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Itens para a visualização no momento 11-20 of 26
Alumina ativada modificada por ozonização: preparação, caracterização e aplicação na remoção de íons fluoreto presentes em água subterrânea
(Universidade Federal de Santa Maria, 2021-08-31)
Fluoride concentration in drinking water is an important parameter to be monitored. At concentrations between 0.6 and 1.5 mg L-¹, it promotes an improvement in population oral health, preventing tooth decay. However, the ...
Impregnação de cério em alumina ativada para a desfluoretação de águas
(Universidade Federal de Santa Maria, 2021-06-29)
Fluoride ion (F-
) is commonly found in groundwater used for water supply and presents health
risks when consumed in excess. Several treatments are studied for water defluoridation,
adsorption being one of the most used ...
Produção de nanofibras de poliacrilonitrila modificadas com Cyanex 272 na recuperação de gálio
(Universidade Federal de Santa Maria, 2020-03-06)
The objectives of this work were to develop polyacrylonitrile (PAN) nanofibers modified with the commercial Cyanex 272 extractor (bis-2,4,4-trimethylpentyl phosphinic acid) and apply them for the recovery of gallium present ...
Potencial de biossorventes de baixo custo na remoção dos corantes violeta cristal e fucsina básica em sistema contínuo e descontínuo de adsorção
(Universidade Federal de Santa Maria, 2020-08-28)
The potential of pecan pericarp (Carya illinoensis), Pacara Earpod tree seed residues
(Enterolobium contortisilquum), and ironwood seed residues (Caesalpinia leiostachya)
were evaluated for the removal of crystal violet ...
Íons fluoreto em águas subterrâneas: monitoramento e remoção por eletrocoagulação-flotação e adsorção com resíduos de tabaco
(Universidade Federal de Santa Maria, 2020-01-27)
The excess of fluoride ions (F-) is a problem in the quality of water supply because they can trigger
human health problems such as dental and skeletal fluorosis. Removal of F- to concentrations predicted
by potability ...
Utilização de resíduos aluminosilicatos como catalisadores foto-Fenton e adsorventes no tratamento de efluentes
(Universidade Federal de Santa Maria, 2023-01-31)
The management of Water Treatment Plant (WTP) sludge and coal fly ash waste is one of the
biggest problems faced by many sanitation and thermoelectric companies, with landfill being the
main destination of these materials. ...
Desenvolvimento e caracterização de um compósito HDL/biocarvão para adsorção de corante vermelho do Congo
(Universidade Federal de Santa Maria, 2022-08-29)
In this work the utilization of activated lychee peel biochar (ALPB) and Ca-Cr layered double
hydroxide for production of a composite was investigated. The CaCr/HDL-ALPB was
synthetized by coprecipitation and characterized ...
Avaliação das características de bio-óleo e biochar produzidos por pirólise a partir de biomassas lignocelulósicas
(Universidade Federal de Santa Maria, 2023-03-09)
Lignocellulosic biomass is considered one of the alternative renewable resources with the
potential to supply the high world energy demand, by reducing dependence on fossil fuels. The
use of this valuable resource as raw ...
Desenvolvimento de materiais carbonáceos a partir de subprodutos do processamento de butiá (Butia spp.) e aplicação como adsorventes de fenol e CO2
(Universidade Federal de Santa Maria, 2023-03-09)
Waste generation and environmental pollution contention are challenges to modern society.
Liquid effluents pollute water sources and gaseous can aggravate the greenhouse effect.
Adsorption highlights among the technologies ...
Adsorção de corante alaranjado de metila aplicando hidróxidos duplos lamelares de Ca/Fe suportado em biochar de serragem de eucalipto
(Universidade Federal de Santa Maria, 2023-02-28)
Contamination of water resources is a topic much discussed by society due to the serious
problems it entails for public health. Among several pollutants, dyes represent the largest
group of organic contaminants. In view ...