Výsledky vyhledávání - "Héctor M. Gutiérrez-Zapata"

Goethite (α‐FeOOH) photocatalytic activity at natural concentrations by the addition of H 2 O 2 at neutral pH and the simultaneous presence of fluoride and bicarbonate

Autor: John J. Alvear‐Daza, Janeth Sanabria, Victor A. Castaño‐Rodriguez, Alejandra Correa‐Betancourt, Silvia Binet, Francisco H. Sánchez, Guillermo A. Muñoz‐Medina, Héctor M. Gutiérrez‐Zapata, Luis R. Pizzio, Julián A. Rengifo‐Herrera

Publikováno v: Applied Research.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c1dc0572d50adc79069741fa9b9d437f
https://doi.org/10.1002/appl.202300015

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Goethite (α-FeOOH) photocatalytic activity at natural concentrations by the addition of H 2 O 2 at neutral pH and the simultaneous presence of fluoride and bicarbonate

Autor: Julián A. Rengifo-Herrera, John J. Alvear-Daza, Janeth Sanabria, Victor A. Castaño-Rodriguez, Alejandra Correa-Betancourt, Silvia Binet, Francisco H. Sánchez, Guillermo A. Muñoz-Medina, Héctor M. Gutiérrez-Zapata, Luis R. Pizzio

The effect of the simultaneous presence of fluorine (0.15-1.2 mg L ), bicarbonates (83.6-596 mg L ), and synthesized goethite (0.3 mg L ) at typical concentrations often found in natural groundwater samples was evaluated on the degradation of 2,4-dic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8dfce82b285616ef5e306bf983e30c90
https://doi.org/10.22541/au.167845034.42324825/v1

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An integrated drinking water production system to remove chemical and microbiological pollution from natural groundwater by a coupled prototype helio-photochemical/H2O2/rapid sand filtration/chlorination powered by photovoltaic cell

Autor: Julián A. Rengifo-Herrera, Janeth Sanabria, John J. Alvear-Daza, Héctor M. Gutiérrez-Zapata

Publikováno v: Solar Energy. 176:581-588

This study evaluates the simultaneous removal of 2,4-dichlorophenoxyacetic acid acid-2,4-D at 70 μg L−1 and the viability decreasing of Escherichia coli and Klebsiella pneumoniae from real groundwater samples containing natural amounts of iron (0.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b75c050a165d3ac79ced162d9d723563
https://doi.org/10.1016/j.solener.2018.10.070

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Addition of Hydrogen Peroxide to Groundwater with Natural Iron Induces Water Disinfection by Photo-Fenton at Circumneutral pH and other Photochemical Events

Autor: Janeth Sanabria, Héctor M. Gutiérrez-Zapata, John J. Alvear-Daza, Julián A. Rengifo-Herrera

Publikováno v: Photochemistry and Photobiology. 93:1224-1231

Samples of natural groundwater (with low turbidity, neutral pH and 0.3 mg L−1 iron concentration) inoculated with Escherichia coli K-12, were exposed to simulated solar light both in the presence and absence 10 mg L−1 of H2O2. Results demonstrate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74f80fd897f4d1a1f17e1545497e3826
https://doi.org/10.1111/php.12779

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Addition of hydrogen peroxide enhances abiotic sunlight-induced processes to simultaneous emerging pollutants and bacteria abatement in simulated groundwater using CPC solar reactors

Autor: Héctor M. Gutiérrez-Zapata, Julián A. Rengifo-Herrera, Janeth Sanabria

Publikováno v: Solar Energy. 148:110-116

Results revealed that almost 90% of 2,4-D (70 μg L−1), present in simulated groundwater containing 0.3 mg L−1 of iron at pH 7.0, was degraded after 320 min (60 min t30w) of natural sunlight irradiation while the viability of Escherichia coli cel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9142a4bbf00a070d2c04008d1b1504c
https://doi.org/10.1016/j.solener.2017.03.068

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Photo-Fenton process at natural conditions of pH, iron, ions, and humic acids for degradation of diuron and amoxicillin

Autor: Julián A. Rengifo-Herrera, Jose L. Buitrago, Alejandra García-Barco, Frankly J. Urbano-Ceron, Héctor M. Gutiérrez-Zapata, Janeth Sanabria, Paula Osorio-Vargas

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

Effect of ferric ions at concentrations typically found in natural waters (0.05 to 1.06 mg L−1) and low H2O2 concentrations (between 0.5 and 17.9 mg L−1) on simulated sunlight-induced (300 W m−2) photo-Fenton degradation at initial neutral pH (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f50c70208730bbb126fc3a39c8c7e524
https://link.springer.com/article/10.1007/s11356-019-06700-y

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Resistance and induction of viable but non culturable states (VBNC) during inactivation of E. coli and Klebsiella pneumoniae by addition of H2O2 to natural well water under simulated solar irradiation

Autor: Julián A. Rengifo-Herrera, Alejandra García-Barco, Janeth Sanabria, Paula Osorio-Vargas, John J. Alvear-Daza, Héctor M. Gutiérrez-Zapata

Publikováno v: Water Research. 188:116499

Inactivation of E. coli and Klebsiella pneumoniae by addition of H2O2 10 mg L−1 into natural well water samples containing natural total iron concentrations (around 0.3 mg L−1) under simulated solar light was followed by bacterial culturability (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::93dccf5d518d1c1534c35f1fce23892f
https://doi.org/10.1016/j.watres.2020.116499

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2,4-D abatement from groundwater samples by photo-Fenton processes at circumneutral pH using naturally iron present. Effect of inorganic ions

Autor: Karen L. Rojas, Héctor M. Gutiérrez-Zapata, Julián A. Rengifo-Herrera, Janeth Sanabria

Publikováno v: Environmental Science and Pollution Research. 24:6213-6221

This study evaluated, at laboratory scale, if the using iron naturally present (0.3 mg L−1) and adding 10 mg L−1 of hydrogen peroxide was effective to remove 24.3 mgL−1 of 2,4-dichlorophenoxyacetic acid (2,4-D) from groundwater samples by simul

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fcfbe7e6df85ccce2a14dcc1c61bd19
https://doi.org/10.1007/s11356-016-7067-5

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Simultaneous abatement of organics (2,4-dichlorophenoxyacetic acid) and inactivation of resistant wild and laboratory bacteria strains by photo-induced processes in natural groundwater samples

Autor: John J. Alvear-Daza, Julián Andrés Rengifo Herrera, Janeth Sanabria, Héctor M. Gutiérrez-Zapata

Simultaneous abatement of 2,4-dichlorophenoxyacetic acid (2,4-D at 70 µg L−1), Escherichia coli and Klebsiella pneumoniae (laboratory and wild strains) cells from real groundwater samples containing natural iron concentrations (∼0.3 mg L−1) wa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dfa8104b7ca0815ca273c7e9aa958a12
https://www.sciencedirect.com/science/article/pii/S0038092X18306911

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