镍铁水滑石对水中磷酸根的去除及其解析性能研究

王成; 许秋瑾; 胡小贞; 杨枫; 余小梅

doi:10.3969/j.issn.1674-991X.2019.01.011

镍铁水滑石对水中磷酸根的去除及其解析性能研究

doi: 10.3969/j.issn.1674-991X.2019.01.011

中国环境科学研究院,湖泊水污染治理与生态环境技术国家工程实验室,北京 100012

详细信息

作者简介:
王成(1987—),男,博士,主要从事环境纳米修复材料研究, wangcheng9199@sina.com

通讯作者:
许秋瑾 E-mail: xuqj@craes.org.cn

中图分类号: X703
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- 被引次数: 0
出版历程
- 收稿日期: 2018-05-31
- 刊出日期: 2019-01-20

Study on removal and desorption capacity of phosphate from water with NiFe-LDHs

National Engineering Laboratory for Lake Pollution Control and Ecological Restoration,Chinese Research Academy of Environmental Science, Beijing 100012, China

More Information

Corresponding author: Qiujin XU E-mail: xuqj@craes.org.cn

摘要

摘要: 高效、低成本实现污水中磷元素的去除及回收对解决磷危机具有重要的意义。采用共沉淀法结合超声处理技术制备出一系列不同镍铁比(Ni :Fe)的超薄镍铁水滑石(Ni_xFe-LDHs)纳米片,通过构建水滑石Zeta电位和吸附磷酸根($PO_{4}^{3-}$)的能力与镍铁比的关系曲线,发现Zeta电位和结晶性能是影响LDHs吸附性能的2个重要内在因素。当Ni :Fe为2 :1时,其对$PO_{4}^{3-}$的吸附量可达248.00 mg/g。在此基础上,通过适当的再生工艺,经过6次循环后,Ni₂Fe-LDHs的再生效率仍可达59.2%。
- 共沉淀法 /
- 超薄镍铁水滑石 /
- 吸附 /
- 再生效率
Abstract: The removal and recovery of phosphorus from wastewater in an efficient and cost-effective way are critical for resolving the phosphorus crisis. The ultra-thin Ni_xFe-LDHs nanosheets with different molar ratio of Ni:Fe were fabricated by a co-precipitation method combined with ultrasonic treatment. The Zeta position and crystallinity played an important role in promoting the adsorption of LDH, which were observed in the relationship between the Zeta position, crystallinity and the molar ratio of Ni :Fe. When the molar ratio of Ni :Fe was 2 :1, the amount of phosphate adsorption could reach 248.00 mg/g. The regenerative efficiency of Ni₂Fe-LDHs was still up to 59.2% after adsorption and desorption for six cycles through proper regeneration technology.
- co-precipitation method /
- ultra-thin Ni_xFe-LDHs /
- adsorption /
- regenerative efficiency

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参考文献(23)

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