School of Environmental Science & Safety Engineering, Tianjin University of Technology, Tianjin, China E-mail:
Laboratory of Environmental protection in Water Transport Engineering, Tianjin Research Institute for Water Transport Engineering, Ministry of Transport, Tianjin, China.
Water Sci Technol. 2020 Dec;82(11):2296-2303. doi: 10.2166/wst.2020.497.
In this study, the removal effect of free and immobilized bacteria on crude oil was determined. Sodium alginate and polyvinyl alcohol were used as embedding agent, and ramie was modified as an adsorbent to immobilize free bacteria. The conditions for preparing immobilized pellets were optimized using the response surface method, and the best combination was simulated and obtained by Design-Expert 8.0. The best degradation rate of immobilized bacteria was 75.52%. The degradation by free bacteria and immobilized bacteria showed that the selected microorganisms had a good degradation effect on petroleum hydrocarbons.
在这项研究中，测定了游离菌和固定化菌对原油的去除效果。选用海藻酸钠和聚乙烯醇作为包埋剂，对苎麻进行改性作为吸附剂来固定游离菌。利用响应面法优化固定化球的制备条件，通过 Design-Expert 8.0 软件对最佳组合进行模拟并得到。固定化菌的最佳降解率为 75.52%。游离菌和固定化菌的降解结果表明，所选微生物对石油烃类具有良好的降解效果。
