Zapata Acosta Karol, Carrasco-Marin Francisco, Cortés Farid B, Franco Camilo A, Lopera Sergio H, Rojano Benjamín A
Grupo de Investigación en Fenómenos de Superficie-Michael Polanyi, Departamento de Procesos y Energía, Facultad de Minas, Universidad Nacional de Colombia, Sede Medellín, Medellín 050034, Colombia.
Grupo de Investigación Yacimientos de Hidrocarburos, Departamento de Procesos y Energía, Facultad de Minas, Universidad Nacional de Colombia, Sede Medellín, Medellín 050034, Colombia.
Nanomaterials (Basel). 2019 Apr 1;9(4):500. doi: 10.3390/nano9040500.
Production water is the largest byproduct of the oil industry and must be treated before disposal, either by reinjection or shedding processes, with the purpose of eliminating emulsified crude oil and avoiding the operational and toxic problems associated with it. The objective of this work was to immobilize a hydrocarbon-degrading strain on activated carbons, to evaluate the biocomplex's capacity for catalyzing hydrocarbons from Oil in Brine emulsions (O/W) simulating produced waters. Activated carbons were prepared and their chemical and porous properties were estimated by XPS, pH and SEM, N₂ adsorption, and mercury porosimetry. Biomaterials were synthesized and hydrocarbon removal tests were performed. The basic and neutral carbons immobilized by physisorption in the macroporous space and electrostatic interactions (10⁸⁻10⁸ UFC∙g), while acid materials inhibited bacterial growth. Removal of aromatic hydrocarbons was more efficient using materials (60%⁻93%) and biomaterials (16%⁻84%) than using free (1%⁻47%), and the removal efficiencies of crude oil were 22%, 48% and 37% for and two biomaterials, respectively. The presence of minor hydrocarbons only when was present confirmed the biotransformation process.
采出水是石油工业最大的副产品，在通过回注或排放工艺进行处置之前必须进行处理，目的是去除乳化原油并避免与之相关的操作和毒性问题。这项工作的目的是将一种烃降解菌株固定在活性炭上，以评估生物复合物催化模拟采出水中盐水乳液（O/W）中烃类的能力。制备了活性炭，并通过XPS、pH和SEM、N₂吸附以及压汞法对其化学和多孔性质进行了评估。合成了生物材料并进行了烃去除试验。通过物理吸附固定在大孔空间并通过静电相互作用固定的碱性和中性碳（10⁸⁻10⁸ UFC∙g），而酸性材料抑制细菌生长。使用材料（60%⁻93%）和生物材料（16%⁻84%）去除芳烃比使用游离菌（1%⁻47%）更有效，原油去除效率对于 、两种生物材料分别为22%、48%和37%。仅当 存在时少量烃类的存在证实了生物转化过程。
