Sorption of Aniline on Selected Alfisols From the Eastern Coal Region

Effect of pH and potassium chloride concentration on the octanol-water distribution of methylanilines

“…In the introduction, we listed four mechanisms by which organic bases might become associated with particle surfaces: (I) hydrophobic sorption of the neutral molecule, (11) hydrophobic-like sorption of the organic base cation with a dominant anion for counter charge, (111) ion exchange of the organic base cation with a dominant cation on particle surface, and (IV) formation of a covalent bond. The dominant mechanism among these four depends on many factors, particularly the pK, of the base, hydrophobicity of the base, organic carbon content and cationexchange capacity of the sorbent, and the reactivity of the base.…”

“…where the overbar represents a sorbed species; (11) hydrophobic-like sorption of the organic base cation, with counter charge provided by a dominant inorganic counterion such as C1- (9):…”

Adsorption and Kinetic Studies of the Intercalation of Some Organic Compounds onto Na+-Montmorillonite

“…Intercalation of organic compounds with MMT depends on the composition and the structure of the organic molecules, pH, and the metal cations located on the exchange sites of the clay (8)(9)(10)(11). It has been established that the color generated from the reactions of acid clay with aromatic tertiary monoamines is due to their oxidation (12).…”

Sorption of benzidine and 3,3′-dichlorobenzidine to lake sediments. 1. conceptualization and development of a multiparameter model

“…Sorption processes are consequential in assessing the distribution and fate of these and other aromatic amines in the sediment‐water environment. Three important sorption processes for aromatic amines include cation exchange of the organic base with organic cations on silica surfaces or sediment and soil organic matter (SOM), covalent bonding of the organic base with silica surfaces or functional groups on the SOM, and hydrophobic partitioning of the neutral species to SOM [6–11]. The relevance of these factors to sorption and desorption processes is dependent on numerous factors, including the amine acid dissociation constant (p K a ) of the sediment solution, cation exchange capacity (CEC) of the sediment, type and concentration of inorganic cations in the sediment solution, hydrophobicity of the neutral species, organic carbon (OC) content of the sediment, reactivity of functional groups on the SOM, and the time of contact between the compound and the sorbent as described by many researchers [6,10–15].…”

“…The relevance of these factors to sorption and desorption processes is dependent on numerous factors, including the amine acid dissociation constant (pK a ) of the sediment solution, cation exchange capacity (CEC) of the sediment, type and concentration of inorganic cations in the sediment solution, hydrophobicity of the neutral species, organic carbon (OC) * To whom correspondence may be addressed (nymanm@rpi.edu). content of the sediment, reactivity of functional groups on the SOM, and the time of contact between the compound and the sorbent as described by many researchers [6,[10][11][12][13][14][15].…”