STUDY ON THE EFFECT OF ELECTROMIGRATION ON PHYTOEXTRACTION CONTAMINATED SOIL RADIOCESIUM-134 USING SPINACH PLANT (AMARANTHUS DUBIUS)

• Main Author: MULYAWAN RACHMAT NIM : 25311005, BUDHI
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/21463
• Institution: Institut Teknologi Bandung

Radiocesium is one of radionuclides that can be released into the environment <br /> <br /> <br /> due to the occurrence of a nuclear reactor accident or other radioactive sources . <br /> <br /> <br /> Radiocesium fallout to the ground most of will be on the clay fraction, and <br /> <br /> <br /> another is located on ground water. The strong bond radiocesium in soil particles <br /> <br /> <br /> causes the recovery process becomes more difficult. One of the attempts to <br /> <br /> <br /> remediate the radiocesium contaminated soil with phytoextraction technique. In <br /> <br /> <br /> some studies only a small portion of radiocesium can be taken up by the plant, the <br /> <br /> <br /> rest stay on the ground. To facilitate plants radiocesium uptake, electromigration <br /> <br /> <br /> then used as an alternative technique. Electromigration aims to release the clay <br /> <br /> <br /> fraction radiocesium from soil to water that would be more easily absorbed by <br /> <br /> <br /> plant roots. This research studied the use of combined methods of soil <br /> <br /> <br /> radiocesium phytoextraction assisted by electromigration. In contaminated soils <br /> <br /> <br /> by Cesium-134 as 6,97±1,22Bq/g remediation performed using spinach plants <br /> <br /> <br /> (Amaranthus dubius) with two kinds of treatment, regular phytoextraction and <br /> <br /> <br /> electromigration assisted phytoextraction with an direct current electric (DC) <br /> <br /> <br /> 12V through pair of stainless steel electrodes. The results of phytoextraction <br /> <br /> <br /> assisted with electromigration accumulation of 134Cs is 209.89 Bq, and FT <br /> <br /> <br /> (transfer factor) of 0.31± 0.10. While in unassisted electromigration <br /> <br /> <br /> phytoextraction results in accumulation 331.75 Bq of 134Cs with FT 0.35±0.15. In <br /> <br /> <br /> this study, application of electrical fields on phytoextraction does not enhanced <br /> <br /> <br /> accumulation of Radiocesium-134.