Simultaneous Extraction, Enrichment and Removal of Dyes from Aqueous Solutions Using a Magnetic Aqueous Micellar Two-Phase System

Abstract

Abstract:The magnetic aqueous micellar two-phase system (MAMTPS) has the advantages combined of magnetic solid phase extraction (MSPE) and aqueous micellar two-phase system (AMTPS). Thus, MAMTPS based on Fe 3 O 4 magnetic nanoparticles (MNPs) and a nonionic surfactant Triton X-114 (TX-114) was developed for the extraction, enrichment and removal of three dyes (Congo red, methyl blue, and methyl violet) from aqueous solutions in this study. The MNPs Fe 3 O 4 @NH 2 was screened as the optimal MNPs benefiting the extraction. Then, the influencing factors of MNPs amount, TX-114 concentration, vibration time, and extraction temperature were investigated in detail. The results showed that the extraction efficiencies of three dyes almost reached 100% using MAMTPS under the optimal conditions; MAMTPS had higher extraction ability than the individual MSPE or AMTPS. Thus, MAMTPS had the advantages of simple operation, high extraction ability, easy recycling of MNPs, and short phase-separation time, which showspotential for use in the extraction and analysis of contaminants from water samples.

Extraction of Bionanomaterials from the Aqueous Bulk by Using Surface Active and Water-Soluble Magnetic Nanoparticles

“…The extraction ability of magnetic NPs − depends on their hydrophilic as well as hydrophobic interactions which can be easily controlled by choosing appropriate surfactant stabilized magnetic NPs − with strong affinity to interact with the hydrophilic and hydrophobic domains of surface adsorbed proteins on Au NPs. Thus, the extraction of protein coated Au NPs from the aqueous bulk depends on the amphiphilic interactions existing between the surfactant stabilized magnetic NPs and the hydrophilic and/or hydrophobic domains of proteins adsorbed on the surface of the Au NPs.…”

Biosynthesis of silver nanoparticles using upland cress: purification, characterisation, and antimicrobial activity

“…Triton X‐114 was used for nanoparticle purification to remove organic matter. Triton X‐114 is a non‐ionic detergent that allows for phase separation, in which the silver nanoparticles could be separated from organic materials in the leaf extracts [21–23].…”

“…Triton X-114 was used for nanoparticle purification to remove organic matter. Triton X-114 is a non-ionic detergent that allows for phase separation, in which the silver nanoparticles could be separated from organic materials in the leaf extracts [21][22][23] 2.2. Biosynthesis of the silver nanoparticles using upland cress: Ten grams of upland cress was cut and boiled in 100 ml deionised (DI) water (60°C) [24][25][26].…”