赤泥多孔材料负载微生物去除苯酚

摘要

In this study,a porous material was prepared from red mud（bauxite residue） and other industrial waste.The porous material was modified by acid,alkali or zirconium oxychloride and was loaded with pseudomonas putida to remove phenol in sewage.The strength of porous material nodulized at 1200 ℃ could meet the test requirements.Its porosity reached 80%,and pore size was controlled between 50 and 100 nm.Porous material modified by zirconium oxychloride had higher loading capacity for pseudomonas putida,than the porous material modified by acid or alkali and unmodified original red mud.The main factors that affected phenol removal were solution pH and initial phenol concentration.The optimum condition was solution pH at 5～6 and initial concentration of phenol at 40 mg/L.Removal rate could reach 80% under the optimum condition.%以赤泥等工业废弃物为原料制备了一种多孔材料,采用酸改性、碱改性、氧氯化锆改性3种方法进行表面改性,在表面负载假单胞菌,用于去除污水中的苯酚。结果表明：在1200℃下烧结多孔材料,孔隙率可以达到80%,孔隙大小控制在50～100μm;氧氯化锆改性后的多孔材料负载假单胞菌的能力强;去除苯酚的主要影响因素为苯酚初始浓度和pH值,在pH值为5～6、苯酚初始浓度为40mg/L的条件下去除能力最强,可以达到80%。