【摘 要】
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Phosphorus is an essential and irreplaceable element for biologyrequirement,but it will be depleted in the next 50-100 years.Therefore,it is urgent to find an efficient and cost-effective technology t
【机 构】
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Chongqing Key Laboratory of Environmental Materials & Remediation Technologies,Chongqing University
【出 处】
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2018中国(重庆)国际表面工程论坛暨重庆第十四届表面工程技术论坛
论文部分内容阅读
Phosphorus is an essential and irreplaceable element for biologyrequirement,but it will be depleted in the next 50-100 years.Therefore,it is urgent to find an efficient and cost-effective technology to recover the phosphorus.In this experiment,phosphorus recoveryhas been achieved by the electro-Fentonprocess.Effects of current intensity,initial pH and H2O2 concentration on the recovery efficiency of hypophosphite were investigated.When the current intensity was 0.2 A,pH value was 3.0 and H2O2 concentration was 90 mM,hypophosphite was totally oxidized to phosphate.And then the phosphate was recovery through the generation of deposition.In order to determine the mechanism of hypophosphite recovery,morphology and microstructure of the deposition were analyzed by theX-ray diffraction,scanning electron microscopy,energy dispersive X-ray,high resolution transmission electron microscopy,fourier transform infraredand X-ray photoelectron spectra.The generation of hydroxyl radicals was confirmed by electron spin resonancetechnique.This method was a clean process for phosphorus recovery without generating hazardous substances.
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