Buscar
Mostrando ítems 21-30 de 1000
Enhanced photocatalytic activity of BiFeO3 for water remediation via the addition of Ni2+
(Pergamon-Elsevier Science Ltd, 2020-12)
In this study, the photocatalytic activity of bismuth ferrite (BiFeO3) that is modified with Ni2+ to obtain BiFe1-xNixO3 (0 ≤ x ≤ 0.4 mol) is reported. The powders were synthesized by assisted high-energy ball milling. The ...
Potential application of oil-suspended particulate matter aggregates (OSA) on the remediation of reflective beaches impacted by petroleum: a mesocosm simulation
(Brasil, 2015-08-28)
This paper presents the oil-suspended particulate matter aggregate (OSA) resulted from the interaction of droplets of dispersed oil in a water column and particulate matter. This structure reduces the adhesion of oil on ...
Magnetic nanotechnological devices as efficient tools to improve the quality of water: analysis on a real case
(Springer Heidelberg, 2018-08-02)
Magnetic nanoparticles (MNPs), based on iron oxide (magnetite) and ferrogel of gelatin and MNPs, were employed as efficient tools for the removal of heavy metals and nutrients from water samples from Bahia Blanca estuarine ...
Immobilization of nanoscale zerovalent iron in hierarchically channelled polyacrylonitrile for Cr(VI) remediation in wastewater
(Elsevier, 2021-02)
Nanoscale zerovalent iron (NZVI) was immobilized within porous millimeter-sized polyacrylonitrile (PAN) beads by chemical coagulation followed by a heat treatment in air for stabilization of the polymer structure. SEM-EDS ...
Remédios estruturais em casos de infração à ordem econômica: as limitações jurídicas e econômicas a serem observadas pelo CADE
(2019-07-18)
O presente trabalho irá abordar requisitos jurídicos e econômicos a serem observados pela autoridade antitruste na modelagem de remédio estrutural imposto como decorrência de uma infração à ordem econômica. Ponto de partida ...
Synthesis and physicochemical characterization of a novel adsorbent based on yttrium silicate: A potential material for removal of lead and cadmium from aqueous media
(2020-08-01)
A new metallosilicate based on yttrium was synthesized and characterized by XRD, FT-IR, 29Si MAS-NMR, and 89Y MAS-NMR. The mixed framework of the material was confirmed by the detection of distinct chemical shift groups ...