CAJ | 학술논문

采用共沉淀法在碱性条件下制得Fe3O4-粉煤灰复合材料，通过投加量、pH值、氨氮初始质量浓度、振荡时间等单因素实验，比较了不同条件下该复合材料对模拟氨氮废水的吸附性能差异，并结合吸附模型对其吸附机理进行初步探究。结果表明，室温条件下（25℃），氨氮初始质量浓度为20 mg/L、复合材料投加量为1 g/100mL、pH值为6、以150 r/min振荡30 min时，对氨氮吸附效果最佳。该复合材料对氨氮的等温吸附过程更符合Freundlich模型，等温吸附方程为ln qe=0.3271ln ce-0.2851，拟合度R2为0.96883。
채용공침정법재감성조건하제득Fe3O4-분매회복합재료，통과투가량、pH치、안담초시질량농도、진탕시간등단인소실험，비교료불동조건하해복합재료대모의안담폐수적흡부성능차이，병결합흡부모형대기흡부궤리진행초보탐구。결과표명，실온조건하（25℃），안담초시질량농도위20 mg/L、복합재료투가량위1 g/100mL、pH치위6、이150 r/min진탕30 min시，대안담흡부효과최가。해복합재료대안담적등온흡부과정경부합Freundlich모형，등온흡부방정위ln qe=0.3271ln ce-0.2851，의합도R2위0.96883。
Fe3O4-lfy ash composite material was prepared by the coprecipitation method in alkaline conditions. Adsorption performance of the material on simulation of ammonia wastewater was investigated through single factor experiment (including dosage, pH value, ammonia nitrogen concentration, oscillation time). Preliminary study on adsorption mechanism also was investigated based on the model analysis. The results show that the optimum adsorption for NH3-N on the composite material was in the following condition: initial concentration of ammonia nitrogen is 20 mg/L, pH= 6, the time of oscillation is 30min. The isothermal adsorption process is more iftted to Freundlich model. The equation islnqe=0.3271lnce-0.2851, with the iftting degree forR2 is 0.96883.