Degradation of anionic dye (acid orange II) by bentonite supported nano-zero valent iron

Research output: Contribution to journalArticle

Abstract

The nano-zero valent iron (nZVI) has been reported as an excellent material to decolourize the anionic dyes. Aggregation of nZVI tends to reduce its reactivity. Due to this reason, modifications of nZVI were applied by using bentonite. Bentonite supported nano-zero valent irons (B-nZVI) was synthesized by using reduction method of ferrous ions and sodium borohydride in presence of bentonite. The objective of this study was to evaluate the performance of composite nanoscale zero-valent iron (nZVI) in decolorized of acid orange II from aqueous solutions. All the three adsorbent materials (nZVI, B-nZVI and bentonite) were characterized by physical, chemical, mineralogical and morphological properties such as Brunnaer-Emmett-Teller (BET) surface area, X-ray photoelectron spectroscopy with auger electron spectroscopy (XPS-AES), field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD). The batch adsorption tests for all adsorbent materials have been conducted to determine the effectiveness of both materials in dye removal. The five effects have been analyzed in Batch test among others concentration, dose, pH, kinetic and temperature. The study found in all effects, B-nZVI (qe opt = 8.9286 mg/g) showed the higher adsorption capacity followed by nZVI (qe opt = 8.1224 mg/g) and bentonite (qe opt = 5.8469 mg/g). The effectiveness of B-nZVI was due to the dispersion of nZVI particles bentonite particles, consequently provided more sites for adsorption. This study discovered that B-nZVI has a high potential to be a low-cost adsorbent for decolorized anionic dye from synthetic dye wastewater.

Original languageEnglish
Pages (from-to)1305-1310
Number of pages6
JournalAsian Journal of Chemistry
Volume31
Issue number6
DOIs
Publication statusPublished - 1 Jan 2019

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Bentonite
Coloring Agents
Iron
Degradation
Adsorbents
Adsorption
Acid Orange II
Auger electron spectroscopy
Field emission
Wastewater
Agglomeration
X ray photoelectron spectroscopy
Ions

Keywords

  • Acid orange II
  • Batch test
  • Bentonite
  • Composite nano zero valent iron

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Degradation of anionic dye (acid orange II) by bentonite supported nano-zero valent iron. / Zarime, N. A.; Wan Yaacob, Wan Zuhairi; Jamil, Habibah.

In: Asian Journal of Chemistry, Vol. 31, No. 6, 01.01.2019, p. 1305-1310.

Research output: Contribution to journalArticle

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abstract = "The nano-zero valent iron (nZVI) has been reported as an excellent material to decolourize the anionic dyes. Aggregation of nZVI tends to reduce its reactivity. Due to this reason, modifications of nZVI were applied by using bentonite. Bentonite supported nano-zero valent irons (B-nZVI) was synthesized by using reduction method of ferrous ions and sodium borohydride in presence of bentonite. The objective of this study was to evaluate the performance of composite nanoscale zero-valent iron (nZVI) in decolorized of acid orange II from aqueous solutions. All the three adsorbent materials (nZVI, B-nZVI and bentonite) were characterized by physical, chemical, mineralogical and morphological properties such as Brunnaer-Emmett-Teller (BET) surface area, X-ray photoelectron spectroscopy with auger electron spectroscopy (XPS-AES), field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD). The batch adsorption tests for all adsorbent materials have been conducted to determine the effectiveness of both materials in dye removal. The five effects have been analyzed in Batch test among others concentration, dose, pH, kinetic and temperature. The study found in all effects, B-nZVI (qe opt = 8.9286 mg/g) showed the higher adsorption capacity followed by nZVI (qe opt = 8.1224 mg/g) and bentonite (qe opt = 5.8469 mg/g). The effectiveness of B-nZVI was due to the dispersion of nZVI particles bentonite particles, consequently provided more sites for adsorption. This study discovered that B-nZVI has a high potential to be a low-cost adsorbent for decolorized anionic dye from synthetic dye wastewater.",
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AB - The nano-zero valent iron (nZVI) has been reported as an excellent material to decolourize the anionic dyes. Aggregation of nZVI tends to reduce its reactivity. Due to this reason, modifications of nZVI were applied by using bentonite. Bentonite supported nano-zero valent irons (B-nZVI) was synthesized by using reduction method of ferrous ions and sodium borohydride in presence of bentonite. The objective of this study was to evaluate the performance of composite nanoscale zero-valent iron (nZVI) in decolorized of acid orange II from aqueous solutions. All the three adsorbent materials (nZVI, B-nZVI and bentonite) were characterized by physical, chemical, mineralogical and morphological properties such as Brunnaer-Emmett-Teller (BET) surface area, X-ray photoelectron spectroscopy with auger electron spectroscopy (XPS-AES), field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD). The batch adsorption tests for all adsorbent materials have been conducted to determine the effectiveness of both materials in dye removal. The five effects have been analyzed in Batch test among others concentration, dose, pH, kinetic and temperature. The study found in all effects, B-nZVI (qe opt = 8.9286 mg/g) showed the higher adsorption capacity followed by nZVI (qe opt = 8.1224 mg/g) and bentonite (qe opt = 5.8469 mg/g). The effectiveness of B-nZVI was due to the dispersion of nZVI particles bentonite particles, consequently provided more sites for adsorption. This study discovered that B-nZVI has a high potential to be a low-cost adsorbent for decolorized anionic dye from synthetic dye wastewater.

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