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A primary battery for efficient cadmium contamination remediation and electricity generation
- Source :
- Fundamental Research, Vol 4, Iss 4, Pp 868-881 (2024)
- Publication Year :
- 2024
- Publisher :
- KeAi Communications Co. Ltd., 2024.
-
Abstract
- In this work, two kinds of primary batteries, both of which included a Zn anode, C rod cathode, copper wire and electrolyte composed of Cd2+-contaminated water or soil, were constructed in the first attempt to both remove Cd2+ and generate electricity. Unlike traditional technologies such as electrokinetic remediation with high energy consumption, this technology could realize Cd2+ migration to aggregation and solidification and generate energy at the same time through simultaneous galvanic reactions. The passive surface of Zn and C was proven via electrochemical measurements to be porous to maintain the relatively active galvanic reactions for continuous Cd2+ precipitation. Cd2+ RE (removal efficiency) and electricity generation were investigated under different conditions, based on which two empirical models were established to predict them successfully. In soil, KCl was added to desorb Cd2+ from soil colloids to promote Cd2+ removal. These systems were also proven to remove Cd2+ efficiently when their effects on plants, zebrafish, and the soil bacterial community were tested. LEDs could be lit for days by utilizing the electricity produced herein. This work provides a novel, green, and low-cost route to remediate Cd2+ contamination and generate electricity simultaneously, which is of extensive practical significance in the environmental and energy fields.
Details
- Language :
- English
- ISSN :
- 26673258
- Volume :
- 4
- Issue :
- 4
- Database :
- Directory of Open Access Journals
- Journal :
- Fundamental Research
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.b9dd55e659ff4409a042f4d5eb8e638f
- Document Type :
- article
- Full Text :
- https://doi.org/10.1016/j.fmre.2023.03.001