Phosphorus recovery from sludge by pH enhanced anaerobic fermentation and vivianite crystallization

doi:10.1016/j.jece.2020.104663

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 山东省海岸带环境工程技术研究中心

	Phosphorus recovery from sludge by pH enhanced anaerobic fermentation and vivianite crystallization
	Li, Changyu 1,2; Sheng, Yanqing 2; Xu, Hengduo 2
刊名	JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
	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.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23050203] ; National Nature Science Foundation of China[41373100] ; Key Project of the Research and Development Plan of Yantai[2018ZHGY080] ; Key Project of the Research and Development Plan of Yantai[2018ZHGY083] ; Key Research and Development Program of Shandong Province[2019GSF109002]
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:000615071800005
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
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/27435]
专题	烟台海岸带研究所_山东省海岸带环境工程技术研究中心烟台海岸带研究所_中科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.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Res Ctr Coastal Environm Engn Technol Shandong Pr, Yantai Inst Coastal Zone Res, Chunhui Rd 17, Yantai 264003, 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.