THAIS VITÓRIA DA SILVA REIS

THAIS VITÓRIA DA SILVA REIS

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Green synthesis and characterization of biosilica produced from sugarcane waste ash
2017 - HELENO, RODRIGO A.; REIS, THAIS V. da S.; ROVANI, SUZIMARA; FUNGARO, DENISE A.
In this study, ash fromsugarcane waste was used in the synthesis of biosilica using alkaline extraction followed by acid precipitation. Different parameters that could influence the silica particle synthesis were evaluated. The ash and synthesized biosilica were characterized by a combination of spectroscopic and chemical techniques such as XRD, XRF, SEM, particle size analyser, N2 adsorption analysis, TGA, and FTIR. The best condition for biosilica production was achieved with fusion method and aging temperature of 80∘C for 1 h during gel formation. X-ray powder diffraction pattern confirms the amorphous nature of synthesized silica.The purity of the prepared silica was 99% silica which was confirmed bymeans of XRF.Theexperimental data suggest that the sugarcane waste ash could be converted into a value-added product, minimizing the environmental impact of disposal problems.
Advances in production of value-added products from sugarcane straw ash
2015 - FUNGARO, DENISE A.; REIS, THAIS V. da S.; LOGLI, MARCO A.; OLIVEIRA, NARA A. de
This chapter describes how sugarcane straw ash (SCSA), an agricultural waste of sugar industry, was utilized for the production of value-added products. Samples of SCSA were used on synthesis of silica gel and zeolitic material by alkaline conventional hydrothermal treatment and fusion method. The effect of synthesis parameters was studied and the conditions optimized. The materials were characterized by XRD, XRF, SEM, FT-IR, Brunauer-Emmett-Teller (BET) surface area techniques, particle size analyzer, TG/DSC and nitrogen physisorption. The presence of zeolites NaP1 and hydroxysodalite confirms successful conversion of native SCSA into zeolitic material. Furthermore, silica gel was prepared by using SCSA as sodium silicate source. Zeolitic material from sugarcane straw ash was examined by removal of dye from aqueous solution. The use of the sugarcane straw ash for production of silica gel and zeolitic material, value-added products, appears as an alternative and environmental friendly use of this byproduct, once it is an agricultural residue, that doesn't have another important use.
Sintese de sílica gel obtida a partir das cinzas de resíduo de biomassa da cana-de-açúcar por diferentes processos
2015 - HELENO, R.A.; REIS, T.V.S.; FUNGARO, D.A.
Use of sugarcane straw ash for zeolite synthesis
2014 - FUNGARO, DENISE A.; REIS, THAIS V. da S.
Synthesis and characterization of zeolitic material derived from sugarcane straw Ash
2014 - FUNGARO, DENISE A.; REIS, THAIS V.S.; LOGLI, MARCO A.; OLIVEIRA, NARA A.
Caracterizacao termoquimica de palha de cana-de-acucar
2010 - REIS, THAIS V. da S.; FUNGARO, DENISE A.
Factorial design to optimize microwave-assisted synthesis of FDU-1 silica with a new triblock copolymer
2010 - CIDES da SILVA, L.C.; REIS, T.V.S. dos; COSENTINO, I.C.; FANTINI, M.C.A.; MATOS, J.R.; BRUNS, R.E.