Organoclays from acid-base activated vermiculites for oil-water mixture separations
Source abstract
Abstract
Oily wastewater discharge causes severe environmental pollution and resource waste, requiring the development of low-cost adsorbents with good hydrophobicity. This study presents the preparation and use of a novel highly hydrophobic adsorbent based on natural vermiculite clay minerals to separate free/emulsified oil-water mixtures. Vermiculite was first activated with sulfuric acid and potassium hydroxide to increase its adsorption capacity and surface area. The sample was then modified with cetyltrimethylammonium bromide (CTAB) to change the wetting properties from hydrophilic to hydrophobic and increase oil adsorption. XRD, XRF, FESEM, BET, FTIR, and zeta potential analyses were carried out to determine changes in texture, morphology, and chemical composition of vermiculite affected by acid, base and acid-base activation. According to the results, the acid-base activation process was selected for vermiculite treatment before CTAB modification, which demonstrated a high oil adsorption selectivity (1910.6 %) compared to raw vermiculite (44.14 %). Effect of CTAB concentration on vermiculite`s wetting properties was studied. The results confirmed that the acid-base activated sample modified at 0.9 mmol.L −1 near the critical micelle concentration of CTAB exhibited highly hydrophobic properties (water contact angle of 148° ± 1°). For oil-in-water emulsions, the treated adsorbent demonstrated a high oil removal efficiency of 96 ± 2 %. Additionally, a packed layer of highly hydrophobic vermiculite was applied for free heavy/light oil-water mixture and water-in-oil emulsion separation. The performance test for separation of free oil-water mixture and water-in-oil emulsion showed high separation efficiency (all above 90 %). The reusability of highly hydrophobic vermiculite as well as the effect of oil type, the thickness of the adsorbent layer, and the height of the water phase on separation performance were also investigated.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Clay minerals and soil interactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (78)
Show source-provided references
1. Improved removal of methyl orange dye by adsorption using modified clay: combined experimental study using surface response methodology10.1016/j.inoche.2023.111127 ↗
2. Synthesis of super hydrophobic clay by solution intercalation method from aqueous dispersions10.12693/APhysPolA.127.1156 ↗
3. Low cost adsorbents for the removal of organic pollutants from wastewater10.1016/j.jenvman.2012.08.028 ↗
4. Modulation of the acidity of a vermiculite and its potential use as a catalytic support10.1007/s10853-020-04445-5 ↗
5. Emerging usage of electrocoagulation technology for oil removal from wastewater: a review10.1016/j.scitotenv.2016.11.062 ↗
6. Use of cellulose-based wastes for adsorption of dyes from aqueous solutions10.1016/S0304-3894(02)00017-1 ↗
7. Immobilisation of cellulase on vermiculite and the effects on enzymatic kinetics and thermodynamics10.1016/j.clay.2020.105792 ↗
8. Baker · 2023
9. Advanced oil sorbents using sequential infiltration synthesis10.1039/C6TA09014A ↗
10. Chapter 2 structures and mineralogy of clay minerals10.1016/S1572-4352(05)01002-0 ↗
11. Oil-in-water emulsion breaking marine bacteria for demulsifying oily wastewater10.1016/j.watres.2018.11.023 ↗
12. Acid leaching vermiculite: a multi-functional solid catalyst with a strongly electrostatic field and brönsted acid for depolymerization of cellulose
13. Adsorption of as(V) on surfactant-modified natural zeolites10.1016/j.jhazmat.2008.05.024 ↗
14. Adsorption of chlorinated volatile organic compounds on hydrophobic faujasite: correlation between the thermodynamic and kinetic properties and the prediction of air cleaning10.1016/S1387-1811(98)00202-9 ↗
15. Adsorption of crude oil on anhydrous and hydrophobized vermiculite10.1016/S0021-9797(02)00160-1 ↗
16. Development of novel composite adsorbents based on biopolymers/vermiculite using the ionic imprinting technique for cerium biosorption10.1016/j.jece.2022.108730 ↗
17. Experimental design investigation for vermiculite modification: Intercalation reaction and application for dye removal10.1016/j.clay.2016.02.031 ↗
18. Facile and rapid separation of oil from emulsions by hydrophobic and lipophilic Fe3O4/sawdust composites10.1016/j.cherd.2017.10.025 ↗
19. A review of bio-based materials for oil spill treatment10.1016/j.watres.2018.02.034 ↗
20. Organically modified clay for adsorption of petroleum hydrocarbon
21. Preparation of nano-porous carbon-silica composites and its adsorption capacity to volatile organic compounds10.3390/pr8030372 ↗
22. Use of a bacterial cellulose filter for the removal of oil from wastewater10.1016/j.procbio.2019.12.020 ↗
23. Summary of recommendations of nomenclature committees relevant to clay mineralogy: Report of the Association Internacionale pour l’Etude des Argiles (AIPEA) nomenclature committee for 200610.1346/CCMN.2006.0540610 ↗
24. The investigation of electrokinetic behaviour of micro-particles produced by CTA+ ions and Na-montmorillonite10.1016/j.apsusc.2014.01.036 ↗
25. Development of underwater superoleophobic polyamide-imide (PAI) microfiltration membranes for oil/water emulsion separation10.1016/j.seppur.2019.116451 ↗
26. Flexible and robust polyimide membranes with adjustable surface structure and hierarchical pore distribution for oil/water emulsion and heavy oil separation10.1016/j.memsci.2021.119769 ↗
27. Removal of emulsified oil from oily wastewater using agricultural waste barley straw10.1016/j.bej.2009.11.013 ↗
28. Thermodynamic and Spectroscopic Investigation of Interactions between Reactive Red 223 and Reactive Orange 122 Anionic Dyes and Cetyltrimethyl ammonium Bromide (CTAB) Cationic Surfactant in Aqueous solution10.1155/2014/540975 ↗
29. State of the art of produced water treatment10.1016/j.chemosphere.2017.10.139 ↗
30. Efficient oil/water separation using grass-like nano-cobalt oxide bioinspired dual-structured coated mesh filters10.1016/j.surfin.2022.101825 ↗
31. Advances in alkali-activation of clay minerals10.1016/j.cemconres.2020.106050 ↗
32. Organoclays from alkaline-treated acid-activated clays: Properties and thermal stability10.1007/s10973-013-3454-z ↗
33. Cesium removal using acid- and base-activated biotite and illite10.1016/j.jhazmat.2020.123319 ↗
34. Superhydrophobic coating on quartz sand filter media for oily wastewater filtration10.1016/j.colsurfa.2018.06.007 ↗
35. Preparation of superhydrophobic-oleophilic quartz sand filter and its application in oil-water separation10.1016/j.apsusc.2018.04.030 ↗
36. X-ray diffraction studies of the thermal behaviour of commercial vermiculites10.1016/j.clay.2008.03.004 ↗
37. Modified vermiculite as adsorbent of hexavalent chromium in aqueous solution
38. Hydrothermally treated vermiculites: Ability to support products for CO2 adsorption and geological implications10.1016/j.clay.2022.106791 ↗
39. Differences in coating mechanism of structurally different aluminosilicates observed through the thermal analysis10.1007/s10973-018-7351-3 ↗
40. Effect of native reservoir state and oilfield operations on clay mineral surface chemistry10.3390/molecules27051739 ↗
41. Assessment of swelling inhibitive effect of CTAB adsorption on montmorillonite in aqueous phase10.1016/j.clay.2016.04.014 ↗
42. Treatment of oily waters using vermiculite10.1016/j.watres.2005.04.034 ↗
43. Photocatalytic membrane filtration and its advantages over conventional approaches in the treatment of oily wastewater: a review10.1002/apj.2533 ↗
44. Highly hydrophobic polydimethylsiloxane-coated expanded vermiculite sorbents for selective oil removal from water10.3390/nano11020367 ↗
45. Synthesis and application of modified commercial sponges for oil-water separation10.1016/j.cej.2019.05.013 ↗
46. Oil and grease removal from wastewaters: Sorption treatment as an alternative to state-of-the-art technologies. A critical review10.1016/j.cej.2016.03.121 ↗
47. Acid-base treatment of lightweight expanded clay aggregate (LECA) for removal of paraquat from aqueous media10.1016/j.jece.2023.110405 ↗
48. Simultaneous adsorption of methylene blue cationic dye and paraquat herbicide on activated lightweight expanded clay aggregate (LECA) as a sustainable and recyclable adsorbent10.1016/j.clay.2024.107432 ↗
49. Optimization of separation of oil from oil-in-water emulsion by demulsification using different demulsifiers10.1080/10916466.2016.1181654 ↗
50. Vibrational spectroscopy of acid treated vermiculites10.1016/j.vibspec.2013.11.007 ↗
51. Reduction of organic pollutants in Olive Mill Wastewater by using different mineral substrates as adsorbents10.1016/j.biortech.2007.03.022 ↗
52. Interactions between CTAB and montmorillonite by atomic force microscopy and molecular dynamics simulation10.1016/j.colsurfa.2022.130656 ↗
53. Hexamine (HMT) assisted wet chemically synthesized CuO nanostructures with controlled morphology and adjustable optical behavior10.1007/s11082-016-0618-7 ↗
54. Application of vermiculite-derived sustainable adsorbents for removal of venlafaxine10.1007/s11356-018-1869-6 ↗
55. Acid-base treated vermiculite as high performance adsorbent: Insights into the mechanism of cationic dyes adsorption, regeneration, recyclability and stability studies10.1016/j.chemosphere.2017.01.039 ↗
56. Simultaneous removal of dyes and metal cations using an acid, acid-base and base modified vermiculite as a sustainable and recyclable adsorbent10.1016/j.scitotenv.2016.10.120 ↗
57. Treatment of cutting fluid waste using activated carbon fiber supported nanometer iron as a heterogeneous fenton catalyst10.1038/s41598-018-29014-4 ↗
58. Sun · 2024
59. Hydration states and phase transitions in vermiculite intercalation compounds10.1103/PhysRevB.36.2844 ↗
60. Vermiculite absorption capacity increasing by acid activation. Orient
61. Multifunctional carboxylated cellulose nanofibers/exfoliated bentonite/Ti3C2 aerogel for efficient oil adsorption and recovery: the dual effect of exfoliated bentonite and MXene10.1016/j.cej.2023.145412 ↗
62. Characterization and bleaching properties of acid-leached montmorillonite10.1002/jctb.1469 ↗
63. Vermiculite: Structural properties and examples of the use
64. Adsorption properties of Congo Red from aqueous solution onto surfactant-modified montmorillonite10.1016/j.jhazmat.2008.02.104 ↗
65. Alkali activation of halloysite for adsorption and release of ofloxacin10.1016/j.apsusc.2013.09.057 ↗
66. Study of adsorptive materials obtained by wet fine milling and acid activation of vermiculite10.1016/j.clay.2018.01.002 ↗
67. Adsorption isotherms, kinetics, and desorption of 1,2-dichloroethane on chromium-based metal organic framework MIL-10110.1080/01496395.2012.738756 ↗
68. FTIR investigation of CTAB–Al–montmorillonite complexes10.1016/j.saa.2006.09.024 ↗
69. A review on membrane technology and chemical surface modification for the oily wastewater treatment10.3390/ma13020493 ↗
70. Janus sand filter with excellent demulsification ability in separation of surfactant-stabilized oil/water emulsions: An experimental and molecular dynamics simulation study10.1016/j.jhazmat.2021.126346 ↗
71. A durable Ni3S2 coated mesh with reversible transition between superhydrophobicity and underwater superoleophobicity for efficient oil-water separation10.1016/j.jece.2022.107890 ↗
72. Increasing the hydrophobicity of filter medium particles for oily water treatment using coupling agents10.1016/j.heliyon.2018.e00809 ↗
73. Effect of surfactant types and their concentration on the structural characteristics of nanoclay10.1016/j.saa.2013.11.076 ↗
74. Surface wettability of basal surfaces of clay minerals: insights from molecular dynamics simulation10.1021/acs.energyfuels.5b02142 ↗
75. Porous nanofibrous superhydrophobic membrane with embedded au nanoparticles for the integration of oil/water separation and catalytic degradation10.1016/j.memsci.2019.04.024 ↗
76. Preparation of super-hydrophobic/super-oleophilic quartz sand filter for the application in oil-water separation10.1016/j.jwpe.2022.102561 ↗
77. Adsorption behavior of chloroform, carbon disulfide, and acetone on coconut shell-derived carbon: experimental investigation, simulation, and model study10.1007/s11356-018-3103-y ↗
78. Preparation of highly hydrophobic sepiolite for efficient oil removal10.1016/j.micromeso.2022.111952 ↗