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Energy harvesting from acid mine drainage using a highly proton/ion-selective thin polyamide film.
Zhou, Shenghua; Mei, Ying; Yang, Wulin; Jiang, Chenxiao; Guo, Hao; Feng, Shien-Ping; Tang, Chuyang Y.
Afiliación
  • Zhou S; Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong SAR 999077, PR China.
  • Mei Y; Research and Development Center for Watershed Environmental Eco-Engineering, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai 519087, PR China. Electronic address: meiying@bnu.edu.cn.
  • Yang W; College of Environmental Sciences and Engineering, Peking University, Beijing 100871, PR China.
  • Jiang C; School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230052, PR China.
  • Guo H; Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong SAR 999077, PR China; Institute of Environment and Ecology, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, PR China.
  • Feng SP; Department of Mechanical Engineering, The University of Hong Kong, Pokfulam, Hong Kong SAR 999077, PR China; Department of Advanced Design and Systems Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, PR China.
  • Tang CY; Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong SAR 999077, PR China. Electronic address: tangc@hku.hk.
Water Res ; 255: 121530, 2024 May 15.
Article en En | MEDLINE | ID: mdl-38564897
ABSTRACT
A huge chemical potential difference exists between the acid mine drainage (AMD) and the alkaline neutralization solution, which is wasted in the traditional AMD neutralization process. This study reports, for the first time, the harvest of this chemical potential energy through a controlled neutralization of AMD using H+-conductive films. Polyamide films with controllable thickness achieved much higher H+ conductance than a commercially available cation exchange membrane (CEM). Meanwhile, the optimal polyamide film had an excellent H+/Ca2+ selectivity of 63.7, over two orders of magnitude higher than that of the CEM (0.3). The combined advantages of fast proton transport and high proton/ion selectivity greatly enhanced the power generation of the AMD battery. The power density was 3.1 W m-2, which is over one order of magnitude higher than that of the commercial CEM (0.2 W m-2). Our study provides a new sustainable solution to address the environmental issues of AMD while simultaneously enabling clean energy production.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Water Res Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Water Res Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido