Performance of a compost and biochar packed biofilter for gas-phase hydrogen sulfide removal
The main aim of this study was to evaluate the performance of an aerobic biofilter packed with compost for the removal of gas-phase hydrogen sulfide (H2S). After 52 d of operation, the biofilter was re-packed by replacing a certain portion (25%, v/v) of the existing compost with biochar and its performance was tested. The steady and transient performance of the biofilter was evaluated by varying the H2S concentrations from 0.1 to 2.9 g m-3 at an empty bed residence time (EBRT) of 119 and 80 s, respectively. The maximum elimination capacity (ECmax) of the compost and compost + biochar biofilter were ∼19 and 33 g m-3 h-1, respectively, with > 99% removal efficiency at an EBRT of 119 s. The compost biofilter showed a quick response to shock loads and the critical load to the biofilter during the shock loading step was ∼81 g m-3 h-1.
| Main Authors: | , , , , , |
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| Format: | article biblioteca |
| Language: | eng |
| Subjects: | P06 - Sources d'énergie renouvelable, charbon de bois, filtre, compost, gazéification, http://aims.fao.org/aos/agrovoc/c_1503, http://aims.fao.org/aos/agrovoc/c_24839, http://aims.fao.org/aos/agrovoc/c_1795, http://aims.fao.org/aos/agrovoc/c_34000, |
| Online Access: | http://agritrop.cirad.fr/589489/ http://agritrop.cirad.fr/589489/7/1-s2.0-S0960852418315852-main.pdf |
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