Application of the Fenton process in the elimination of helminth eggs.

Application of the Fenton process in the elimination of helminth eggs.

Journal of water and health (2014-12-05)

Sandra Isabel Escobar-Megchún, Hugo Alejandro Nájera-Aguilar, Magaly González-Hilerio, Javier Gutiérrez-Jiménez, Rubén Fernando Gutiérrez-Hernández, María Neftalí Rojas-Valencia

PMID25473981

초록

This study relates to a method for evaluating the degradation efficiency of Ascaris lumbricoides eggs through a Fenton reaction, using hydrogen peroxide (H2O2) at 100, 250, and 500 mg/L, ferrous sulfate (FeSO4) at 458 mg/L Fe(2+) and pH values of 3, 4.5, and 6. The experiments were conducted according to a 3(2) experimental design, with 1:1, 3:1, and 5:1 (H2O2/Fe(2+)) molar ratios. The oxidation and flocculation stages were performed at 130 rpm during 2 hours and at 25-30 rpm during 20 min, respectively. As a result of the Fenton reaction, an average of 91.2% Ascaris lumbricoides egg degradation was achieved at pH 6 using a 500 mg/L dose of H2O2 and a 3:1 (H2O2/Fe(2+)) molar ratio. Thus, this process is an alternative for eliminating parasites that are resistant to conventional disinfection processes and significantly reduces the human health hazard they represent.

MATERIALS

제품 번호

브랜드

제품 설명

IRMM524B

Iron, IRMM^®, certified reference material, 0.5 mm wire

18304

Sigma-Aldrich

Hydrogen peroxide solution, 34.5-36.5%

95321

Supelco

Hydrogen peroxide solution, ≥30%, for trace analysis

95294

Sigma-Aldrich

Hydrogen peroxide solution, tested according to Ph. Eur.

88597

Millipore

Hydrogen peroxide solution, 3%, suitable for microbiology

267945

Sigma-Aldrich

Iron, chips, 99.98% trace metals basis

356808

Sigma-Aldrich

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

F8263

Sigma-Aldrich

Iron(II) sulfate heptahydrate, suitable for plant cell culture, ≥99%

H1009

Sigma-Aldrich

Hydrogen peroxide solution, 30 % (w/w) in H₂O, contains stabilizer

F8633

Sigma-Aldrich

Iron(II) sulfate heptahydrate, BioReagent, suitable for cell culture, suitable for insect cell culture, ≥99%

44890

Sigma-Aldrich

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

16911

Supelco

Hydrogen peroxide solution, 30 % (w/w), for ultratrace analysis

GF62438520

Iron, rod, 200mm, diameter 25mm, as drawn, 98+%

GF90625181

Iron, rod, 1000mm, diameter 2.0mm, as drawn, 99.95%

GF01160143

Iron, foil, 100x100mm, thickness 2.0mm, as rolled, 99.95%

GF60615503

Iron, rod, 100mm, diameter 2.0mm, as drawn, 99.95%

GF45140925

Iron, rod, 50mm, diameter 5.0mm, as drawn, 99.99+%

GF60679862

Iron, rod, 500mm, diameter 6.35mm, as drawn, 98+%

GF16200032

Iron, rod, 100mm, diameter 10.0mm, as drawn, 99.99+%

GF08067214

Iron, foil, 100x100mm, thickness 2.0mm, as rolled, armco« soft ingot 99.8%

GF42616076

Iron, rod, 100mm, diameter 5.0mm, as drawn, 99.99+%

GF30262812

Iron, rod, 500mm, diameter 25mm, as drawn, 98+%

GF45684232

Iron, rod, 25mm, diameter 10.0mm, as drawn, 99.99+%

GF15174255

Iron, tube, 200mm, outside diameter 10.6mm, inside diameter 10.0mm, wall thickness 0.3mm, as drawn, 99.8+%

GF88927543

Iron, rod, 1000mm, diameter 2.0mm, as drawn, 99.99+%

GF61432523

Iron, foil, not light tested, 25x25mm, thickness 0.002mm, 99.85%

GF26423737

Iron, foil, 25x25mm, thickness 0.9mm, as rolled, 99.5%

GF48235013

Iron, tube, 1000mm, outside diameter 2.0mm, inside diameter 1.6mm, wall thickness 0.2mm, as drawn, 99.5%

GF33764979

Iron, tube, 100mm, outside diameter 12.7mm, inside diameter 9.5mm, wall thickness 1.6mm, annealed, 99.5%

GF50403440

Iron, tube, 1000mm, outside diameter 12.0mm, inside diameter 10mm, wall thickness 1.0mm, annealed, 99.5%