Effects of Montmorillonite Colloid on Ammonia Nitrogen Transport in Porous Media

Abstract:

Column experiments were conducted to investigate the effect of montmorillonite colloid on ammonia nitrogen transport in porous media. Results show that the breakthrough curves of ammonia nitrogen present as three stages including ‘begin to penetrate’, ‘rapid penetration’, ‘stable penetration’, the shape looks like the letter ‘S’. When montmorillonite colloid concentrations are 0, 50, 100, 200mg·L^-1, the change rates of relative concentration are 0.139/PV, 0.153/PV, 0.163/PV, 0.187/PV, the maximum relative concentrations are 0.89, 0.92, 0.97, 0.97, the ammonia nitrogen penetration rates are 61.70, 77.16, 77.86, 78.87. That is to say, the montmorillonite colloid can facilitate ammonia nitrogen transport in porous media, and the higher the colloid concentration, the more obvious the promoting effect is.

• Periodical: Advanced Materials Research (Volumes 1073-1076)
• Pages: 791-794
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1073-1076.791
• Online since: December 2014
• Authors: Bo Wang, Zhao Luo*
• Keywords: Ammonia Nitrogen, Montmorillonite Colloid, Porous Media, Transport

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