Biofiltration using peat and a nutritional synthetic packing material: influence of the packing configuration on H2S removal - Université de Nantes Accéder directement au contenu
Article Dans Une Revue Environmental Technology Année : 2013

Biofiltration using peat and a nutritional synthetic packing material: influence of the packing configuration on H2S removal

Résumé

This study aims to evaluate the feasibility of using a nutritional synthetic material (UP20) combined with fibrous peat as a packing material in treating H2S (up to 280ppmv). Three identical laboratory-scale biofilters with different packing material configurations (peat only; peat+UP20 in a mixture; peat+UP20 in two layers) were used to determine the biofilter performances. The superficial velocity of the polluted gas on each biofilter was 65m/h (gas flow rate 0.5Nm(3)/h) corresponding to an empty bed residence time=57 s. Variations in elimination capacity, removal efficiency, temperature and pH were tracked during 111 d. A removal efficiency of 100% was obtained for loading rates up to 6g/m(3)/h for the biofilter filled with 100% peat, and up to 10g/m(3)/h for both biofilters using peat complemented with UP20. For higher loading rates (up to 25.5g/m(3)/h), the configuration of peat-UP20 in a mixture provided the best removal efficiencies (around 80% compared to 65% for the configuration of peat-UP20 in two layers and 60% for peat only). Microbial characterization highlighted that peat is able to provide sulfide-oxidizing bacteria. Through kinetic analysis (Ottengraf and Michaelis-Menten models were applied), it appeared that the configuration peat-UP20 in two layers (80/20 v/v) did not show significant improvement compared with peat alone. Although the configuration of peat-UP20 in a mixture (80/20 v/v) offered a real advantage in improving H2S treatment, it was shown that this benefit was related to the bed configuration rather than the nutritional properties of UP20.
Fichier principal
Vignette du fichier
hal-00877619.pdf (346.16 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00877619 , version 1 (01-02-2023)

Identifiants

Citer

Eric Dumont, Flavia da Silva Cabral, Pierre Le Cloirec, Yves Andres. Biofiltration using peat and a nutritional synthetic packing material: influence of the packing configuration on H2S removal. Environmental Technology, 2013, 34 (9), pp.1123-1129. ⟨10.1080/09593330.2012.736691⟩. ⟨hal-00877619⟩
258 Consultations
30 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More