环境工程学报2017，Vol.11Issue(8)：4718-4724,7.DOI:10.12030/j.cjee.201607189
泡沫混凝土对模拟氨氮废水的吸附
Removal of NH4+-N from aqueous solutions using foam concrete
摘要
Abstract
Water polluted by NH4+-N from industrial activities is considered a serious problem for its harmful effects on human health and the environment.Therefore, it is especially important to find a simple and efficient method for treating NH4+-N wastewater.In this work, the characteristics of foam concrete were studied for adsorption of NH4+-N in synthetic solutions simulating industrial wastewater, using a static adoption method.The results showed that the foam concrete was an efficient adsorbent for removal of NH4+-N from wastewater.The removal rate and Qt of NH4+-N were 59.19％ and 1.479 9 mg · g-1 after 90 min, respectively, at a foam concrete dosage of 40.0 g · L-1 to 100 mg · L-1 of NH4+-N at 25 ℃ and pH 8.38.The adsorption process follows the Freundlich isothermal equations and the adsorption processes were favorable.In addition, the adsorption of NH4+-N onto foam concrete preferably fitted the pseudo-second-order model.All the studied results indicated that foam concrete was an efficient and eco-friendly adsorbent useful for the removal of NH4+-N from wastewater.关键词
泡沫混凝土/氨氮/吸附Key words
foam concrete/NH4+-N/adsorption分类
资源环境引用本文复制引用
李金辉,周涛,曾超,张杰,李杭芬,赵由才..泡沫混凝土对模拟氨氮废水的吸附[J].环境工程学报,2017,11(8):4718-4724,7.基金项目
“十二五”国家科技支撑计划项目(2014BAL02B05) （2014BAL02B05）
贵州省科学技术厅项目(黔科合LH字[2015]7631) （黔科合LH字[2015]7631）
