Selenium removal using a bacteria cultured reactor packed with alum-impregnated activated alumina

Yuxia Ji, Yi Tin Wang

Research output: Contribution to journalConference articlepeer-review

Abstract

Selenium is a primary pollutant that brings a number of threats to the aquatic lives as well as human beings. Bacterial selenium reduction was observed as an effective way for selenium remediation. However, Se(IV) accumulation may occur during Se(VI) reduction due to the slow reduction rate of Se(IV). In this study, an alum-impregnated activated alumina packed bioreactor cultured with Shigella fergusonii strain TB42616 was applied in order to remove Se(IV) during Se(VI) reduction. Approximately 70% selenium was removed under an hydraulic retention time of 3.1 days with no Se(IV) accumulation observed, indicating that Se(IV) removal was enhanced by the adsorption of the alum-impregnated activated alumina. A 10% more selenium removal was also observed by employing alum-impregnated activated alumina instead of unmodified ones.

Original languageEnglish
Article number116
JournalWorld Congress on Civil, Structural, and Environmental Engineering
DOIs
StatePublished - 2019
Event4th World Congress on Civil, Structural, and Environmental Engineering, CSEE 2019 - Rome, Italy
Duration: Apr 7 2019Apr 9 2019

Bibliographical note

Publisher Copyright:
© 2019, Avestia Publishing.

Keywords

  • Adsorption
  • Packed-bed reactor
  • Reduction
  • Selenium

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Environmental Engineering

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