摘要
选取聚丙烯工业吸油棉为固定化生物载体材料,通过开展材料改性及固定化工艺优化研究,制备出适用于溢油污染海岸线环境的固定化高效石油降解生物制剂。结果表明:优选0.2mol/L NaOH溶液作为固定化载体材料改性液,改性前后比表面积由33.120m^2/g增至189.621m^2/g,平均孔径由16.997nm增至36.810nm;明确最优固定化参数:固定化初始pH值7~8、固定化初始温度28~32℃、载体投加量2.00~2.50g/L;固定化高效石油降解生物制剂TPHs降解率均高于游离菌群和未改性载体材料,环境耐受性及原油降解效率显著提升。
This study selected the absorbing cotton in polypropylene industry for the immobilized biological carrier,through modification and optimization of immobilization process parameters,the immobilized biological oil-degrading agent which is suitable for oil-contaminated coastline is made.The results showed that when the NaOH solution(0.2 mol/L)was chosen as the modified liquid the specific surface area was increased from 33.120 m^2/g to 189.621 m^2/g,and the average pore size was increased from 16.997 nm to 36.810 nm.The optimal immobilization parameters were determined as follows:the initial pH was between 7 and 8,the initial temperature was 28 to32 ℃,and the dosage was 2.00 to 2.50 g/L.The degradation rate of TPHs was higher than that of free bacteria group and original absorbent cotton,and the environmental tolerance and crude oil degradation efficiency were significantly improved.
出处
《油气田环境保护》
CAS
2018年第1期21-24,共4页
Environmental Protection of Oil & Gas Fields
基金
公司发展战略与科技基础工作决策支持研究(2016D-5006-08)
关键词
固定化微生物技术
材料改性
石油烃降解菌
immobilized microorganism technology
material modification
oil-degrading bacteria