title: Pressure-drops control strategy in a fixed-bed reactor.
abstract: This paper presents a strategy to control pressure-drops (head loss) in a biofilter designed according to the "Mist-Foam" concept. This concept is based on the mixing of the gaseous substrate and a liquid nutrient solution with an atomization nozzle to generate a mist passing subsequently through a synthetic polyurethane foam. In this type of bioreactor, the microbial growth reduces progressively the empty bed volume of the biofilter and causes an increase in the pressure-drops. This phenomenon can result in a complete clogging of the biofilter. The strategy of pressure-drops control presented here consists of successive interruption of the liquid flow, automatically controlled, resulting in a drying effect of the biomass. Tested during a 160 days experiment, this system has permitted to reduce and stabilize the pressure-drops in a biofilter in which the carrier exhibited a high likelihood of clogging.
authors: Unit of Bioengineering, Catholic University of Louvain, Place Croix du Sud 2/19, B-1348, Louvain-la-Neuve, Belgium. thalasso@mail.cinvestav.mx
authors: F
authors: F
authors: Thalasso
authors: E
authors: E
authors: Razo-Flores
authors: R
authors: R
authors: Ancia
authors: H P
authors: HP
authors: Naveau
authors: E J
authors: EJ
authors: Nyns
mesh_terms: D018533:Biomass; D019149:Bioreactors; D004867:Equipment Design; D005374:Filtration / Q000295:instrumentation; D011140:Polyurethanes; D011143:Polyvinyl Chloride; D011312:Pressure; D014159:Transducers
chemical_list: D011140:Polyurethanes; D011143:Polyvinyl Chloride