A5032948875- Adsorption and biosorption for pollutant removal
- Dye analysis and toxicity
- Nanocomposite Films for Food Packaging
- Nanomaterials for catalytic reactions
- Heavy metals in environment
- Conducting polymers and applications
- Coal and Its By-products
- Microplastics and Plastic Pollution
- Mercury impact and mitigation studies
- Phosphorus and nutrient management
- Air Quality and Health Impacts
- Fluoride Effects and Removal
- Aquaculture Nutrition and Growth
- Academic Research in Diverse Fields
- Crustacean biology and ecology
- Dyeing and Modifying Textile Fibers
- Solar-Powered Water Purification Methods
- Clay minerals and soil interactions
- Business and Management Studies
- Enzyme-mediated dye degradation
- Polysaccharides and Plant Cell Walls
- Linguistics and Language Studies
- Mine drainage and remediation techniques
- Membrane Separation and Gas Transport
- Polydiacetylene-based materials and applications
University of the Coast
2021-2025
Universidade Federal de Santa Maria
2020-2021
Universidade Federal do Rio Grande
2009-2021
Ação Educativa
2020
Associação Saúde da Família
2020
Ordem dos Médicos
2019
Universidade do Estado do Pará
2015
Fundação de Apoio a Pesquisa do Estado de Goiás
2015
This work compared activated carbon, earth, diatomaceous chitin and chitosan to removal acid blue 9, food yellow 3 FD&C no 5 dyes from aqueous solutions with different pH values (2-10). In the best process condition for each dye, equilibrium studies were carried out at temperatures (from 298 328 K) Langmuir, Freundlich, Redlich-Peterson, Temkin Dubinin-Radushkevich models fitted experimental data. addition, entropy change, Gibbs free energy change enthalpy obtained in order verify...
This work developed one promising adsorbent based on chitosan hydrogel scaffold modified with carbon nanotubes, for food dye removal in single and binary aqueous systems. The was characterized relation to the gel strength, swelling degree, surface attributes, infrared spectrum. Adsorption isotherms were performed using dyes, red 17 (FdR17) blue 1 (FdB1), experimental data adjusted Langmuir model thermodynamic parameters estimated. kinetic behavior evaluated and, desorption studies verify...
Anthocyanin pigments are suitable as natural dyes for food, cosmetics and dietary supplements, due to the demand healthier products their antioxidant properties. This work aimed extract anthocyanin from red cabbage its separation of solution by adsorption operation onto chitosan films. The was extracted in water hot at 90 °C 15 min. Chitosan obtained shrimp waste, films were produced casting technique (tensile strength 25.1 ± 1.9 MPa, elongation 10.5 3.5% thicknesses 103.1 1.3 μm). assays...
The increasing disposal of emerging contaminants in the environment is a worldwide concern due to environmental impacts, such as toxicity, hormonal disorders, and bioaccumulation. persistence these pollutants water bodies makes conventional pollutant removal techniques inefficient or partial, thus requiring development new, more effective, sustainable remediation technologies. Therefore, chitosan-based materials have emerged promising alternative for application catalysis contaminant...
The biosorption of phenol onto bionanoparticles from Spirulina sp. LEB 18 was studied. Firstly, the were prepared strain and characterized. After, response surface methodology employed to optimize process as a function pH (3.2-8.8) dosage (0.15-1.85 g L(-1)). Finally, equilibrium thermodynamic studies performed at different temperatures (298-328 K). presented hydrodynamic diameter 232±3 nm polydispersity index 0.150. It found that more adequate condition for 6.0 1.85 L(-1). Langmuir model...
Abstract The removal of dye contaminants from water is an important issue and different adsorbents have been developed for this purpose. Here, chitosan hydrogel, scaffold‐chitosan hydrogel with activated carbon were used in the adsorption food blue 2 red 17, single binary aqueous systems. presented good mechanical properties, high efficiency, capacity, fast kinetics Chitosan excellent reusability capacity can be reused five cycles. use these hydrogels enables application adsorbent materials...
This study presents a sustainable solution for the removal of emerging contaminant chloroquine from aqueous solutions, utilizing biochar synthesized cassava waste through rapid, single-step microwave activation process. By repurposing waste, prevalent agricultural by-product, this method aligns with circular economy principles, promoting reuse materials. Characterization demonstrated highly porous, crystalline structure optimized adsorption applications. Adsorption studies optimal...
Chitosan with different deacetylation degrees was applied for the adsorption of food dyes (Acid Blue 9 and Food Yellow 3) in a binary aqueous system. The effects degree (DD) pH on were evaluated by response surface methodology (RSM). In more adequate condition, equilibrium curves obtained under temperatures, extended Langmuir model fitted to experimental data. RSM results showed that best conditions onto chitosan DD 95% 2.5. Under these conditions, capacities 163.6 193.4 mg/g Acid 3,...