Gold biorecovery from plating waste by magnetotactic bacterium, Magnetospirillum magneticum AMB-1

Masayoshi Tanaka, Masaya Kawase, Tsuyoshi Tanaka, Tadashi Matsunaga

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Magnetotactic bacteria are a unique species of bacteria, commonly recognized by the presence of magnetic particles within them. These intracellular, nanosized magnetic particles enable the bacteria to migrate and be manipulated by magnetic force. To date, magnetotactic bacteria have been widely researched and implemented in various biotechnology based applications. In this study, as an extension to its applications, the magnetotactic bacterium, Magnetospirillum magneticum AMB-1, was applied in the microbial recovery of gold from plating waste. M. magneticum AMB-1 successfully precipitated approximately 42% and 100% of gold from growth medium containing 10 μgold and from a mixture of plating waste/growth medium containing 0.4 μgold, respectively. These observations and results strongly suggests that an important advancement in biorecovery of rare metals and bioremediation of toxic metals was achieved in which the application of whole cell bacteria, and direct precipitation of metals from plating waste using magnetotactic bacteria was performed for the first time.

Original languageEnglish
Title of host publicationMaterials Science of Water Purification
Pages15-20
Number of pages6
Volume1169
Publication statusPublished - 2009
Externally publishedYes
Event2009 MRS Spring Meeting - San Francisco, CA, United States
Duration: 2009 Apr 142009 Apr 17

Other

Other2009 MRS Spring Meeting
CountryUnited States
CitySan Francisco, CA
Period09/4/1409/4/17

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Tanaka, M., Kawase, M., Tanaka, T., & Matsunaga, T. (2009). Gold biorecovery from plating waste by magnetotactic bacterium, Magnetospirillum magneticum AMB-1. In Materials Science of Water Purification (Vol. 1169, pp. 15-20)