Journal of Surface Science and Technology

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Surface Modification of Fly Ash by Poly(1,5-Diaminonaphthalene) for Removal of Hexavalent Chromium from Water


Affiliations
1 Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, CauGiay, Hanoi, Viet Nam
2 School of Chemical Engineering, Hanoi University of Science and Technology, 1 Dai Co Viet, Hanoi, Viet Nam
     

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The Fly Ash (FA) was treated by NaOH solution in order to transform into the zeolite-like structure. Poly(1,5-diaminonaphthalene) [p(1,5-DAN)] was synthesized via in-situ chemical oxidation on the surface of NaOH-Treated Fly Ash (TFA) to form p(1,5-DAN)/TFA composite. The p(1,5-DAN)/TFA composite was used as a novel sorbent for removal of Cr(VI) ions from aqueous solutions. The maximum adsorption capacity (at pH 2, 298 K) calculated according to Langmuir isotherm model was 4.4 mg/g. This result suggested that p(1,5-DAN)/TFA was a promising adsorbent for Cr(VI) ions in the environmental treatment.

Keywords

Chromium Removal, Fly Ash Composite, Poly(1,5-Diaminonaphthalene).
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  • Surface Modification of Fly Ash by Poly(1,5-Diaminonaphthalene) for Removal of Hexavalent Chromium from Water

Abstract Views: 277  |  PDF Views: 2

Authors

Dzung T. Nguyen
Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, CauGiay, Hanoi, Viet Nam
Minh X. Vu
Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, CauGiay, Hanoi, Viet Nam
Huy L. Nguyen
School of Chemical Engineering, Hanoi University of Science and Technology, 1 Dai Co Viet, Hanoi, Viet Nam

Abstract


The Fly Ash (FA) was treated by NaOH solution in order to transform into the zeolite-like structure. Poly(1,5-diaminonaphthalene) [p(1,5-DAN)] was synthesized via in-situ chemical oxidation on the surface of NaOH-Treated Fly Ash (TFA) to form p(1,5-DAN)/TFA composite. The p(1,5-DAN)/TFA composite was used as a novel sorbent for removal of Cr(VI) ions from aqueous solutions. The maximum adsorption capacity (at pH 2, 298 K) calculated according to Langmuir isotherm model was 4.4 mg/g. This result suggested that p(1,5-DAN)/TFA was a promising adsorbent for Cr(VI) ions in the environmental treatment.

Keywords


Chromium Removal, Fly Ash Composite, Poly(1,5-Diaminonaphthalene).

References





DOI: https://doi.org/10.18311/jsst%2F2018%2F20171