University of La Coruña, Dpt. of Chemical Engineering, Campus da Zapateira, Rua da Fraga, 10, 15008 La Coruña, Spain.
University of La Coruña, Dpt. of Chemical Engineering, Campus da Zapateira, Rua da Fraga, 10, 15008 La Coruña, Spain.
J Hazard Mater. 2010 Dec 15;184(1-3):204-214. doi: 10.1016/j.jhazmat.2010.08.024.
The biodegradation performance of a biofilter, inoculated with the fungus Sporothrix variecibatus, to treat gas-phase styrene and acetone mixtures under steady-state and transient conditions was evaluated. Experiments were carried out by varying the gas-flow rates (0.05-0.4m(3)h(-1)), leading to empty bed residence times as low as 17.1s, and by changing the concentrations of gas-phase styrene (0.01-6.3 g m(-3)) and acetone (0.01-8.9 g m(-3)). The total elimination capacities were as high as 360 g m(-3)h(-1), with nearly 97.5% removal of styrene and 75.6% for acetone. The biodegradation of acetone was inhibited by the presence of styrene, while styrene removal was affected only slightly by the presence of acetone. During transient-state experiments, increasing the overall pollutant load by almost 3-fold, i.e., from 220 to 600 g m(-3)h(-1), resulted in a sudden drop of removal efficiency (>90-70%), but still high elimination capacities were maintained. Periodic microscopic observations revealed that the originally inoculated Sporothrix sp. remained present in the reactor and actively dominant in the biofilm.
采用接种有杂色栓菌（Sporothrix variecibatus）的生物滤池，在稳态和瞬态条件下处理气相苯乙烯和丙酮混合物的生物降解性能进行了评估。通过改变气流速率（0.05-0.4m³h⁻¹），实验进行了实验，导致空床停留时间低至 17.1s，并改变气相苯乙烯（0.01-6.3 g m⁻³）和丙酮（0.01-8.9 g m⁻³）的浓度。总消除容量高达 360 g m⁻³h⁻¹，苯乙烯的去除率接近 97.5%，丙酮的去除率为 75.6%。丙酮的生物降解受到苯乙烯的抑制，而苯乙烯的去除仅受丙酮的轻微影响。在瞬态实验中，通过将总污染物负荷增加近 3 倍，即从 220 增加到 600 g m⁻³h⁻¹，导致去除效率突然下降（>90-70%），但仍保持高消除容量。定期进行的微观观察表明，最初接种的栓菌仍然存在于反应器中，并在生物膜中占主导地位。
