{"title":"利用定制的双模块流电极电容式去离子(FCDI)策略从模拟磷酸废水中高效回收磷","authors":"","doi":"10.1016/j.resconrec.2024.107867","DOIUrl":null,"url":null,"abstract":"<div><p>The complex and unstable thermodynamic equilibrium of phosphoric acid wastewater (PAWW) has posed big challenges to conventional phosphorus (P) recovery methods via chemical precipitation process. This study proposes a tailored P recovery strategy from PAWW based on a dual-module flow electrode capacitive deionization (FCDI) system, which includes a P recovery module and a desalination module. The dual-module FCDI system efficiently separates P from impurities in simulated PAWW, through unique flow electrode circulations. And it demonstrates reasonable electrical energy consumption for P recovery of 2.45 kWh/kg P (constant voltage of 1.2 V). Over a continuous operation of the dual-module FCDI system for approximately 26.5 h, a P-enriched solution (8298 mg P/L) is successfully recovered from simulated PAWW, and then high-purity vivianite (Fe<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>‧8H<sub>2</sub>O) product is synthesized. The P recovery efficiency of the whole process reaches 78.66 %. This study provides an environmentally friendly strategy to recover P from PAWW based on FCDI technology.</p></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":null,"pages":null},"PeriodicalIF":11.2000,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Efficient phosphorus recovery from simulated phosphoric acid wastewater using a tailored dual-module flow electrode capacitive deionization (FCDI) strategy\",\"authors\":\"\",\"doi\":\"10.1016/j.resconrec.2024.107867\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The complex and unstable thermodynamic equilibrium of phosphoric acid wastewater (PAWW) has posed big challenges to conventional phosphorus (P) recovery methods via chemical precipitation process. This study proposes a tailored P recovery strategy from PAWW based on a dual-module flow electrode capacitive deionization (FCDI) system, which includes a P recovery module and a desalination module. The dual-module FCDI system efficiently separates P from impurities in simulated PAWW, through unique flow electrode circulations. And it demonstrates reasonable electrical energy consumption for P recovery of 2.45 kWh/kg P (constant voltage of 1.2 V). Over a continuous operation of the dual-module FCDI system for approximately 26.5 h, a P-enriched solution (8298 mg P/L) is successfully recovered from simulated PAWW, and then high-purity vivianite (Fe<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>‧8H<sub>2</sub>O) product is synthesized. The P recovery efficiency of the whole process reaches 78.66 %. This study provides an environmentally friendly strategy to recover P from PAWW based on FCDI technology.</p></div>\",\"PeriodicalId\":21153,\"journal\":{\"name\":\"Resources Conservation and Recycling\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":11.2000,\"publicationDate\":\"2024-08-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Resources Conservation and Recycling\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0921344924004609\",\"RegionNum\":1,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, ENVIRONMENTAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Resources Conservation and Recycling","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921344924004609","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
引用次数: 0
摘要
磷酸废水(PAWW)的热力学平衡复杂且不稳定,这给通过化学沉淀工艺回收磷(P)的传统方法带来了巨大挑战。本研究提出了一种基于双模块流电极电容式去离子(FCDI)系统的磷酸废水磷回收策略,该系统包括磷回收模块和脱盐模块。双模块 FCDI 系统通过独特的流动电极循环,有效地将 P 从模拟 PAWW 中的杂质中分离出来。该系统回收 P 的电能消耗合理,为 2.45 kWh/kgP(恒压 1.2 V)。双模块 FCDI 系统连续运行约 26.5 h,成功地从模拟 PAWW 中回收了富 P 溶液(8298 mg P/L),并合成了高纯度的 vivianite(Fe3(PO4)2‧8H2O)产品。整个过程的P回收率达到78.66%。该研究提供了一种基于 FCDI 技术从 PAWW 中回收 P 的环境友好型策略。
Efficient phosphorus recovery from simulated phosphoric acid wastewater using a tailored dual-module flow electrode capacitive deionization (FCDI) strategy
The complex and unstable thermodynamic equilibrium of phosphoric acid wastewater (PAWW) has posed big challenges to conventional phosphorus (P) recovery methods via chemical precipitation process. This study proposes a tailored P recovery strategy from PAWW based on a dual-module flow electrode capacitive deionization (FCDI) system, which includes a P recovery module and a desalination module. The dual-module FCDI system efficiently separates P from impurities in simulated PAWW, through unique flow electrode circulations. And it demonstrates reasonable electrical energy consumption for P recovery of 2.45 kWh/kg P (constant voltage of 1.2 V). Over a continuous operation of the dual-module FCDI system for approximately 26.5 h, a P-enriched solution (8298 mg P/L) is successfully recovered from simulated PAWW, and then high-purity vivianite (Fe3(PO4)2‧8H2O) product is synthesized. The P recovery efficiency of the whole process reaches 78.66 %. This study provides an environmentally friendly strategy to recover P from PAWW based on FCDI technology.
期刊介绍:
The journal Resources, Conservation & Recycling welcomes contributions from research, which consider sustainable management and conservation of resources. The journal prioritizes understanding the transformation processes crucial for transitioning toward more sustainable production and consumption systems. It highlights technological, economic, institutional, and policy aspects related to specific resource management practices such as conservation, recycling, and resource substitution, as well as broader strategies like improving resource productivity and restructuring production and consumption patterns.
Contributions may address regional, national, or international scales and can range from individual resources or technologies to entire sectors or systems. Authors are encouraged to explore scientific and methodological issues alongside practical, environmental, and economic implications. However, manuscripts focusing solely on laboratory experiments without discussing their broader implications will not be considered for publication in the journal.