Biomimetic lipophilic activated carbon for enhanced removal of triclosan from water

Kaur, Harkirat; Hippargi, Girivyankatesh; Pophali, Girish R.; Bansiwal, Amit

doi:10.1016/j.jcis.2018.09.093

Cited by 27 publications

(4 citation statements)

References 40 publications

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“…It has been in use/production since 1972 for applications in hospitals and other medical facilities but is now being applied in a wide range of consumer products such as soap, toothpaste, detergents, and pesticides [ 57 ]. These contaminants are released into our water systems by outflow from wastewater treatment plants, runoff, and domestic disposal [ 58 ] and once they are present, they can partially dissolve to form toxic compounds and metabolites. The risks associated with exposure include suspected possibility of being hormone disruptors and triggering antimicrobial resistance genes [ 59 ].…”

Section: Contaminants Currently Featured In the Cec Knowledge Hubmentioning

confidence: 99%

Development of a GIS-based knowledge hub for contaminants of emerging concern in South African water resources using open-source software: Lessons learnt

Botha

Bamuza‐Pemu

Roopnarain

et al. 2023

Heliyon

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Section: Contaminants Currently Featured In the Cec Knowledge Hubmentioning

confidence: 99%

Development of a GIS-based knowledge hub for contaminants of emerging concern in South African water resources using open-source software: Lessons learnt

Botha

Bamuza‐Pemu

Roopnarain

et al. 2023

Heliyon

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“…It is a synthetic and lipid-soluble antimicrobial agent used in healthcare (e.g., antiseptic, disinfectant), veterinary products, and personal care products (e.g., hand soaps, shampoos, deodorants, cosmetics) in concentrations between 0.1 and 2.0% [8,9]. Triclosan has low water solubility (10 mg/L, at 25 • C) and high bioaccumulation/hydrophobicity (log K ow = 4.30) and pKa = 8.1; thus, triclosan is compatible with many materials [10]. In aquatic habitats, triclosan is accumulated in sediments/sludge being deposited in agricultural areas.…”

Section: Introductionmentioning

confidence: 99%

Efficient Decontamination: Caffeine/Triclosan Removal using Rice Husk in Batch and Fixed-Bed Columns

Almeida-Naranjo,

Cuestas,

Guerrero

et al. 2024

Water

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Abundant, easily accessible, and low-cost agro-industrial residues represent attractive alternatives for removing emerging contaminants from water. In this work, the aqueous adsorption of caffeine/triclosan onto rice husk (RH) was studied in batch and continuous processes. For this purpose, adsorbents with three particle size ranges (120–150, 300–600, 800–2000 µm) were prepared and evaluated. The composition, structure, surface morphology, functionality, and specific surface area of the RH biosorbents were determined. This characterization revealed that RH primarily consists of lignin, cellulose, and hemicellulose, making up to 80.1% of its composition. RH also exhibited an irregular surface, with several functional groups (OH, C=O, CH, C=C, C-OH), and a relatively small specific surface area (1.18 m2/g). Batch tests were carried out using different RH sizes, doses (1–50 g/L), and contact times (5–300 min), using 20 mL of caffeine/triclosan solutions (30 mg/L). Tests were conducted to fit the most adequate kinetics and isotherm models. The optimal doses (g/L) for caffeine and triclosan removal were 4.5 and 1.5 with small RH, 8.5 and 2.5 with medium RH, and 50.0 and 10.0 with large RH, respectively. The optimal contact times for all three particle sizes were 180 and 60 min. Triclosan removal was greater than that of caffeine (2.5–25.5%) with all three particle sizes, requiring less adsorbent (2.5–5.0 times) and shorter times (3 times). The experimental data fit better the Sips isotherm and Elovich kinetics models. The small (120–150 µm) particles achieved the highest caffeine/triclosan batch adsorption capacities (6.3/28.6 mg/g). Continuous tests were performed on fixed-bed columns of 1 cm in diameter, packed with 4, 5, and 8 cm of RH, operated with hydraulic loading rates between 2 and 4 m3/m2day. Small particles also reached the highest adsorption capacity in the removal of caffeine (352.7 mg/L) and triclosan (3797.2 mg/L), and the experimental data were well-fitted to the Bohart–Adams model. The research results not only demonstrate the effective removal of contaminants but also illustrate the versatility and applicability of rice husk in various conditions and systems.

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“…Because of no harmful byproducts and lower costs among the various technologies investigated for removing persistent and/or resistant compounds from aqueous solutions, the most promising technology seems to be adsorption [12,13]. Carbon-based materials are still regarded as the most attractive option amongst the most widely used adsorbents, and among them, a few studies have been conducted on TCy elimination [14].…”

Section: Introductionmentioning

confidence: 99%

Efficient tetracycline removal from aqueous solutions using ionic liquid modiﬁed magnetic activated carbon (IL@mAC)

Bazrafshan

Zarei

Mohammadi

et al. 2021

Journal of Environmental Chemical Engineering

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Tetracycline (TCy) belongs to PPCPs is such an widely used antibacterial drug, which is discharged from urban wastewater treatment plants or agricultural e uents. Due to low metabolism, poor absorption, overuse, and misuse, TCy is considered as threat to environmental and its removal from waste-water is vital. In this research, a novel ionic liquid modi ed magnetic activated carbon nanocomposite (IL@mAC) was synthesized, characterized, and the adsorption e ciency of IL@mAC for removal of TCy was investigated under different operational parameters of pH (3-11); dose of IL@mAC (0.01-0.1 g/50 mL); reaction time (30-240 min), and initial TCy concentration (50-1500 mg/L). The IL@mAC characterization was done using XRD, VSM, SEM-EDX, BET, and FTIR. Results of equilibrium experiment showed that the highest removal e ciency (~ 98%) was obtained using 0.06 g of IL@mAC in 135 min at pH 7 and temperature 303 K. Considering the correlation coe cients (R 2 ) for different adsorption models, it can be deduced that adsorption of TCy onto IL@mAC is better followed by Langmuir (0.9977) in comparison to Freundlich (0.9412), and Temkin (0.9536) models. Furthermore, Langmuir adsorption capacity was observed to be 666.7 mg/g. The regeneration study showed that IL@mAC retained around 85% TCy adsorption e ciency after 6th cycle. Finally, the present study indicates that the IL@mAC is of a high applicability and has extremely high adsorbent capacity to remove TCy from water compared to most of other benchmark adsorbents reported in literature.

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Biomimetic lipophilic activated carbon for enhanced removal of triclosan from water

Cited by 27 publications

References 40 publications

Development of a GIS-based knowledge hub for contaminants of emerging concern in South African water resources using open-source software: Lessons learnt

Development of a GIS-based knowledge hub for contaminants of emerging concern in South African water resources using open-source software: Lessons learnt

Efficient Decontamination: Caffeine/Triclosan Removal using Rice Husk in Batch and Fixed-Bed Columns

Efficient tetracycline removal from aqueous solutions using ionic liquid modiﬁed magnetic activated carbon (IL@mAC)

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