In an article, author is Nariyan, E., once mentioned the application of 3081-61-6, COA of Formula: C7H14N2O3, Name is L-Theanine, molecular formula is C7H14N2O3, molecular weight is 174.1977, MDL number is MFCD00059653, category is bromides-buliding-blocks. Now introduce a scientific discovery about this category.
Removal of iodides and bromides at parts per million concentrations using a novel bismuth composite material
Iodide and bromide ions in surface and ground waters (typically less than 0.05 mg/L for iodide and 0.5 mg/L for bromide) could react with natural organic matters under oxidative disinfection process and produce toxic disinfectant by-products. Therefore, removal of iodides and bromides in water treatment is desirable for improving drinking water quality. We have synthesized a micro-nano Bi2O3-Bi2S3 composite via a carbogenic sphere-supported synthesis strategy. A hydrothermal processing of sucrose resulted in uniform spherical carbogenic microspheres, which served as an excellent substrate for reaction between Bi(NO3)(3) and Na2SO4 in emulsion, forming Bi2O3-Bi-2(SO4)(3) composites, which was then converted into Bi2O3-Bi2S3 after calcination. Using 8 g/L of this material Bi2O3-Bi2S3, 87.69% of iodide at an initial concentration of 0.05 mg/L was removed after 3 h of contact, and 86.38% of bromide at an initial concentration of 0.5 mg/L was removed after 14 h. Such effective removal efficiency was retained when used in artificial groundwater treatment. Overall, this study developed a new method to produce the Bi2O3-Bi2S3 composite in high yield, and the as-synthesized Bi2O3-Bi2S3 composites exhibited high removal efficiencies toward I- and Br- through adsorption mechanism. (C) 2020 Elsevier Ltd. All rights reserved.
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