G. E. do Nascimento
Federal University of Pernambuco
4 Papers
4 Citations
G. E. do Nascimento is an academic researcher from Federal University of Pernambuco. The author has contributed to research in topics: Molecular sieve & Adsorption. The author has an hindex of 1, co-authored 4 publications.
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Papers
Degradation of a Sunset Yellow and Tartrazine Dye Mixture: Optimization Using Statistical Design and Empirical Mathematical Modeling
G. E. do Nascimento,V. O. M. Cavalcanti,Rayany Magali da Rocha Santana,Deivson C. S. Sales,Joan Manuel Rodríguez-Díaz,Daniella Carla Napoleão,Marta Maria Menezes Bezerra Duarte +6 more
TL;DR: In this article, the photo-peroxidation and photo-Fenton processes using UV-C and sunlight radiations were evaluated in order to degrade two synthetic dyes commonly found in food industry wastewater, sunset yellow and tartrazine, in an aqueous mixture.
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Treatment of the drugs atenolol and propranolol by advanced oxidation processes, a kinetic approach, toxicity effects on seeds, and chromatographic analysis
V. de O. M. Cavalcanti,Rayany Magali da Rocha Santana,N. S. da C. S. Neves,A. L. A. de Lucena,M. A. S. de Oliveira,G. E. do Nascimento,Daniella Carla Napoleão +6 more
TL;DR: In this paper, the authors studied the efficiency of different AOPs for treating an aqueous mixture composed of the drugs atenolol and propranolol and observed that the photoperoxidation and photo-Fenton processes were the most efficient for the proposed drugs.
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Cerium incorporated into a mesoporous molecular sieve (mcm-41)
Abstract: - The synthesis and characterization of a mesoporous molecular sieve (MCM-41) was studied due to its high surface area and large pore volume and to target potential applications in adsorption and catalysis. Ra-re earth elements have special chemical properties and are efficient promoters for supports. In this study, a mesoporous molecular sieve that incorporates the transition metal cerium (Ce-MCM-41) was synthesized us-ing the hydrothermal method with the goal of improving the structural properties for adsorption. The molar composition of the obtained gel was 1CTMABr: 4SiO 2 : 1Na 2 O: 0.2Ce 2 O 3 : 200H 2 O. The pure mesoporous molecular sieve MCM-41 was also synthesized using the same method. The materials were characterized by the following techniques: XRD, BET/BJH, SEM/EDS, TG and FT-IR. A preliminary test to evaluate the mate-rials as adsorbents to remove naphthenic acids present in jet fuel was performed. The results of the characteri-zation showed that the incorporation of the metal cerium did not affect the MCM-41 structure and that mesporous materials were formed. Ce-MCM-41 exhibited good thermal stability, high specific surface area and large pore volume, which are characteristics of a good adsorbent. From the preliminary test, the adsorp-tive capacity increased by 60% with the incorporation of cerium in the MCM-41 structure.