Effect of electrokinetic on the movement of Bromine in an aquifer

• Main Authors: Tsai, Chang-Hsien, 蔡昌賢
• Other Authors: Yeh. Kuei-Jyum
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/61069411146029893486

碩士 === 國立屏東科技大學 === 環境工程與科學系所 === 104 === Nowadays, there are many remediation technologies such as Soil Vapor Extraction (SVE), Air Sparging (AS), Chemical Oxidation, Electrokinetic remediation (EK), and etc. The soil and groundwater remediation processes are often less effective in the aquifer of low permeabilty. The electrokinetic can be applied on both saturated and unsaturated subsurfaces. This study tested the movement of bromide ion in an aquifer under the influence of electrokinetic force. Four 2-inch monitoring wells (depths of about seven meters) and one 1-inch well were installed. Bromine salt was added to one well and then electrokinetic was applied. The results show that bromine ion appears in the monitor well one meter away from the injection well. Even though the direction of groundwater flow is perpendicular to the electrokinetic force, after applying the same operating conditions for twenty days, the concentration of bromine ion in the cathode wells is 50% higher than that in the anode. Therefore, it is concluded that electrokinetic still can enhance the movement of bromide ion even its movement direction is against the hydrological flow. Higher voltage or current results in the increase of bromine movement. It is suggested that transmission efficiently can be further improved by installing more wells or electrode rods. This study proves that electrokinetic enhances the movement of Bromine in an aquifer.