Conference proceedings

Displaying 1 - 10 of 36 in Advanced oxidation processes (remove filter), CEST2021 (remove filter)

CEST Proceedings are published under the ISSN 2944-9820.

Caffeine oxidation by sono-Fenton treatment

Lomas J., (Corresponding) Villota N., Ferreiro C., Camarero L., Lombraña J.

Topic:

Advanced oxidation processes

Oxidation of waters containing caffeine was conducted by a sono-Fenton treatment employing an ultrasound power of 720 W at pH=3.0 and T=25°C. The catalytic action of ferrous ion was studied in a range of [Fe]=0-100.0 mg/L and oxidant concentrations between [H2O2]=0-250.0 mM. The oxidation of...Read more

Keywords:

aromaticity, caffeine, color, turbidity, sono-Fenton

DOI:

https://doi.org/10.30955/gnc2021.00015

Conference:

CEST2021

Paper ID:

cest2021_00015

Oxidation of carbamazepine by photo-Fenton treatment

Lomas J., (Corresponding) Villota N., Ferreiro C., Lombraña J.

Topic:

Advanced oxidation processes

Oxidation of waters containing 50.0 mg L-1 of carbamazepine was conducted by a photo-Fenton reagent employing a UV lamp of 150W, at pH=3.0 and T=40°C. The oxidising action of hydrogen peroxide was studied in a range between [H2O2]0=0-15.0 mM. When applying stoichiometric ratios of 2 mol C15H12N2O:...Read more

Keywords:

acridone, carbamazepine, colour, oxo-carbazepine, photo-Fenton

DOI:

https://doi.org/10.30955/gnc2021.00017

Conference:

CEST2021

Paper ID:

cest2021_00017

Mitigation of Microcystis sp. with metallic peroxide granules: matrix effect on hydrogen peroxide release kinetics and toxicity study on invertebrates

Keliri E., Christofi M., Efstathiou N., (Corresponding) Antoniou M.

Topic:

Advanced oxidation processes

An array of mitigation strategies has been applied over the years for toxic blue-green algae with the most recent one to be hydrogen peroxide (H2O2). Hydrogen peroxide has been widely used as an alternative to copper algaecides, and it is perceived as a more environmentally friendly option for...Read more

Keywords:

cyanobacteria, hydrogen peroxide, metallic granules, mitigation, surface water

DOI:

https://doi.org/10.30955/gnc2021.00037

Conference:

CEST2021

Paper ID:

cest2021_00037

Catalytic Enhancement of Ozone-Based Processes for Removal of Selected Antibiotics from Wastewaters

(Corresponding) Žgajnar Gotvajn A., Derco J., Antončič T., Vrabel M.

Topic:

Advanced oxidation processes

The aim of our work was to use advanced oxidation processes based on formation of reactive hydroxyl radicals (OH·) due to ozonation and its combination with H2O2, Fe2+ as catalyst and UV light for removal of Amoxicillin and Levofloxacin from model wastewaters at different pHs. Removal efficiencies...Read more

Keywords:

antibiotics, biotreatability, kinetics, ozonation

DOI:

https://doi.org/10.30955/gnc2021.00057

Conference:

CEST2021

Paper ID:

cest2021_00057

Investigation of variables affecting UV-LED photocatalytic degradation of antibiotics ciprofloxacin and sulfamethoxazole

(Corresponding) Bertagna Silva D., Buttiglieri G., Babić S.

Topic:

Advanced oxidation processes

In this study, photolytic and photocatalytic degradation of two antibiotics in ultra-pure water were analyzed. A lab-scale cylindrical reactor had its inner walls impregnated with TiO2 nanofilm for the photocatalytic experiments. In the first step, an optimized photoreactor design was chosen based...Read more

Keywords:

Ciprofloxacin; Light-emitting diodes; Photocatalysis; Photoreactor design; Sulfamethoxazole; Ultra-violet

DOI:

https://doi.org/10.30955/gnc2021.00065

Conference:

CEST2021

Paper ID:

cest2021_00065

New pillared clays for the removal of pollutants from wastewater by treatment with oxidation processes

(Corresponding) Kalmakhanova M., Massalimova B., Diaz de Tuesta J., Gomes H.

Topic:

Advanced oxidation processes

The constant development of technological processes aggravates the problem of pollution, due to a significant change in the composition of effluents that makes necessary the development of new (and/or improvement of the existing) treatment methods and catalytic materials. In this sense, the use of...Read more

Keywords:

Wastewater treatment, pillared clays, oxidation, catalyst, organic pollutants

Conference:

CEST2021

Paper ID:

cest2021_00072

Performance of metal-free carbonaceous catalysts in the removal of paracetamol by catalytic wet peroxide oxidation

(Corresponding) Santos Silva A., Henrique A., Steldinger H., Diaz de Tuesta J., Gläsel J., Correia Silva J., Etzold B., Gomes H.

Topic:

Advanced oxidation processes

The performance of metal-free carbonaceous catalysts was evaluated in the removal of paracetamol, chosen as model pharmaceutical micropollutant, by catalytic wet peroxide oxidation (CWPO). The carbon materials were prepared from pentaerythritol tetraacrylate and divinylbenzene copolymer with bis(2-...Read more

Keywords:

CWPO, metal-free catalysts, functionalization, paracetamol

DOI:

https://doi.org/10.30955/gnc2021.00107

Conference:

CEST2021

Paper ID:

cest2021_00107

Valorisation of polyolefins into magnetic carbon nanotubes: application as catalysts in wet peroxide oxidation of paracetamol

Sanches L., (Corresponding) dos Santos Silva A., Fontana Roman F., Diaz de Tuesta Triviño J., Alves da Silva F., Gomes H.

Topic:

Advanced oxidation processes

This work deals with the application of magnetic carbon nanotubes (MCNTs) in the catalytic wet peroxide oxidation (CWPO) of paracetamol (PCM), a pharmaceutical compound selected as model contaminant of emerging concern (CEC). MCNTs were synthetized by catalytic chemical vapor deposition (CCVD) at...Read more

Keywords:

Contaminants of emerging concern, carbon nanotubes, micropollutants, advanced oxidation process, plastic waste

DOI:

https://doi.org/10.30955/gnc2021.00108

Conference:

CEST2021

Paper ID:

cest2021_00108

Carbon nanotubes synthesized from LDPE for application in wet peroxide oxidation of paracetamol

(Corresponding) Roman F., Marim Lopes J., Diaz de Tuesta J., Lenzi G., Tavares da Silva A., Faria J., Gomes H.

Topic:

Advanced oxidation processes

Carbon nanotubes (CNTs) were produced by chemical vapor deposition (CVD) considering low-density polyethylene (LDPE) as a carbon source and as an alternative to upcycle plastic solid waste. The CNTs were synthesized over bimetallic catalysts (Ni and Fe) supported on Al2O3 and purified with H2SO4 to...Read more

Keywords:

Catalytic wet peroxide oxidation, paracetamol, plastic solid waste, carbon nanotubes.

DOI:

https://doi.org/10.30955/gnc2021.00113

Conference:

CEST2021

Paper ID:

cest2021_00113

Selective denitrification of lipophilic pollutants from oily wastewater by peroxidation using Janus-structured amphiphilic carbon nanotubes as catalysts

Sanches F., Roman F., Silva A., Diaz de Tuesta J., Marin P., Machado B., Serp P., Silva A., (Corresponding) Gomes H.

Topic:

Advanced oxidation processes

Carbon nanotubes (CNTs) were tested as catalysts in the selective denitrification of 4-nitrophenol (4-NP) from oily wastewater by catalytic wet peroxide oxidation (CWPO). The CNTs were prepared by chemical vapor deposition, feeding sequentially ethylene (E) and/or acetonitrile (A) during different...Read more

Keywords:

Catalytic wet peroxide oxidation, 4-nitrophenol, Carbon nanotubes, Janus-structure, Pickering emulsion.

DOI:

https://doi.org/10.30955/gnc2021.00125

Conference:

CEST2021

Paper ID:

cest2021_00125