Search Results - "Lemos, Sherlan G."

Removal of Reactive Dyes from a Real Bichromatic Textile Effluent Employing Bio-Based Nanomagnetic Adsorbents by Bezerra, Kátia C. H., Nascimento, Jacqueline R., Martins, Tiago D., Lemos, Sherlan G., Carrilho, Elma N. V. M., de A. Rodrigues, Christiane, Labuto, Geórgia

“…Effluents containing reactive dyes are globally generated in significant quantities as result of dyeing process applied to cellulosic fibers, frequently…”
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Coconut coir as biosorbent for Cr(VI) removal from laboratory wastewater by Gonzalez, Mário H., Araújo, Geórgia C.L., Pelizaro, Claudia B., Menezes, Eveline A., Lemos, Sherlan G., de Sousa, Gilberto Batista, Nogueira, Ana Rita A.

“…A high cost-effective treatment of sulphochromic waste is proposed employing a raw coconut coir as biosorbent for Cr(VI) removal. The ideal pH and sorption…”
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Determination of melamine in milk by fluorescence spectroscopy and second-order calibration by Barreto, Matheus C., Braga, Raíssa G., Lemos, Sherlan G., Fragoso, Wallace D.

“…•EEM spectroscopy can be used with second-order methods to determine melamine in milk.•A single step environmentally friendly clean-up can be used.•Melamine…”
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A simple voltammetric electronic tongue for the analysis of coffee adulterations by de Morais, Tais Carpintero Barroso, Rodrigues, Dayvison Ribeiro, de Carvalho Polari Souto, Urijatan Teixeira, Lemos, Sherlan G.

“…•Simple and low-cost methods for the detection of coffee adulterations.•Coffee adulteration detected with LDA aided by variable selection on voltammetric…”
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Electronic tongue based on a single impedimetric sensor and complex numbers-supervised pattern recognition by Rodrigues, Dayvison R., Fragoso, Wallace D., Lemos, Sherlan G.

“…•Supervised pattern recognition performed with complex numbers.•Coffee adulteration successfully performed with PLS-DA and complex impedance spectra.•Detection…”
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Comparison of Different PLS Algorithms for Simultaneous Determination of Cd(II), Cu(II), Pb(II), and Zn(II) by Anodic Stripping Voltammetry at Bismuth Film Electrode by Pinto, Licarion, Lemos, Sherlan G.

“…In this work we evaluated the use of different variable selection techniques combined with partial least‐squares regression (PLS) – genetic algorithm PLS…”
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Simultaneous determination of benzenediol isomers in tap water by second-order calibration and voltabsorptometry by Oliveira, Levi G., Lemos, Sherlan G., Fragoso, Wallace D.

“…K4[Fe(CN)6] and benzenedial isomers: catechol, resorcinol and hydroquinone, were studied by voltoabsortometry, absorption spectroscopy versus potential sweep,…”
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Nickel sorption capacity of ground xylem of Quercus ilex trees and effects of selected ligands present in the xylem sap by Araújo, Geórgia C.L., Lemos, Sherlan G., Nabais, Cristina

“…In this work the influence of four different ligands present in the xylem sap of Quercus ilex (histidine, citric, oxalic and aspartic acids) on Ni(II)…”
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UV–Vis spectrophotometry coupled to chemometric analysis for the performance evaluation of atrazine photolysis and photocatalysis by Moreira, Ailton J., Lemos, Sherlan G., Coelho, Dyovani, Mascaro, Lucia H., Freschi, Gian P. G., Pereira, Ernesto C.

“…   In this study, a spectrophotometric-chemometric (Spec-Chem) approach was applied as an alternative to chromatography to monitor ATZ and by-products after…”
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Use of multivariate analysis on Fabry-Pérot interference spectra of nanoporous anodic alumina (NAA) for optical sensors purposes by Ferro, Letícia M.M., Lemos, Sherlan G., Ferreira, Marystela, Trivinho-Strixino, Francisco

“…[Display omitted] •NAA films for optical sensor aided by multivariate analysis.•Multivariate analysis was employed in the treatment of Fabry-Pérot interference…”
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Simultaneous determination of Cu, Pb, Cd, Ni, Co and Zn in bioethanol fuel by adsorptive stripping voltammetry and multivariate linear regression by Nascimento, Danielle S., Insausti, Matías, Band, Beatriz S.F., Lemos, Sherlan G.

“…•Simultaneous determination of six trace metals in bioethanol fuel samples.•Multivariate determination of six analytes with a voltammetric method.•MLR aided by…”
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Activated carbon production from industrial yeast residue to boost up circular bioeconomy by Modesto, Helen R., Lemos, Sherlan G., dos Santos, Mikaela S., Komatsu, Jenny S., Gonçalves, Maraísa, Carvalho, Wagner A., Carrilho, Elma N. V. M., Labuto, Geórgia

“…This work aims to obtain activated carbon (AC) from yeast residue to boost up bioeconomy. In this way, carbon was prepared from yeast biomass produced by the…”
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Ethanol fuel adulteration with methanol assessed by cyclic voltammetry and multivariate calibration by Abreu, Romário E.L., Paz, José E.M., Silva, Adenilton C., Pontes, Márcio J.C., Lemos, Sherlan G.

“…•Simple and fast assessment method of ethanol fuel adulteration.•Simultaneous multivariate electroanalytical determination of methanol and ethanol.•Variable…”
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Characterization of electrical discharges during spark anodization of zirconium in different electrolytes by Santos, Janaina S., Lemos, Sherlan G., Gonçalves, Wesley N., Bruno, Odemir M., Pereira, Ernesto C.

“…The evolution of the electrical discharges parameters during spark anodization of metallic Zr under galvanostatic regime have been investigated by image…”
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A method for Ca, Fe, Ga, Na, Si and Zn determination in alumina by inductively coupled plasma optical emission spectrometry after aluminum precipitation by Souza, Alexandre L., Lemos, Sherlan G., Oliveira, Pedro V.

“…In this present work a method for the determination of Ca, Fe, Ga, Na, Si and Zn in alumina (Al 2O 3) by inductively coupled plasma optical emission…”
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Multivariate linear regression with variable selection by a successive projections algorithm applied to the analysis of anodic stripping voltammetry data by Marreto, Paola D., Zimer, Alexsandro M., Faria, Ronaldo C., Mascaro, Lucia H., Pereira, Ernesto C., Fragoso, Wallace D., Lemos, Sherlan G.

“…•MLR aided by variable selection provided excellent quantitative predictions.•The electrochemical processes occurring in ASV can be outlined…”
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Voltammetric e-Tongue Based on a Single Sensor and Variable Selection for the Classification of Teas by Rodrigues, Dayvison R., de Oliveira, Diana S. M., Pontes, Marcio J. C., Lemos, Sherlan G.

“…This work presents a simple and low-cost strategy to obtain voltammetric tongues by using a single voltammetric sensor aided by variable selection techniques…”
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Systematic evaluation of the preparation of conducting PANI/ABS blends by Cristovan, Fernando H, Lemos, Sherlan G, Pereira, Ernesto C

“…Films of blended poly(acrylonitrile-butadiene-styrene) (ABS) and polyaniline (PANI) were produced by codissolving both components in a common organic solvent,…”
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Flow–batch miniaturization by Monte-Filho, Severino S., Lima, Marcelo B., Andrade, Stéfani I.E., Harding, David P., Fagundes, Yebá N.M., Santos, Sergio R.B., Lemos, Sherlan G., Araújo, Mario C.U.

“…This study introduces the first micro-flow–batch analyzer (μFBA). A simple, low-cost, deep urethane–acrylate photo-resist ultraviolet-lithographic technique…”
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Electrocatalysis of methanol, ethanol and formic acid using a Ru/Pt metallic bilayer by Lemos, Sherlan G., Oliveira, Robson T.S., Santos, Mauro C., Nascente, Pedro A.P., Bulhões, Luís O.S., Pereira, Ernesto C.

“…This work describes the methanol, ethanol and formic acid oxidation using a metallic bilayer electrodeposited on a platinum substrate. Firstly, one monolayer…”
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