摘要
针对景观湖水富营养化问题,以油页岩灰渣为吸附剂处理湖水中的氨氮,研究了在不同酸浸时间下改性后油页岩灰渣对氨氮的吸附性能。结果表明,对含氨氮5.3mg.L-1的湖水,当采用酸浸30min后的油页岩灰渣吸附剂的用量为5g.L-1,吸附时间为60min,温度为20℃时,吸附量可达1mg.g-1。改性油页岩灰渣吸附氨氮符合Freundlich等温吸附模型,吸附反应属于物理吸附,并且符合一级反应动力学方程。处理后水中氨氮含量达到我国景观用水标准。
For the prevention against eutrophication of Landscape lake,oil shale ash sorbent was prepared from oil shale ash modified by H2SO4 solution under different reaction time.It was used to adsorb Ammonia nitrogen which contents was 5.3mg/L in Landscape Lake.The results show that the modified oil shale ash sorbent prepared by Acid leaching 30min had better adsorption capability to Ammonia nitrogen,and the adsorption quantity was 1mg？g-1 with sorbent 5g？L-1,reaction time 60min,temperature 20℃.The Ammonia nitrogen adsorption of modified oil shale ash sorbent obeys the Freundlich isothermal absorption equation.The absorption reaction was physical adsorption and followed the first-order kinetic equation.Ammonia nitrogen contents satisfied the landscape uses after the treatment.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2011年第1期135-137,共3页
Journal of Liaoning Technical University (Natural Science)
基金
辽宁省教育厅基金资助项目(2009a043)
关键词
改性油页岩渣
吸附
氨氮
modified oil shale ash
adsorption
ammonia nitrogen
