Development of a Co2+/PMS process involving target contaminant degradation and PMS decomposition


The use of cobalt (II) salts (Co2+) for the catalytic decomposition of peroxymonosulfate (PMS) and the subsequent production of free radicals has demonstrated high efficiency in removing organic contaminants from water. However, only a few reports are available on the systematic analysis of PMS decomposition by Co2+ and its effect on contaminant degradation kinetics. In this study, PMS decomposition was evaluated at different initial PMS (5, 10, and 15 mM) and cobalt (0.05, 0.10, and 0.20 mM) concentrations. For all of the cases in this study, over 60% PMS decomposition was achieved after 30 min. A general degradation mechanism for any contaminant was proposed, as well as a kinetic model that incorporates the PMS/contaminant molar ratio. To validate the kinetic model, acetaminophen (ACT) was used as a target contaminant along with a response surface methodology (RSM) statistical analysis. Once validated, the model was used to determine ACT degradation by the Co2+/PMS process, the chemical oxygen demand (COD), and carboxylic acid evolution using the best experimental conditions.

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Fig. 9


A :

Target contaminant


Third-order kinetic rate constant


Second-order kinetic rate constant

k :

Pseudo-first-order kinetic rate constant

\({\text{HSO}}_{\text{S}}^{ - }\) :


a :

Peroxymonosulfate molar coefficient

b :

Target contaminant molar coefficient

\(\left[ {{\text{HSO}}_{\text{S}}^{ - } } \right]\) :

Peroxymonosulfate concentration

\(\left[ {{\text{HSO}}_{\text{S}}^{ - } } \right]_{0}\) :

Peroxymonosulfate initial concentration


Target contaminant concentration

[A]0 :

Target contaminant initial concentration

t :


R 2 :

Squared correlation coefficient


  1. Abdessalem AK, Oturan N, Bellakhal N et al (2008) Experimental design methodology applied to electro-Fenton treatment for degradation of herbicide chlortoluron. Appl Catal B Environ 78:334–341.

  2. Anipsitakis GP, Dionysiou DD (2003) Degradation of organic contaminants in water with sulfate radicals generated by the conjunction of peroxymonosulfate with cobalt. Environ SciTechnol 37:4790–4797.

  3. Aurioles-López V, Polo-López MI, Fernández-Ibañez P et al (2016) Effect of iron salt counter ion in dose-response curves for inactivation of Fusarium solani in water through solar driven Fenton-like processes. Phys Chem Earth 91:46–52.

  4. Badawy MI, Ghaly MY, Gad-Allah TA (2006) Advanced oxidation processes for the removal of organophosphorus pesticides from wastewater. Desalination 194:166–175.

  5. Bokare AD, Choi W (2014) Review of iron-free Fenton-like systems for activating H2O2 in advanced oxidation processes. J Hazard Mater 275:121–135.

  6. Cheng M, Zeng G, Huang D et al (2016) Hydroxyl radicals based advanced oxidation processes (AOPs) for remediation of soils contaminated with organic compounds: a review. Chem Eng J 284:582–598.

  7. Cruz-González K, Torres-López O, García-León A et al (2010) Determination of optimum operating parameters for Acid Yellow 36 decolorization by electro-Fenton process using BDD cathode. Chem Eng J 160:199–206.

  8. Dalmázio I, Alves TMA, Augusti R (2008) An appraisal on the degradation of paracetamol by TiO2/UV system in aqueous medium. Product identification by gas chromatography-mass spectrometry (GC-MS). J Braz Chem Soc 19:81–88.

  9. Deng J, Shao Y, Gao N, Deng Y, Tan C, Zhou ZS (2014) Zero-valent iron/persulfate(Fe0/PS) oxidation acetaminophen in water. Int J Environ Sci Technol 11:881–890

  10. Ghanbari F, Moradi M (2017) Application of peroxymonosulfate and its activation methods for degradation of environmental organic pollutants: review. Chem Eng J 310:41–62.

  11. Ji Y, Dong C, Kong D, Lu J (2015) New insights into atrazine degradation by cobalt catalyzed peroxymonosulfate oxidation: kinetics, reaction products and transformation mechanisms. J Hazard Mater 285:491–500.

  12. Ji Y, Kong D, Lu J et al (2016) Cobalt catalyzed peroxymonosulfate oxidation of tetrabromobisphenol A: kinetics, reaction pathways, and formation of brominated by-products. J Hazard Mater 313:229–237.

  13. Li Z, Chen Z, Xiang Y et al (2015) Bromate formation in bromide-containing water through the cobalt-mediated activation of peroxymonosulfate. Water Res 83:132–140.

  14. Miklos DB, Remy C, Jekel M et al (2018) Evaluation of advanced oxidation processes for water and wastewater treatment—a critical review. Water Res 139:118–131

  15. Moreira FC, Boaventura RAR, Brillas E, Vilar VJP (2017) Electrochemical advanced oxidation processes: a review on their application to synthetic and real wastewaters. Appl Catal B Environ 202:217–261

  16. Pacheco-Álvarez MOA, Picos A, Pérez-Segura T, Peralta-Hernández JM (2019) Proposal for highly efficient electrochemical discoloration and degradation of azo dyes with parallel arrangement electrodes. J Electroanal Chem 838:195–203.

  17. Paramo-Vargas J, Camargo AME, Gutierrez-Granados S et al (2015) Applying electro-fenton process as an alternative to a slaughterhouse effluent treatment. J Electroanal Chem 754:80–86.

  18. Ramukutty S, Ramachandran E (2016) Mechanical studies and thermal kinetics of paracetamol crystals. Int J Solid State Mater 2:46–50

  19. Rodriguez-Narvaez OM, Peralta-Hernandez JM, Goonetilleke A, Bandala ER (2017) Treatment technologies for emerging contaminants in water: a review. Chem Eng J 323:361–380.

  20. Rodríguez-Narváez OM, Pérez LS, Yee NG et al (2018a) Comparison between fenton and fenton-like reactions for l-proline degradation. Int J Environ Sci Technol.

  21. Rodríguez-Narváez OM, Serrano-Torres O, Wrobel K et al (2018b) Production of free radicals by the Co2 +/oxone system to carry out the diclofenac degradation in aqueous medium. Water Sci Technol 78:2131–2140.

  22. Sahel K, Elsellami L, Mirali I et al (2016) Hydrogen peroxide and photocatalysis. Appl Catal B Environ 188:106–112.

  23. Tan C, Gao N, Deng Y et al (2014) Radical induced degradation of acetaminophen with Fe3O4 magnetic nanoparticles as heterogeneous activator of peroxymonosulfate. J Hazard Mater 276:452–460.

  24. Tayo LL, Caparanga AR, Doma BT, Liao C-H (2018) A review on the removal of pharmaceutical and personal care products (PPCPs) using advanced oxidation processes. J Adv Oxid Technol 21:196–214.

  25. Wang N, Zheng T, Zhang G, Wang P (2016) A review on fenton-like processes for organic wastewater treatment. J Environ Chem Eng 4:762–787.

  26. Xie G, Chang X, Adhikari BR, Thind SS, Chen A (2016) Photoelectrochemical degradation of acetaminophen and valacyclovir using nanoporous titanium dioxide. Chin J Catal 37:1062–1069

  27. Zhang Y, Zhang Q, Hong J (2017) Sulfate radical degradation of acetaminophen by novel iron–copper bimetallic oxidation catalyzed by persulfate: mechanism and degradation pathways. Appl Surf Sci 422:443–451.

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The authors would like to acknowledge the economic support of the Universidad de Guanajuato, 077/2019 (Convocatoria Institucional de Apoyo a la Investigación Científica 2019). O.M. Rodriguez-Narvaez would also like to thank CONACyT and Nayarit University for a graduate fellowship and M.O.A. Pacheco-Alvarez would like to thank CONACyT for a graduate fellowship. The authors are also grateful to Ms. Nicole Damon (DRI) for her editorial review.

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Correspondence to J. M. Peralta-Hernandez.

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Editorial responsibiility: Shahid Hussain.

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Rodriguez-Narvaez, O.M., Pacheco-Alvarez, M.O.A., Wróbel, K. et al. Development of a Co2+/PMS process involving target contaminant degradation and PMS decomposition. Int. J. Environ. Sci. Technol. 17, 17–26 (2020).

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  • Co2+/PMS process
  • Kinetic model
  • PMS decomposition
  • Acetaminophen