| Phosphorus recovery from sludge by pH enhanced anaerobic fermentation and vivianite crystallization | |
Li, Changyu1,2; Sheng, Yanqing1 ; Xu, Hengduo1
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| Source Publication | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
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| 2021-02-01 | |
| Volume | 9Issue:1Pages:8 |
| Keyword | Anaerobic fermentation Phosphorus fraction Phosphorus recovery Waste active sludge Vivianite |
| DOI | 10.1016/j.jece.2020.104663 |
| Corresponding Author | Sheng, Yanqing(yqsheng@yic.ac.cn) |
| Abstract | 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. |
| Funding Organization | 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 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Engineering |
| WOS ID | WOS:000615071800005 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.yic.ac.cn/handle/133337/27436 |
| Collection | 中科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 中科院海岸带环境过程与生态修复重点实验室 |
| Corresponding Author | Sheng, Yanqing |
| Affiliation | 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 |
| Recommended Citation 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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| Phosphorus recovery （3194KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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