Economic and environmental impact assessment of extractive distillation with renewable entrainers for reprocessing aqueous 2-Propanol

Natural Deep Eutectic Solvent-Based Dispersive Liquid–Liquid Microextraction Coupled with Direct Analysis in Real Time Mass Spectrometry: A Green Temperature-Mediated Analytical Strategy

“…9,10 The use of DESs in sample preparation fits perfectly with GAC principles due to their attractive features of tunable miscibility, high thermal stability, good biodegradability, and low cost. 11,12 After dedicated sample pretreatment, the DES extracts can be treated by a variety of analytical techniques, such as (a) spectrophotometry; 13,14 (b) gas chromatography (GC) coupled with thermal conductivity detector, 15 flame ionization detector 16−20 or various types of mass spectrometers; 21,22 phenated with ultraviolet−visible detector, 23−26 fluorescence detector, 27 or different mass spectrometers. 28,29 As a new generation of green solvents, natural deep eutectic solvents (NADESs) are composed of constituents from natural sources.…”

“…The resulting eutectic mixture has a much lower melting point than that of each individual component due to intermolecular interactions . As a promising and economically viable alternative to traditional organic solvents, DESs have demonstrated growing applicability as extracting solvents in solid-phase extraction (SPE), liquid–liquid extraction (LLE), microwave-assisted extraction (MAE), ultrasound-assisted extraction (UAE), pressurized liquid extraction (PLE), and notably liquid-phase microextraction (LPME), such as single-drop microextraction (SDME), hollow-fiber (HF)-LPME, and dispersive liquid–liquid microextraction (DLLME). , The use of DESs in sample preparation fits perfectly with GAC principles due to their attractive features of tunable miscibility, high thermal stability, good biodegradability, and low cost. , After dedicated sample pretreatment, the DES extracts can be treated by a variety of analytical techniques, such as (a) spectrophotometry; , (b) gas chromatography (GC) coupled with thermal conductivity detector, flame ionization detector − or various types of mass spectrometers; , or (c) high-performance liquid chromatography (HPLC) hyphenated with ultraviolet–visible detector, − fluorescence detector, or different mass spectrometers. , As a new generation of green solvents, natural deep eutectic solvents (NADESs) are composed of constituents from natural sources . NADESs have been used as effective extraction media, showing high solubilizing capacities for a broad range of analytes, such as chalcones, anthocyanins, and phenolic acids. − …”

Design and optimization of extractive distillation of benzene–n‐propanol with ionic liquid as entrainer

“…[5][6][7] The selection of a qualified entrainer is the key to ED. [8][9][10] The azeotrope mixture of benzene-n-propanol can be completely separated using an organic solvent entrainer such as cyclohexane or choline chloride/urea mixed solution and an inorganic salt entrainer such as LiCl. However, the conventional entrainers are not easily recovered, and can cause air pollution or corrosion of equipment and pipelines.…”