Degradation of congo red in water by catalyzing PMS using ternary CoFeNi-hydrotalcite

SHI Zhou; ZENG Hanxuan; DENG Lin

doi:10.12030/j.cjee.201611067

2017 Volume 11 Issue 9

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Abstract

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SHI Zhou, ZENG Hanxuan, DENG Lin. Degradation of congo red in water by catalyzing PMS using ternary CoFeNi-hydrotalcite[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 4903-4909. doi: 10.12030/j.cjee.201611067

Citation:

SHI Zhou, ZENG Hanxuan, DENG Lin. Degradation of congo red in water by catalyzing PMS using ternary CoFeNi-hydrotalcite[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 4903-4909. doi: 10.12030/j.cjee.201611067

Degradation of congo red in water by catalyzing PMS using ternary CoFeNi-hydrotalcite

1.
College of Civil Engineering, Hunan University, Changsha 410082, China
2.
Key Laboratory of Building Safety and Energy Efficiency, Ministry of Education, Hunan University, Changsha 410082, China

Received Date: 10/03/2017
Accepted Date: 10/11/2016
Available Online: 26/08/2017

Fund Project:

Abstract

A magnetic layered double hydroxide (LDH) synthesized by coprecipitation method was used to activate peroxymonosulfate (PMS) to generate sulfate radicals (SO4-·) for the degradation of congo red (CR). Effects of initial pH, catalyst dosage and PMS dosage were discussed systematically in this study. Experiments results showed that CoFeNi-LDH/PMS system exhibited a high degradation efficiency for CR within a wide range of solution pH from 4.0 to 10.0. The degradation rate of CR increased rapidly with the increase of PMS dosage or catalyst dosage. After three cyclic utilization of CoFeNi-LDH, the degradation rate of CR degraded by CoFeNi-LDH/PMS system still remained 88% within 20 min. Above results indicated that the novel catalyst have a bright prospects in dyes treatment not only because of its efficient catalytic effect but also the characteristic of easily separated from water.
- layered double hydroxide,
- magnetic,
- catalytic,
- peroxymonosulfate,
- congo red

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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Degradation of congo red in water by catalyzing PMS using ternary CoFeNi-hydrotalcite

Received Date: 10/03/2017

Accepted Date: 10/11/2016

Available Online: 26/08/2017

Fund Project:

Key words:

Abstract: A magnetic layered double hydroxide (LDH) synthesized by coprecipitation method was used to activate peroxymonosulfate (PMS) to generate sulfate radicals (SO4-·) for the degradation of congo red (CR). Effects of initial pH, catalyst dosage and PMS dosage were discussed systematically in this study. Experiments results showed that CoFeNi-LDH/PMS system exhibited a high degradation efficiency for CR within a wide range of solution pH from 4.0 to 10.0. The degradation rate of CR increased rapidly with the increase of PMS dosage or catalyst dosage. After three cyclic utilization of CoFeNi-LDH, the degradation rate of CR degraded by CoFeNi-LDH/PMS system still remained 88% within 20 min. Above results indicated that the novel catalyst have a bright prospects in dyes treatment not only because of its efficient catalytic effect but also the characteristic of easily separated from water.

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Degradation of congo red in water by catalyzing PMS using ternary CoFeNi-hydrotalcite

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References

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通讯作者: 陈斌, bchen63@163.com

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