含钛高炉渣对水中总磷的吸附性能与机理

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基金项目:

国家自然科学基金项目(51274084)

河北省自然科学基金—钢铁联合基金(E2014209152)。

Adsorption Characteristics of Ti-bearing Blast Furnace Slag for Total Phosphorus in Water

1. School of Environment, Nanjing Normal University, Jiangsu Province Key Laboratory of Materials Cycling and Pollution Controlling, Jiangsu Center for Collaborative Innovation in Geographical Information Resources Development and Application, Nanjing 210023, Jiangsu, China;
2. Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection of People's Republic of China, Nanjing 210042, Jiangsu, China;
3. School of Mechanical Engineering, Nanjing Institute of Technology, Nanjing 211167, Jiangsu, China

摘要: 以含钛高炉渣作为去除污水中总磷的吸附剂,结合动力学方程和等温吸附方程研究含钛高炉渣对总磷的吸附性能与机理。结果表明,含钛高炉渣对总磷的吸附包括表面吸附和颗粒内扩散两个阶段,其过程更倾向于单分子层的化学吸附。在20℃、pH=8、反应时间60 min的条件下,对于100 mL浓度为50 mg·L^-1的KH₂PO₄溶液,6.0 g粒径为40⁶0目的含钛高炉渣对总磷的去除率可以达到96%。
- 含钛高炉渣 /
- 吸附 /
- 污水 /
- 总磷 /
- 以废治废
Abstract: Using Ti-bearing blast furnace slag as the adsorbent for total phosphorus removal from waste water,the performances and mechanisms for total phosphorus adsorption of the slag were studied by combination of the kinetics equation and isothermal adsorption equation. The results show that the adsorption of total phosphorus by Ti-bearing blast furnace slag is consisted of surface adsorption and particle inner diffusion stages,and the process is more inclined to monolayer chemical adsorption.96% of total phosphorus in 100 mL(50 mg·L^-1 of KH₂PO₄ concentration) solution can be removed by 6.0 g Ti-bearing blast furnace slag with 40 ~60 mesh of particle size,at 20 ℃ for 60 min and p H = 8.
- Ti-bearing blast furnace slag /
- adsorption /
- waste water /
- total phosphorus /
- waste control by waste