Departamento de Ingeniería Química, Tecnología de Alimentos y Tecnologías del Medio Ambiente, Universidad de Cádiz, Cádiz, Spain.
Environ Technol. 2009 Nov;30(12):1273-9. doi: 10.1080/09593330902911713.
Gaseous dimethyl sulphide (DMS) was eliminated in a biotrickling filter with Thiobacillus thioparus grown in polyurethane foam cubes as carrier material. The temperature, pH and empty bed residence time of the gas were maintained at 30 degrees C, 7.0 and 40 s, respectively. In the first 45 days, DMS loads of around 2.0 gDMS m(-3) h(-1) were fed to the BTF to adapt T. thioparus to DMS consumption, attaining close to 100% removal efficiency (RE) on day 46, and the maximum elimination capacity (EC) was 4.0 gDMS m(-3) h(-1) with a RE of 77%. The overall performance was enhanced by adding a nitrogen-enriched (9x) medium but was negatively affected by high superficial liquid velocity (8.18 m h(-1)) and high pH (>7.5). Sulphate concentrations (up to 10 g L(-1)) showed no effect. The system supported shock loads up to 58 gDMS m(-3) h(-1) with increased elimination. With nitrogen-enriched medium and a pH of 7.0 it was possible to increase the EC of DMS up to a maximum of around 23 gDMS m(-3) h(-1) with 65% RE.
气态二甲基硫 (DMS) 在填充有硫杆菌的聚氨酯泡沫块载体的生物滴滤塔中被去除。气体的温度、pH 值和空床停留时间分别保持在 30°C、7.0 和 40 s。在最初的 45 天中，将约 2.0 gDMS m(-3) h(-1)的 DMS 负荷进料到 BTF 中，以使 T. thioparus 适应 DMS 的消耗，在第 46 天达到接近 100%的去除效率 (RE)，最大去除容量 (EC) 为 4.0 gDMS m(-3) h(-1)，RE 为 77%。添加富氮 (9x) 培养基可提高整体性能，但高表面液体速度 (8.18 m h(-1)) 和高 pH 值 (>7.5) 会产生负面影响。硫酸盐浓度（高达 10 g L(-1))）没有影响。该系统可承受高达 58 gDMS m(-3) h(-1)的冲击负荷，去除率增加。在富氮培养基和 pH 值为 7.0 的条件下，有可能将 DMS 的 EC 提高到最高约 23 gDMS m(-3) h(-1)，RE 为 65%。
