| Titre : |
Biosensor based toxicity dissection of tannery and associated environmental samples |
| Type de document : |
texte imprimé |
| Auteurs : |
Mwinyikione Mwinyihija, Auteur ; Ken Killham, Auteur ; Andy Meharg, Auteur ; Norval J. C. Strachan, Auteur |
| Année de publication : |
2005 |
| Article en page(s) : |
p. 481-490 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Kenyan tannery and associated environmental samples were selected for ecotoxicological assessment. A tool-kit of techniques was developed, including whole cell biosensor and chemical assays. A luminescence based bacterialbiosensor (Escherichia coli HB101 pUCD607) (via a multi-copy plasmid) was used for toxicity assessment. Samples were manipulated prior to biosensor interrogation to identify the nature of the toxic contaminants. Untreated samples (before any manipulations) showed a strong toxic effect at the discharge point in comparison to other sampling points. Sparging was used to identify toxicity associated with volatile organics. The toxicity of contaminants, removed by treatment with activated charcoal, was identified for all the sampling points except for those upstream of effluent discharges. Filtration identified toxicity associated with suspended solids. Changes in availability of toxic contaminants due to pH adjustment of most samples from the tannery effluent treatment pits were also associated with the extreme pH values (4.0 and 8.0). The approach used has highlighted the complexity of toxic pollutants in effluent from the tanning industry. Dissection of toxicity points suggests possible remediation strategies for effluents from the tanning industry. |
| En ligne : |
https://drive.google.com/file/d/1tSXwKXKxD4umwajqoDTz34AvwpaKDSt0/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4049 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. C, N° 12 (12/2005) . - p. 481-490
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