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Adsorption of Aromatic Compounds on Activated Carbons from Lignin: Kinetic Study

“…Some of the most widespread activated carbons uses for liquid-phase adsorption are those in water treatment for the removal of color, odors, metals, pesticides, and organic pollutants from aqueous solutions. − In addition, ACs are widely used for separations in the chemical, petroleum, and pharmaceutical industries, as well as in the removal of pollutants from air and industrial gaseous streams. Wastewaters from industries include a broad range of toxic organic compounds that are persistent in the environment due to their low biodegradability.…”

Effect of Si/Al Ratio in the Faujasite Structure on Adsorption of Methane and Nitrogen: A Molecular Dynamics Study

“…Adsorptions of N 2 and CH 4 were calculated using the grand canonical ensemble ( µVT ), in which the temperature, volume, and chemical potential were kept constant 35. It is assumed that the framework is in contact with an infinite source with given temperature and pressure 36. The partial pressure required to evaluate the chemical potential of adsorbed molecules was calculated by the Peng‐Robinson equation‐of‐state 35.…”

β-Phenylethylamines and the isoquinoline alkaloids (July 1999 to June 2000)

“…110 A patent for the extraction of berberine from plants has been published. 112 The 15 N NMR spectra of several tetrahydroberberines, 55 and the influence of surface oxygen on the adsorption of alkaloids of this group on charcoal 113 have been studied and an X-ray crystallographic study has confirmed the absolute and relative stereochemistry of cyclanoline bromide 84. 114 Berberine has been shown to react with sodium hydroxide to give 8-oxoberberine 86 and dihydroberberine 87 as a result of Cannizzaro reaction of the initially formed aldehyde 85; a small amount of the alcohol 88 was also detected.…”