| Material flow analysis of phosphorus through food consumption in two megacities in northern China. | |
| | |
MedLine Citation:
|
PMID: 21349570 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
The key stocks and flows of phosphorus (P) through food consumption in Beijing and Tianjin, two megacities in northern China, were explored using a material flow analysis (MFA) approach to construct a static model of P metabolism. A total of 4498 t P has accumulated with 72% of P flow imported through food consumption eventually remaining in Beijing in 2008. Around 64% of the total inflow of P (2670 t) remained in Tianjin in 2008. P in the uncollected sewage from both urban and rural residents and the effluents from sewage treatment plants has significant negative effects on water quality. An average of 55% the P flow remained in the sewage sludge through urban food consumption. The key problems in P metabolism and management in megacities are identified based on the quantitative analysis of P cycling through food consumption. Relevant solutions for improving P recycling efficiency are also discussed. It is important to link P flows with environmental regulations and to establish a strong coordination between urban and rural areas for nutrient recycling to attain sustainable development of megacities. |
| | |
Authors:
|
Min Qiao; Yuan-Ming Zheng; Yong-Guan Zhu |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-2-22 |
Journal Detail:
|
Title: Chemosphere Volume: - ISSN: 1879-1298 ISO Abbreviation: - Publication Date: 2011 Feb |
Date Detail:
|
Created Date: 2011-2-25 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0320657 Medline TA: Chemosphere Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
|
Copyright © 2011 Elsevier Ltd. All rights reserved. |
Affiliation:
|
State Key Lab of Regional and Urban Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Degradation of chelating agents in aqueous solution using advanced oxidation process (AOP).
Next Document: Fate of organic micropollutants in the hyporheic zone of a eutrophic lowland stream: Results of a pr...