Performance and mechanism of dye extraction from aqueous solution using synthesized deep eutectic solvents

Kaur, Paramjit; Rajani, Nikhil; Kumawat, Piyush Kumar; Singh, Neetu; Kushwaha, Jai Prakash

doi:10.1016/j.colsurfa.2017.12.013

Cited by 54 publications

(26 citation statements)

References 32 publications

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“…The absorption band is observed at 1,660 cm −1 , which represents stretching frequency of carbonyl group (C=O), whereas N–H deformation and stretching are observed at 1,608 cm −1 and 3,184 cm −1 , respectively (Delgado-mellado et al , 2018; Manivannan and Rajendran, 2011). Owing to the N–H bending to the carbonyl group, amide shows two peaks in the range of 1,510–1,700 cm −1 and observed peaks are 1,608 and 1,660 cm −1 (Dadrasnia and Ismail, 2015; Kaur et al , 2018). FTIR spectra shows that all parental functional groups of reagents are present in the DES spectrum.…”

Section: Resultsmentioning

confidence: 99%

A novel approach for dyeing of polyester using non-aqueous deep eutectic solvent as a dyeing medium

Pawar

Adivarekar

2020

PRT

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Purpose Textile industry is considered to be one of the largest consumers of water. There needs to be an alternative for water in textile wet processing. Solvent dyeing can be an approach to replace the use of water in dyeing for water conservation. Design/methodology/approach In this study, the dyeing of polyester was carried out using conventional and solvent dyeing methods. The solvent used was non-aqueous, deep eutectic solvent (DES) prepared using choline chloride and urea. Dyeing parameters such as time, temperature and pH were optimized for a concentration of dye using the solvent and were compared with the conventional dyeing. Findings The prepared solvent was characterized in terms of Fourier-transform infrared resonance and 1H and 13C nuclear magnetic resonance to analyze the reaction between choline chloride and urea. Dyeing performance in terms of K/S and fastness properties of dyed fabrics were evaluated and found to be at par against conventional dyeing. Originality/value Use of DES as a dyeing medium is a novel approach in the textile industry.

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Section: Resultsmentioning

confidence: 99%

A novel approach for dyeing of polyester using non-aqueous deep eutectic solvent as a dyeing medium

Pawar

Adivarekar

2020

PRT

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“…This happens due to the fact that GC3 : 1 DES represents high hydrogen bonding opportunity when the substrate is in zwitterionic form. [39] The hydrogen bonding mechanism of DOX o and DES-PSSAC is shown in Figure 7. Beyond pH > 7.7, the formation of DOX À starts, and consequently, the adsorption due to hydrogen bonding weakens, resulting in decreased DOX removal (%).…”

Section: Effect Of Solution Ph On Adsorptive Uptake Of Doxmentioning

confidence: 99%

Efficient Adsorption of Doxycycline Hydrochloride Using Deep Eutectic Solvent Functionalized Activated Carbon Derived from Pumpkin Seed Shell

2021

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The emerging deep eutectic solvents (DESs) are being utilized in different areas of science and engineering due to their exceptional physicochemical properties. In this study, choline chloride-based DES was prepared in conjugation with glycolic acid (GA) as a hydrogen bond donor (HBD). Activated carbon was derived from pumpkin seed shell (PSS) using microwaveassisted pyrolysis technique in an N 2 environment. The potential of synthesized DES was evaluated as a functionalization agent for PSSAC. DES functionalized PSSAC (DES-PSSAC) was characterized using FTIR, XRD, FESEM and BET surface area to confirm the functionalization and identify the physicochemical changes. This prepared DES-PSSAC was used as an adsorbent for the uptake of Doxycycline hydrochloride (DOX) from its aqueous solution. The influence of different process parameters was inspected in order to determine the optimal experimental conditions. At optimized parameters, the kinetics and thermodynamics studies were explored. Used DES was confirmed to be effectively grafted onto the PSSAC surface. The experimental data, best suited to the Pseudo second-order kinetic model, whereas adsorption isotherm data were best represented by Freundlich and R-P isotherm models. The recorded maximum adsorption capacity (q max ) was found to be 30.35 mg/g. High adsorption performance of DES-PSSAC towards DOX uptake and its reusability exhibited that this novel adsorbent can be applied to remove pharmaceutical pollutants.

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“…Mass transfer performance is surveyed using overall volumetric mass transfer coefficient determination (k L α). Kaur et al, (2018) prepared and applied glycolic acid and choline chloride based deep eutectic solvents (DESs) to explore its capability for Eriochrome black T (EBT) dye extraction from aqueous solution using liquid-liquid micro-extraction (84) . The effects of pH, DESs dose and dye concentration on % extraction efficiency were studied and reported.…”

Section: Liquid Membrane Extractionmentioning

confidence: 99%

A Comprehensive Review on Liquid-Liquid Extraction Based Systems in Treatment of Textile Wastewater

Sivamani¹,

Manimaran²,

A³

et al. 2021

IJST

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Performance and mechanism of dye extraction from aqueous solution using synthesized deep eutectic solvents

Cited by 54 publications

References 32 publications

A novel approach for dyeing of polyester using non-aqueous deep eutectic solvent as a dyeing medium

A novel approach for dyeing of polyester using non-aqueous deep eutectic solvent as a dyeing medium

Efficient Adsorption of Doxycycline Hydrochloride Using Deep Eutectic Solvent Functionalized Activated Carbon Derived from Pumpkin Seed Shell

A Comprehensive Review on Liquid-Liquid Extraction Based Systems in Treatment of Textile Wastewater

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