A5048453150- Adsorption and biosorption for pollutant removal
- Clay minerals and soil interactions
- Membrane Separation Technologies
- Pigment Synthesis and Properties
- Academic Research in Diverse Fields
- Geography and Environmental Studies
- Agricultural and Food Sciences
- Iron oxide chemistry and applications
- Science and Education Research
- Analytical Chemistry and Sensors
- Recycling and Waste Management Techniques
- Environmental Sustainability and Education
- Chemical Synthesis and Characterization
- Extraction and Separation Processes
- Phytochemistry Medicinal Plant Applications
- Phosphorus and nutrient management
- Layered Double Hydroxides Synthesis and Applications
- Dye analysis and toxicity
- Polymer Nanocomposites and Properties
- Catalysis and Hydrodesulfurization Studies
- Recycling and utilization of industrial and municipal waste in materials production
- Education Pedagogy and Practices
- Chemistry Education and Research
- Analytical Methods in Pharmaceuticals
- Marine and Offshore Engineering Studies
Universidade Federal de Campina Grande
2014-2021
AVM Faculdade Integrada
2021
Heavy industrial activities result in contamination of waste water with many heavy metals, including cadmium, nickel, lead, mercury. Within this context becomes a growing concern the population and environmental agencies regarding by metals from effluents. Because problem, paper aims to study evaluate main properties natural Brasgel clay order remove cadmium synthetic effluents, analyzing its kinetic adsorption isothermal balance. Once clays exhibit good cation exchange capacity, selectivity...
The clays are emerging as excellent alternative materials in the process of removing organic and inorganic contaminants, that due to it's physicochemical characteristics, it’s easy obtain also for low cost. initial objective this ( study was characterize clay Chocolate B by techniques X-ray diffraction (XRD) cation exchange capacity (CEC). In addition, testing finite bath under certain conditions (pH, concentration) order better evaluate efficiency removal heavy metals zinc lead. It used a...
The latest technologies require materials with combination of properties that are not usually found in conventional materials. Organic-inorganic hybrid emerge as alternatives to the synthesis low cost new functional constituent polymer-clay nanocomposites intended effectively for treatment oily effluents. removal effluents was evaluated using composite membranes different nanocomposite percentages, consisting a mineral clay BrasgelTM smaller than 2 μm and ultra high molecular weight...
In this work, natural and thermally modified Chocolate B clays were used for batch adsorption of Pb2+ Zn2+ from an aqueous solution. The materials characterized by X-ray diffraction, fluorescence spectroscopy, nitrogen adsorption, cation exchange capacity. tests performed in a finite bath following 22 factorial design, with the variables: pH initial concentrations metal. Results revealed that thermal treatment caused alterations on clay structure decreased specific surface area. Affinities...
This objective of this study was to produce organoclay, analyze it, and evaluate its use in the process removing oil emulsion from an oil–water system. The organoclay prepared by direct method characterized using X-ray diffraction, Cation Exchange Capacity (CEC), Infrared Spectroscopy (IV). A finite bath system used effects on removal capacity, a stirring speed (A) between 100 300 rpm initial concentration oil-water solution (C 0 ) evaluated range 500 mg/L. XRD infrared results indicated...
A pele, após sofrer uma lesão, inicia naturalmente o processo de cicatrização, que pode levar dias, a depender da extensão e quadro clínico do indivíduo. Visando promover efetiva regeneração tecidual, são utilizados curativos à base polímeros, com capacidade absorção proteção contra contaminações. Assim, presente trabalho propõe desenvolvimento compósitos partir polímero quitosana (QTS) argila bentonita (BEN), capazes incorporar óleo essencial Cymbopogon citratus (OECC) como alternativa aos...
O interesse em processos de separação por membranas ganham cada vez mais destaque aplicações industriais. As zeolíticas apresentam características únicas que as tornam atraentes para aplicação separação, a estabilidade mecânica, térmica e química superior alguns materiais, foco intensa pesquisa. Este trabalho teve como objetivo preparar inorgânicas do tipo gama-alumina zeolítica (MOR/gama-alumina). A membrana inorgânica foi sintetizada partir da decomposição sulfato alumínio, moagem,...
Environmental problems caused by the presence of toxic metals in effluents emitted various industries are contaminating surface water and subsoil this has generated much discussion.
In this work, the removal of zinc and lead (Zn 2+ Pb ) from aqueous solutions was investigated using a Brazilian bofe clay. The mineral clays were characterized through XRD analysis CEC. A finite bath system used to evaluate main effects pH values in range 3.0 5.0 Zn initial concentrations (from 10 50 mg/L) on process capacity. combinations CEC showed characteristics group smectite clays. Up 3.38 mg/g Lead capacity (99.97% efficiency) reached as high 98.47 % Zinc efficiency 3.93 assays. Thus...
As argilas apresentam viabilidade técnico-econômica decorrente dos seus potenciais de adsorção que, associados as suas disponibilidades, tornam adsorventes baixo custo. Por outro lado, na sua forma natural não possui afinidade com compostos orgânicos. Buscou-se desenvolver um material destinado a remoção orgânicos, (a gasolina efluentes petrolíferos), empregando Boa-Vista/PB. O organofílico foi preparado, visando uma efetiva troca catiônica nas regiões interlamelares. Para caracterização das...
A bentonita, composta predominantemente pelo argilomineral montmorilonita que lhe confere as propriedades físicas concentra a maior parte das reservas nacionais (62%) no Estado da Paraíba. transformação bentonita em argila organofílica consiste ser realizada através de reação troca dos cátions (Na+ ou Ca2+) presentes na superfície e espaço interlamelar argilominerais, por sais quaternários amônio. Neste trabalho foi preparada utilizando dois tipos diferentes amônio, tais como: cloreto alquil...
O objetivo inicial deste trabalho foi estudar os efeitos da concentração (Ci) e pH na remoção de íons chumbo pela argila chocolate B natural modificada termicamente a 500ºC em sistema banho finito. Foi adotado um planejamento fatorial 22 + 3 pontos centrais, totalizando sete ensaios, que avaliada resposta percentual (%Rem) sobre o Ci. A (natural modificada) caracterizada por meio das técnicas difração raios X (DRX), capacidade troca cátions (CTC) adsorção física nitrogênio. Observou-se dos...
Background: The generation of wastewater contaminated with organic compounds, release or spill into these water bodies can lead to serious environmental problems. removal chemical pollutants in presents itself as one the central issues regarding issue remediation. In this sense, membranes, haves gained increasing importance area. Objective: This present study aims develop a composite membrane using UHMWPE/LDPE/CTAC-HGC be used for oil/water separation effluents. Methods: polymeric and were...