氧化硫硫杆菌脱除硫化氢的研究

摘要

The bioremoval characteristics of hydrogen sulfide by Acidithiobacillus thiooxidans ATCC19377 (A. thiooxidans ATCC19377) were investigated as a function of pH,operation time,gas flow,initial hydrogen sulfide concentration and bacterial biomass dosage (OD600).The removal conditions of hydrogen sulfide were analyzed by the single-factor experiments.Results indicated that the optimum conditions for hydrogen sulfide removal were pH 2.5,operation time 180 min,gas flow 40 mL·min-1,initial hydrogen sulfide concentration 8 g·m -3 and bacterial biomass dosage (OD600)0.40.Establishment of bioremoval conditions could provide theoretic foundation for industrial desulfurization of gas.%研究利用Acidithiobacillus thiooxidans ATCC19377（A. thiooxidans ATCC19377）对硫化氢的脱除条件进行研究，考察pH，反应器运行时间，气流量，初始硫化氢浓度以及细菌生物量即600 nm处吸收值（OD600）对脱除效能的影响。采用单因素实验法对A. thiooxidans脱除硫化氢的条件进行了研究。A. thiooxidans脱除硫化氢的最佳条件为：pH 2.5、反应器运行时间180 min、气体流量40 mL·min-1、初始硫化氢浓度8 g·m-3、细菌生物量即600 nm处吸收值0.40。初步确定了A. thiooxidans脱除硫化氢的条件，为工业气体脱硫提供理论依据。