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

• Published in: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Vol. 118; pp. 1121 - 1128
• Main Authors: Zain, N.N.M., Abu Bakar, N.K., Mohamad, S., Saleh, N.Md
• Format: Journal Article
• Language: English
• Published: England Elsevier B.V 24.01.2014
• Subjects: Chlorophenols - isolation & purification; Cloud point extraction; Green Chemistry Technology - methods; Greener method; Nitrophenols - isolation & purification; Phenol; Spectrophotometry; Surface-Active Agents - chemistry; UV–Vis spectrophotometer; Water - analysis; Water Pollutants, Chemical - isolation & purification; Water Purification - methods; Water sample; Cloud point extraction; Water sample; Phenol; UV–Vis spectrophotometer; Greener method
• ISSN: 1386-1425; 1873-3557
• DOI: 10.1016/j.saa.2013.09.129

Schematic of cloud point extraction process. [Display omitted] •The optimize method of the cloud point extraction (CPE) has been developed by using nonionic DC193C surfactant and UV–Vis spectrophotometer.•Performance of nonionic DC193C surfactant has been studied in detail for several parameters that affected the extraction efficiency.•The different on the hydrophobicity of phenolic compounds have been studied.•Application of the developed method with environment water samples. A greener method based on cloud point extraction was developed for removing phenol species including 2,4-dichlorophenol (2,4-DCP), 2,4,6-trichlorophenol (2,4,6-TCP) and 4-nitrophenol (4-NP) in water samples by using the UV–Vis spectrophotometric method. The non-ionic surfactant DC193C was chosen as an extraction solvent due to its low water content in a surfactant rich phase and it is well-known as an environmentally-friendly solvent. The parameters affecting the extraction efficiency such as pH, temperature and incubation time, concentration of surfactant and salt, amount of surfactant and water content were evaluated and optimized. The proposed method was successfully applied for removing phenol species in real water samples.