원문정보
초록
영어
Hybrid lime addition/capacitive deionization process is a simple, efficient method for isolating sugars from the mixture of glucose, xylose, acetic acid, and sulfuric acid, which are the typical products from the biomass hydrolysis. In this study, we optimized the important process parameters of hybrid process to isolate sugars. In the lime addition process, the optimal lime type, lime/sulfuric acid molar ratio, agitation speed, and reaction time for removal of sulfuric acid were CaCO3, 1:1, 500 rpm, and 8 min, respectively. For the CDI process, the optimal voltage was 1.2 V, the flow rate was 20 mL/min and the efficiency of the acid removal rate increased as the initial acetic acid concentration decreased. The developed hybrid process was able to remove 98.08% of sulfuric acid and 76.97% of acetic acid from the mixture of glucose, xylose, acetic acid, and sulfuric acid. It was able to recover most of the sugar (>99%) at high purity (97.53%).