Enhanced migration and degradation of nitrobenzene in heterogeneous porous media using pulsed direct current electrical resistance heating with hydraulic circulation DOI Creative Commons

Di Zheng,

Zhuning Geng,

Runlei Ge

et al.

Journal of Hazardous Materials Letters, Journal Year: 2024, Volume and Issue: 5, P. 100113 - 100113

Published: May 22, 2024

Electrical resistance heating (ERH) is a promising in-situ technology for heterogeneous organic contaminated site remediation, yet may have low efficiency when treating semi-volatile contaminant (SVOC) of relatively high boiling point. Herein, we chose nitrobenzene as representative SVOC, and proposed an ERH system powered by pulsed direct current (PDC) with simple hydraulic circulation improved remediation in media. The PDC-ERH showed overall improvement performance energy efficiency, well migration removal nitrobenzene. This new the uniformity PDC achieved temperature increase ∼15°C compared to that using conventional alternating (AC) same voltage. Nitrobenzene out permeability zone (LPZ) was intensified dual effects heat-induced diffusion enhancement electric field-induced electroosmotic flow, while subsequent enhanced electrochemical degradation volatilization. After 96 h, has higher from LPZ (> 97.1%) AC (84.0%–95.9%). These results suggest coupled approach remediation.

Language: Английский

Intensifying steam methane reforming and water-gas shift in tandem via rapid pulsed Joule heating DOI

Rucha Railkar,

Yeonsu Kwak, Dionisios G. Vlachos

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162700 - 162700

Published: April 1, 2025

Language: Английский

Citations

0
Regulating the ion migration pathways to enhance Joule heating effect and dense nonaqueous phase liquid removal using pulsed direct current DOI
Di Zheng, Zhen Qi, Zhuning Geng

et al.

Journal of Cleaner Production, Journal Year: 2025, Volume and Issue: unknown, P. 145586 - 145586

Published: April 1, 2025

Language: Английский

Citations

0
Direct current driven persulfate delivery and activation for heterogeneous porous media remediation: Coupling effects of electric-thermal-chemical-flow fields DOI
Zhuning Geng,

Di Zheng,

Zhen Qi

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 479, P. 135743 - 135743

Published: Sept. 5, 2024

Language: Английский

Citations

2
Enhanced migration and degradation of nitrobenzene in heterogeneous porous media using pulsed direct current electrical resistance heating with hydraulic circulation DOI Creative Commons

Di Zheng,

Zhuning Geng,

Runlei Ge

et al.

Journal of Hazardous Materials Letters, Journal Year: 2024, Volume and Issue: 5, P. 100113 - 100113

Published: May 22, 2024

Electrical resistance heating (ERH) is a promising in-situ technology for heterogeneous organic contaminated site remediation, yet may have low efficiency when treating semi-volatile contaminant (SVOC) of relatively high boiling point. Herein, we chose nitrobenzene as representative SVOC, and proposed an ERH system powered by pulsed direct current (PDC) with simple hydraulic circulation improved remediation in media. The PDC-ERH showed overall improvement performance energy efficiency, well migration removal nitrobenzene. This new the uniformity PDC achieved temperature increase ∼15°C compared to that using conventional alternating (AC) same voltage. Nitrobenzene out permeability zone (LPZ) was intensified dual effects heat-induced diffusion enhancement electric field-induced electroosmotic flow, while subsequent enhanced electrochemical degradation volatilization. After 96 h, has higher from LPZ (> 97.1%) AC (84.0%–95.9%). These results suggest coupled approach remediation.

Language: Английский

Citations

1