Extraction of 1-amino-2-Naphthol-4-Sulfonic acid from wastewater using trioctylamine (N, N-dioctyloctan-1-amine) in methyl isobutyl ketone

Gai, Hengjun; Zhong, Caiyun; Qiao, Lin; Chen, Shuo; Xiao, Meng; Song, Hongbing

doi:10.1016/j.jclepro.2018.08.082

Cited by 22 publications

(6 citation statements)

References 26 publications

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“…At the same time, it also has the advantages of simple operation process and low costs in physical extraction. 15,16 Therefore, complex extraction has many obvious characteristics and potential application in the field of dye wastewater treatment, and it is also another the most choice for dye wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

A green dye wastewater treatment process: Complex extraction of Telon yellow 4R from dye wastewater and its application in nylon fabric dyeing

Yu,

Zheng,

Wang

2023

Env Prog and Sustain Energy

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Complex extraction, which has the characteristics of high efficiency and selectivity of chemicals, has unique advantages in dye wastewater treatment. In the paper, a green closed‐loop dye wastewater treatment route for dyeing industry is re‐evaluated by studying the complex extraction and stripping of Telon yellow 4B, and dyeing test of regenerated dye. FT‐IR characteristic peaks of the initial organic phase and the regenerated organic phase are consistent, and the dye can be migrated from the loaded organic phase to the aqueous phase after stripping. The concentration of dye in the aqueous phase and extraction conditions have a significant effect on extraction rate, especially the aqueous‐organic phase ratio and the pH value of the aqueous phase. Meanwhile, the stripping conditions have a marked impact on stripping rate, among which NaOH dosage is an important factor. The regenerated dye solution and the freshly prepared dye solution at same concentration have the same color shade and K/S value, and the color fastness of dyed fabrics is all above Grade 4. High extraction rate, high stripping rate, excellent reusability of regenerated organic phase, and the dyeing performance of the regenerated dye prove that complex extraction is a green dye wastewater treatment process with the practical feasibility.

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Section: Introductionmentioning

confidence: 99%

A green dye wastewater treatment process: Complex extraction of Telon yellow 4R from dye wastewater and its application in nylon fabric dyeing

Yu,

Zheng,

Wang

2023

Env Prog and Sustain Energy

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“…Many techniques have been adapted and proposed to deal with the industrial wastewater containing ASAs, such as advanced oxidation technology [3][4][5], biological treatment [6][7][8], extraction [9,10], and adsorption [2,11,12]. Among these methods, adsorption is generally considered an effective process to remove organic pollutants and purify contaminated water due to its simplicity, rapidity, and low cost.…”

Section: Introductionmentioning

confidence: 99%

Effect of Functional Group Density of Anion Exchange Resins on Removal of p-Toluene Sulfonic Acid from Aqueous Solution

Sun

Zheng

et al. 2019

Applied Sciences

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Adsorption using anion exchange resins is an efficient method for the removal of aromatic sulfonic acids (ASAs) from industrial wastewater. In this study, a series of weak-base anion exchangers (SD1–SD5) were synthesized to investigate the effect of functional group density of resins on the adsorption of ASAs from wastewater containing competitive inorganic anions. p-Toluene sulfonic acid (PTSA) was selected as a target pollutant, and Na2SO4 was chosen as the competitive inorganic salt because of its widespread existence in industrial wastewater. Adsorption performances of these resins were evaluated and compared in terms of selectivity, kinetics, isotherms, regeneration, and dynamic adsorption behavior. Importantly, the PTSA uptake increased with the raising content of functional groups on resins in the absence of Na2SO4; however, in the presence of a high level of Na2SO4 (for example, ≥1%), a decrease in the functional group density could improve the adsorption capacity of resins for PTSA. Moreover, desorption and fixed bed column experiments were conducted in all resins, thereby confirming the effect of functional group density of resins on the PTSA adsorption in actual application. In brief, this research will provide a better understanding for the design and preparation of anion exchangers for the effective removal of ASA from wastewater.

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“…It enables amines to contribute in a large variety of reactions as a base or a nucleophile. Amines play a prominent role in the field of extractive metallurgy (Biswas et al, 2017;Das et al, 2014;Gai et al, 2018;Hesford and McKay, 1960). The lone pair of an electron on the nitrogen atom determines the chemistry of aliphatic amines and also by the tendency of the hydrogen atoms bonded to nitrogen to be replaced by other substituents (Biswas et al, 2017;Hesford and McKay, 1960;Saw et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…This property, combined with the difference in solubility between amine and salt, makes amines good acid acceptors and solvents for gas scrubbing and certain extraction processes. Extraction of various types of organic acids (e.g.1-Amino-2-Naphthol-4-Sulfonic acid (Gai et al, 2018), Acrylic acid (Tuyun and Uslu, 2015), Formic Acid (Uslu, 2009), Picric Acid (Uslu, 2011) etc. ) have been studied using TOA as extractant.…”

Section: Introductionmentioning

confidence: 99%

Liquid-liquid extraction of mineral acids using Tri-n-octylamine

Karmakar

Biswas

Khatun

2019

Bangladesh J. Sci. Ind. Res.

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The present work reports the extraction behaviors of mineral acids: HClO 4 , HNO 3 , HCl and H 2 SO 4 (commonly found in acidic bleed solutions from the hydrometallurgical route of metal extraction processes) by tri-n-octylamine (TOA) dissolved in distilled colorless kerosene. The systems have been investigated as functions of various experimental parameters, such as time, [acid], [TOA], temperature, extraction stage and the organic to aqueous phase volume ratio (O/A). Strippings was also examined. Equilibration time is less than 60 min. The acid concentration in the organic phase at equilibrium is increased with increasing initial acid concentration in the aqueous phase for all systems. However, the is after %extraction decreased with increasing initial acid concentration in the aqueous phase. The % extraction increased remarkably with increasing [TOA] for all cases. Being the ratio of the [acid] in the organic to aqueous phase at equilibrium equal to extraction ratio, D; the log D vs. log [TOA] plot is almost a curve with slope 1 at lower concentration region and with slope ~2 at higher concentration region. The extraction efficiency of TOA varies in the order: HClO 4 > HNO 3 > HCl > H 2 SO 4 . The acid-base-neutralization (extraction) reactions are exothermic with ΔH value much higher than -57 kJ/mol obtainable for of a strong acid -strong base neutralization. The loading capacity of extractant (g per 100 g TOA) for acids varied in the order: HClO 4 (30.69) > HNO 3 (20.49) > H 2 SO 4 (17.87) > HCl (10.31). On using lower organic to aqueous phase volume ratio (O/A), the organic phase saturated with acid can be obtained on stage-wise extraction. The extracted organic phase, for all systems (excepting H 2 SO 4 -system) under investigation, can be stripped effectively in a single stage by 0.10 g eq/L NaOH solution to the extents of more than 96%. However, for H 2 SO 4 -system, two-stage stripping will be found effective.

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Extraction of 1-amino-2-Naphthol-4-Sulfonic acid from wastewater using trioctylamine (N, N-dioctyloctan-1-amine) in methyl isobutyl ketone

Cited by 22 publications

References 26 publications

A green dye wastewater treatment process: Complex extraction of Telon yellow 4R from dye wastewater and its application in nylon fabric dyeing

A green dye wastewater treatment process: Complex extraction of Telon yellow 4R from dye wastewater and its application in nylon fabric dyeing

Effect of Functional Group Density of Anion Exchange Resins on Removal of p-Toluene Sulfonic Acid from Aqueous Solution

Liquid-liquid extraction of mineral acids using Tri-n-octylamine

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