Determining kinetic constants and transport efficiencies at membrane interfaces to optimize the removal/recovery of Cu(II) through lulk liquid membranes containing benzoylacetone as carrier [PDF]
, 2017 The removal, separation, and enrichment of heavy metals in aqueous solutions has become a prime concern over the last few decades because of both their adverse effects on the ecosystem and living organisms and their valuable resource character.
Gómez Gómez, Elisa +4 more
core +2 more sources
Journal of Chemistry, 2014 This paper presents the results concerning the first use of activated composite membranes (ACMs) for the facilitated transport of silver ions containing di-(2-ethylhexyl)-dithiophosphoric acid (DTPA) as the carrier.
Yucundo Mendoza-Tolentino +4 more
doaj +1 more source
AVALIAÇÃO DA QUALIDADE DE PILHAS ALCALINAS E ZINCO-CARBONO DE DIFERENTES PROCEDÊNCIAS
Eclética Química, 2018 This work presents a study on the chemical composition of spent batteries manufactured in Brazil and Asian countries. The goal was to compare the quality of these products. Samples were disassembled prior to chemical characterization. The Asian batteries
Leonardo Henrique Coimbra Vieira +5 more
doaj +1 more source
Geogaceta, 2022 Las coladas de lava del volcán de Cofrentes transportan una variedad de xenolitos entre los que se encuentran granulitas máficas compuestas por plagioclasa, ortopiroxeno, clinopiroxeno y olivino. La petrografía y química mineral de estos enclaves apunta
María García-Rodríguez +2 more
doaj +1 more source
Mineral carbonation of ceramic brick at low pressure and room temperature. A simulation study for a superficial CO2 store using a common clay as sealing material [PDF]
, 2018 This research explores the possibilities of CO2 sequestration on ceramic bricks in a short time and at surface conditions. The experiment was carried out in a specially designed reaction chamber, filled with brick wastes and sealed with common clays. The
Aparicio Fernández, Patricia +2 more
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BENEFICIAMENTO E CARACTERIZAÇÃO DE QUARTZO PARA OBTENÇÃO DE SILÍCIO GRAU METALÚRGICO
Holos, 2012 Este trabalho descreve as etapas de caracterização e purificação de quartzo para obtenção de um silício grau metalúrgico (SiGM) com baixo nível de impurezas.
Livia Gonçalves Leida Soares +5 more
doaj +1 more source
Determination of Lipoxygenase Activity in Cereals Grains Using a Silver Nanoparticles Assay
Journal of Chemistry, 2015 A spectrophotometric method based on the use of silver nanoparticles is presented for the determination of lipoxygenase activity in cereal grains.
Raybel Muñoz +4 more
doaj +1 more source
SINTESE DA FASE SODALITA COM O USO DO CAULIM DA REGIÃO BORBOREMA-SERIDÓ (RN/PB) ATIVADO TERMICAMENTE
Holos, 2012 A fase mineral sodalita foi obtida com sucesso a partir de reações hidrotérmicas com o uso de caulim proveniente da região Borborema-Seridó (RN/PB), hidróxido e carbonato de sódio.
Cássia Guerra Marques Santos +6 more
doaj +1 more source
Electrochemical incineration of cresols: A comparative study between PbO2 and boron-doped diamond anodes [PDF]
, 2009 The electrooxidation of aqueous solutions containing 5 mM of o-, m- and p-cresol at pH 4.0 has been investigated using a flow filter-press reactor with a boron-doped diamond (BDD) under galvanostatic electrolysis. All cresols are degraded at similar rate
Arias, Conchita +4 more
core +1 more source
Desalination and Water TreatmentPeperomia scandens (Ps.), an aquatic plant from the Piperaceae family with over 1500 species, has not been previously studied for its ability to remove contaminants from wastewater. Notably, Ps.
A. Hernández-Sánchez +5 more
doaj +1 more source