Preparation and characterization of a granular bentonite composite adsorbent and its application for Pb2+ adsorption
Source abstract
Abstract
Abstract Bentonite is an important clay for preparation of adsorbents for potential treatment of industrial effluents. However, due to its natural occurrence as fine particles and swelling after moisture absorption, bentonite is difficult to be separated from the liquid for regeneration purpose, which limits its application in effluent treatment. In this study, two different bentonite-polypropylene composites were synthesized, i.e., with and without pore-enlarging treatment. They both showed strong ability to resist hydraulic agitation damage with a small breakage rate in water. The obtained results from SEM and XRD characterization revealed that the compounding of bentonite with the polypropylene was a physical process, and the structural characteristics of bentonite particles were maintained in the new products. The granular composite adsorbents were effective in removing Pb2+ in aqueous solution. The suggested pore-enlarging treatment was verified as a successful operation to increase greatly the adsorption rate of contaminants on the granular bentonite composite.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Soil and Unsaturated Flow · Adsorption and biosorption for pollutant removal · Landfill Environmental Impact Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (26)
Show source-provided references
1. Mineralogy, chemistry and potential applications of a white bentonitein San Juan province, Argentina10.1016/j.clay.2003.10.003 ↗
2. Effect of OH−/Al3+ and Al3+/clay ratios on the adsorption properties of Al-pillared bentonites10.1016/j.colsurfa.2006.10.071 ↗
3. Adsorptive removal of tannin from aqueous solutions by cationic surfactant-modified bentonite clay10.1016/j.jcis.2006.01.056 ↗
4. Retention of lead from an aqueous solution by use of bentonite as adsorbent for reducing leaching from industrial effluents10.1016/j.desal.2006.03.569 ↗
5. Adsorption of poly(4-vinylpyridine) onto bentonites10.1016/S0167-577X(03)00524-X ↗
6. Adsorption behavior of Cr(VI) on activated hazelnut shell ash and activated bentonite10.1016/j.micromeso.2005.11.010 ↗
7. Organophilic bentonites as adsorbents for radionuclides I. Adsorption of ionic fission products10.1016/S0169-1317(99)00041-1 ↗
8. Gas evolution from heated bounded moulding sand10.1179/1743133612Y.0000000018 ↗
9. HEU-type zeolites modified by transition elements and lead10.1016/S1387-1811(03)00352-4 ↗
10. Preparation of oxide pellets with fibrosis bentonite and its mechanism
11. Surface chemistry and rheological properties of API bentonite drilling fluid: pH effect, yield stress, zeta potential and ageing behaviour10.1016/j.petrol.2016.07.016 ↗
12. Characterisation of northern Patagonian bentonites for pharmaceutical uses10.1016/j.clay.2005.11.002 ↗
13. The colloidal and rheological properties of bentonite suspensions10.1016/S0001-8686(99)00005-6 ↗
14. Thermal analysis evidence for the location of zwitterionic surfactant on clay minerals10.1016/j.clay.2015.04.021 ↗
15. Adsorption performance of Al-pillared bentonite clay for the removal of cobalt(II) from aqueous phase10.1016/j.clay.2005.08.008 ↗
16. Activated carbons with metal containing bentonite binders as adsorbents of hydrogen sulfide10.1016/j.carbon.2004.09.023 ↗
17. Composite gels of poly(acrylamide) with incorporated bentonite, interaction with cationic surfactants, ESR and SAXS study10.1021/ma012021z ↗
18. Removal of Fe(II) from the wastewater of a galvanized pipe manufacturing industry by adsorption onto bentonite clay10.1016/j.jenvman.2004.06.009 ↗
19. Removal of a cationic dye from aqueous solutions by adsorption onto bentonite clay10.1016/j.chemosphere.2005.10.033 ↗
20. Lead removal by polyacrylamide-bentonite and zeolite composites: effect of phytic acid immobilization10.1016/j.jhazmat.2005.06.036 ↗
21. Adsorption of phenol from wastewater by peat, fly ash and bentonite10.1016/S0304-3894(97)00062-9 ↗
22. Effect of adsorbent concentration to the adsorption of phenol on hexadecyl trimethyl ammonium-bentonite10.1016/j.jhazmat.2005.01.021 ↗
23. Chapter 5.1-clays and clay minerals for pollution control10.1016/B978-0-08-098259-5.00021-4 ↗
24. Simultaneous sorption of organic compounds and phosphate to inorganic-organic bentonites from water10.1016/j.seppur.2006.08.009 ↗
25. Co-sorption of CD and phosphate on thesurface of a synthetic hydroxy iron montmorillonite complex10.1346/CCMN.2014.0620201 ↗
26. Adsorbents based on montmorillonite for contaminant removal from water: a review10.1016/j.clay.2015.12.024 ↗