Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, 174 Shazheng Street, Chongqing 400030, China.
Institute of Life Sciences, Wenzhou University, Chashan University Town, Wenzhou 325000, China.
Sci Rep. 2017 Apr 6;7:46059. doi: 10.1038/srep46059.
A biofilter with fungus was developed for efficient degradation of benzene, which can overcome the potential risk of leakage commonly found in such services. Results indicated that the optimum parameter values were temperature 40 °C, pH 6, and 500 mg L of the initial benzene concentration. Besides, the empty bed residence time and inlet load range of biofilter were set to 20 s and 21.23-169.84 g m h respectively. Under these conditions, this biofilter can obtain the maximum removal efficiency of more than 90%, the eliminating capacity could be up to 151.67 g m h. Furthermore, scanning electron microscopy was used to investigate three filler materials for packing fungus biofilm. This is the first study introducing an Aspergillus strain for benzene removal and these results highlight that the development of this biofilter has the potential scaling-up application as gas-processing of industrial wastes.
开发了一种带有真菌的生物过滤器，用于高效降解苯，可克服此类服务中常见的潜在泄漏风险。结果表明，最佳参数值为温度 40°C、pH 值 6 和初始苯浓度为 500mg/L。此外，生物过滤器的空床停留时间和入口负荷范围分别设定为 20s 和 21.23-169.84g/m³h。在这些条件下，该生物过滤器可以获得超过 90%的最大去除效率，去除容量可达 151.67g/m³h。此外，还使用扫描电子显微镜研究了用于包装真菌生物膜的三种填充材料。这是首次引入曲霉属菌株去除苯的研究，这些结果表明，这种生物过滤器的开发具有作为工业废物气体处理的潜在扩大应用的潜力。
