Leaching of metals from printed circuit boards using ionic liquids was written by Barrueto, Yahaira;Hernandez, Pia;Jimenez, Yecid;Morales, Jaime. And the article was included in Journal of Material Cycles and Waste Management in 2021.HPLC of Formula: 478935-29-4 The following contents are mentioned in the article:
The rise in the electronics industry has impacted the environment through the large volumes of waste that are improperly disposed of and the growing demand for precious and rare metals from natural sources. Leaching of copper, cobalt, gold, and silver from printed circuit boards of waste cellular phone has been carried out using imidazolium cation-based ionic liquids (ILs). For the studied metals, the obtaining of selective leaching obtained is reported for the first time, where acidic ionic liquids ([Bmim]HSO4 and [Hmim]HSO4) leached copper and cobalt, while basic ionic liquids ([Bmim]Cl and [Bmim]Br) extracted gold and silver. The effect of temperature has been studied by testing at 60 and 80掳C, where the highest extraction was obtained at the lowest temperature The concentration of the ionic liquid was also studied through a test without ionic liquid and then varying from 20 to 60%, where at higher concentration the extraction is more efficient ratifying the use of ionic liquids as leaching solutions for metals. Ionic liquids have demonstrated the ability to leach metal ions as the primary reagent in the leaching solution The following extraction percentages were obtained for each metal: 86.2% copper, 99.5% cobalt, 40.8% gold, and 44.6% silver. This study involved multiple reactions and reactants, such as 1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4HPLC of Formula: 478935-29-4).
1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4) belongs to imidazole derivatives. The solubility of imidazoles in ethers is lower than that in alcohols and decreases with increasing chain length of the ethers . In contrast, the solubility of benzimidazoles in alcohols (C3鈥揅6) is higher than in water and generally decreases with a Imidazole is incorporated into many important biological compounds. The most pervasive is the amino acid histidine, which has an imidazole side-chain. Histidine is present in many proteins and enzymes, e.g. by binding metal cofactors, as seen in hemoglobin.HPLC of Formula: 478935-29-4
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem