| Autor: |
Jin Songli, Wen Yanfeng, Jun Yan, Yingqi Wei, Hong Cai, Shuaifeng Wu, Jianzhang Xiao |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Science of Advanced Materials. 13:705-717 |
| ISSN: |
1947-2935 |
| DOI: |
10.1166/sam.2021.3957 |
| Popis: |
The excessive fluorine content in ash-sluicing water has become one of the main environmental pollution problems in the thermal power generation industry. This study selected 5 representative soil types and used fluoride ions (F-) as the pollution control factor. The experimental results showed that the isotherms of the F- solutions prepared by deionized water (adsorbed by Jianbi clay and Fengrun sandy soil) and ash-sluicing water all conformed to the Langmuir isothermal adsorption equation. In terms of the F- solution prepared with ash-sluicing water, the adsorption isotherm of Tianshengqiao red clay conformed to the Langmuir isothermal adsorption equation; the adsorption isotherms of Beijing silty soil and Fen River loess conformed to the Henry isothermal adsorption equation. In terms of the maximum adsorption capacity, Tianshengqiao red clay > Jianbi clay > Beijing silty soil ? Fen River loess > Fengrun sandy soil. Through the experiments, we also found that the adsorption capacity decreased with increasing pH, and the pH buffering effects of the 5 soils, from high to low, were Tianshengqiao red clay > Jianbi clay > Beijing silty soil > Fen River loess > Fengrun sandy soil. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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