Adsorption of ammonia-nitrogen in landfill leachate on the colloids of beach water-bearing media
As part of the field investigation of ammonia-nitrogen contamination from landfills in the Tianjin shallow groundwater, two representative water-bearing media were sampled in the Tianjin coastal plain, and their major physico-chemical properties were analyzed. Dynamic curves and isotherms of ammonia-nitrogen adsorption on colloidal particles of water-bearing media were measured and the influence of salt content and pH on the adsorption was evaluated. The research results show that the kinetics of ammonia-nitrogen adsorption on the colloid was logarithmic, the equilibrium period of the adsorption is 20-24 hours, and all the adsorption isotherms are straight. In addition, it is found that the colloids release the ammonia-nitrogen rather than adsorb aqueous ammonia-nitrogen when ammonia-nitrogen content is lower than a certain value. The relationship between the adsorption quantity of ammonia-nitrogen on colloid and pH, salinity is linear decrease and logarithmic decrease,respectively.
Coastal region Landfill leachate Water-bearing media Colloid Ammonia-nitrogen Adsorption
H.Li X.Zheng J.Wu X.Jia B.Wang
Water & Soil Environment Pollution Control Laboratory, Tianjin University of Science & Technology, T Institute of Environmental Science and Engineering, Ocean University of China, Qingdao, China Water & Soil Environment Pollution Control Laboratory, Tianjin University of Science & Technology, T
国际会议
第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)
昆明
英文
1585-1588
2007-07-31（万方平台首次上网日期，不代表论文的发表时间）