種別 国内論文 No. 48 年度 2010
論文名 周辺環境下にある微生物による硫化水素の除去
Removal of H2S by Microorganisms from the Ambient Surroundings
著者名 戸井啓夫 林 倶子
掲載誌名 群馬高専レビュー第26号
沼水、湿潤家畜糞、乾燥豚糞塊、牛糞乾燥粉末、土壌等、周辺環境下の試料から細菌群を培養し硫化水素除去能力を検討した。これらのうち、乾燥豚糞由来の菌が完全酸化での顕著な硫化水素除去能力を示した。しかし、除去菌は従属栄養的であり、硫化水素除去菌として一般的に考えられているチオバチルス族である可能性は低い。今後は、二酸化炭素の過剰供給下の独立栄養的条件下でどのような挙動を示すか検討する。
Several bacteria from the ambient surroundings were examined for biological removal of hydrogen sulifide. Dry pig feces was shown to be a good source of the bacteria removing hydrogen sulfide. The bacteria were cultivated in the presence of hydrogen sulfide, and then the capability of removing hydrogen sulfide was examined with apparatuses of aerating process and scrubber process. At higher flow rate, the removal efficiency decreased. The gas-liquid contact time was supposed to be the main reason of the low efficiency. In the aerating process, long time operation resulted in the decrease in the removal efficiency with the decrease in the amount of bacteria. Addition of nutrient recovered the efficiency as well as the amount of living bacteria. Thus, the bacteria removing hydrogen sulfide ware heterotrophic.