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Citric acid as anti-hydration additive for magnesia containing refractory castables
(ELSEVIER SCI LTD, 2011)
Magnesia hydration is a key concern in refractory castable processing. The volumetric expansion that follows this reaction can result in cracks or even explosion during the first heating-up. Citric acid (CA) and other ...
EDTA assisted phytorremediation of a Pb contamined soil: metal leaching and uptake by jack beans
(São Paulo - Escola Superior de Agricultura "Luiz de Queiroz", 2009)
Lead (Pb) is one of the main soil contaminants. It is also of difficult phytoremediation due to its low solubility and high retention on soil particles. EDTA application to soil is a strategy to increase heavy metal ...
Characterization of eucalyptus grandis kraft pulps treated with phosphonates in different stages of TCF bleaching
(North Carolina State University. Department of Wood and Paper Science, 2011-05)
The addition of a phosphonated chelant (DTPMPA) at different points of a TCF bleaching sequence and its effect on pulp properties were studied in this work. An industrial Eucalyptus grandis kraft pulp was submitted to a ...
Comportamento térmico do 8-quinolinol e seus nitro-derivados
(Sociedade Brasileira de Química, 2001-10-01)
The compounds 5-nitro-8-quinolinol and 5,7-dinitro-8-quinolinol were obtained by nitration of the chelant 8-quinolinol. The compounds were characterized through EA, MNR, XRD, IR, TG, DTA and DSC. It was verified through ...
Comportamento térmico do 8-quinolinol e seus nitro-derivados
(Sociedade Brasileira de Química, 2001-10-01)
The compounds 5-nitro-8-quinolinol and 5,7-dinitro-8-quinolinol were obtained by nitration of the chelant 8-quinolinol. The compounds were characterized through EA, MNR, XRD, IR, TG, DTA and DSC. It was verified through ...
Thermal behaviour of hafnium diethylenetriaminepentaacetate studied using the Perturbed Angular Correlation Technique
(Oldenbourg Verlag, 2014-03)
Polyaminecarboxilic ligands like diethylenetriaminepentaacetic acid form stable complexes with many heavy metal ions, excelling as cation chelants especially in the field of radiopharmacy. The aim of this work is to ...
Estrategia experimental de aplicación de fosfonatos en el pulpado Kraft y Blanqueos TCF Y ECFExperimental strategy of application of fosfonatos in the kraft pulping anda Bleaches TCF and ECF
(Universidad Central de Las Villas, 2006-03)
En el presente trabajo se presenta una estrategia experimental de aplicación de quelantes en etapas de pulpado y blanqueos, totalmente libres de cloro (TCF) y libres de cloro elemental (ECF). Los resultados obtenidos ...
Comportamento térmico do 8-quinolinol e seus nitro-derivados
(Sociedade Brasileira de Química, 2014)