Abstract The present study describes the development of a bacterial cellulose (BC) filter for the treatment of oily waters. BC membranes were produced using an alternative medium containing 2.5 % corn steep liquor. Samples of previously purified membranes were characterized and tested as filters for the separation of oil from water (oil concentrations of 10, 150 and 230 ppm). Flow rate, filter diameter and membrane thickness after 6 and 10 days of cultivation were evaluated in a filtration system constructed in polyvinyl chloride. The BC membranes presented satisfactory flexibility, thermal stability and mechanical strength. However, the membrane obtained after 10 days supported 100 % more force than the membrane obtained after 6 days. The experiments revealed 100 % removal of the oil from all emulsions. The filtration flow rate increased proportionally to the filter diameter and decreased from the 6-day membrane to the 10-day membrane. The results of the present study are promising and demonstrate the efficiency, durability and strength of this novel biodegradable, non-toxic material for the treatment of oily waters generated during industrial activities.

中文翻译：

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使用细菌纤维素过滤器去除废水中的油

摘要 本研究描述了用于处理含油水的细菌纤维素 (BC) 过滤器的开发。BC 膜是使用含有 2.5% 玉米浆的替代培养基生产的。对先前纯化的膜样品进行表征和测试，作为用于将油与水分离（油浓度为 10、150 和 230 ppm）的过滤器。在用聚氯乙烯构建的过滤系统中评估培养 6 天和 10 天后的流速、过滤器直径和膜厚度。BC 膜表现出令人满意的柔韧性、热稳定性和机械强度。然而，10 天后获得的膜比 6 天后获得的膜承受的力多 100%。实验表明从所有乳液中 100% 去除了油。过滤流速与过滤器直径成比例增加，并从 6 天膜到 10 天膜降低。本研究的结果很有希望，并证明了这种新型可生物降解、无毒材料在处理工业活动中产生的含油水方面的效率、耐用性和强度。