Abstract
Free cyanide at 1 mm decreased the initial sulfate reduction rate of a batch culture of granular sludge from 0.3 to 0.14 mmol d(-1) g(-1) SS (suspended solid), whereas 0.5 mm cyanide had a minimal effect (0.25 mmol d(-1) g(-1) SS). The order of toxicity of metal-complexed cyanides to the sludge was as follows: zinc-complexed cyanide (most toxic) > free cyanide = nickel-complexed cyanide > copper-complexed cyanide (least toxic), which also corresponds well with the order of the stability (dissociation) constants of the metal-cyanide complexes. A consortium degrading cyanide was enriched using nickel cyanide as the sole nitrogen source. This consortium completely removed 0.5 mm of nickel-complexed cyanide under sulfate-reducing conditions in 11 d. Analysis of clone library of 16S rRNA genes shows that the consortium was composed of three major phylotypes including Desulfovibrio.
| Original language | English |
|---|---|
| Pages (from-to) | 1007-1011 |
| Number of pages | 5 |
| Journal | Biotechnology Letters |
| Volume | 26 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - Jun 2004 |
Bibliographical note
Funding Information:This work was supported by a grant for industrial waste recycling from the Korean Ministry of Science and Technology.
Fingerprint
Dive into the research topics of 'Toxicity and degradation of metal-complexed cyanide by a bacterial consortium under sulfate-reducing conditions.'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver