Preparation of iron phosphate from sludge sourced from the electrocoagulation treatment of source-separated urine |
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| Authors: | X Zheng Y Zhang T Cheng M Zhao H Kong Z Jin |
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| Institution: | 1.Department of Environmental Science, School of Life and Environmental Science,Wenzhou University,Wenzhou,China;2.School of Environmental Science and Engineering,Shanghai Jiao Tong University,Shanghai,China |
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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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