Organoclay-based nanoparticles from montmorillonite and natural clay deposits: Synthesis, characteristics, and application for MTBE removal
Source abstract
Abstract
Abstract This study introduces organoclay-based submicron- and nanosized particles prepared from montmorillonite (SWy2) and naturally occurring clay deposits using sequential steps of wet ball milling, ultrasonication and sedimentation followed by an ion exchange process using two surfactants, long alkyl chain HDTMA + (hexadecyltrimethylammonium bromide) and short alkyl chain TMA + (tetramethylammonium bromide). The resultant organoclay-based nanoparticles were characterized using X-ray diffraction (XRD), thermogravimetric-differential thermal analysis (TG-DTA) and Fourier-transform infrared (FTIR) spectroscopy. The adsorption of MTBE (methyl tert-butyl ether) by organo-montmorillonite with different surfactant loadings (0.5–2.0 CEC) in aqueous solution was also investigated. The results of XRD analysis for organoclay-based nanoparticles showed that the value of d (001) increased with increasing alkyl chain length and surfactant loading. FTIR results showed that the functional groups of the organoclays changed due to the intercalation of the long alkyl chain surfactant HDTMA + between clay layers. The removal of MTBE is highly dependent upon surfactant type and loading. The results indicated that the organo-montmorillonite-based nanoparticles prepared from HDTMA + have a higher affinity for MTBE in aqueous solution than the organo-montmorillonite prepared from TMA +. Therefore, long alkyl chain HDTMA + can be considered to be the most suitable organo-modifier for enhancing the adsorption characteristics of montmorillonite for MTBE removal.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Polymer Nanocomposites and Properties · Conducting polymers and applications · Clay minerals and soil interactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (46)
Show source-provided references
1. BTEX and MTBE adsorption onto raw and thermally modified diatomite10.1016/j.jhazmat.2010.01.053 ↗
2. Removal of BTEX, MTBE and TAME from aqueous solutions by adsorption onto raw and thermally treated lignite10.1016/j.jhazmat.2011.04.084 ↗
3. Removal of MTBE and other organic contaminants from water by sorption to high silica zeolites10.1021/es990390t ↗
4. A comparative study of the use of organoclay-based formulations and organic amendment to reduce the leaching of the herbicide MCPA in soil
5. Sorption and cosorption of 1,2,4-trichlorobenzene and tannic acid by organo-clays10.1016/S0043-1354(98)00148-1 ↗
6. Environmental Protection Agency (EPA) · 2004
7. Insights into the modeling of adsorption isotherm systems10.1016/j.cej.2009.09.013 ↗
8. Influence of synthesis method in preparation of HDTMA+- and HDPy+-illites/smectites10.1016/j.clay.2015.06.044 ↗
9. Changes in the morphology of organoclays with HDTMA+ surfactant loading10.1016/j.clay.2005.10.011 ↗
10. Organoclays prepared from montmorillonites with different cation exchange capacity and surfactant configuration10.1016/j.clay.2009.11.024 ↗
11. Synthesis of organoclays: a critical review and some unresolved issues10.1016/j.clay.2014.02.008 ↗
12. Regression analysis for the sorption isotherms of basic dyes on sugarcane dust10.1016/j.biortech.2004.10.021 ↗
13. Adsorption of MTBE from contaminated water by carbonaceous resins and mordenite zeolite10.1016/j.jhazmat.2005.11.050 ↗
14. Preparation of highly porous silica nanocomposites from clay mineral: a new approach using pillaring method combined with selective10.1016/j.micromeso.2004.10.033 ↗
15. Soil chemical analysis
16. Clay mineral type and organic compound sorption by hexadecyltrimethylammonium-exchanged clays10.2136/sssaj1991.03615995005500010007x ↗
17. Adsorption of methyl tert-butyl ether (MTBE) from aqueous solution by porous polymeric adsorbents10.1016/j.jhazmat.2008.03.052 ↗
18. Adsorption of dodecyl- and octadecyltrimethylammonium ions on a smectite and synthetic micas10.1016/S0169-1317(01)00059-X ↗
19. Adsorption of o-, m- and p-nitrophenols onto organically modified bentonites10.1016/j.jhazmat.2010.10.050 ↗
20. Removal of anionic metals by amino-organoclay for water treatment10.1016/j.jhazmat.2011.03.093 ↗
21. Concentration-dependent conformation of alkyl tail in the nanoconfined space: hexadecylamine in the silicate galleries10.1021/la026481c ↗
22. MTBE adsorption on all-silica beta zeolite10.1021/es0264044 ↗
23. Adsorption of phenthoate and acetochlor from water by clays and organoclays
24. Thermal and colloidal behavior of amine-treated clays: the role of amphiphilic organic cation concentration10.1016/j.jcis.2007.06.023 ↗
25. Multi-component adsorption of benzene, toluene, ethylbenzene, and xylene from aqueous solutions by montmorillonite modified with tetradecyl trimethyl ammonium bromide10.1155/2013/589354 ↗
26. Designed nanostructures of clay for controlled adsorption of organic compounds10.1166/jnn.2014.8597 ↗
27. The effect of layer charge and exchangeable cations on sorption of biphenyl. on montmorillonites
28. Polymer/layered silicate nanocomposites: a review from preparation to processing10.1016/j.progpolymsci.2003.08.002 ↗
29. Analysis, occurrence and fate of MTBE in the aquatic environment over the past decade10.1016/j.trac.2006.06.011 ↗
30. BTEX sorption by montmorillonite organo-clays: TMPA, ADAM, HDTMA10.1023/A:1005167524630 ↗
31. The swelling of HDTMA smectites as influenced by their preparation and layer charges10.1016/j.clay.2003.07.007 ↗
32. Adsorption of benzene, toluene, ethylbenzene and p-xylene by NaOCl-oxidized carbon nanotubes10.1016/j.colsurfa.2009.10.025 ↗
33. Cation exchange capacity and exchange coefficients
34. Structural characteristics of organo-modified bentonites of different origin10.1007/s10973-006-7886-6 ↗
35. BTEX removal from aqueous solutions by HDTMA – modified Y zeolite10.1016/j.jenvman.2012.07.026 ↗
36. The intercalation of a vermiculite by cationic surfactants and its subsequent swelling with organic solvents10.1006/jcis.2002.8673 ↗
37. Organoclays for aquifer bioremediation: adsorption of chlorobenzene on organoclays and its degradation by Rhodococcus B52810.1007/s11267-005-9025-y ↗
38. Structure of organoclays an X-ray diffraction and thermogravimetric analysis study10.1016/j.jcis.2004.04.053 ↗
39. Thermal characterization of organically modified montmorillonite10.1016/S0040-6031(00)00690-0 ↗
40. Adsorption-desorption behavior of naphthalene onto CDMBA modified bentonite: contribution of the π-π interaction10.1016/j.clay.2014.03.001 ↗
41. Intercalation of polyfluorinated surfactants into clay minerals and the characterization of the organoclay compounds10.1021/la011297x ↗
42. Removal of methyl tertiary-butyl ether (MTBE) from water by polymer–zeolite composites10.1016/j.micromeso.2011.10.033 ↗
43. Arrangement models of alkylammonium cations in the interlayer of HDTMA+ pillared montmorillonites10.1007/BF03183232 ↗
44. Influence of clay charge densities and surfactant loading amount on the microstructure of CTMA-montmorillonite hybrids10.1016/j.colsurfa.2007.04.019 ↗
45. Montmorillonite as a multifunctional adsorbent can simultaneously remove crystal violet, cetyltrimethylammonium, and 2-naphthol from water10.1016/j.clay.2013.12.010 ↗
46. Organo-clays as sorbents of hydrophobic organic contaminants: sorptive characteristics and approaches to enhancing sorption capacity10.1346/CCMN.2015.0630304 ↗