Kinetic study of CO2 with various amino acid salts in aqueous solution

A study towards the kinetics of CO2 with several aqueous salts of amino acids was performed at a temperature of 298 K. Absorption rate experiments were carried out in the pseudo-first-order regime, enabling the determination of the kinetic rate constant from the flux. In a preliminary screening at a concentration of 0.5 moL-1 the potassium salts of 6-aminohexanoic acid, β-alanine, l-arginine, l-glutamic acid, dl-methionine, l-proline and sarcosine were investigated. Based on the results of this screening the aqueous potassium salts of sarcosine and proline were considered to be the most promising solvents. For these solvents, and the corresponding lithium solvents, the physical distribution coefficient of N2O was determined for various temperatures and concentrations. Subsequently for these same solvents the kinetics were more extensively studied at 298 K in which the concentration of the amino acid salts was varied between 0.5 and 3moL-1

Kinetic study of CO2 with various amino acid salts in aqueous solution

A study towards the kinetics of CO2 with several aqueous salts of amino acids was performed at a temperature of 298 K. Absorption rate experiments were carried out in the pseudo-first-order regime, enabling the determination of the kinetic rate constant from the flux. In a preliminary screening at a concentration of 0.5 mol L- 1 the potassium salts of 6-aminohexanoic acid, β-alanine, l-arginine, l-glutamic acid, dl-methionine, l-proline and sarcosine were investigated. Based on the results of this screening the aqueous potassium salts of sarcosine and proline were considered to be the most promising solvents. For these solvents, and the corresponding lithium solvents, the physical distribution coefficient of N2 O was determined for various temperatures and concentrations. Subsequently for these same solvents the kinetics were more extensively studied at 298 K in which the concentration of the amino acid salts was varied between 0.5 and 3 mol L- 1.

The state of the art and the fate of the earth

A recent review by Nevin of Jonathan Schell's The Fate of the Earth applies a “behavioral perspective” to the problem of species survival in a nuclear age. It is suggested that no perspective, in this context as in others where less is at stake, should dismiss prematurely some useful ideas from other perspectives. A sampling of “cognitive” concepts is offered to illustrate what actions, aimed at resisting species extinction, might follow from them—not instead of, but in addition to, the guidelines for action a behavioral perspective provides