Abstract
A lab-scale biofilter with fungal growth has been studied to investigate the removal of gas-phase hydrogen sulfide.
The biofilter inoculated initially with the aerobic activated sludge was operated for 100 days under acidic condition,and 0.36 L/d of the buffered nutrient with 0.05 g/L Chloramphenicol and Gentamicin was injected into the biofilter.
The critical removal capacity of hydrogen sulfide was up to 22 g/m3/h. The pH of the effluent liquid was stableat pH 1.5-2, corresponding to the volatile suspended solids of 20-50 mg/L. In microbial analysis through the platecount method, it was found that fungi were dominant over bacteria. The fungi isolated from biomass in the bilfilterwere identified as Acidomyces acidophilus and Aspergillus fumigatus. Sulfate and thiosulfate were also detectedin liquid samples, as a result of the biological sulfur oxidation in the biofilter bed. For the analysis of sulfur massbalance, the accumulated mass of sulfate and thiosulfate reached up to 67.5% of inlet sulfur. Sulfur was alsodetected on the biomass collected from the biofilter through Scanning electron microscopy/Energy dispersive Xrayspectroscopy.
The biofilter inoculated initially with the aerobic activated sludge was operated for 100 days under acidic condition,and 0.36 L/d of the buffered nutrient with 0.05 g/L Chloramphenicol and Gentamicin was injected into the biofilter.
The critical removal capacity of hydrogen sulfide was up to 22 g/m3/h. The pH of the effluent liquid was stableat pH 1.5-2, corresponding to the volatile suspended solids of 20-50 mg/L. In microbial analysis through the platecount method, it was found that fungi were dominant over bacteria. The fungi isolated from biomass in the bilfilterwere identified as Acidomyces acidophilus and Aspergillus fumigatus. Sulfate and thiosulfate were also detectedin liquid samples, as a result of the biological sulfur oxidation in the biofilter bed. For the analysis of sulfur massbalance, the accumulated mass of sulfate and thiosulfate reached up to 67.5% of inlet sulfur. Sulfur was alsodetected on the biomass collected from the biofilter through Scanning electron microscopy/Energy dispersive Xrayspectroscopy.
| Translated title of the contribution | Application of fungal cultivation in biofiltration systems for hydrogen sulfide removal |
|---|---|
| Original language | Korean |
| Pages (from-to) | 215-233 |
| Number of pages | 9 |
| Journal | 실내환경 및 냄새 학회지 |
| Volume | 17 |
| Issue number | 3 |
| DOIs | |
| State | Published - Sep 2018 |