Remediation of cadmium contaminated soil using electrokinetic-phytoremediation system with rotary switching electrodes.

Publisher: Kluwer Academic Publishers Country of Publication: Netherlands NLM ID: 8903118 Publication Model: Electronic Cited Medium: Internet ISSN: 1573-2983 (Electronic) Linking ISSN: 02694042 NLM ISO Abbreviation: Environ Geochem Health Subsets: MEDLINE

Publication: 1999- : Dordrecht : Kluwer Academic Publishers
Original Publication: Kew, Surrey : Science and Technology Letters, 1985-

Soil Pollutants*/metabolism ; Cadmium*/metabolism ; Cadmium*/chemistry ; Biodegradation, Environmental* ; Electrodes* ; Lolium*/metabolism; Environmental Restoration and Remediation/methods ; Soil/chemistry

Considering both electrokinetic remediation and phytoremediation have limitations, an electrokinetic phytoremediation (EP) system was constructed to obtain efficient and environmentally friendly remediation results. This study indicates that the electric field can promote the absorption of Cd by ryegrass with little impact on soil physicochemical properties under the condition of rotary switching electrodes, and the accumulation of Cd in the aboveground and underground parts of ryegrass increased by 145.2% and 93.7%, respectively. The DC electric field combined with ryegrass under rotary switching electrode mode proved to be the optimal condition for the remediation of Cd contaminated soil with a remediation efficiency of 66.7%. Moreover, the rotary switching of the electrodes alleviated the suppression of the growth of ryegrass by the DC electric field. During the EP remediation process, the electric field promoted the transformation of the residue state of Cd to the other forms, which accelerated the desorption rate of Cd from the soil and facilitated the migration of Cd into plants. In conclusion, EP is a green and efficient remediation technology for heavy metal contaminated soil with good application prospects.
(© 2024. The Author(s), under exclusive licence to Springer Nature B.V.)

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PKJ2023-C09 Pudong New Area Science and Technology Development Foundation of Shanghai; PKJ2023-C09 Pudong New Area Science and Technology Development Foundation of Shanghai; PKJ2023-C09 Pudong New Area Science and Technology Development Foundation of Shanghai; PKJ2023-C09 Pudong New Area Science and Technology Development Foundation of Shanghai; PKJ2023-C09 Pudong New Area Science and Technology Development Foundation of Shanghai; PKJ2023-C09 Pudong New Area Science and Technology Development Foundation of Shanghai; PKJ2023-C09 Pudong New Area Science and Technology Development Foundation of Shanghai

Keywords: Cadmium; Electrokinetic phytoremediation; Heavy metal; Rotary switching electrode; Ryegrass

0 (Soil Pollutants)
00BH33GNGH (Cadmium)
0 (Soil)

Date Created: 20240821 Date Completed: 20240821 Latest Revision: 20240928

20240928

10.1007/s10653-024-02162-5

39167250