Phosphorous removal and high -purity struvite recovery from hydrolyzed urine with spontaneous electricity production in Mg -air fuel cell
文献类型：期刊论文
| 作者 | Liao, Meiling1,2,3; Liu, Yuan1,2 ; Tian, Enling1,2; Ma, Weiqi1,2,3; Liu, Hong1,2
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| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2020-07-01 |
| 卷号 | 391页码:11 |
| 关键词 | Urine Phosphorous removal Struvite recovery Electricity production Mg-air fuel cell |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2019.123517 |
| 通讯作者 | Liu, Yuan(liuyuan@cigit.ac.cn) |
| 英文摘要 | In this study, a single-chamber Mg-air fuel cell (MAFC) is used to remove phosphorous (P) and to simultaneously recover struvite and electricity from synthetic hydrolyzed urine. The Mg 2+ generated from the anodic oxidation of Mg alloy provides a source of Mg for struvite precipitation. Meanwhile, the cathodic oxygen reduction re- action through a four-electron pathway produces OH- to maintain suitable pH for struvite precipitation and the avoid the addition of exogenous chemical reagents. The P concentration in the e ffluent is lower than 0.5 mg L-1 after a 15-min treatment and meets the sewage grade A discharge standard in China. The P removal e fficiency of urine reaches 99.48% with an e ffluent P concentration of 0.28 mg L-1 after a 25-min operation of MAFC, and the removed P can be completely recovered as high-purity struvite precipitation. The rate constant for P removal is calculated to be 0.46 min(-1) by fitting a first-order kinetic model. The recovered precipitation is identi fied as struvite, and the chemical analysis reveals a struvite purity of 98.26%. The maximum power density of MAFC with P-containing urine as electrolyte reaches 552.32 mW m(-3) , which is 47.39% higher than that of MAFC with P-free electrolyte. The struvite precipitation reaction can promote the electricity production of MAFC. This work provides not only a novel method for purifying and recovering resources from urine but also a new perspective for enhancing the electrochemical performance of MAFC in the future. |
| 资助项目 | National Natural Science Foundation of China[51978641] ; National Natural Science Foundation of China[51578526] ; National Natural Science Foundation of China[51525805] ; Natural Science Foundation of Chongqing[cstc2018jcyjAX0327] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2016341] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000544679100007 |
| 出版者 | ELSEVIER SCIENCE SA |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/11398]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Liu, Yuan |
| 作者单位 | 1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 2.Chinese Acad Sci, Key Lab Reservoir Aquat Environm, Chongqing 400714, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liao, Meiling,Liu, Yuan,Tian, Enling,et al. Phosphorous removal and high -purity struvite recovery from hydrolyzed urine with spontaneous electricity production in Mg -air fuel cell[J]. CHEMICAL ENGINEERING JOURNAL,2020,391:11. |
| APA | Liao, Meiling,Liu, Yuan,Tian, Enling,Ma, Weiqi,&Liu, Hong.(2020).Phosphorous removal and high -purity struvite recovery from hydrolyzed urine with spontaneous electricity production in Mg -air fuel cell.CHEMICAL ENGINEERING JOURNAL,391,11. |
| MLA | Liao, Meiling,et al."Phosphorous removal and high -purity struvite recovery from hydrolyzed urine with spontaneous electricity production in Mg -air fuel cell".CHEMICAL ENGINEERING JOURNAL 391(2020):11. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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