PREPARATION OF Fe<sub>3</sub>O<sub>4</sub>@CNF@Zn-BTC MATERIAL AND ITS PERFORMANCE IN REMOVING PHOSPHORUS FROM WATER

ZHAO Zhong-qi; ZHAO Yan; LANG Lang; HU Xiao-min; SHAN Shi-liang

doi:10.13205/j.hjgc.202108012

Volume 39 Issue 8

Jan. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2021 > 39(8): 93-98

ZHAO Zhong-qi, ZHAO Yan, LANG Lang, HU Xiao-min, SHAN Shi-liang. PREPARATION OF Fe3O4@CNF@Zn-BTC MATERIAL AND ITS PERFORMANCE IN REMOVING PHOSPHORUS FROM WATER[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(8): 93-98. doi: 10.13205/j.hjgc.202108012

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ZHAO Zhong-qi, ZHAO Yan, LANG Lang, HU Xiao-min, SHAN Shi-liang. PREPARATION OF Fe₃O₄@CNF@Zn-BTC MATERIAL AND ITS PERFORMANCE IN REMOVING PHOSPHORUS FROM WATER[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(8): 93-98. doi: 10.13205/j.hjgc.202108012

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PREPARATION OF Fe₃O₄@CNF@Zn-BTC MATERIAL AND ITS PERFORMANCE IN REMOVING PHOSPHORUS FROM WATER

doi: 10.13205/j.hjgc.202108012

1. School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China;
2. Zhicheng Huayuan(Liaoning) Construction Engineering Management Consulting Co., Ltd, Shenyang 110819, China

Received Date: 2021-01-06
Available Online: 2022-01-18

Abstract

Abstract

In view of the current situation of phosphorus pollution such as excessive phosphorus content in effluent of the secondary sedimentation tank of a sewage plant, a new material Fe₃O₄@CNF@Zn-BTC was synthesized for specific adsorption of phosphorus. It was made of magnetic nano Fe₃O₄ particles, carboxylated cellulose nanocrystals and metal organic framework Zn-BTC under general laboratory conditions. The loading of CNF material and MOFs material improved the crystallinity of the composite material, and then improved the rigidity and stability of the composite material, and produced the related bonds between TOCNF surface -COO- and Fe and MOFs, which improved the porosity of the composite material and the rigidity of the material at the same time, and overcome the shortcomings of rigidity and stability of MOFs material to a great extent. Fe₃O₄@CNF@Zn-BTC was characterized by SEM, FTIR, XRD, XPS and BET, and its removal effect on trace phosphorus in water was discussed under normal temperature and pressure. The results showed that the phosphorus content could be reduced to 0.3~0.5 mg/L by adding a small amount of Fe₃O₄@CNF@Zn-BTC at normal temperature and pressure for 60 minutes, which met the first class A standard specified in GB 18918—2002, and then the average removal rate was as high as 95%. Compared with other conventional phosphorus removal materials such as activated carbon, Fe₃O₄@CNF@Zn-BTC material had higher phosphorus removal efficiency, simpler recovery, stronger reproducibility, lower cost and easier synthesis process. Therefore, Fe₃O₄@CNF@Zn-BTC showed great prospects in improving the water quality of phosphorus polluted environment.
- phosphorus removal,
- metal organic framework,
- cellulose nanocrystals,
- magnetic nano Fe₃O₄

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References(11)

References

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