Abstract

Trivalent chromium classified as one dangerous contaminant that require further treatment. Trivalent chromium levels that exist in surface water and soil increased as many industries utilize chromium as a raw material. Bioremediation is a technique that is widely used to process pollution caused by heavy metals. Bacteria is one of the agent that has been used as trivalent chromium remediator. Bacteria can defend themselves from trivalent chromium exposure. Azotobacter S8, Bacillus subtilis and Pseudomonas putida have been studied and capable to remove trivalent chromium in soil. The highest chromium removal percentage in preliminary test shown by Azotobacter S8 that was equal to 10,53%, followed by Bacillus subtilis by 5.68%. Azotobacter S8 chosen as chromium removal agent in chromium contaminated soil. Chromium concentration of 50mg/L (19mg/Kg) and 100mg/L chromium trichloride (38mg/Kg) used as variable in bioremediation of chromium contaminated soil. Result showed that Azotobacter S8 was capable to remove up to 22.82% for 19mg/Kg chromium contaminated soil and 11.08% for 38mg/Kg chromium contaminated soil.

Original languageEnglish
Pages (from-to)9346-9350
Number of pages5
JournalInternational Journal of Applied Engineering Research
Volume12
Issue number20
Publication statusPublished - 2017

Keywords

  • Azotobacter S8
  • Bacillus subtilis
  • Bioremediation
  • Pseudomonas putida
  • Trivalent chromium

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