Cheap and biodegradable amino acid-based deep eutectic solvents for radioactive iodine capture via halogen bonds

Use of ammonium salts or binary mixtures derived from amino acids, glycine betaine, choline and indole-3-butyric acid as plant regulators

“…Energy consumption and production costs must be considered in the design of novel 'green' compounds. 1 Ammonium salts (including ionic liquids, ILs) [2][3][4][5][6] or binary mixtures (including eutectic mixtures) [7][8][9][10] are perfectly compatible with this trend. However, not every IL or binary mixture conforms to green chemistry guidelines.…”

Novel reed + deep eutectic solvent-derived adsorbents for recyclable and low-cost capture of dyes and radioactive iodine from wastewater

“…20 Due to these advantages, DESs are called as the green solvents of the 21st century and have been studied and applied in many areas. 11,[21][22][23][24][25][26][27][28][29][30][31] Although the removal efficiency of radioactive iodine using DESs is high and the cost is low, 1,2,32 recycling DESs after the capture of radioactive iodine is hardly possible. For example, ChI : methylurea could remove iodine with an efficiency of nearly 100% after 24 h. 32 PEG200 : thiourea and cysteine : lactic acid could remove nearly 100% of iodine within 8 h. 1,2 However, iodine capture by ILs and DESs is difficult for the regeneration of ILs and DESs.…”

“…11,[21][22][23][24][25][26][27][28][29][30][31] Although the removal efficiency of radioactive iodine using DESs is high and the cost is low, 1,2,32 recycling DESs after the capture of radioactive iodine is hardly possible. For example, ChI : methylurea could remove iodine with an efficiency of nearly 100% after 24 h. 32 PEG200 : thiourea and cysteine : lactic acid could remove nearly 100% of iodine within 8 h. 1,2 However, iodine capture by ILs and DESs is difficult for the regeneration of ILs and DESs. Moreover, most reports have focused on radioactive iodine dissolved in cyclohexane or hexane, 1,2,32,33 which is different from real situations in which radioactive iodine is easily released into oceans or lakes.…”

“…As one of the radioactive products, radioactive iodine has a long half-life and high carcinogenicity. 1,2 Capture of radioactive iodine is one of the possible routes to minimize the nuclear hazard from radioactive iodine. Conventional methods for the capture of radioactive iodine usually use metal-containing materials, 3 which are expensive and not sustainable.…”

Natural Deep Eutectic Solvents Based on Choline Chloride and Phenolic Compounds as Efficient Bioadhesives and Corrosion Protectors

“… 8 , 9 The most common NADES are based on mixtures of ChCl with organic acids, 10 , 11 polyalcohols, 12 , 13 and sugars 14 , 15 or a combination of these natural molecules with amino acids. 16 − 18 However, most traditional NADES lack functionalities, and new green mixtures are urgently demanded to expand the applicability fields of these natural solvents. In this sense, phenolics and flavonoids, nearly ubiquitous molecules found in vegetables and fruits, have been barely investigated for this purpose.…”