Sorption and desorption kinetics of surfactants TX-100 and DPC on different fractions of soils was written by Yeh, Carol Kuei-Jyum;Lin, Li-Chin. And the article was included in Journal of Environmental Science and Health, Part A: Toxic/Hazardous Substances & Environmental Engineering in 2003.Application of 104-73-4 This article mentions the following:
Surfactant-based technologies are promising remediation alternatives. The information on sorption and desorption kinetics of surfactants on soils is important in the successful application of surfactant-based technologies. The sorption and desorption rates of nonionic surfactant TX-100 and cationic DPC were correlated to the surfactant concentration, soil organic matters (SOM), and soil cation exchange capacity (CEC). The results indicated that at higher initial surfactant concentrations, sorption rates of surfactants increased linearly with SOM and soil CEC for TX-100 and DPC, resp. The sorption rates and initial surfactant concentrations followed the 1st order relation for TX-100 and 2nd order for DPC. A linear relation between the sorption rates of surfactants and soil characteristics was developed. The desorption rates of TX-100 and DPC increased linearly with the increased surfactant levels sorbed on soils but were irrelevant to soil characteristics and the contact time of surfactant sorption. The rate of surfactant desorption was similar as the amount of surfactants sorbed on soils was in the same range. The cationic DPC sorbed and desorbed at 2 orders of magnitude faster than the nonionic TX-100, suggesting that both sorption and desorption have to be considered in the remediation process. In the experiment, the researchers used many compounds, for example, 1-Dodecylpyridin-1-ium bromide (cas: 104-73-4Application of 104-73-4).
1-Dodecylpyridin-1-ium bromide (cas: 104-73-4) belongs to pyridine derivatives. Pyridine has a dipole moment and a weaker resonant stabilization than benzene (resonance energy 117 kJ·molâ? in pyridine vs. 150 kJ·molâ? in benzene). Reduced pyridines, namely tetrahydropyridines, dihydropyridines and piperidines, are found in numerous natural and synthetic compounds. The synthesis and reactivity of these compounds have often been driven by the fact many of these compounds have interesting and unique pharmacological properties. Application of 104-73-4