Preparation and characterization of a Brazilian bentonite clay for removal of copper in porous beds

Autor:	Caroline Bertagnolli, Meuris Gurgel Carlos da Silva, Sirlei Jaiana Kleinübing
Rok vydání:	2011
Předmět:	Chemistry Analytical chemistry chemistry.chemical_element Geology Copper law.invention Adsorption Physisorption Geochemistry and Petrology law Gas pycnometer Bentonite Calcination Fourier transform infrared spectroscopy Porosity Nuclear chemistry
Zdroj:	Applied Clay Science. 53:73-79
ISSN:	0169-1317
DOI:	10.1016/j.clay.2011.05.002
Popis:	The objective of this work focused on preparing and characterizing bentonite clay through thermal treatment in order to be applied in a porous bed for copper adsorption. Tests to obtain adsorbent physical and chemical characteristics were performed on natural clay samples, samples calcined at 400 and 500 °C, and calcined submitted to copper adsorption. This clay was characterized according to the following techniques: X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), ethylene glycol monoethyl ether (EGME) method, N2 physisorption (BET), helium pycnometry, mercury porosity, scanning electron microscopy (SEM) and energy dispersive x-ray spectroscopy (EDX). A study was conducted to define the operation outflow, based on the minimum mass transfer zone (MTZ) obtained, useful (qU) and total (qT) adsorbed amounts, and total copper removal percentage (R (%)).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4cb12d86e5fb0d79ab16316f30f7d5fb https://doi.org/10.1016/j.clay.2011.05.002 Zobrazit plný text záznamu Full Text from ScienceDirect