摘要
在实验室模拟环境中研究了内蒙古段黄河表层沉积物对氨氮的吸附特征,并探讨吸附反应的可逆性。研究结果表明,沉积物对氨氮的吸附反应符合Langumuir等温吸附模型,得出春季最大吸附量为416.67-909.10 mg/kg,秋季为714.29-2 000.00 mg/kg,与沉积物TN、TP、CEC及有机质呈显著正相关关系;沉积物氨氮的吸附-解吸平衡浓度平均为1.61 mg/L;沉积物对氨氮的吸附行为属于不可逆反应。
In this paper,the characteristics of ammonia adsorption on surface sediments form Inner Mongolia reach of the Yellow River was studied in laboratory simulated conditions. Adsorption isotherm of ammonia in surface sediments from the Yellow River in Inner Mongolia could be described by Langmuir isotherm model,the maximum amount of adsorption was 416. 67 ~909. 10 mg / kg in spring,714. 29 ~ 2 000. 00 mg / kg in autumn. The capacity of the ammonia adsorption in sediments was mainly affected by TN、TP、CEC and the content of organic matter of sediments. The adsorption-desorption equilibrium concentration averaged at 1. 61 mg / L. Ammonia adsorption behavior of sediments belonged to an irreversible reaction.
出处
《环境工程》
CAS
CSCD
北大核心
2016年第6期80-84,共5页
Environmental Engineering
基金
国家自然科学基金项目(41263005)
关键词
黄河沉积物
氨氮
吸附
可逆性
sediments in the Yellow River
ammonia
adsorption
reversibility
