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Biological purification of exhaust air containing toluene vapor in a filter-bed reactor

โœ Scribed by L Bibeau; M. Heltz; K. Kiared; A. Leroux; R. Brzezinski; G. Viel


Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
936 KB
Volume
75
Category
Article
ISSN
0008-4034

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โœฆ Synopsis


Experiments during a period of 93 days are reported on the treatment of waste air containing toluene vapor using a laboratory scale biofilter system packed with peat inoculated with specific florae (Pseudomonas type) and intermittently humidified with a nutrient solution necessary for the survival of the micro-organisms. Design and operation parameters were regularly measured in order to check the performance of the biodegradation process.

Under pseudo-steady state conditions, a maximum elimination capacity of 70 g/m3.h was obtained for an inlet load of 190 g/m3.h. Elimination capacity data obtained agreed well with the predictions of two recognized zero order kinetic models. Also, the biofilm thickness as predicted from the Ottengraf and van den Oever model (1983) was around Imm.

Une Ctude de traitement de I'air contenant des vapeurs de tolukne a CtC rCalisCe, 51 1'Cchelle laboratoue sur une pkriode de 93 jours, dans un biofiltre garni de tourbe inoculee avec des souches spicifiques (type Pseudomonas) et sCquentiellement hurnidifik par une solution nutritive nCcessaire 51 la survie des micro-organismes. Certains parambtres de conception et d'optration ont ttC rtgulikrement mesurCs afin d'Cvaluer les performances de 1'Cpuration.

Une capacitt maximale d'klimination de 70 g/m3.h a CtC obtenue en rCgime pseudo-stationnaire pour une charge h I'entrCe de 190 g/m3.h. Les rtsultats relatifs 51 la capacitk d'klimination montrent un bon accord avec deux modbles de la litttrature qui supposent une cinCtique d'ordre zCro. Une Cpaisseur de biofilm d'environ Imm a CtC estimte par le modble d'ottengraf et van den Oever (1 983).


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โœ Frans J. Weber; Sybe Hartmans ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 749 KB

Removal of organic compounds like toluene from waste gases with a trickle-bed reactor can result in clogging of the reactor due to the formation of an excessive amount of biomass. We therefore limited the amount of nutrients available for growth, t o prevent clogging of the reactor. As a consequence