Microwave-enhanced Fenton-like system, Cu(II)/H2O2, for olive mill wastewater treatment.

Microwave-enhanced Fenton-like system, Cu(II)/H2O2, for olive mill wastewater treatment.

Environmental technology (2013-07-11)

Hamida Iboukhoulef, Abdeltif Amrane, Hocine Kadi

ZUSAMMENFASSUNG

Olive mill wastewater (OMW) is a substantial pollutant not only because of its high organic matter content and recalcitrant compounds such as polyphenols, but also due to its high chemical oxygen demand and biological oxygen demand. Its degradation by means of hydroxyl radicals generated from microwave application in the presence of hydrogen peroxide and Cu(II) has been investigated. The optimal experimental conditions were found to be a microwave intensity of 680 W, the presence of Cu(II) and relatively concentrated hydrogen peroxide (12 mol L(-1)). In these conditions, discolouration of OMW reached 98.0 +/- 0.2% and phenolic compounds decreased to 81.8 +/- 0.2% of their initial concentration after 12 min microwave time. Fourier transform infrared analysis confirmed that microwave degradation of phenols by means of the Fenton-like system Cu(II)/H2O2 could be an efficient solution for the treatment of olive mill wastewater.

MATERIALIEN

Produktnummer

Marke

Produktbeschreibung

216763

Sigma-Aldrich

Wasserstoffperoxid -Lösung, contains inhibitor, 30 wt. % in H₂O, ACS reagent

H1009

Sigma-Aldrich

Wasserstoffperoxid -Lösung, 30 % (w/w) in H₂O, contains stabilizer

516813

Sigma-Aldrich

Wasserstoffperoxid -Lösung, 50 wt. % in H₂O, stabilized

31642

Sigma-Aldrich

Wasserstoffperoxid-Lösung, 30% (w/w), puriss. p.a., reag. ISO, reag. Ph. Eur.

12310

Sigma-Aldrich

Eisen, ≥99%, reduced, powder (fine)

323381

Sigma-Aldrich

Wasserstoffperoxid -Lösung, contains ~200 ppm acetanilide as stabilizer, 3 wt. % in H₂O

349887

Sigma-Aldrich

Wasserstoffperoxid -Lösung, contains inhibitor, 35 wt. % in H₂O

203122

Sigma-Aldrich

Kupfer, powder, 99.999% trace metals basis

95299

Sigma-Aldrich

Wasserstoffperoxid -Lösung, purum p.a., ≥35% (RT)

349178

Sigma-Aldrich

Kupfer, foil, thickness 0.25 mm, 99.98% trace metals basis

266086

Sigma-Aldrich

Kupfer, powder, <425 μm, 99.5% trace metals basis

C3518

Sigma-Aldrich

Carbonyleisen, ≥97% Fe basis

349216

Sigma-Aldrich

Kupfer, wire, diam. 1.0 mm, ≥99.9%

44890

Sigma-Aldrich

Eisen, puriss. p.a., carbonyl-Iron powder, low in magnesium and manganese compounds, ≥99.5% (RT)

209309

Sigma-Aldrich

Eisen, powder, −325 mesh, 97%

413054

Sigma-Aldrich

Eisen, granular, 10-40 mesh, >99.99% trace metals basis

207780

Sigma-Aldrich

Kupfer, powder, <75 μm, 99%

774111

Sigma-Aldrich

Kupfer, nanopowder, 40-60 nm particle size (SAXS), ≥99.5% trace metals basis

326453

Sigma-Aldrich

Kupfer, powder (spheroidal), 10-25 μm, 98%

88597

Millipore

Wasserstoffperoxid -Lösung, 3%, suitable for microbiology

326429

Sigma-Aldrich

Kupfer, wire, diam. 0.25 mm, 99.999% trace metals basis

349208

Sigma-Aldrich

Kupfer, foil, thickness 0.025 mm, 99.98% trace metals basis

774103

Sigma-Aldrich

Kupfer, nanopowder, 60-80 nm particle size (SAXS), ≥99.5% trace metals basis

356808

Sigma-Aldrich

Eisen, foil, thickness 0.1 mm, ≥99.9% trace metals basis

61139

Sigma-Aldrich

Kupfer, turnings, purum p.a., ≥99.0%

12816

Sigma-Aldrich

Kupfer, foil, ≥99.8% (complexometric)

267945

Sigma-Aldrich

Eisen, chips, 99.98% trace metals basis

357456

Sigma-Aldrich

Kupfer, powder (dendritic), <45 μm, 99.7% trace metals basis

326410

Sigma-Aldrich

Kupfer, wire, diam. 0.64 mm, 99.995% trace metals basis

356824

Sigma-Aldrich

Eisen, wire, diam. 1.0 mm, ≥99.9% trace metals basis