Preparation and characterization of a Brazilian bentonite clay for removal of copper in porous beds
Source abstract
Abstract
Abstract 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 (%)).
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Clay minerals and soil interactions · Adsorption and biosorption for pollutant removal · Iron oxide chemistry and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. Adsorption of heavy metals on Na-motmorilonite. Effect of pH and organic substances10.1016/S0043-1354(02)00524-9 ↗
2. Palygorskite as a feasible amendment to stabilize heavy metal polluted soils10.1016/S0269-7491(03)00121-0 ↗
3. Characterization of bentonitic clays and their use as adsorbent10.1016/j.desal.2005.04.046 ↗
4. Synthesis and characterization of Na-montmorillonite–alkylammonium intercalation compounds10.1016/S0025-5408(00)00368-8 ↗
5. Kaolinite, montmorillonite, and their modified derivatives as adsorbents for removal of Cu(II) from aqueous solution10.1016/j.seppur.2005.12.014 ↗
6. Adsorption of a few heavy metals on natural and modified kaolinite and montmorillonite: a review10.1016/j.cis.2007.12.008 ↗
7. Enhanced pesticide adsorption by thermally modified bentonites10.1016/S0169-1317(01)00027-8 ↗
8. Brindley · 1980
9. Adsorption of gases in multimolecular layers10.1021/ja01269a023 ↗
10. Properties of subsoils in relation to various measures of surface area and moisture contents10.1111/j.1365-2389.1991.tb00423.x ↗
11. A simplified ethyiene glycol monoethyl ether procedure for assessment of soil surface area10.2136/sssaj1979.03615995004300040045x ↗
12. Removal of Mn(II) and Cd(II) from wastewaters by natural and modified clays10.1007/s10450-006-0375-1 ↗
13. Total surface of clays in polar liquids as a characteristic index10.1097/00010694-195006000-00014 ↗
14. Selectivity sequence and competitive adsorption of heavy metals by Brazilian soils10.2136/sssaj2001.6541115x ↗
15. The ethylene glycol monoethyl ether technique for determining soil surface area10.1097/00010694-196512000-00006 ↗
16. Physical Chemistry Division Commission on Colloid and Surface Chemistry including Catalysis. Reporting physisorption data for Gas/Solid Systems with Special Reference to the determination of Surface Area and Porosity10.1351/pac198557040603 ↗
17. Removal of Cu(II), Zn(II) and Co(II) ions from aqueous solutions by adsorption onto natural bentonite10.1007/s10450-007-9003-y ↗
18. An FTIR investigation of hexadecyltrimethylammonium intercalation into rectorite10.1016/j.saa.2008.05.015 ↗
19. Desorption response and degradation of buffering capability of bentonite, subjected to heavy metal contaminants10.1016/j.enggeo.2005.09.031 ↗
20. Order-disorder phenomena accompanying the dehydration of dioctahedral phyllosilicates10.1346/CCMN.1980.0280510 ↗
21. Heavy metals sorption/desorption on competing clay minerals; an experimental study10.1016/0169-1317(94)00030-T ↗
22. Santos · 1992
23. Removal of copper from aqueous solutions by bentonites and the factors affecting it
24. Copper sorption mechanisms on smectites10.1346/CCMN.2004.0520307 ↗
25. Adsorption of copper and zinc from aqueous solutions by using natural clay10.1016/j.jhazmat.2007.04.109 ↗
26. Sorption kinetics and equilibrium for the removal of nickel ions from aqueous phase on calcined Bofe bentonite clay10.1016/j.jhazmat.2009.12.040 ↗
27. Infrared study of water sorption on Na-, Li-, Ca-, and Mg-exchanged (SWy-1 and SAz-1) montmorillonite10.1346/CCMN.2000.0480115 ↗
28. Comparison of methods for measuring the surface area of soils. Technical note10.1061/(ASCE)1090-0241(2006)132:7(931) ↗
29. Influence of four different types of organophilic clay on the morphology and thermal properties of polystyrene/clay nanocomposites prepared by using the X-ray irradiation technique10.1016/j.eurpolymj.2003.08.006 ↗