Ti-pillared montmorillonite clay for adsorptive removal of amoxicillin, imipramine, diclofenac-sodium, and paracetamol from water

Chauhan, Manisha; Saini, Vipin K.; Suthar, Surindra

doi:10.1016/j.jhazmat.2020.122832

Cited by 115 publications

(24 citation statements)

References 66 publications

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“…Similar results were observed in our previous studies regarding the loading of Biotin-T (constituted by the quaternary ammonium salt didecyldimethylammonium chloride and 2-octyl-2H-isothiazole) (Dresler et al, 2017). This behavior can be explained by a different physicochemical interaction between the hydroxyl groups of the silica and the biocide components and, accordingly to previous study (Dresler et al, 2017), could be ascribed to ion (charged head groups of quaternary salts)-dipole (Si-O-H surface groups) interactions strengthened by the Lewis acid-base interaction among the phenyl group of benzyldimethyltridecylazanium chloride and the acidic sites (electropositive Si) in the MSN structure (Chauhan et al, 2020).…”

Section: Release Studiesmentioning

confidence: 54%

Formulation of Mesoporous Silica Nanoparticles for Controlled Release of Antimicrobials for Stone Preventive Conservation

et al. 2020

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The biotic deterioration of artifacts of archaeological and artistic interest mostly relies on the action of microorganisms capable of thriving under the most disparate environmental conditions. Thus, to attenuate biodeterioration phenomena, biocides can be used by the restorers to prevent or slow down the microbial growth. However, several factors such as biocide half-life, its wash-out because of environmental conditions, and its limited time of action make necessary its application repeatedly, leading to negative economic implications. Sound and successful treatments are represented by controlled release systems (CRSs) based on porous materials. Here, we report on the design and development of a CRS system based on mesoporous silica nanoparticles (MSNs), as a carrier, and loaded with a biocide. MSNs, with a diameter of 55 nm and cylindrical pores of ca. 3-8 nm arranged as parallel arrays concerning the NP diameter, and with 422 m 2 /g of specific surface area were synthesized by the sol-gel method assisted by oil in water emulsion. Biocide loading and release were carried out in water and monitored by UV-Vis Spectroscopy; in addition, microbiological assay was performed using as control the MCM-41 mesoporous silica loaded with the same biocide. The role of specific supramolecular interaction in regulating the release is discussed. Further, we demonstrated that this innovative formulation was useful in inhibiting the in vitro growth of Kocuria rhizophila, an environmental Gram-positive bacterial strain. Besides, the CRS here prepared reduced the bacterial biomass contaminating a real case study (i.e., stone derived from the Santa Margherita cave located in Sicily, Italy), after several months of treatment thus opening for innovative treatments of deteriorated stone artifacts.

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Section: Release Studiesmentioning

confidence: 54%

Formulation of Mesoporous Silica Nanoparticles for Controlled Release of Antimicrobials for Stone Preventive Conservation

et al. 2020

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“…Also [56], used a commercial montmorillonite as a study sample, with an average pore size of 65.74 Å and a total pore volume of 0.27 cm 3 /g. These authors [57] benefits of a commercial montmorillonite pillarization with titanium oxide in pharmaceuticals adsorption and the values obtained for montmorillonite before and after modification were 65 and 216 m 2 g -1 of surface area and 0.001 and 0.08 cm 3 g -1 of micropore volume, respectively. All the studies above presented satisfactory results regarding the adsorption of their respective contaminants.…”

Section: Resultsmentioning

confidence: 89%

Technological Evaluation of Cubati/Brazil Montmorillonite / Avaliação Tecnológica Da Montmorillonita De Cubati/Brasil

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Brasileiro

Barbato

et al. 2021

BJD

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“…One of the ways to improve the sorption of paracetamol is the use of modified MMT nanoclays. However, in previous studies, montmorillonite modified with titanium oxide exhibited weak sorption properties, adsorbing no more than 20.8% of paracetamol [ 57 ]. This value is much lower than that achieved in our study (63–67%) where the hydrophobic MMT-STA was used.…”

Section: Resultsmentioning

confidence: 99%

Pharmaceuticals Removal by Adsorption with Montmorillonite Nanoclay

Kryuchkova

Batasheva

Akhatova

et al. 2021

IJMS

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The problem of purifying domestic and hospital wastewater from pharmaceutical compounds is becoming more and more urgent every year, because of the continuous accumulation of chemical pollutants in the environment and the limited availability of freshwater resources. Clay adsorbents have been repeatedly proposed as adsorbents for treatment purposes, but natural clays are hydrophilic and can be inefficient for catching hydrophobic pharmaceuticals. In this paper, a comparison of adsorption properties of pristine montmorillonite (MMT) and montmorillonite modified with stearyl trimethyl ammonium (hydrophobic MMT-STA) towards carbamazepine, ibuprofen, and paracetamol pharmaceuticals was performed. The efficiency of adsorption was investigated under varying solution pH, temperature, contact time, initial concentration of pharmaceuticals, and adsorbate/adsorbent mass ratio. MMT-STA was better than pristine MMT at removing all the pharmaceuticals studied. The adsorption capacity of hydrophobic montmorillonite to pharmaceuticals decreased in the following order: carbamazepine (97%) > ibuprofen (95%) > paracetamol (63–67%). Adsorption isotherms were best described by Freundlich model. Within the pharmaceutical concentration range of 10–50 µg/mL, the most optimal mass ratio of adsorbates to adsorbents was 1:300, pH 6, and a temperature of 25 °C. Thus, MMT-STA could be used as an efficient adsorbent for deconta×ating water of carbamazepine, ibuprofen, and paracetamol.

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Ti-pillared montmorillonite clay for adsorptive removal of amoxicillin, imipramine, diclofenac-sodium, and paracetamol from water

Cited by 115 publications

References 66 publications

Formulation of Mesoporous Silica Nanoparticles for Controlled Release of Antimicrobials for Stone Preventive Conservation

Formulation of Mesoporous Silica Nanoparticles for Controlled Release of Antimicrobials for Stone Preventive Conservation

Technological Evaluation of Cubati/Brazil Montmorillonite / Avaliação Tecnológica Da Montmorillonita De Cubati/Brasil

Pharmaceuticals Removal by Adsorption with Montmorillonite Nanoclay

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