Your browser doesn't support javascript.
loading
Flow battery electrolyte from carbon black incineration fly ash: A feasibility study of an environment friendly disposal process.
Li, He; Huang, Songpeng; Yao, Zhiyi; Wang, Qing; Wang, Chi-Hwa.
Afiliação
  • Li H; Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585, Singapore.
  • Huang S; Department of Material Science and Engineering, National University of Singapore, 117575, Singapore.
  • Yao Z; Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585, Singapore.
  • Wang Q; Department of Material Science and Engineering, National University of Singapore, 117575, Singapore.
  • Wang CH; Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585, Singapore. Electronic address: chewch@nus.edu.sg.
Waste Manag ; 133: 28-36, 2021 Sep.
Article em En | MEDLINE | ID: mdl-34364150
Fly ash represents a kind of finely divided solid waste which is derived from industrial or municipal waste incineration and contains various metal elements. In this work, we focus on the waste-to-resource conversion of one fly ash which is generated from the incineration of petroleum coke gasification waste. The leaching behaviors and waste conversion of this fly ash to value-added products under different treatments were investigated. The majority of the identified elements in leachate demonstrated different leaching patterns as the species of leached element from fly ashes depend on the chemical properties of leaching agents. Moreover, A pathway is developed to harvest toxic vanadium from this fly ash, and the vanadium-containing leachate can be further converted into electrolyte for vanadium redox flow battery (VRFB). The vanadium electrolyte was synthesized by using fly ash leachate as the resource materials in two different ways afterwards: reducing vanadium in the leachate directly (electrolyte from leachate) and synthesizing V2O5 from leachate as the intermediate product (electrolyte from leachate-derived V2O5). The electrochemical behavior and performance of these electrolytes were analyzed to investigate the feasibility of these approaches. The measurement of electrochemical performance proves that the electrolyte from leachate-derived V2O5 is comparable to the standard electrolyte in terms of columbic efficiency (CE), energy efficiency (EE) and stability. Based on experimental results, our research provides a potential solution for the establishment of vanadium flow battery plant. Cost-benefit analysis proves that the payback period of electrolyte synthesized from alkaline leachate and leachate-derived V2O5 is 2.1 years and 1.0 year, respectively.
Assuntos
Palavras-chave

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Eliminação de Resíduos / Metais Pesados Idioma: En Revista: Waste Manag Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Singapura

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Eliminação de Resíduos / Metais Pesados Idioma: En Revista: Waste Manag Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Singapura