Foam Fractionation of Mercury Ion Using Biosurfactant

• Main Authors: Hung-tsan Liu, 劉宏燦
• Other Authors: Chien-Yen Chen
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/47355018854187027125

碩士 === 國立中正大學 === 地震研究所暨應用地球物理研究所 === 97 === The purpose of this study is to investigate the effect of the surfactant and other operating factors on foam fractionation for the treatment of wastewater containing mercury ions in aqueous solution. Foam fractionation was successful in the removal of mercury ion from aqueous solutions in presence of different surfactants such as sodium dodecyl sulfonate (SDS), polysorbate (Tween-80) and surfactin (Biosurfactant). Experimental results showed that the biosurfactant, surfactin has been observed to have the best mercury enrichment and recovery. The efficiency of mercury removal with the biosurfactant correlated with critical micelle concentration (CMC), pH, airflow rate, foam volume as well as the concentration of mercury. The recovery was found to decrease with the increase of the mercury concentration. Foam separation of mercury with biosurfactant was shown to be a feasible process to achieve a high degree of mercury removal over a broad operational range.