College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China.
Bioresour Technol. 2013 Jul;139:87-93. doi: 10.1016/j.biortech.2013.04.037. Epub 2013 Apr 19.
A novel entrapment matrix, calcium alginate (CA) coupled with activated carbon fiber (ACF), was prepared to immobilize Pseudomonas oleovorans DT4 for degrading tetrahydrofuran (THF). The addition of 1.5% ACF increased the adsorption capacity of the immobilized bead, thus resulting in an enhanced average removal rate of 30.3mg/(Lh). The synergism between adsorption and biodegradation was observed in the hybrid CA-ACF beads instead of in the system comprising CA beads and freely suspended ACF. The effective diffusion coefficient of the CA-ACF bead was not significantly affected by bead size, but the bead's value of 1.14×10(-6)cm(2)/s (for the bead diameter of 0.4 cm) was larger than that of the CA bead by almost one order of magnitude based on the intraparticle diffusion-reaction kinetics analysis. Continuous treatment of the THF-containing wastewater was succeeded by CA-ACF immobilized cells in a packed-bed reactor for 54 d with a >90% removal efficiency.
一种新型的包埋基质，海藻酸钠（CA）与活性炭纤维（ACF）偶联，被用来固定假单胞菌 DT4 以降解四氢呋喃（THF）。添加 1.5%的 ACF 增加了固定珠的吸附能力，从而使平均去除率提高了 30.3mg/（Lh）。在混合 CA-ACF 珠中观察到吸附和生物降解之间的协同作用，而不是在 CA 珠和自由悬浮的 ACF 组成的系统中观察到。有效扩散系数的 CA-ACF 珠没有显著影响珠的大小，但珠的价值 1.14×10（-6）cm（2）/s（珠直径为 0.4 厘米）大于 CA 珠的几乎一个数量级，基于内扩散反应动力学分析。CA-ACF 固定细胞在填充床反应器中连续处理含 THF 的废水 54 天，去除率>90%。
