Citation: Jing Wang, Pingping Li, Yuehui Wang, Yifan Xiu, Bingqian Zhang, Shuwen Wang, Hongtao Gao. Treatment and Discharge Evaluation of Phosphorus-Containing Wastewater[J]. University Chemistry, ;2024, 39(5): 52-62. doi: 10.3866/PKU.DXHX202309097 shu

Treatment and Discharge Evaluation of Phosphorus-Containing Wastewater

1.
College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong Province, China;
2.
College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong Province, China

Received Date: 28 September 2023
Revised Date: 17 January 2024

This study presents an improvement to the analytical chemistry experiment “Determination of total phosphorus in water and wastewater by spectrophotometry”. Maifannite, a green and non-toxic material, was modified with ZnFe-LDHs (layered double hydroxides) to create an adsorption material. The modified Maifannite was characterized using FTIR (Fourier Transform Infrared Spectroscopy), XRD (X-ray Diffraction), SEM (Scanning Electron Microscope), and EDS-mapping (Energy Dispersive X-ray Spectroscopy Mapping). Optimal adsorption conditions for total phosphorus by ZnFe-LDHs modified Maifannite were explored, achieving a removal rate of over 98.4%. After treatment with modified Maifannite, the concentration of phosphorus in wastewater was reduced to less than 0.08 mg·L⁻¹, meeting the first-level discharge standard for phosphorus. This enhanced experiment is rich in content, comprehensive, and cultivates students’ research and teamwork abilities while practicing the concept of “green chemistry”. It is suitable for extension to higher-grade undergraduate teaching.
- Modified maifannite,
- Adsorption,
- Phosphorus content determination,
- Environment-friendly,
- Innovative design and improvement
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