Effects of soil moisture and an AC-electric field on the phytoremediation of the Cd-contaminated soil

Phytoremediation enhanced by electric field has been considered a green and low-cost technology for remediating heavy metal-contaminated soils. Soil moisture is a main environmental factor that affects Cd availability in the soil. However, the effects of soil moisture and AC-electric field on the re...

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Veröffentlicht in:Environmental technology. - 1993. - (2024) vom: 17. Juli, Seite 1-11
1. Verfasser: Hu, Juanxin (VerfasserIn)
Weitere Verfasser: Liu, Bo, Xu, Xiaolan, Mao, Zhansheng, Ye, Zhengqian, Liu, Dan, Fang, Xianzhi
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Environmental technology
Schlagworte:Journal Article AC-electric field Cadmium Sedum alfredii Hance Soil moisture Willow
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520 |a Phytoremediation enhanced by electric field has been considered a green and low-cost technology for remediating heavy metal-contaminated soils. Soil moisture is a main environmental factor that affects Cd availability in the soil. However, the effects of soil moisture and AC-electric field on the remediation efficiency of willow (Salix spp.) and S. Alfredii interplanted together remain unclear. In the present study, we designed four treatments (60% soil field capacity, 60% soil field capacity + 0.5 V·cm-1 AC, 100% soil field capacity, 100% soil field capacity + 0.5 V·cm-1 AC) to explore the impacts of soil moisture and AC-electric field on soil Cd availability and Cd accumulation in plants. The results showed that the application of an AC-electric field significantly increased soil Cd availability by 20.9% and 10.8% under both 60% and 100% soil field capacity, respectively. Both high water with and without AC-electric field treatments reduced the proportion of acid-extractable and reducible Cd of soil but increased the proportion of residual Cd. Compared with the control, an AC-electric field with 60% soil field capacity significantly enhanced the biomass of S. Alfredii shoots by 31.2% and increased Cd accumulation in willow leaves and S. Alfredii shoots by 14.6% and 32.3%, respectively. In addition, the biomass production of willow was significantly enhanced but the uptake of Cd by willow was dramatically decreased under an AC-electric field with high water treatment. Therefore, these results suggest that the AC-electric field combined with 60% soil field capacity may be a more promising remediation technique to clean up the Cd-contaminated soil 
650 4 |a Journal Article 
650 4 |a AC-electric field 
650 4 |a Cadmium 
650 4 |a Sedum alfredii Hance 
650 4 |a Soil moisture 
650 4 |a Willow 
700 1 |a Liu, Bo  |e verfasserin  |4 aut 
700 1 |a Xu, Xiaolan  |e verfasserin  |4 aut 
700 1 |a Mao, Zhansheng  |e verfasserin  |4 aut 
700 1 |a Ye, Zhengqian  |e verfasserin  |4 aut 
700 1 |a Liu, Dan  |e verfasserin  |4 aut 
700 1 |a Fang, Xianzhi  |e verfasserin  |4 aut 
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773 1 8 |g year:2024  |g day:17  |g month:07  |g pages:1-11 
856 4 0 |u http://dx.doi.org/10.1080/09593330.2024.2368687  |3 Volltext 
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