prije modificiranja kitozanom bentonit je tretiran vodenom otopinom Na₂CO₃, toplinski je obrađen te obrađen kelirajućim agensom. Modificiranim bentonitom prosječno je iz vodene otopine uklonjeno 94,87 % Cu2+, 86,19 % Cl− i 91,06 % 2,4-D.

Keywords

Bentonit; kitozan; modifikacija kemijskim spojem; adsorpcijska učinkovitost

Hrčak ID:

123792

URI

https://hrcak.srce.hr/123792

Publication date:

1.7.2014.

Article data in other languages: english

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