Kinetic and equilibrium study of the chromatographic separation of glycine and ammonium

Abstract

Background: Glycine is extensively applied in the field of food, medicine, agrochemistry, etc. It is usually commercially produced by the chemosynthesis method, which generates large amounts of by-product ammonium chloride. Methods: In this paper, the separation of glycine and ammonium chloride was performed with chromatographic column, and deionized water as eluent. The adsorption equilibrium constant K of glycine and ammonium chloride was evaluated by frontal analysis. Based on the equilibrium-dispersive model and a linear driving force of chromatography, the overall mass transfer coefficient k m , axial dispersion coefficient D L , and bed voidage ε t of the column were obtained by moment analysis.

Biobutanol production from sugarcane bagasse by Clostridium beijerinckii strains

“…Various types of lignocellulosic agricultural residues have been studied for biobutanol production, such as corn stover , corn fiber , cassava bagasse , barley straw , rice straw , and wheat straw . Sugarcane bagasse (SCB) being the main by‐product of cane sugar industry with a typical composition of cellulose (38.4%), hemicellulose (23.2%), and lignin (25%) has much potential.…”

“…In many cases, the hydrolysates were either further concentrated or supplemented with extra carbon source such as glucose. In most cases, expensive nutrient supplements such as yeast extract and vitamins are used to support microbial growth . All these practices add to the cost of cellulosic butanol production.…”