Studies on microbial chromate reduction by Pseudomonas sp. in aerobic continuous suspended growth cultures
Journal Article
·
· Biotechnology and Bioengineering; (United States)
- Indian Inst. of Tech., Bombay (India). Centre for Environmental Science and Engineering
Reduction of hexavalent chromium was studied in three bench-scale continuous stirred tank reactors. The inoculum was a culture of Pseudomonas sp., capable of giving 83% to 87% chromate reduction in 72-h batch assays with 60 mg Cr(6) L[sup [minus]1] in synthetic medium. The continuous culture studies were conducted for about 100 days using synthetic feed containing different levels of chromate at 28 to 30 C and pH 6.8. The feed rate was varied over the range 0.5 to 1 L d[sup [minus]1] to obtain hydraulic retention time of 36 to 72 h. Chromate reduction efficiency was 81% to 91% and 100% for influent (Cr(6)) concentrations of 15 to 124 and 5 mg L[sup [minus]1], respectively, with a hydraulic retention time of 72 h.
- OSTI ID:
- 7308940
- Journal Information:
- Biotechnology and Bioengineering; (United States), Journal Name: Biotechnology and Bioengineering; (United States) Vol. 43:6; ISSN BIBIAU; ISSN 0006-3592
- Country of Publication:
- United States
- Language:
- English
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