Improvement of the quality of struvite crystals recovered from a mixture of human urine and municipal sewage via a novel two-step precipitation method

doi:10.1016/j.eti.2018.08.003

CORC > 武汉植物园 > 中国科学院武汉植物园

	Improvement of the quality of struvite crystals recovered from a mixture of human urine and municipal sewage via a novel two-step precipitation method
	Huang, Lijuan 4; Liu, Xiaoning 1; Hu, Zhengyi 2,4; Wen, Guoqi 3,4
刊名	ENVIRONMENTAL TECHNOLOGY & INNOVATION
	2018-11-01
卷号	12 页码:80-90
关键词	Magnesium ammonium phosphate Chemical precipitation Heavy metals Magnesium source Wastewater streams
ISSN号	2352-1864
DOI	10.1016/j.eti.2018.08.003
英文摘要	Struvite recovered from waste streams has significant value as a sustainable slow-release fertilizer for agriculture production. However, there are two limiting factors for the large-scale use of struvite: the cost of magnesium (Mg) sources and the heavy metals in recovered struvite. In our study, laboratory experiments were conducted to investigate the feasibility of recovering phosphorus (P) from a mixture of hydrolyzed urine and municipal sewage without adding Mg salts. Additionally, a novel two-step struvite precipitation method was used to improve struvite quality. Results showed that 92.52% of the PO43--P in the mixture was recovered when volumetric ratio of urine to municipal sewage (VRUS) was 0.2, stirring speed was 180 rpm, and hydraulic retention time was 30 min. For the novel precipitation method, metal ions were removed during the first-step pre-precipitation procedure at VRUS of 0.05 and the P was recovered in the second-step struvite precipitation procedure at a VRUS of 0.2. The concentrations of cadmium, chromium, lead, and mercury in recovered struvite were below the regulatory limit for mineral P fertilizer in China (GB/T 23349-2009). This means that the recovered struvite can be used in agricultural production. Therefore, the proposed novel two-step precipitation method is a feasible, economical, and promising approach for recovering high-quality struvite from a mixture of urine and municipal sewage without the addition of Mg compounds. (C) 2018 Elsevier B.V. All rights reserved.
资助项目	National Key Research and Development Plan of China[2016YFD0800100] ; Key Projects in the National Science and Technology Pillar Program of China[2012BAJ24B06-2B]
WOS研究方向	Biotechnology & Applied Microbiology ; Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000449306000007
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/6068]
专题	中国科学院武汉植物园
通讯作者	Hu, Zhengyi
作者单位	1.Chinese Acad Sci, Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan 430074, Hubei, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 3.Univ Laval, Dept Soils & Agrifood Engn, Quebec City, PQ G1V 0A6, Canada 4.Univ Chinese Acad Sci, Coll Resources & Environm, 19A,Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Huang, Lijuan,Liu, Xiaoning,Hu, Zhengyi,et al. Improvement of the quality of struvite crystals recovered from a mixture of human urine and municipal sewage via a novel two-step precipitation method[J]. ENVIRONMENTAL TECHNOLOGY & INNOVATION,2018,12:80-90.
APA	Huang, Lijuan,Liu, Xiaoning,Hu, Zhengyi,&Wen, Guoqi.(2018).Improvement of the quality of struvite crystals recovered from a mixture of human urine and municipal sewage via a novel two-step precipitation method.ENVIRONMENTAL TECHNOLOGY & INNOVATION,12,80-90.
MLA	Huang, Lijuan,et al."Improvement of the quality of struvite crystals recovered from a mixture of human urine and municipal sewage via a novel two-step precipitation method".ENVIRONMENTAL TECHNOLOGY & INNOVATION 12(2018):80-90.