Phosphorus recovery from sludge by pH enhanced anaerobic fermentation and vivianite crystallization | |
Li, Changyu1,2; Sheng, Yanqing1![]() | |
发表期刊 | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
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2021-02-01 | |
卷号 | 9期号:1页码:8 |
关键词 | Anaerobic fermentation Phosphorus fraction Phosphorus recovery Waste active sludge Vivianite |
DOI | 10.1016/j.jece.2020.104663 |
通讯作者 | Sheng, Yanqing(yqsheng@yic.ac.cn) |
英文摘要 | Phosphorus (P) shortage is a global issue. However, P recovery from waste activated sludge (WAS) has huge potential. In this study, an innovative method for the recovery of P from WAS via pH adjustment-enhanced anaerobic fermentation (AF) and vivianite crystallization was developed. The results indicate that P could be effectively released from WAS to the supernatant under an appropriate pH during AF. P release efficiency increased by 31.6 % at pH 5.0 and 26.1 % at pH 11.0 compared to the control. Over 99 % of the P in the liquid could be recovered by subsequent vivianite crystallization, and similar to 60 % total P recovery efficiency was obtained. The scanning electron microscopy and X-ray diffraction analyses showed that the co-precipitation of Ca2+ and Mg2+ affected vivianite purity. The recovered vivianite purity from the pH 11.0 supernatant (91.39 %) was higher than the pH 5.0 supernatant (85.44 %) because of lower Ca2+ and Mg2+ ions in the former. In addition, the heavy metals in the recovered vivianite were lower than their own risk thresholds. This study provides new insights into the recovery of P from WAS by pH adjustment-enhanced AF and vivianite crystallization. |
资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences ; National Nature Science Foundation of China ; Key Project of the Research and Development Plan of Yantai ; Key Research and Development Program of Shandong Province |
收录类别 | SCI |
语种 | 英语 |
研究领域[WOS] | Engineering |
WOS记录号 | WOS:000615071800005 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.yic.ac.cn/handle/133337/27436 |
专题 | 中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心 中国科学院海岸带环境过程与生态修复重点实验室 |
通讯作者 | Sheng, Yanqing |
作者单位 | 1.Chinese Acad Sci, Res Ctr Coastal Environm Engn Technol Shandong Pr, Yantai Inst Coastal Zone Res, Chunhui Rd 17, Yantai 264003, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Changyu,Sheng, Yanqing,Xu, Hengduo. Phosphorus recovery from sludge by pH enhanced anaerobic fermentation and vivianite crystallization[J]. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,2021,9(1):8. |
APA | Li, Changyu,Sheng, Yanqing,&Xu, Hengduo.(2021).Phosphorus recovery from sludge by pH enhanced anaerobic fermentation and vivianite crystallization.JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,9(1),8. |
MLA | Li, Changyu,et al."Phosphorus recovery from sludge by pH enhanced anaerobic fermentation and vivianite crystallization".JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 9.1(2021):8. |
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