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Preparation of iron phosphate from sludge sourced from the electrocoagulation treatment of source-separated urine

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Abstract

In order to prepare iron phosphate by waste sludge, we report a method for effective utilization of the sludge obtained from the electrocoagulation treatment of source-separated urine. The sludge was dissolved with hydrochloric acid and pretreated with H2O2 and Na3PO4; finally, NaOH was added to precipitate iron phosphate from the solution. Thermal treatment of the precipitate at 750 °C in air yielded crystalline quartz-like anhydrous FePO4. The precipitate was characterized by a number of thermal techniques such as thermogravimetry/differential thermal analysis, scanning electron microscopy, and X-ray powder diffraction.

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Acknowledgments

The authors acknowledge the financial support provided by National Science and Technology Major Project of China (Grant No. 2013ZX07312001).

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Authors and Affiliations

  1. Department of Environmental Science, School of Life and Environmental Science, Wenzhou University, ChaShan Higher Education District, Wenzhou, Zhejiang, China

    X. Zheng, Y. Zhang, T. Cheng, M. Zhao & Z. Jin

  2. School of Environmental Science and Engineering, Shanghai Jiao Tong University, No 800, Dong-chuan Road, Shanghai, 200240, China

    H. Kong

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  1. X. Zheng
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  2. Y. Zhang
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  3. T. Cheng
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  4. M. Zhao
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  5. H. Kong
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  6. Z. Jin
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Correspondence to X. Zheng.

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Zheng, X., Zhang, Y., Cheng, T. et al. Preparation of iron phosphate from sludge sourced from the electrocoagulation treatment of source-separated urine. Int. J. Environ. Sci. Technol. 13, 2091–2096 (2016). https://doi.org/10.1007/s13762-016-1025-0

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  • DOI: https://doi.org/10.1007/s13762-016-1025-0

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