Single and simultaneous adsorption of methyl orange and p-chlorophenol on organo-vermiculites modified by an asymmetric gemini surfactant

Ji, Yaxiong; Zhong, Hong; Chen, Ping; Xu, Xu; Wang, Yuanhao; Wang, Hai; Liu, Guangyan

doi:10.1016/j.colsurfa.2019.123740

Cited by 7 publications

(3 citation statements)

References 57 publications

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“…Robati et al [31] used graphene oxide as an adsorbent for MO dye adsorption, and the amount adsorbed was equal to 16.83 mg/g, in a contact time of 100 min at pH = 3. Ji et al [32] evaluated the methyl orange adsorption in organo-vermiculites modified by an asymmetric Gemini surfactant and concluded that the higher amount of modifier implies greater availability of surfactant. In this case, the higher MO dye adsorption measured was equal to 132.03 mg/g.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Anionic Dye on the Acid-Functionalized Bentonite

et al. 2020

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The efficiency of acid treatment on natural calcium bentonite (natural bentonite) for anionic dye adsorption was investigated using methyl orange (MO) as a probe. Additionally, adsorption experiments were accomplished between the natural bentonite, acidified bentonite, and a cationic dye (methylene blue, MB). Acid functionalization in natural bentonite (RF) was carried out with HCl and H2SO4 acids (RF1 and RF2, respectively). The samples were characterized by chemical analysis, mineralogy, particle size, and thermal behavior with the associated mass losses. The adsorption efficiency of MO and MB dyes was investigated by the effects of the initial concentration of adsorbate (Ci) and the contact time (tc). The acid treatment was efficient for increasing the adsorption capacity of the anionic dye, and the Qmaxexp values measured were 2.2 mg/g, 67.4 mg/g e 47.8 mg/g to RF, RF1 e RF2, respectively. On the other hand, the acid functionalization of bentonite did not significantly modify the MB dye adsorption. The Sips equation was the best fit for the adsorption isotherms. Thus, we found that the acid-functionalized bentonite increases the anionic dye adsorption by up to 8000%. The increased adsorptive capacity of acidified bentonite was explained in terms of electrostatic attraction between the clay surface and the dye molecule.

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Section: Introductionmentioning

confidence: 99%

Adsorption of Anionic Dye on the Acid-Functionalized Bentonite

et al. 2020

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“…Bentonite-CTAB 243.90 This study Bentonite 10,63 [13] Magnetic recoverable carbon 120.48 [14] Carbon nanotube hybrid polymer adsorbents 20-100 [15] 22-2-10 modified vermiculite 85 [16] modified chitosan 24.37 [17] BPA Bentonite-CTAB 256,41 This study Organobentonite 1 2 7. 7 [10] Calcium alginate/organo activated bentonite (A-OAB) 252.9 [2] Fe3O4-polyaniline 28.1 [18] sulfur-doped titanium dioxide on magnetic bentonite (CST/γ-Fe2O3-BT) 7 7.…”

Section: Pcpmentioning

confidence: 99%

Removal Efficiency of Phenolic Compounds (Bisphenol A and Pentachlorophenol) by Adsorption Using a Bentonite-CTAB

Hadoudi,

Ahari,

Zaki

et al. 2024

Recent Advances in Montmorillonite

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Bentonite clay modified with cetyltrimethylammonium bromide (CTAB) has been investigated as an effective adsorbent for the removal of bisphenol A (BPA) and pentachlorophenol (PCP) from aqueous solutions. The adsorption performance of Bentonite-CTAB was evaluated by conducting batch adsorption experiments under different conditions. The adsorption isotherms of BPA and PCP on Bentonite-CTAB (BT-CTAB) were analyzed using the Langmuir and Freundlich models. The Langmuir model provided a better fit to the experimental data, suggesting the presence of monolayer adsorption. The adsorption kinetics of BPA and PCP on Bentonite-CTAB were studied using pseudo-first-order and pseudo-second-order models. The results indicate that the adsorption process follows pseudo-second-order kinetics, suggesting that the adsorption is controlled principally by chemisorption. Equilibrium time for both pollutants was achieved within 30–40 min. The results of adsorption studies indicated that Bentonite-CTAB exhibited excellent adsorption capacity for bisphenol A and pentachlorophenol. The high surface area and presence of active sites on Bentonite-CTAB favored adsorption of pollutants from aqueous solution. The adsorption process adopted pseudo-second-order kinetics, indicating the involvement of chemisorption. the adsorption isotherms of BPA and PCP on Bentonite-CTAB were analyzed using the Langmuir and Freundlich models. The Langmuir model provided a better fit to the data, suggesting monolayer adsorption.

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“…Clay minerals adsorbents also have proven effective for the adsorption of PPCPs. Among the PPCPs investigated are propranolol, ibuprofen, amoxicillin, diclofenac-sodium, imipramine, paracetamol, p-chlorophenol, and tetracycline species (Chauhan et al 2020a, b;del Mar Orta et al 2019;Ji et al 2019;Martín et al 2019;Obradović et al 2022;Sun et al 2017;Zhang et al 2021). It was, however, observed that efficient sorption occurs majorly via an ionic exchange mechanism (de Farias et al 2022;del Mar Orta et al 2019;Martín et al 2019;Obradović et al 2022).…”

Section: Clay Mineralsmentioning

confidence: 99%

Methods to prepare biosorbents and magnetic sorbents for water treatment: a review

et al. 2023

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Access to drinkable water is becoming more and more challenging due to worldwide pollution and the cost of water treatments. Water and wastewater treatment by adsorption on solid materials is usually cheap and effective in removing contaminants, yet classical adsorbents are not sustainable because they are derived from fossil fuels, and they can induce secondary pollution. Therefore, biological sorbents made of modern biomass are increasingly studied as promising alternatives. Indeed, such biosorbents utilize biological waste that would otherwise pollute water systems, and they promote the circular economy. Here we review biosorbents, magnetic sorbents, and other cost-effective sorbents with emphasis on preparation methods, adsorbents types, adsorption mechanisms, and regeneration of spent adsorbents. Biosorbents are prepared from a wide range of materials, including wood, bacteria, algae, herbaceous materials, agricultural waste, and animal waste. Commonly removed contaminants comprise dyes, heavy metals, radionuclides, pharmaceuticals, and personal care products. Preparation methods include coprecipitation, thermal decomposition, microwave irradiation, chemical reduction, micro-emulsion, and arc discharge. Adsorbents can be classified into activated carbon, biochar, lignocellulosic waste, clays, zeolites, peat, and humic soils. We detail adsorption isotherms and kinetics. Regeneration methods comprise thermal and chemical regeneration and supercritical fluid desorption. We also discuss exhausted adsorbent management and disposal. We found that agro-waste biosorbents can remove up to 68–100% of dyes, while wooden, herbaceous, bacterial, and marine-based biosorbents can remove up to 55–99% of heavy metals. Animal waste-based biosorbents can remove 1–99% of heavy metals. The average removal efficiency of modified biosorbents is around 90–95%, but some treatments, such as cross-linked beads, may negatively affect their efficiency.

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Single and simultaneous adsorption of methyl orange and p-chlorophenol on organo-vermiculites modified by an asymmetric gemini surfactant

Cited by 7 publications

References 57 publications

Adsorption of Anionic Dye on the Acid-Functionalized Bentonite

Adsorption of Anionic Dye on the Acid-Functionalized Bentonite

Removal Efficiency of Phenolic Compounds (Bisphenol A and Pentachlorophenol) by Adsorption Using a Bentonite-CTAB

Methods to prepare biosorbents and magnetic sorbents for water treatment: a review

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