Recovery of hydroxytyrosol a high added value compound through tyrosol conversion by electro-Fenton process

Abdallah, F. B.; Hmani, Emna; Bouaziz, Mohamed; Jaziri, Mohamed; Abdelhédi, Ridha

doi:10.1016/j.seppur.2017.07.035

Cited by 14 publications

(5 citation statements)

References 37 publications

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“…However, external electricity supply severely impedes its large-scale applications. 1 To overcome the above shortcomings, increasing attention is paid to bioelectro-Fenton system in which the microbial fuel cell (MFC) is combined with electro-Fenton. In this system, bacteria in the anode chamber could oxidize the substrates to generate electrons, which are transported through an external resistor to the cathode chamber, thereby forming H 2 O 2 via the reduction of dissolved oxygen.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Electricity Generation and H₂O₂ Production in a Photocatalytic Fuel Cell and Fenton Hybrid System Assisted with Reverse Electrodialysis

2019

ACS Omega

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A novel integrating system coupled with photocatalytic fuel cell and Fenton system assisted by reverse electrodialysis (PREC) is proposed. The results demonstrate that H 2 O 2 concentration increased continuously in the reaction process to finally reach 960 mg/L and the current became stable at around 5.2 mA. The salinity-driven potential derived from the high concentration and low concentration cells in the hybrid system was 0.72 and 0.90 V respectively, at the salinity ratio of 50 and 100. The hybrid system has an energy recovery of 16%, a cathodic efficiency of 51%, and the maximum power of 76 W/m 2 at a salinity ratio of 50, with a 100 Ω external resistance. It is proved that PREC-Fenton possessed great potential in industrial wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

Enhanced Electricity Generation and H₂O₂ Production in a Photocatalytic Fuel Cell and Fenton Hybrid System Assisted with Reverse Electrodialysis

2019

ACS Omega

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“…However, less is known about their effectiveness for treating tyrosol solutions. In EO with PbO 2 or BDD anodes (Gargouri et al, 2017) and conventional EF with a Pt anode (Ben Abdallah et al, 2017), tyrosol was transformed into hydroxytyrosol, whereas up to 90% mineralization was feasible by heterogeneous EF treatment with a BDD anode, carbon felt cathode and pyrite as catalyst (Ammar et al, 2015). This work aims to study the decontamination of synthetic tyrosol solutions by adsorption and several EAOPs.…”

Section: U N C O R R E C T E D P R O O Fmentioning

confidence: 99%

“…The tyrosol content in OMWW may reach up to 25 g L −1 (McNamara et al, 2008). The recovery of antioxidant phenolic compounds from OMWW and solid wastes has been proposed as a source of biologically active polyphenols (Capasso et al, 1999;Fernández-Bolaños et al, 2002;Khoufi et al, 2008;Ben Abdallah et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Removal of tyrosol from water by adsorption on carbonaceous materials and electrochemical advanced oxidation processes

et al. 2018

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This work compares the ability of physical and chemical treatments, namely adsorption and electrochemical advanced oxidation processes, to remove tyrosol from aqueous medium. Adsorption on graphene nanoplatelets (GNPs) performed much better than that with a graphite intercalation compound. Adsorption isotherms were found to follow the Freundlich model (R = 0.96), which is characteristic of a chemisorption process. Successful electrochemical regeneration enables 5 successive adsorption/regeneration cycles before corrosion of GNPs occurs. Other typical aromatic contaminants that may coexist with tyrosol can be also adsorbed on GNPs. Percentage of regeneration efficiency of GNPs showed a higher affinity towards Lewis acids group compounds and a lower one towards Lewis base. The treatment of 100 mL of 0.723 mM tyrosol solutions in non-chlorinated and chlorinated matrices at pH 3.0 was carried out by electrochemical oxidation with electrogenerated HO (EO-HO), electro-Fenton (EF) and UVA photoelectro-Fenton (PEF). Trials were made with a BDD anode and an air-diffusion cathode at 10-30 mA cm. Hydroxyl radicals formed at the anode from water oxidation and/or in the bulk from Fenton's reaction between added Fe and generated HO, along with active chlorine produced in chlorinated medium, were the main oxidants. Tyrosol concentration always decayed following a pseudo-first-order kinetics and its mineralization rose as EO-HO < EF < PEF, more rapidly in the chlorinated matrix. The potent photolysis of intermediates under UVA radiation explained the almost total mineralization achieved by PEF in the latter medium. The effect of current density and tyrosol content on the performance of all processes was examined.

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“…Diverse synthesis procedures to produce HT have been developed, 12 including by-electrochemical oxidation of p -tyrosol by means of electro-Fenton process using a carbon fiber cloth as cathode and Pt anode, 13 biotransformation of tyrosol, 14 enzymatic synthesis using tyrosinase as biocatalyst, 15 conversion of oleuropein, 16 mild photochemical synthesis via conversion of tyrosol, 17 benchscale purification from olive mill wastewaters 18 and bacterial synthesis. 19 The production methods proposed are highly expensive and/or produce low yields or use severe conditions.…”

Section: Introductionmentioning

confidence: 99%

Production of biologically active hydroxytyrosol rich extract via catalytic conversion of tyrosol

Neji

Bouaziz

2022

RSC Adv.

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Recovery of hydroxytyrosol a high added value compound through tyrosol conversion by electro-Fenton process

Cited by 14 publications

References 37 publications

Enhanced Electricity Generation and H₂O₂ Production in a Photocatalytic Fuel Cell and Fenton Hybrid System Assisted with Reverse Electrodialysis

Enhanced Electricity Generation and H₂O₂ Production in a Photocatalytic Fuel Cell and Fenton Hybrid System Assisted with Reverse Electrodialysis

Removal of tyrosol from water by adsorption on carbonaceous materials and electrochemical advanced oxidation processes

Production of biologically active hydroxytyrosol rich extract via catalytic conversion of tyrosol

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Recovery of hydroxytyrosol a high added value compound through tyrosol conversion by electro-Fenton process

Cited by 14 publications

References 37 publications

Enhanced Electricity Generation and H2O2 Production in a Photocatalytic Fuel Cell and Fenton Hybrid System Assisted with Reverse Electrodialysis

Enhanced Electricity Generation and H2O2 Production in a Photocatalytic Fuel Cell and Fenton Hybrid System Assisted with Reverse Electrodialysis

Removal of tyrosol from water by adsorption on carbonaceous materials and electrochemical advanced oxidation processes

Production of biologically active hydroxytyrosol rich extract via catalytic conversion of tyrosol

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Enhanced Electricity Generation and H₂O₂ Production in a Photocatalytic Fuel Cell and Fenton Hybrid System Assisted with Reverse Electrodialysis

Enhanced Electricity Generation and H₂O₂ Production in a Photocatalytic Fuel Cell and Fenton Hybrid System Assisted with Reverse Electrodialysis