A5033919239- Arsenic contamination and mitigation
- Heavy metals in environment
- Mine drainage and remediation techniques
- Geography and Environmental Studies
- Extraction and Separation Processes
- Iron oxide chemistry and applications
- Radioactive element chemistry and processing
- Metal Extraction and Bioleaching
- Soil Management and Crop Yield
- Geochemistry and Elemental Analysis
- Growth and nutrition in plants
- Clay minerals and soil interactions
- Fish biology, ecology, and behavior
- Membrane Separation Technologies
- Mining and Resource Management
- Environmental Sustainability and Education
- Electrokinetic Soil Remediation Techniques
- Wastewater Treatment and Reuse
- Aquatic Ecosystems and Phytoplankton Dynamics
- Geochemistry and Geologic Mapping
- Soil and Land Suitability Analysis
- Urban Stormwater Management Solutions
- Analytical chemistry methods development
- Landfill Environmental Impact Studies
- Chromium effects and bioremediation
Universidade Federal de Viçosa
2018-2024
Instituto Federal de Goiás
2018-2024
Instituto Federal de Educação, Ciência e Tecnologia de Rondônia
2018-2019
The great geological and soil variation in the state of Minas Gerais, Brazil, indicates need for regional studies to understand geochemical background soils. Rio Doce Basin became a priority area determination after rupture tailings dam Fundão 2015. In this context, objectives study were propose Reference Values Soil Quality Basin, define variables that can predict metal(loid) concentrations soil, examine correlation between determined by X-ray fluorescence traditional method. One hundred...
This study aimed to evaluate the pH, phosphate, and nitrate in process of arsenic absorption by Eichhornia crassipes (water hyacinth), using surface response methodology, order optimize process. The plants were exposed a concentration 0.5 mg L−1 (NaAsO2) over period 10 days. results indicated optimal levels for E. at pH equal 7.5, absence minimum level 0.0887 mmol L−1. For tested concentration, was able accumulate 498.4 kg−1 As (dry base) its plant tissue reduce 83% initial present aqueous...
Coprecipitation of Fe and Al (hydr)oxides has been considered a low‐cost process to remove As from wastewater. Arsenate is the most stable form in aerobic environments such as surface water, soils, sediments can be removed water through methods based on this process. Iron/aluminum molar ratios 100:0, 80:20, 60:40 were used treat contaminated with at concentrations 50 500 mg L −1 . Aluminum, ferrous, ferric sulfates coprecipitate high pH. Maghemite, magnetite, lepidocrocite, goethite detected...
Abstract Four cyanobacterial strains isolated from arsenic (As) contaminated area in Minas Gerais, Brazil namely: Pseudanabaena spp. CCM-UFV063 and CCM-UFV065, Tolypothrix sp CCM-UFV067 , Desmonostoc sp. CCM-UFV070 were grown on BG-11 0 culture media respectively supplemented with di-sodium hydrogen arsenate heptahydrate (As 5+ ) at concentrations of 0, 1, 10, 100, 1000 5000 mg L −1 . The growth was measured by means optical density daily for seven (7) days. Contents chlorophyll a...
Este artigo visa apresentar a Análise de Composição Gravimétrica realizada no Lixão Céu Aberto Águas Lindas, com o intuito caracterizar os resíduos na microrregião, identificar materiais perigosos e definir estratégias gestão resíduos. Utilizando pesquisa quantitativa técnica quarteamento, as etapas envolveram coleta, descarte, homogeneização, divisão, remoção, pesagem, triagem cálculo porcentagens materiais. Os resultados revelaram seguinte composição: diversos (42,8%), contaminantes...
Acid mine drainage (AMD) is an environmental concern due to the risk of element mobilization, including toxic elements, and inclusion in food chain. In this study, three cover layers were tested minimize As, Fe S mobilization from a substrate former gold mining, containing pyrite arsenopyrite. For purpose, different (capillary break, sealant layer) above induction geochemical barrier (GB) used provide suitable conditions for adsorption co-precipitation mobilized As. Thirteen treatments...
This work was conducted at a large gold mine in Paracatu, MG, Brazil, between March 2000 and November 2005. The waste rock studied phyllite which contained (in addition to gold) sulfides such as pyrite arsenopyrite. objective evaluate the survival growth of plant species on different combinations substrate layers deposited over spoil. Each combination tested consisted cover-layer final sealing-layer, both remaining, slightly-weathered spoils. treatments were follows: (T1) cover layer with 50...
A filtração é um processo barato e eficiente para tratamento de água, no qual os filtros construídos em escala piloto podem servir base o aperfeiçoamento da eficiência requerida sistema real. Destaca-se que a aplicação procedimentos tratamento, na piloto, são relevantes uma vez estabelecer detalhadamente tecnológico operacional, visando agregar conhecimentos obtidos dentre processos tecnologias disponíveis, podendo estas serem ou não convencionais. Assim, este trabalho objetivou fabricar...
Para uma maior e melhor produção de peixes se deve levar em consideração o monitoramento da qualidade água um sistema piscicultura, garantindo assim boa produtividade do pescado. Neste sentido, observando a importância piscicultura para estado Rondônia, presente trabalho teve como objetivo realizar análise físico-química três diferentes sistemas criação situados na linha 610, zona rural cidade Jaru-RO, sendo amostrados pontos com total 56 tanques analisados. Os parâmetros analisados foram...