Laboratory scale biological trickling filters and three-phase airlift bioreactors have been studied for the elimination of methylene chloride (or dichloromethane) vapors from waste air, and the results used herein for the design of small industrial-scale reactors. The conditions chosen for scale-up were an air flow rate of 100 m3 h-1, a methylene chloride inlet concentration of 2 g m-3, and a t...

The purpose of this study was to evaluate the performance laboratory-scale biotrickling filters (BTFs) packed with composite filler and pine bark under different operating conditions in purifying mixed gas containing H2S NH3. prepared modified activated carbon loaded functional microbes, using microbial immobilization technology combined a nutrient sustained-release filler. results showed that ...

Methane anthropogenic diffuse emissions (below 1 % vv) are important, with a significant contribution of the waste management sector (estimatedaround 21%). Since biological alternatives are especially promising for the treatment of a wide number of gaseous pollutants, a biotrickling filter packed with polyurethane foam was employed to study the abatement of methane (0.2 – 1 % vv) in air emissio...

The aim of this paper was to evaluate the performance of biotrickling filters (BTFs) for treating low concentrations of dimethyl disulfide (DMDS), using different bacterial consortia adapted to consume reduced sulfur compounds under alkaline (pH ≈ 10) or neutral (pH ≈ 7) conditions. Solubility experiments indicated that the partition of DMDS in neutral and alkaline mineral media was similar to ...

Unpleasant odor emissions have traditionally occupied an important role in environmental concern. In this paper, twin biotrickling filters (BTFs) packed with different packing materials, seeded with Bacillus cereus GIGAN2, were successfully constructed to purify gaseous dimethyl disulfide (DMDS). The maifanite-packed BTF showed superior biodegradation capability to the ceramic-packed counterpar...

Biotrickling filters are one of the most widely used biological technologies to perform biogas desulfurization. Their industrial application has been hampered due difficulty achieve a robust and reliable operation this bioreactor. Specifically, biotrickling process performance is affected mostly by fluctuations in hydrogen sulfide (H2S) loading rate changes gas inlet concentration or volumetric...