| 摘要 |
PROBLEM TO BE SOLVED: To provide a removing method for heavy metal in biopolymer and its device easily and quickly removing the electrolysis inhibiting factors such as deposits, enhancing the electrolysis efficiency, and shortening the cleansing time of the electrode in removal of heavy metals in a scallop cavity by eluting the heavy metal in an acidic solution, electrolytically removing the heavy metal by depositing on the surface of an electrode. SOLUTION: This method elutes the heavy metal in the scallop cavity in an eluting part 17 of an electrolytic tank 11, applying dc voltage between electrodes 13, 14 installed in the acidic solution to deposite the heavy metal ion in the acidic solution on the electrodes. In the case of the depositing efficiency is reduced, the heavy metal ion is removed from the electrode by applying dc voltage which is the reversal to the dc voltage applied in the heavy metal depositing time, between the electrodes 13, 14 in a chlorides solution. |
