Abstract

There is an increasing demand on recycling of palladium from mining waste streams for purposes of resource retrieval and catalytic application. We introduced the novel H2-based membrane biofilm reactor (MBfR) technology to recover Pd in a more sustainable and economic way. The biotic system successfully recovered almost 100% soluble Pd(II) through reductive immobilization under neutral or acidic pH. Compared to an identically established system but without inoculation, the biotic MBfR produced smaller-size nanoparticulate Pd(0), exhibited higher capacity of Pd recovery capacity, lower vulnerability of Pd(0) leaching under higher loadings, and faster denitrification due to the synergetic enzymatic and catalytic processes. Overall, our study gives a promising example of combined Pd recovery and Pd-based catalysis in a single MBfR system for the future application to the practical treatment of the real mining waste streams.

Original languageEnglish (US)
Title of host publicationBiotech, Biomaterials and Biomedical - TechConnect Briefs 2016
PublisherTechConnect
Pages27-30
Number of pages4
Volume3
ISBN (Electronic)9780997511727
Publication statusPublished - 2016
Event10th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 19th Annual Nanotech Conference and Expo, and the 2016 National SBIR/STTR Conference - Washington, United States
Duration: May 22 2016May 25 2016

Other

Other10th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 19th Annual Nanotech Conference and Expo, and the 2016 National SBIR/STTR Conference
CountryUnited States
CityWashington
Period5/22/165/25/16

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Keywords

  • Autocatalysis
  • Denitrification
  • Enzymatic reduction
  • MBfR
  • Palladium

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Biotechnology
  • Surfaces, Coatings and Films
  • Fuel Technology

Cite this

Zhou, C., Wang, Z., & Rittmann, B. (2016). Biofilm as a versatile stablizer and promoter for Pd nanoparticle (PdNP) recovery and catalytic denitrification. In Biotech, Biomaterials and Biomedical - TechConnect Briefs 2016 (Vol. 3, pp. 27-30). TechConnect.