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Carbon Materials Inhibit Formation of Nitrated Aromatic Products in Treatment of Phenolic Compounds by Thermal Activation of Peroxydisulfate in the Presence of Nitrite.
Environ Sci Technol. 2019 Aug 06; 53(15):9054-9062.ES

Abstract

Recent studies have reported that toxic nitrated aromatic products are generated during treatment of phenolic compounds by thermally activated peroxydisulfate (thermal/PDS) in the presence of nitrite (NO2-). This work explored the potential of carbon materials on controlling the formation of nitrated aromatic products using phenol as a model compound. In the presence of selected carbon materials including diverse carbon nanotubes (CNT) and powdered activated carbon (PAC), the transformation kinetics of phenol was significantly enhanced, primarily attributed to nonradical activation of PDS by carbon materials. Nitrophenols (NPs) including 2-NP and 4-NP were formed in phenol oxidation by the thermal/PDS/NO2- process, due to the reaction of phenol with reactive nitrogen species generated from NO2- oxidation. The addition of carbon materials obviously inhibited NPs formation under various experimental conditions. The bonding of nitro groups on the CNT surface was clearly confirmed by means of various characterizations, probably resulting from the competitive reaction of reactive nitrogen species with CNT vs phenol. The controlling effect of carbon materials was also verified in the cases of other phenolic compounds. Therefore, the addition of carbon materials may be a promising approach to control the formation of undesirable nitrated byproducts by the thermal/PDS process in the presence of NO2-.

Authors+Show Affiliations

Institute of Environmental and Ecological Engineering , Guangdong University of Technology , Guangzhou 510006 , China. State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology , Harbin 150090 , China.Institute of Environmental and Ecological Engineering , Guangdong University of Technology , Guangzhou 510006 , China. State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology , Harbin 150090 , China.Institute of Environmental and Ecological Engineering , Guangdong University of Technology , Guangzhou 510006 , China.Key Laboratory of Songliao Aquatic Environment, Ministry of Education, School of Municipal and Environmental Engineering , Jilin Jianzhu University , Changchun 130118 , China.School of Municipal and Environmental Engineering , Shandong Jianzhu University , Jinan 250010 , China.State Key Laboratory of Urban Water Resource and Environment , Harbin Institute of Technology , Harbin 150090 , China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31282149

Citation

Guan, Chaoting, et al. "Carbon Materials Inhibit Formation of Nitrated Aromatic Products in Treatment of Phenolic Compounds By Thermal Activation of Peroxydisulfate in the Presence of Nitrite." Environmental Science & Technology, vol. 53, no. 15, 2019, pp. 9054-9062.
Guan C, Jiang J, Shen Y, et al. Carbon Materials Inhibit Formation of Nitrated Aromatic Products in Treatment of Phenolic Compounds by Thermal Activation of Peroxydisulfate in the Presence of Nitrite. Environ Sci Technol. 2019;53(15):9054-9062.
Guan, C., Jiang, J., Shen, Y., Pang, S., Luo, C., & Zhao, X. (2019). Carbon Materials Inhibit Formation of Nitrated Aromatic Products in Treatment of Phenolic Compounds by Thermal Activation of Peroxydisulfate in the Presence of Nitrite. Environmental Science & Technology, 53(15), 9054-9062. https://doi.org/10.1021/acs.est.9b01354
Guan C, et al. Carbon Materials Inhibit Formation of Nitrated Aromatic Products in Treatment of Phenolic Compounds By Thermal Activation of Peroxydisulfate in the Presence of Nitrite. Environ Sci Technol. 2019 Aug 6;53(15):9054-9062. PubMed PMID: 31282149.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Carbon Materials Inhibit Formation of Nitrated Aromatic Products in Treatment of Phenolic Compounds by Thermal Activation of Peroxydisulfate in the Presence of Nitrite. AU - Guan,Chaoting, AU - Jiang,Jin, AU - Shen,Yongming, AU - Pang,Suyan, AU - Luo,Congwei, AU - Zhao,Xi, Y1 - 2019/07/18/ PY - 2019/7/10/pubmed PY - 2019/11/30/medline PY - 2019/7/9/entrez SP - 9054 EP - 9062 JF - Environmental science & technology JO - Environ. Sci. Technol. VL - 53 IS - 15 N2 - Recent studies have reported that toxic nitrated aromatic products are generated during treatment of phenolic compounds by thermally activated peroxydisulfate (thermal/PDS) in the presence of nitrite (NO2-). This work explored the potential of carbon materials on controlling the formation of nitrated aromatic products using phenol as a model compound. In the presence of selected carbon materials including diverse carbon nanotubes (CNT) and powdered activated carbon (PAC), the transformation kinetics of phenol was significantly enhanced, primarily attributed to nonradical activation of PDS by carbon materials. Nitrophenols (NPs) including 2-NP and 4-NP were formed in phenol oxidation by the thermal/PDS/NO2- process, due to the reaction of phenol with reactive nitrogen species generated from NO2- oxidation. The addition of carbon materials obviously inhibited NPs formation under various experimental conditions. The bonding of nitro groups on the CNT surface was clearly confirmed by means of various characterizations, probably resulting from the competitive reaction of reactive nitrogen species with CNT vs phenol. The controlling effect of carbon materials was also verified in the cases of other phenolic compounds. Therefore, the addition of carbon materials may be a promising approach to control the formation of undesirable nitrated byproducts by the thermal/PDS process in the presence of NO2-. SN - 1520-5851 UR - https://www.unboundmedicine.com/medline/citation/31282149/Carbon_Materials_Inhibit_Formation_of_Nitrated_Aromatic_Products_in_Treatment_of_Phenolic_Compounds_by_Thermal_Activation_of_Peroxydisulfate_in_the_Presence_of_Nitrite_ L2 - https://dx.doi.org/10.1021/acs.est.9b01354 DB - PRIME DP - Unbound Medicine ER -