Catalytic degradation and mechanism of pentachlorophenol by nano Fe/Cu bimetal and vitamin B12

XING Yue; SUN Liping; ZHANG Tingting; QIU Chunsheng; WANG Shaopo

doi:10.12030/j.cjee.201701007

2017 Volume 11 Issue 9

Article Contents

Abstract

References

Previous Article Next Article

XING Yue, SUN Liping, ZHANG Tingting, QIU Chunsheng, WANG Shaopo. Catalytic degradation and mechanism of pentachlorophenol by nano Fe/Cu bimetal and vitamin B12[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 4937-4943. doi: 10.12030/j.cjee.201701007

Citation:

XING Yue, SUN Liping, ZHANG Tingting, QIU Chunsheng, WANG Shaopo. Catalytic degradation and mechanism of pentachlorophenol by nano Fe/Cu bimetal and vitamin B12[J]. Chinese Journal of Environmental Engineering, 2017, 11(9): 4937-4943. doi: 10.12030/j.cjee.201701007

Catalytic degradation and mechanism of pentachlorophenol by nano Fe/Cu bimetal and vitamin B12

1.
School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China
2.
Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin 300384, China

Received Date: 20/03/2017
Accepted Date: 03/01/2017
Available Online: 26/08/2017

Fund Project:

Abstract

Dechlorination of chlorinated organic catalyzed by Fe/Cu bimetallic nanoparticles was studied in this work. The Fe/Cu bimetallic nanoparticles were prepared and vitamin B12 was introduced in the preparation process of experiment. The effect of Cu loading rate and the dose of vitamin B12 on the dechlorination efficiency of pentachlorophenol (PCP) was investigated. The results showed that the degradation efficiency of PCP could be enhanced effectively by the addition of vitamin B12 and nano-zero-valent copper. The dechlorination rate of PCP increased from 4.52% to 78.55% with phenol as the final degradation product instead of tetrachlorphenoxide. The specific surface area and the catalytic activity of the bimetal catalyst increased with the increasing copper loading rate. The electron transfer of the catalytic system was promoted by the addition of vitamin B12 which also increased the reduction reaction efficiency. However, the catalytic activity of the nano Fe/Cu bimetal system could be slowed down or even inhibited by high copper loading rate and concentration of vitamin B12. It was found that optimal copper loading rate and concentration of vitamin B12were 10% (mass fraction) and 20 mg·L-1, respectively. The catalytic mechanism of the nano-zero-valent copper and vitamin B12 were also discussed in order to provide valuable references for the similar researches on degradation of chlorinated organic compounds.
- nano Fe/Cu bimetal,
- vitamin B12,
- catalytic dechlorination,
- pentachlorophenol

References

[1]	许文青,樊柏林,陈明,等.五氯苯酚和五氯苯酚钠毒性作用研究进展[J]. 中国药理学与毒理学杂志,2011,25(6):596-600 Google Scholar Pub Med
[2]	陈建华,彭刚华,乔支卫,等, 固相萃取-超高效液相色谱法检测地表水中7种氯酚类化合物[J]. 中国环境监测,2015,31(3):144-149 Google Scholar Pub Med
[3]	颜爱,卞琼,刘明华.改性纤维素负载零价铁去除三氯甲烷的研究[J].中国环境科学,2014,34(1):105-110 Google Scholar Pub Med
[4]	JOHNSON T L, SCHERER M M, TRATNYEK P G. Kinetics of halogenated organic compounds degradation by iron metal[J]. Environmental Science & Technology,1996,30(8):2634-2640 Google Scholar Pub Med
[5]	张瑞华,孙红文.零价铁修复铬污染水体的实验室研究[J].农业环境科学学报,2004,23(6):1192-1195 Google Scholar Pub Med
[6]	CHEN S Y, CHEN W H, SHIHC J. Heavy metal removal from wastewater using zero-valent iron nanoparticles[J]. Water Science & Technology,2008,58(10):1947-1954 Google Scholar Pub Med
[7]	KASSAEE M Z, MOTAMEDI E, MIKHAK A, et al.Nitrate removal fromwater using iron nanoparticles produced by arc discharge vs.reduction[J]. Chemical Engineering Journal,2011,166(2):490-495 Google Scholar Pub Med
[8]	NAM S, TRATNYEK P G. Reduction of azo dyes with zero-valent iron[J]. Water Research,2000,34(6):1837-1845 Google Scholar Pub Med
[9]	郝志伟,李亮,马鲁铭.零价铁还原法脱除地下水中硝酸盐的研究[J].中国给水排水,2008,24(17):36-39 Google Scholar Pub Med
[10]	陈冰, 王晨, 王西奎.超声波-零价铁协同降解废水中活性深蓝M-2GE的研究[J]. 环境工程学报,2009,3(9):1589-1591 Google Scholar Pub Med
[11]	徐新华, 卫建军, 汪大翚. Pd/Fe及纳米Pd/Fe对氯酚的脱氯研究[J]. 中国环境科学,2004,24(1):76-80 Google Scholar Pub Med
[12]	CHENG R, WANG J L, ZHANG W X, et al. Reductive dechlorination of 2,4-dichlorophenol using nanoscale Fe⁰:Influencing factors and possible mechanism[J]. Science in China Series B:Chemistry,2007,50(4):574-579 Google Scholar Pub Med
[13]	FENG J, LIM T T. Pathways and kinetics of carbon tetrachloride and chloroform reductions by nano-scale Fe and Fe/Ni particles:Comparison with commercial micro-scale Fe and Zn[J]. Chemosphere,2005,59(9):1267-1277 Google Scholar Pub Med
[14]	WANG X Y, CHEN C, CHANG Y, et al. Dechlorination of chlorinated methanes by Pd/Fe bimetallic nanoparticles[J]. Journal of Hazardous Materials,2009,161(2/3):815-823 Google Scholar Pub Med
[15]	陶宏林,单爱琴,李海花,等.Cu/Fe双金属去除四氯化碳的研究[J].安徽农业科学,2011,39(1):10377-10379 Google Scholar Pub Med
[16]	王陆涛.纳米Cu/Fe对三氯乙烯的催化脱氯研究[D].北京:北京化工大学,2013 Google Scholar Pub Med
[17]	YANG M X, SARKAR S, BENT B E, et al. Degradation of multiply-chlorinated hydrocarbons on Cu(100)[J]. Langmuir,1997, 13(2):229-242 Google Scholar Pub Med
[18]	ASSAF-ANID N, HAYES K F, VOGEL T M. Reductive dechlorination of carbon tetrachloride by cobalamin(Ⅱ) in the presence of dithiothreitol:Mechanistic study, effect of redox potential and pH[J]. Environmental Science & Technology,1994,28(2):246-252 Google Scholar Pub Med
[19]	HUANG C C, LO S L, LIEN H L. Vitamin B₁₂-mediated hydrodechlorination of dichloromethane by bimetallic Cu/Al particles[J]. Chemical Engineering Journal,2015,273:413-420 Google Scholar Pub Med
[20]	BRANSFIELD S J, CWIERTNY D M, ROBERTS A L, et al. Influence of Cu loading and surface coverage on the reactivity of granular iron toward 1,1,1-trichloroethane[J]. Environmental Science and Technology, 2006,40(5):1485-1490 Google Scholar Pub Med
[21]	王向宇. 纳米钯/铁双金属体系对氯代有机物催化还原脱氯研究[D]. 哈尔滨:哈尔滨工业大学,2009 Google Scholar Pub Med
[22]	谢凝子,邱罡,陈少瑾.钯铁双金属体系还原脱氯水中二氯苯同分异构体[J].农业环境科学学报,2008,27(2):758-761 Google Scholar Pub Med
[23]	吴德礼, 马鲁铭.催化还原技术处理水溶液中氯代有机物的实验研究[J]. 工业水处理,2005, 25(1):21-24 Google Scholar Pub Med
[24]	张珍. 纳米级双金属体系对水中氯苯和多氯联苯的催化还原脱氯研究[D].杭州:浙江大学,2013 Google Scholar Pub Med

Access History

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Export Citation

PDF

XML

Article Metrics

Article views(2707) PDF downloads(598) Cited by(0)

Access History

Catalytic degradation and mechanism of pentachlorophenol by nano Fe/Cu bimetal and vitamin B12

Received Date: 20/03/2017

Accepted Date: 03/01/2017

Available Online: 26/08/2017

Fund Project:

Key words:

Abstract: Dechlorination of chlorinated organic catalyzed by Fe/Cu bimetallic nanoparticles was studied in this work. The Fe/Cu bimetallic nanoparticles were prepared and vitamin B12 was introduced in the preparation process of experiment. The effect of Cu loading rate and the dose of vitamin B12 on the dechlorination efficiency of pentachlorophenol (PCP) was investigated. The results showed that the degradation efficiency of PCP could be enhanced effectively by the addition of vitamin B12 and nano-zero-valent copper. The dechlorination rate of PCP increased from 4.52% to 78.55% with phenol as the final degradation product instead of tetrachlorphenoxide. The specific surface area and the catalytic activity of the bimetal catalyst increased with the increasing copper loading rate. The electron transfer of the catalytic system was promoted by the addition of vitamin B12 which also increased the reduction reaction efficiency. However, the catalytic activity of the nano Fe/Cu bimetal system could be slowed down or even inhibited by high copper loading rate and concentration of vitamin B12. It was found that optimal copper loading rate and concentration of vitamin B12were 10% (mass fraction) and 20 mg·L-1, respectively. The catalytic mechanism of the nano-zero-valent copper and vitamin B12 were also discussed in order to provide valuable references for the similar researches on degradation of chlorinated organic compounds.

HTML

Reference (24)

Catalytic degradation and mechanism of pentachlorophenol by nano Fe/Cu bimetal and vitamin B12

Abstract

References

Access History

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Access History