A5021032875- Recycling and utilization of industrial and municipal waste in materials production
- Concrete and Cement Materials Research
- Advanced ceramic materials synthesis
- Recycled Aggregate Concrete Performance
- Clay minerals and soil interactions
- Pigment Synthesis and Properties
- Innovations in Concrete and Construction Materials
- Nuclear materials and radiation effects
- Recycling and Waste Management Techniques
- Polymer Nanocomposites and Properties
- Electrospun Nanofibers in Biomedical Applications
- Microwave-Assisted Synthesis and Applications
- biodegradable polymer synthesis and properties
- Bauxite Residue and Utilization
- Advanced materials and composites
- Glass properties and applications
- Bone Tissue Engineering Materials
- Iron oxide chemistry and applications
- Chemistry Education and Research
- Microwave Dielectric Ceramics Synthesis
- Drilling and Well Engineering
- Tailings Management and Properties
- Extraction and Separation Processes
- Coal and Its By-products
- ZnO doping and properties
Universidade Federal de Campina Grande
2016-2025
Universidade Federal da Paraíba
1998
Porous N-carbon/silica nanofibers (PN-CSN) were successfully made by solution blow spinning (SBS), polymer solutions containing polyvinylpyrrolidone (PVP), tetraethyl orthosilicate (TEOS), and ethanol. The fibers samples carbonized at 550 °C in a static air atmosphere. PN-CSN characterized using scanning electron microscopy, N2 adsorption/desorption, X-ray diffraction, thermogravimetric analysis zeta potential. adsorption capacity was determined dye (methylene blue, MB). had small average...
Biomass carbon-rich ash is proposed as a sustainable alternative in the production of ceramic materials. This study investigated this waste product, combined with kaolin and alumina for membranes. The formulations were defined based on Al2O3-SiO2-MgO ternary diagram 51 wt% biomass ash, 36 kaolin, 13 alumina. shaping green body samples was conducted by using uniaxial pressing method at 40 MPa sintering temperatures ranging from 1050 to 1150 °C. Several properties, such morphology, porosity,...
Objective: This study aims to systematically and quantitatively analyze the outcomes of radiofrequency ablation (RFA) ultrasound-guided nerve blocks (USNB) in treatment postherpetic neuralgia (PHN), focusing on their efficacy, safety, impact pain relief quality life. Theoretical Framework: Postherpetic is a common debilitating complication herpes zoster infection, characterized by persistent neuropathic that significantly affects patients' daily activities mental well-being. Conventional...
This study characterized wastes from scheelite and columbite-tantalite mining, as well kaolin processing, to produce microfiltration membranes for wastewater treatment using a fast-sintered process. After characterization, the were mixed with clays, pressed, sintered at low temperatures of 1050 1100 °C. The resulting exhibited pore size distributions ranging 3 μm 180 flexural strengths exceeding 14 MPa. In crossflow filtration system, permeate fluxes ranged 177 L/h.m2 228 2 bar,...
Bioactive glasses (BGs) can potentially be applied in biomedicine, mainly for bone repair and replacement, given their unique ability to connect natural tissue stimulate regeneration. Since discovery, several glass compositions have been developed improve the properties clinical abilities of traditional bioactive glass. Different inorganic ions, such as strontium (Sr2+), incorporated BG due perform therapeutic functions. Sr2+ has gaining prominence its osteogenesis, providing an appropriate...
In this study, we develop ceramic formulations based on quartzite and scheelite tailings collected from mining companies in the northeast of Brazil (Rio Grande do Norte State). New samples (27 wt% kaolin, 29 plastic clay, 11 tailing, 0–8 tailing) were uniaxially pressed two steps (20 MPa 50 Mpa for 20 s); dried at 110 °C 24 h; sintered 1150 °C, 1200 1250 °C. The main mineralogical phases (mullite, quartz, calcite, anorthite) identified using X-ray diffraction (XRD). After evaluation...
New ceramic formulations based on scheelite tailing were developed, and their potential in the industry was evaluated. Green bodies with different contents of (0-8 wt%) sintered (1150 °C, 1200 1250 °C) characterized terms main mineralogical phases, microstructure, physico-mechanical properties. The mullite phase identified all temperatures. This result also ratified aid scanning electron microscope (SEM) images, which small needles detected. presence is required because it contributes to...
O Estado da Paraíba possui jazidas de bentonitas utilizadas comercialmente em uma vasta gama setores tecnológicos. No entanto, esses jazimentos estão se exaurindo após dezenas anos exploração. Assim, este trabalho tem por objetivo a caracterização físico-mineralógica recentemente descobertas no município Cubati, PB. As amostras estudadas foram secas 60 ºC e caracterizadas meio fluorescência raios X, picnometria He, determinação distribuição tamanho partículas, difração análise térmica...
Abstract Ceramics containing cordierite and mullite as their principal phases are promising for many applications, due to properties such a low coefficient of thermal expansion, high durability, dielectric constant, resistance shock, refractoriness. The objective this study was produce ceramic composites suitable use refractory materials. raw materials were subjected chemical characterization the formulations physical, chemical, mineralogical characterization. specimens formed by pressing,...
The kaolin processing industry generates large amounts of waste in producing countries such as Brazil. aim this study was to characterize and evaluate its suitability an alternative ceramic raw material for the production porous technical bodies. physically chemically characterized thermal behaviour is described. Several formulations were prepared sintered at different temperatures. samples determine their porosity, water absorption, firing shrinkage mechanical strength. Fired...