Bacterial cellulose produced from soybean oil refinery effluent is a good immobilization carrier because of the large pores in its fiber network, its high water-holding capacity, and its good biocompatibility. In this study, it was applied to immobilization of oleaginous yeasts for treating soybean oil refinery effluent. The immobilization percentage reached 50%, and the removal of chemical oxygen demand and oil content reached 92.1% and 93.1%, respectively, during dynamic immobilization using a mass percentage of bacterial cellulose of 30% and an immobilization time of 24 h, which were significantly higher than those of free oleaginous yeasts or yeasts immobilized by bacterial cellulose from rich medium. The immobilized oleaginous yeasts facilitated the recovery of the yeasts and effectively treated three batches of soybean oil refinery effluent. The immobilized oleaginous yeasts recovered after soybean oil refinery effluent treatment were pyrolyzed to produce bio-oil, which contributed to more alkanes and a higher calorific value of bio-oil in the pyrolysis products as compared to those of free oleaginous yeasts. As bacterial cellulose used as an oleaginous yeast cell carrier is produced from soybean oil refinery effluent, no waste of immobilization materials is involved and an efficient waste-into-oil bioprocess is developed.

豆油精炼废水生产的细菌纤维素由于其纤维网络中的大孔、高持水能力和良好的生物相容性，是一种很好的固定载体。在本研究中，它被应用于含油酵母的固定化处理豆油精炼废水。细菌纤维素质量百分比为30%，固定时间为24 h，固定化率达到50%，化学需氧量去除率和含油率去除率分别达到92.1%和93.1%，高于游离含油酵母或由丰富培养基中的细菌纤维素固定的酵母。固定化的含油酵母促进了酵母的回收​​，并有效地处理了三批豆油精炼废水。将大豆炼油厂废水处理后回收的固定化含油酵母热解以生产生物油，与游离含油酵母相比，这有助于热解产物中更多的烷烃和更高的生物油热值。由于用作含油酵母细胞载体的细菌纤维素是从豆油精炼废水中生产的，因此不涉及固定材料的浪费，并且开发了一种有效的将废物转化为油的生物工艺。