Optimization of a greener method for removal phenol species by cloud point extraction and spectrophotometry

Zain, Nur Nadhirah Mohamad; Bakar, Nor Kartini Abu; Mohamad, Sharifah; Saleh, Noorashikin Md

doi:10.1016/j.saa.2013.09.129

Cited by 61 publications

(33 citation statements)

References 47 publications

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“…The initial concentration of 2,4,6-TCP ranged from 30 to 300 mg/L (1.5 to 15 mg per 50 mL solution). The initial pH of solution (3,4,5,7,9,11) was adjusted by dropwise adding HCl or NaOH solution. The mixture was stirred with an agitation speed of 100 rpm during adsolubilization process.…”

Section: Batch Adsolubilization Testsmentioning

confidence: 99%

“…Therefore, it is highly important to remove 2,4,6-TCP compound from aqueous solution. Currently, a number of methods have been developed to eliminate 2,4,6-TCP from wastewater [11][12][13][14][15]. However, these methods and materials usually involve high cost, complex process, and even may lead to secondary pollution during degradation process.…”

Section: Introductionmentioning

confidence: 99%

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Adsolubilization of 2,4,6-trichlorophenol from aqueous solution by surfactant intercalated ZnAl layered double hydroxides

Zhao

Xiao-hua

Tian

et al. 2015

Chemical Engineering Journal

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Section: Batch Adsolubilization Testsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adsolubilization of 2,4,6-trichlorophenol from aqueous solution by surfactant intercalated ZnAl layered double hydroxides

Zhao

Xiao-hua

Tian

et al. 2015

Chemical Engineering Journal

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“…The effects of different operating parameters, i.e. pH, concentration of non-ionic surfactant, temperature, incubation time, concentration of salt and analytes, interference study, and water content on the extraction of the phenol species have been studied in detail [31]. From the experimental data, a solubilisation isotherm is developed to quantify the amount of phenols solubilisation.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Study of removal of phenol species by adsorption on non-ionic silicon surfactant after cloud point extraction methodology

Zain

Bakar

Mohamad

2016

Desalination and Water Treatment

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In the present study, CPE was carried out to extract phenol species from aqueous solution using the non-ionic silicone surfactant of DC193C. The non-ionic silicone surfactant of DC193C was chosen because of it is well known as an environmentally friendly solvent. The adsorption mechanism between the non-ionic silicone surfactant of DC193C and phenol species was studied. Our results indicate that, the adsorption of the phenol species from aqueous solution on the DC193C surfactant was in proportion to their hydrophobicities, according to the following order; 4-NP < 2,4-DCP < 2,4,6-TCP. The data of the equilibrium concentration and amount of adsorption in the CPE system for the three phenols species follow the Langmuir-type isotherm. On some assumptions, a developed Langmuir isotherm was used to calculate the feed surfactant concentration required for the removal of the three phenol species up to the extraction efficiency of 90%. The developed correlations may be useful to design a cloud point extractor of a desired efficiency. Thermodynamic parameters including the Gibbs free energy (ΔG˚), enthalpy (ΔH˚), and entropy (ΔS˚) were also calculated. These parameters indicated that the adsorption of the three phenol species solubilized into the non-ionic DC193C surfactant is feasible, spontaneous, and endothermic in the temperature ranging from 298 to 353 K.

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“…There are many methods described in the literature for the quantification of phenol and its derivatives. The methods widely used are gas chromatography-mass spectrometry (GC-MS) (Faludi et al 2015), highperformance liquid chromatography (HPLC) (Tang et al 2014), capillary electrophoresis (Wang et al 2010), spectrophotometry (Zain et al 2014), and electrochemical methods (Mülazımoğlu et al 2011;Mahmoudi Moghaddam et al 2014;Noh and Yang 2014).…”

Section: Introductionmentioning

confidence: 99%

Fabrication of novel TiO2 nanoparticles/Mn(III) salen doped carbon paste electrode: application as electrochemical sensor for the determination of hydrazine in the presence of phenol

Mahmoudi–Moghaddam

Beitollahi

Tajik

et al. 2015

Environ Monit Assess

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Hydrazine and phenol are two important environmental pollutants. In this work, an electrochemical sensor for the selective and sensitive detection of hydrazine in presence of phenol was developed by the bulk modification of carbon paste electrode (CPE) with TiO2 nanoparticles and Mn(III) salen. Large peak separation, good sensitivity, and stability allow this modified electrode to analyze hydrazine individually and simultaneously along with phenol. Applying square wave voltammetry (SWV), a linear dynamic range of 3 × 10(-8)-4.0 × 10(-4) M with detection limit of 10.0 nM was obtained for hydrazine. Finally, the proposed method was applied to the determination of hydrazine and phenol in some real samples.

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Optimization of a greener method for removal phenol species by cloud point extraction and spectrophotometry

Cited by 61 publications

References 47 publications

Adsolubilization of 2,4,6-trichlorophenol from aqueous solution by surfactant intercalated ZnAl layered double hydroxides

Adsolubilization of 2,4,6-trichlorophenol from aqueous solution by surfactant intercalated ZnAl layered double hydroxides

Study of removal of phenol species by adsorption on non-ionic silicon surfactant after cloud point extraction methodology

Fabrication of novel TiO2 nanoparticles/Mn(III) salen doped carbon paste electrode: application as electrochemical sensor for the determination of hydrazine in the presence of phenol

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