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4-Chlorophenol degradation using ultrasound/peroxymonosulfate/nanoscale zero valent iron: Reusability, identification of degradation intermediates and potential application for real wastewater.
Chemosphere. 2018 Jun; 201:370-379.C

Abstract

In this study, nanoscale-zero valent iron (nZVI) was synthesized and its function was assessed in ultrasound (US)/peroxymonosulfate (PMS)/nZVI process to degrade 4-chlorphenol (4-CP). The influential operation parameters of US/PMS/nZVI were evaluated on 4-CP degradation. 95% of 4-CP was degraded during 30 min under the conditions of pH = 3.0, nZVI = 0.4 g/L, PMS = 1.25 mM, US power = 200 W. The rate constants of 4-CP degradation for US/PMS/nZVI, PMS/nZVI, US/PMS and US/nZVI were 0.1159, 0.03, 0.0134 and 0.0088 min-1 respectively. Simultaneous application of US and nZVI synergistically increased 4-CP degradation and PMS activation. nZVI was compared with Fe2+, Fe3+ and micro-ZVI and their results indicated high performance of nZVI compared to others. Reusability of nZVI was examined in four cycles. nZVI exhibited that reusability was acceptable in three runs. The results of effect of anions showed that phosphate had significant inhibitory effect on 4-CP degradation in US/PMS/nZVI process. The scavenging experiments indicated that hydroxyl radical had more contribution compared to sulfate radical. Intermediates of 4-CP degradation were identified including five aromatic compounds. Reaction pathway of 4-CP degradation was proposed. Finally, the performance of US/PMS/nZVI process was evaluated on real petrochemical wastewater. The results showed that US/PMS/nZVI can be a suitable pretreatment for biological treatment.

Authors+Show Affiliations

Department of Environmental Health Engineering, Behbahan Faculty of Medical Sciences, Behbahan, Iran.Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.Behbahan Faculty of Medical Sciences, Behbahan, Iran.Environmental Science and Technology Research Center, Department of Environmental Health Engineering, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran.Department of Environmental Health Engineering, Abadan School of Medical Sciences, Abadan, Iran. Electronic address: Ghanbari.env@gmail.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29525665

Citation

Barzegar, Gelavizh, et al. "4-Chlorophenol Degradation Using Ultrasound/peroxymonosulfate/nanoscale Zero Valent Iron: Reusability, Identification of Degradation Intermediates and Potential Application for Real Wastewater." Chemosphere, vol. 201, 2018, pp. 370-379.
Barzegar G, Jorfi S, Zarezade V, et al. 4-Chlorophenol degradation using ultrasound/peroxymonosulfate/nanoscale zero valent iron: Reusability, identification of degradation intermediates and potential application for real wastewater. Chemosphere. 2018;201:370-379.
Barzegar, G., Jorfi, S., Zarezade, V., Khatebasreh, M., Mehdipour, F., & Ghanbari, F. (2018). 4-Chlorophenol degradation using ultrasound/peroxymonosulfate/nanoscale zero valent iron: Reusability, identification of degradation intermediates and potential application for real wastewater. Chemosphere, 201, 370-379. https://doi.org/10.1016/j.chemosphere.2018.02.143
Barzegar G, et al. 4-Chlorophenol Degradation Using Ultrasound/peroxymonosulfate/nanoscale Zero Valent Iron: Reusability, Identification of Degradation Intermediates and Potential Application for Real Wastewater. Chemosphere. 2018;201:370-379. PubMed PMID: 29525665.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - 4-Chlorophenol degradation using ultrasound/peroxymonosulfate/nanoscale zero valent iron: Reusability, identification of degradation intermediates and potential application for real wastewater. AU - Barzegar,Gelavizh, AU - Jorfi,Sahand, AU - Zarezade,Vahid, AU - Khatebasreh,Masoumeh, AU - Mehdipour,Fayyaz, AU - Ghanbari,Farshid, Y1 - 2018/02/27/ PY - 2017/12/06/received PY - 2018/01/31/revised PY - 2018/02/23/accepted PY - 2018/3/12/pubmed PY - 2018/8/2/medline PY - 2018/3/12/entrez KW - 4-Chlorophenol KW - Intermediates KW - Peroxymonosulfate KW - Ultrasound KW - nZVI SP - 370 EP - 379 JF - Chemosphere JO - Chemosphere VL - 201 N2 - In this study, nanoscale-zero valent iron (nZVI) was synthesized and its function was assessed in ultrasound (US)/peroxymonosulfate (PMS)/nZVI process to degrade 4-chlorphenol (4-CP). The influential operation parameters of US/PMS/nZVI were evaluated on 4-CP degradation. 95% of 4-CP was degraded during 30 min under the conditions of pH = 3.0, nZVI = 0.4 g/L, PMS = 1.25 mM, US power = 200 W. The rate constants of 4-CP degradation for US/PMS/nZVI, PMS/nZVI, US/PMS and US/nZVI were 0.1159, 0.03, 0.0134 and 0.0088 min-1 respectively. Simultaneous application of US and nZVI synergistically increased 4-CP degradation and PMS activation. nZVI was compared with Fe2+, Fe3+ and micro-ZVI and their results indicated high performance of nZVI compared to others. Reusability of nZVI was examined in four cycles. nZVI exhibited that reusability was acceptable in three runs. The results of effect of anions showed that phosphate had significant inhibitory effect on 4-CP degradation in US/PMS/nZVI process. The scavenging experiments indicated that hydroxyl radical had more contribution compared to sulfate radical. Intermediates of 4-CP degradation were identified including five aromatic compounds. Reaction pathway of 4-CP degradation was proposed. Finally, the performance of US/PMS/nZVI process was evaluated on real petrochemical wastewater. The results showed that US/PMS/nZVI can be a suitable pretreatment for biological treatment. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/29525665/4_Chlorophenol_degradation_using_ultrasound/peroxymonosulfate/nanoscale_zero_valent_iron:_Reusability_identification_of_degradation_intermediates_and_potential_application_for_real_wastewater_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(18)30355-2 DB - PRIME DP - Unbound Medicine ER -