Adsorption behaviors of L-arginine from aqueous solutions on a spherical cellulose adsorbent containing the sulfonic group.
An investigation was conducted regarding the adsorption and desorption of L-arginine from aqueous solutions with a new spherical cellulose adsorbent containing the sulfonic group. The adsorption of L-arginine on the adsorbent was time, pH, initial concentration of L-arginine and temperature dependent. The adsorption process followed the Langmuir adsorption isotherm, and was endothermic (DeltaH =24.66 KJ/mol). Almost 100% L-arginine adsorbed on the adsorbent could be recovered with a 2.0 mol/L NH4OH or 2.0 mol/L NH4Cl aqueous solution. After 25 and 40 cycles of adsorption and desorption, the decrease in adsorption capacity reached to 4.9% and 20.3%, respectively.
Liu
Minghua
M
College of Environment and Resources, Fuzhou University, Fuzhou 350002, PR China. mhliu2000@263.net
Huang
Jianhui
J
Deng
Yun
Y
D000327:Adsorption; D001120:Arginine / Q000302:isolation & purification / Q000493:pharmacokinetics*; D002482:Cellulose / Q000737:chemistry* / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D009994:Osmolar Concentration; D012492:Salts / Q000494:pharmacology; D013452:Sulfonium Compounds / Q000737:chemistry / Q000378:metabolism; D013696:Temperature; D013997:Time Factors
D012492:Salts; D013452:Sulfonium Compounds; D002482:Cellulose; D001120:Arginine