[article]
| Titre : |
Bioremediation : A novel approach to waste to waste treatment in surface coatings industry |
| Type de document : |
texte imprimé |
| Auteurs : |
R. J. Patil, Auteur ; P. K. Kamath, Auteur |
| Année de publication : |
1997 |
| Article en page(s) : |
p. 41-52 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Tags : |
'Industrie peinture vernis' 'Eau usée industrielle' 'Epuration eau usée' biologique' Biofiltre |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
In recent times, bioremediation - a biological treatment process for industrial wastes has emerged as a preferred technology in the chemical industry, which has not been exploited to the extent required, by the surface coating industry. This paper attempts to explore bioremediation as a process to degrade wet paint sludge and for the clean up of hazardous solvent residues in liquid as well as gaseous forms. Towards meeting these objectives, five microbial cultures have been isolated by the enrichment and adaptation culture technique from the spray booth environs as well as from the composite soil sample collected from the environs of Rashtriya Chemicals and Fertilizers Plant, located in the near vicinity of Hindustan Petroleum Refinery in Mumbai. The genera of all the five cultures have been identified biochemically, of which, one is an yeast culture and the rest is bacteria. During enrichment, individual hydrocarbon solvents such as benzene/ethyl acetate/mineral turpentine/chloroform/ methyl iso butyl ketone/toluene/butyl cellosolve/triethylamine/xylene/methanol and petrol are used as carbon and energy sources employing Kazuyoshi et al, simple mineral salts medium to support microbial activity. As the clean up of complex sites require a host of microbial flora with metabolic and physiological diversity, the microflora from the booth water was bioaugmented with isolates from the RCF source. The proportion of the culture mix in the consortia played a significant role resulting in enhanced uptake of organic residues, thereby shortening the period of incubation. About 95-99% reduction in COD values were achieved with concomitant reduction in the levels of solvent odours from booth water. Wet paint sludge digestion by the consortia, though, was considerably slow. Significant degradative changes in polyester portion of the binder has been observed as compared to amino resin. Further experimentation on exposure of individual cultures to a host of solvents in vapour/gaseous form has yielded interesting results. |
| Note de contenu : |
- WASTE DISPOSAL
- SOLVENT EMISSIONS
- WHAT IS BIOREMEDIATION AND HOW DOES A BIOFILTER WORK ?
- BIOFILTER
- SCOPE OF THE PRESENT WORK
- SCOUTING FOR MICROORGANISMS - Enrichment and adaptation - Isolation - Selection of cultures for consortia - Identification/characterisation
- MAINTENANCE OF CULTURES
- PREPARATION OF ARTIFICIAL (TAILOR MADE) BOOTH WATER
- ANALYSIS OF SOLVENTS
- INFRARED SPECTROSCOPY
- CULTURE RESPONSE TO SOLVENT VAPOURS - Single solvent-multiple cultures response
- CHEMICAL OXYGEN DEMAND (COD)
- SLUDGE DIGESTION |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13286 |
in PAINTINDIA > Vol. XLVII, N° 6 (06/1997) . - p. 41-52
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