Effective degradation of reactive brilliant orange X-GN by heterogeneous Fenton reaction using zero-valent iron and H2O2

Lin Guanghui; Wu Jinhua; Li Ping; Wang Xiangde; Yang Bo

2013 Volume 7 Issue 3

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Abstract

References

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Lin Guanghui, Wu Jinhua, Li Ping, Wang Xiangde, Yang Bo. Effective degradation of reactive brilliant orange X-GN by heterogeneous Fenton reaction using zero-valent iron and H2O2[J]. Chinese Journal of Environmental Engineering, 2013, 7(3): 913-917.

Citation:

Lin Guanghui, Wu Jinhua, Li Ping, Wang Xiangde, Yang Bo. Effective degradation of reactive brilliant orange X-GN by heterogeneous Fenton reaction using zero-valent iron and H2O2[J]. Chinese Journal of Environmental Engineering, 2013, 7(3): 913-917.

Effective degradation of reactive brilliant orange X-GN by heterogeneous Fenton reaction using zero-valent iron and H2O2

1.
Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Regular Higher Education Institutions, Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, China
2.
School of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, China

Received Date: 10/10/2011
Accepted Date: 06/09/2011
Available Online: 18/03/2013

Fund Project:

Abstract

Heterogeneous Fenton like system was established with zero-valent iron and hydrogen peroxide to degradate an azo dye reactive brilliant orange (X-GN). The effects of initial pH, ZVI and H2O2 dosage, and reaction temperature were investigated. The results showed that 96.2% degradation efficiency of X-GN after 60 min reaction was achieved in the presence of Fe0 (0.8 g/L) and H2O2 (5 mmol/L) at initial pH 3.0 and 30℃. Optimum dosage for ZVI and H2O2 were found to be 0.8 g/L and 5 mmol/L. ·OH would be consumed in other ways causing the decrease of X-GN degradation efficiency as the dosage of ZVI and H2O2 were higher than 0.8 g/L and 5 mmol/L. Lower pH and higher reaction temperature were favorable for X-GN degradation. The degradation of X-GN followed the pseudo first order kinetics and the pseudo-first order rate constant k was estimated as 0.064 min-1(30℃). The activity energy of X-GN degradation was found to be 80.62 kJ/mol. The UV-vis spectra indicated that both the naphthalene ring and the N=N group of X-GN were destroyed during the reaction.
- zero-valent iron,
- hydrogen peroxide,
- heterogeneous Fenton,
- reactive brilliant orange

References

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沈阳化工大学材料科学与工程学院沈阳 110142

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Effective degradation of reactive brilliant orange X-GN by heterogeneous Fenton reaction using zero-valent iron and H2O2

Received Date: 10/10/2011

Accepted Date: 06/09/2011

Available Online: 18/03/2013

Fund Project:

Key words:

Abstract: Heterogeneous Fenton like system was established with zero-valent iron and hydrogen peroxide to degradate an azo dye reactive brilliant orange (X-GN). The effects of initial pH, ZVI and H2O2 dosage, and reaction temperature were investigated. The results showed that 96.2% degradation efficiency of X-GN after 60 min reaction was achieved in the presence of Fe0 (0.8 g/L) and H2O2 (5 mmol/L) at initial pH 3.0 and 30℃. Optimum dosage for ZVI and H2O2 were found to be 0.8 g/L and 5 mmol/L. ·OH would be consumed in other ways causing the decrease of X-GN degradation efficiency as the dosage of ZVI and H2O2 were higher than 0.8 g/L and 5 mmol/L. Lower pH and higher reaction temperature were favorable for X-GN degradation. The degradation of X-GN followed the pseudo first order kinetics and the pseudo-first order rate constant k was estimated as 0.064 min-1(30℃). The activity energy of X-GN degradation was found to be 80.62 kJ/mol. The UV-vis spectra indicated that both the naphthalene ring and the N=N group of X-GN were destroyed during the reaction.

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Effective degradation of reactive brilliant orange X-GN by heterogeneous Fenton reaction using zero-valent iron and H2O2

Abstract

References

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通讯作者: 陈斌, bchen63@163.com

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