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Simultaneous sorption of crystal violet and 2-naphthol to bentonite with different CECs

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Abstract.
This work was to examine the feasibility and efficiency to use bentonite for simultaneous removal of
cationic dyes and hydrophobic organic carbons (HOCs) from water. The sorption capacities of crystal violet
(CV) on two bentonites and one activated carbon were compared. Simultaneous sorption of CV and
2-naphthol on the two bentonites were tested, and the removal efficiencies of 2-naphthol by the simultaneous
sorption method and by CV modified bentonite was also compared. The experimental results
in this study showed that the bentonite is more effective in sorption of CV than the activated carbon.
With the sorption of CV, bentonite surfaces were altered from hydrophilicity to hydrophobicity, and thus
2-naphthol could be simultaneously removed. The aromatic effect between CV and 2-naphthol was supposed
to be the primary driving force for the sorption of 2-naphthol. The simultaneous sorption method
was shown to be more effective in the sorption of 2-naphthol than the CV modified bentonite. Results of
thiswork could provide novel information for the treatment ofwastewater containing both cationic dyes
and HOCs.

Keywords:
Bentonite
Dye
Hydrophobic organic compounds
Sorption

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Informasi Detail

Judul Seri

Journal of Hazardous Materials

No. Panggil

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Penerbit

London : Elsevier B.V.., 2009

Deskripsi Fisik

Journal of Hazardous Materials 166 (2009) 195–199

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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