Buscar
Itens para a visualização no momento 1-10 of 15
Pirólise de resíduos cervejeiros para a produção de adsorventes
(Universidade Federal de Santa Maria, 2020-02-13)
Contamination of water by organic compounds can cause damage to the environment and to humans. Adsorption is a promising process for removing these pollutants. In addition, the adsorbents used can be regenerated. Agricultural ...
Adsorção de níquel (II) usando leito fixo de carvão ativado em condições subcríticas
(Universidade Federal de Santa Maria, 2020-02-27)
In the present work, the use of subcritical conditions in the nickel adsorption process on activated carbon in a fixed bed was investigated in the aqueous medium, with variation of the values for different pressure (from ...
Potencial de hidróxidos duplos lamelares de Zn-Al e Mg-Fe para adsorção de 2-nitrofenol
(Universidade Federal de Santa Maria, 2020-02-28)
Two Zn-Al and Mg-Fe layered double hydroxides (LDH) were synthesized by coprecipitation method in order to increase the adsorption potential of 2-nitrophenol (2-NP). Both adsorbents were characterized by the techniques of ...
Síntese e caracterização de hidróxidos duplos lamelares para adsorção de o-nitrofenol de soluções aquosas
(Universidade Federal de Santa Maria, 2020-10-08)
In this work, layered double hydroxides (LDHs) based on calcium-aluminium (Ca-Al), nickel-aluminium (Ni-Al) and zinco-aluminium (Zn-Al) were evaluated at adsorptive removal of o-nitrophenol from aqueous solutions. The ...
Avaliação da adsorção de indio (III) através de redes neuronais artificiais e modelos difusivos de transferência de massa
(Universidade Federal de Santa Maria, 2021-06-11)
Technological development has increased the consumption of indium in the last decade and is currently classified as a critical material due to its scarcity. Its main application is related to the production of liquid crystal ...
Desenvolvimento de materiais a base de quitina para aplicação na adsorção de corantes
(Universidade Federal de Santa Maria, 2021-02-24)
The environmental problems due to the accelerated industrialization of the last decades have caused in society the need to develop new technologies for the treatment of industrial waste. The textile industry stands out due ...
Adsorção de herbicidas utilizando biochar obtido a partir de resíduos de madeira
(Universidade Federal de Santa Maria, 2022-02-26)
Residues of sawdust of the forest species Cedrela fissilis were modified, with a part of the
sample being only physically modified (BCC), while the other was also chemically activated
with zinc chloride (ZnCl2) as an ...
Síntese de compósito de carbono a partir de resíduo de vitivinicultura para adsorção de contaminantes emergentes
(Universidade Federal de Santa Maria, 2022-02-25)
This work proposed the synthesis of a carbon composite (CC) chemically activated with ZnCl2. This CC was obtained from the pyrolysis of composted viticulture residue. The material was characterized by FT-IR (Fourier transform ...
Modificação de nanotubos de carbono por impregnação de nanopartículas metálicas via síntese verde para adsorção de glifosato
(Universidade Federal de Santa Maria, 2021-09-27)
In the present work, commercial multiwalled carbon nanotubes (MWCNTs) were modified
via green synthesis for impregnation of metallic nanoparticles (MPNs), evaluating the
influence of plant extracts (pomegranate leaves, ...
Alumina ativada hidroxilada aplicada na remoção de íons fluoreto da água – um estudo através da metodologia de planejamento experimental
(2022-08-08)
Fluoride concentration is an important parameter that must be monitored in drinking water sincewater fluoridation, within the recommended doses, is an essential tool to prevent dental cavitiesin the population. Although, ...