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Silvia Alvarez   Dr.  Other 
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Silvia Alvarez published an article in March 2019.
Top co-authors See all
Juan García

4 shared publications

Catalysis and Separation Processes Group, Chemical Engineering and Materials Department, Faculty of Chemistry, Complutense University, Avda. Complutense s/n, 28040 Madrid, Spain

Gabriel Ovejero

3 shared publications

Catalysis and Separation Processes Group, Chemical Engineering and Materials Department, Faculty of Chemistry, Complutense University, Avda. Complutense s/n, 28040 Madrid, Spain

José Antonio Delgado

1 shared publications

Catalysis and Separation Processes Group, Chemical Engineering and Materials Department, Faculty of Chemistry, Complutense University, Avda. Complutense s/n, 28040 Madrid, Spain

Marcos Larriba

1 shared publications

Catalysis and Separation Processes Group, Chemical Engineering and Materials Department, Faculty of Chemistry, Complutense University, Avda. Complutense s/n, 28040 Madrid, Spain

V. Ismael Águeda

1 shared publications

Catalysis and Separation Processes Group, Chemical Engineering and Materials Department, Faculty of Chemistry, Complutense University, Avda. Complutense s/n, 28040 Madrid, Spain

9
Publications
32
Reads
0
Downloads
40
Citations
Publication Record
Distribution of Articles published per year 
(2015 - 2019)
Total number of journals
published in
 
7
 
Publications See all
Article 0 Reads 0 Citations Optimization Parameters, Kinetics and Mechanism of Naproxen Removal by Catalytic Wet Peroxide Oxidation with a Hybrid Ir... Ysabel Huaccallo-Aguilar, Silvia Álvarez-Torrellas, Marcos L... Published: 20 March 2019
Catalysts, doi: 10.3390/catal9030287
DOI See at publisher website ABS Show/hide abstract
This work presents a study of the assessment of the operating parameters of the catalytic wet peroxide oxidation (CWPO) of naproxen (NAP) using magnetite/multi-walled carbon nanotubes (Fe3O4/MWCNTs) as a catalyst. The effect of pH, temperature, and H2O2 dosage on CWPO process was evaluated by using the response surface model (RSM), allowing us to obtain an optimum NAP removal of 82% at the following operating conditions: pH = 5, T = 70 °C, [H2O2]0 = 1.5 mM, and [NAP]0 = 10.0 mg/L. Therefore, NAP degradation kinetics were revealed to follow a pseudo-second-order kinetic model, and an activation energy value of 4.75 kJ/mol was determined. Adsorption and using only H2O2 experiments, both considered as blank tests, showed no significant removal of the pollutant. Moreover, Fe3O4/MWCNTs material exhibited good recyclability along three consecutive cycles, finding an average NAP removal percentage close to 80% in each cycle of 3 h reaction time. In addition, the scavenging tests confirmed that the degradation of NAP was mainly governed by •OH radicals attack. Two reaction sequences were proposed for the degradation mechanism according to the detected byproducts. Finally, the versatility of the catalyst was evidenced in the treatment of different environmentally relevant aqueous matrices (wastewater treatment plant effluent (WWTP), surface water (SW), and a hospital wastewater (HW)) spiked with NAP, obtaining total organic carbon (TOC) removal efficiencies after 8 h in the following order: NAP-SW > NAP-HW > NAP-WWTP.
Article 5 Reads 7 Citations Enhancement of p-nitrophenol adsorption capacity through N 2 -thermal-based treatment of activated carbons S. Álvarez-Torrellas, Maria Martin Martinez, H.T. Gomes, G. ... Published: 01 August 2017
Applied Surface Science, doi: 10.1016/j.apsusc.2017.04.054
DOI See at publisher website
Article 8 Reads 4 Citations Effective adsorption of non-biodegradable pharmaceuticals from hospital wastewater with different carbon materials S. Álvarez-Torrellas, J.A. Peres, V. Gil-Álvarez, G. Ovejero... Published: 01 July 2017
Chemical Engineering Journal, doi: 10.1016/j.cej.2017.03.077
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Article 2 Reads 4 Citations Synthesis of high surface area carbon adsorbents prepared from pine sawdust- Onopordum acanthium L. for nonsteroidal ant... S. Álvarez-Torrellas, M. Muñoz, J.A. Zazo, J.A. Casas, J. Ga... Published: 01 December 2016
Journal of Environmental Management, doi: 10.1016/j.jenvman.2016.08.077
DOI See at publisher website PubMed View at PubMed
Article 3 Reads 0 Citations Influence of the natural organic matter in the removal of caffeine from water by fixed-bed column adsorption S. Álvarez-Torrellas, J. L. Sotelo, A. Rodríguez, G. Ovejero... Published: 28 November 2016
International Journal of Environmental Science and Technology, doi: 10.1007/s13762-016-1189-7
DOI See at publisher website
Article 5 Reads 13 Citations Removal of antibiotic compounds by adsorption using glycerol-based carbon materials S. Álvarez-Torrellas, R.S. Ribeiro, H.T. Gomes, G. Ovejero, ... Published: 01 July 2016
Chemical Engineering Journal, doi: 10.1016/j.cej.2016.03.112
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