Soybean peroxidase (SBP) has been employed for the treatment of aqueous solutions containing pentachlorophenol (PCP) in the presence of hydrogen peroxide at pH range 5–7. Reaction carried out with 1 mg/L of PCP, 4 mg/L of H2O2, and 1.3 × 10−9 M of SBP showed a fast initial elimination of PCP (ca. 30% in 20 min), but the reaction does not go beyond the removal of 50% of the initial concentration of PCP. Modification in SBP and PCP amounts did not change the reaction profile and higher amounts of H2O2 were detrimental for the reaction. Addition of Fe(II) to the system resulted in an acceleration of the process to reach nearly complete PCP removal at pH 5 or 6; this is more probably due to a synergetic effect of the enzymatic process and Fenton reaction. However, experiments developed in tap water resulted in a lower PCP elimination, but this inconvenience can be partly overcome by leaving the tap water overnight in an open vessel before reaction.

Pentachlorophenol Removal from Water by Soybean Peroxidase and Iron(II) Salts Concerted Action

Laurenti E.
2019

Abstract

Soybean peroxidase (SBP) has been employed for the treatment of aqueous solutions containing pentachlorophenol (PCP) in the presence of hydrogen peroxide at pH range 5–7. Reaction carried out with 1 mg/L of PCP, 4 mg/L of H2O2, and 1.3 × 10−9 M of SBP showed a fast initial elimination of PCP (ca. 30% in 20 min), but the reaction does not go beyond the removal of 50% of the initial concentration of PCP. Modification in SBP and PCP amounts did not change the reaction profile and higher amounts of H2O2 were detrimental for the reaction. Addition of Fe(II) to the system resulted in an acceleration of the process to reach nearly complete PCP removal at pH 5 or 6; this is more probably due to a synergetic effect of the enzymatic process and Fenton reaction. However, experiments developed in tap water resulted in a lower PCP elimination, but this inconvenience can be partly overcome by leaving the tap water overnight in an open vessel before reaction.
230
6
1
8
http://www.kluweronline.com/issn/0049-6979/
Fenton; Hydrogen peroxide; Iron; Pentachlorophenol; Soybean peroxidase; Wastewater
Tolardo V.; Garcia-Ballesteros S.; Santos-Juanes L.; Vercher R.; Amat A.M.; Arques A.; Laurenti E.
File in questo prodotto:
File Dimensione Formato  
SBP-Fe-PCP_postprint_manuscript.pdf

Accesso aperto con embargo fino al 14/06/2020

Descrizione: Articolo completo, versione post-print dell'autore
Tipo di file: POSTPRINT (VERSIONE FINALE DELL’AUTORE)
Dimensione 498.68 kB
Formato Adobe PDF
498.68 kB Adobe PDF Visualizza/Apri
Tolardo et al. - Unknown - Pentachlorophenol Removal from Water by Soybean Peroxidase and Iron(II) Salts Concerted Action.pdf

Accesso riservato

Descrizione: PDF editoriale dell'articolo
Tipo di file: PDF EDITORIALE
Dimensione 1.11 MB
Formato Adobe PDF
1.11 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1705060
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 5
  • ???jsp.display-item.citation.isi??? 5
social impact