We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Study on Electrokinetic Remediation of Cadmium-contaminated Soil.
- Authors
Meng SHEN; Yanqiu CHEN; Hui HAN; Pn WEN; Min SHAO; Mingxin WANG; Yushan WAN
- Abstract
In order to improve electrokinetic remediation efficiency of cadmium-contaminated soil, the effects of electric field intensity, remediation time and electrolyte on removal rate of total Cd in Cd-contaminated soil by electrokinetic remediation were studied through the preparation of Cd-contaminated soil and the construction of electrokinetic remediation equipment. The results showed that under the same condition, with the electric field intensity increasing from 2.5 to 3 V/cm, the total Cd removal rate increased by 10.62%, and with the increase of the electric field intensity from 3 to 3.5 V/cm, the removal rate increased by 1.87%; when the remediation time was prolonged from 72 to 96 h, the removal rate of total Cd increased by 6.68%, and with the remediation time prolonged from 96 to 120 h, the removal rate of total Cd increased by 8.75%; and with the remediation time prolonged from 120 to 144 h, the removal rate of total Cd only increased by 1.07%. Compared with citric acid as the electrolyte, the acetic acid group improved the remediation efficiency by 12.14% and the total energy consumption by 62.13%, while the hydrochloric acid group improved the remediation efficiency by 18.04% and the total energy consumption by 187.9%. Comprehensively from total Cd removal rate and energy consumption, the remediation effect was the best under the electric field intensity of 3 V/cm and the electrokinetic time of 120 h with acetic acid as the electrolyte, which achieved a total Cd removal rate of 41.95%.
- Subjects
ELECTROKINETICS; SOIL remediation; SOIL pollution; CADMIUM; ELECTRIC field strength
- Publication
Agricultural Biotechnology (2164-4993), 2019, Vol 8, Issue 1, p135
- ISSN
2164-4993
- Publication type
Article