Study on the Evaporation of Histidine-Water System

Abstract:

The evaporation rate of histidine-water system was measured and the influence of pressure, temperature, His concentration, pH value of solution and the existence of NH4Cl salt was investigated. The results showed that operating pressure and temperature have significant influence on evaporation rate. Increasing vacuum and temperature could increase the rate. In contrast, the rate value was insensitive to the change of concentration of His, solution pH value and the existence of NH4Cl salt at the operating pressure and temperature. In connection with the operating conditions, properties of the research system and evaporation vessel geometry factors, a new mass transfer coefficient model, based on the dimensional analysis of experimental data, was proposed with relative error of ±10%. Check results showed that agreement between model predictions and experimental data is quite reasonable. The results obtained appear to be used to predict evaporation rate of histidine-water system for industrial reference.

• Periodical: Advanced Materials Research (Volumes 396-398)
• Pages: 685-693
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.396-398.685
• Online since: November 2011
• Authors: Yuan Yuan Han, Lian Jin Weng, Di Geng, Xin Yang
• Keywords: Evaporation Rate, Histidine, Overall Mass Transfer Coefficient

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