Removal of heavy metal ions from aqueous medium using Kuluncak (Malatya) vermiculites and effect of precipitation on removal
Source abstract
Abstract
Abstract The removal of heavy metal ions, Cr3 +, Pb2 + and Zn2 +, by vermiculite was studied by batch adsorption tests. Influence of experimental parameters (e.g., medium pH and initial ion concentration) on removal was examined separately. Metal hydroxide formation in the dispersions and their precipitation was also investigated to assess the effect of precipitation on ion removal. For this purpose, some removal tests were carried out in the absence of vermiculite at various pH and initial ion concentrations. Electrokinetic and other properties (e.g., specific surface area, thermal and chemical analysis) of vermiculite were determined to explain the experimental results and the interaction mechanisms between solid surface and the ions. Zeta potential data were found to be a very useful means to explain the interaction mechanism between the adsorbent and adsorbate. The affinity of vermiculite for ions changed in the order of Pb > Cr > Zn. At the lowest studied pH of 2.5, 15.81, 10.71 and 9.18 mg of Pb, Cr and Zn ions could be removed by 1 g of the adsorbent, respectively.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrokinetic Soil Remediation Techniques · Electrochemical Analysis and Applications · Geophysical and Geoelectrical Methods
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (37)
Show source-provided references
1. Influence of pH, ionic strength and humic acid on adsorption of Cd(II) and Pb(II) onto vermiculite10.1016/j.colsurfa.2005.04.005 ↗
2. The influence of pH and adsorbent concentration on adsorption of lead and zinc on a natural goethite
3. Interaction of metal ions with montmorillonite and vermiculite10.1016/j.clay.2007.04.002 ↗
4. An identification study of vermiculites and micas adsorption of metal ions in aqueous solution10.1016/j.fuproc.2010.03.005 ↗
5. Effect of pH, flow rate and concentration on the sorption of Pb and Cd on montmorillonite: I. Experimental10.1002/(SICI)1097-4660(199912)74:12<1131::AID-JCTB158>3.0.CO;2-0 ↗
6. Removal of heavy metals from waste waters by vermiculites10.1080/09593330309385596 ↗
7. Low-cost adsorbents for heavy metals uptake from contaminated water: a review10.1016/S0304-3894(02)00263-7 ↗
8. Vermiculite as an exchanger for copper(II) and Cr(III) ions, kinetic studies10.1007/s11581-010-0456-8 ↗
9. Comparison of natural adsorbents for metal removal from acidic effluent10.1080/09593330309385552 ↗
10. Adsorption of heavy metal ions on soils and soils constituents10.1016/j.jcis.2004.04.005 ↗
11. Natural vermiculite as an exchanger support for heavy cations in aqueous solution10.1016/j.jcis.2004.11.031 ↗
12. Evaluating the removal of Cd(II), Pb(II) and Cu(II) from a wastewater sample of a coating industry by adsorption onto vermiculite10.1016/j.clay.2006.12.009 ↗
13. Electrokinetic properties of vermiculite and expanded vermiculite: effects of pH, clay concentration and mono and multivalent electrolytes10.1080/01496390802219109 ↗
14. Effect of ionic strength on the adsorption of copper and chromium ions by vermiculite pure clay mineral10.1016/j.jhazmat.2009.05.100 ↗
15. Fuerstenau · 2003 · 276
16. Formation of porous vermiculite structure in the course of swelling10.1023/A:1016165915362 ↗
17. Examination of zinc uptake in a combined system using sludge, minerals and ultrafiltration membranes10.1016/j.jhazmat.2010.05.101 ↗
18. Industrial wastewater pre-treatment for heavy metal reduction by employing a sorbent-assisted ultrafiltration system10.1016/j.chemosphere.2010.10.022 ↗
19. Kumral · 2007
20. Distribution of Pb(II) species in aqueous solutions10.1016/S0021-9797(03)00638-6 ↗
21. Fe2+-modified vermiculite for the removal of chromium(VI) from aqueous solution10.1080/01496395.2010.491493 ↗
22. Heavy metals removal from aqueous solutions using TiO2, MgO, and Al2O3 nanoparticles10.1080/00986445.2012.686939 ↗
23. Adsorption of heavy metals on vermiculite: influence of pH and organic ligands10.1016/j.jcis.2006.03.011 ↗
24. Surface acidity of smectites in relation to hydration, exchangeable cation, and structure10.1346/CCMN.1968.0160508 ↗
25. The influence of phyllosilicate mineralogy on the rheology of mineral slurries10.1016/j.mineng.2011.05.008 ↗
26. Characterization of colloidal chromia particles obtained by forced hydrolysis10.1016/S0025-5408(03)00137-5 ↗
27. Heavy metal removal from aqueous solutions by sorption using natural clays from Burkina Faso10.5897/AJB11.3735 ↗
28. Electromobility of mica particles dispersed in aqueous solutions10.1346/CCMN.1985.0330304 ↗
29. Adsorption mechanisms of Zn on hectorite as a function of time, pH, and ionic strength10.2475/ajs.301.9.798 ↗
30. Biosorption of metals onto biomass: exchange adsorption or surface precipitation?10.1016/S0301-7516(00)00047-8 ↗
31. Physicochemical characteristics for adsorption of MTBE and cadmium on clay minerals10.1007/s12665-009-0051-3 ↗
32. Adsorption of chromium ions in water on Kuluncak (Malatya) vermiculites
33. Stietiya · 2010
34. The use of XAFS to distinguish between inner- and outer-sphere lead adsorption complexes on montmorillonite10.1006/jcis.1999.6330 ↗
35. Use of low-cost biological wastes and vermiculite for removal of chromium from tannery effluent10.1016/j.biortech.2004.04.015 ↗
36. A multi-parameter titration method for the determination of formation pH for metal hydroxides10.1016/S0892-6875(01)00157-1 ↗
37. Adsorption of Co and Zn on montmorillonite in the presence of a cationic pesticide10.1180/claymin.1996.031.4.05 ↗