摘要
为提高低温下氨氮的去除效果,以“浸渍-煅烧”法制备载铁活性炭(Fe-AC),对其进行多方面表征,并开展低温(10℃)动态吸附实验。材料表征结果表明,改性后的Fe-AC表面变得更加粗糙,孔体积高于AC,铁元素主要以Fe_(2)O_(3)的形式负载于活性炭上,表面官能团中碱性基团含量增加了13.70%,酸性基团含量减少了14.33%。低温动态穿透实验结果表明,在相同条件下,Fe-AC滤柱被穿透的时间比AC滤柱延迟。相关模型拟合结果表明Yoon-Nelson模型可较准确地预测穿透50%所用的时间,且相关系数都在0.93以上。
In order to improve the removal efficiency of ammonia nitrogen at low temperature,iron-loaded activated car⁃bon(Fe-AC)was prepared by impregnation-calcination method and characterized in many aspects,and the dynamic ad⁃sorption experiment at low temperature(10℃)was carried out.The characterization results of the materials showed that the surface of the Fe-AC became rougher,and the pore volume was higher than that of AC.Iron was mainly loaded on the activated carbon in the form of Fe_(2)O_(3).The content of basic groups in the surface functional groups increased by 13.70%,while the content of acidic groups decreased by 14.33%.The results of low temperature dynamic penetration experiments showed that under the same conditions,the penetration time of Fe-AC filter column was later than that of AC filter col⁃umn.The research showed that the Yoon-Nelson model could accurately predict the time required for 50%penetration and the correlation coefficient was above 0.93.
作者
王占鑫
贾彪
任宏民
胡向家
任芝军
吕龙义
WANG Zhanxin;JIA Biao;REN Hongmin;HU Xiangjia;REN Zhijun;Lü Longyi(School of Energy and Environmental Engineering,Hebei University of Technology,Tianjin 300401,China;Tianjin Key Laboratory of Clean Energy and Pollution Control,Tianjin 300401,China)
出处
《河北工业大学学报》
CAS
2022年第1期68-74,共7页
Journal of Hebei University of Technology
基金
国家自然科学基金(51779068)
河北省自然科学基金(E2019202055)。
关键词
载铁活性炭
吸附
氨氮
低温
动态穿透
iron-loaded activated carbon
adsorption
ammonia nitrogen
low temperature
dynamic penetration
