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Citation: Ji Lingchen, Liu Rong, Wang Guoxiang, Xu Yifan, Xu Rui. Adsorption Characteristics of Titanium-Bearing Blast Furnace Slags for Ammonia Nitrogen in Water[J]. Chemistry, ;2017, 80(6): 579-584. shu

Adsorption Characteristics of Titanium-Bearing Blast Furnace Slags for Ammonia Nitrogen in Water

Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Controlling, School of Environment, Nanjing Normal University, Nanjing 210023

Corresponding author: Liu Rong, liurongnjnu@126.com
Received Date: 30 October 2016
Accepted Date: 13 February 2017

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The effects of adding dosage and the size of the slags, the temperature, and the initial pH on the adsorption of ammonia nitrogen from water were studied by using the titanium blast furnace slag as the adsorbent. The kinetic analysis showed that the pseudo-second-order model can better describe the adsorption of ammonia on titanium-bearing blast furnace slags. Adsorption isotherm fitting showed that the Langmiur equation can better simulate the adsorption process. Under the conditions of 20℃, reaction time of 4h, 8 g (80~120mesh) slags, and 100mL (100mg/L) ammonia nitrogen solution, the removal rate of ammonia nitrogen could reach 32%. With the increasing of temperature, removal rate basically showed ascendant trend. Initial pH had a certain influence on the ammonia nitrogen removal, and it has a better removal effect under the alkaline condition.
- Titanium-bearing blast furnace slags,
- Ammonium,
- Adsorption,
- Kinetics,
- Isotherm adsorption
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