气候变化领域集成服务门户(CCPortal): Plant-based diets add to the wastewater phosphorus burden

CCPortal

DOI	10.1088/1748-9326/ab9271
	Plant-based diets add to the wastewater phosphorus burden
	Forber K.J.; Rothwell S.A.; Metson G.S.; Jarvie H.P.; Withers P.J.A.
发表日期	2020
ISSN	17489318
卷号	15 期号:9
英文摘要	Global food production and current reliance on meat-based diets requires a large share of natural resource use and causes widespread environmental pollution including phosphorus (P). Transitions to less animal-intensive diets address a suite of sustainability goals, but their impact on society's wastewater P burden is unclear. Using the UK as our example, we explored historical diet changes between 1942 and 2016, and how shifting towards plant-based diets might impact the P burden entering wastewater treatment works (WWTW), and subsequent effluent P discharge to receiving water bodies. Average daily per capita P intake declined from its peak in 1963 (1599 mg P pp-1 d-1) to 1354 mg P pp-1 d-1 in 2016. Since 1942, the contribution of processed foods to total P consumption has increased from 21% to 52% in 2016, but consumption of total animal products has not changed significantly. Scenario analysis indicated that if individuals adopted a vegan diet or a low-meat ('EAT-Lancet') diet by 2050, the P burden entering WWTW increased by 17% and 35%, respectively relative to baseline conditions in 2050. A much lower P burden increase (6%) was obtained with a flexitarian diet. An increasing burden of P to WWTW threatens greater non-compliance with regulatory targets for P discharge to water, but also presents an opportunity to the wastewater industry to recycle P in the food chain, and reduce reliance on finite phosphate rock resources. Sustainable diets that reduce food system P demand pre-consumption could also provide a source of renewable fertilizers through enhanced P recovery post-consumption and should be further explored. © 2020 The Author(s). Published by IOP Publishing Ltd.
语种	英语
scopus关键词	Animals; Effluent treatment; Phosphorus; Regulatory compliance; Sewage treatment plants; Sustainable development; Wastewater reclamation; Wastewater treatment; Base-line conditions; Environmental pollutions; Natural resource use; Plant-based diets; Receiving water bodies; Scenario analysis; Wastewater industry; Wastewater treatment works; Effluents; diet; phosphorus; plant; pollutant removal; wastewater treatment; Animalia
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153796
作者单位	Lancaster Environment Centre, Lancaster University, United Kingdom; Department of Physics,Chemistry and Biology, Theorectical Biology, Linköping University, Sweden; Dept. of Geography and Environmental Management, Water Institute, University of Waterloo, Canada
推荐引用方式 GB/T 7714	Forber K.J.,Rothwell S.A.,Metson G.S.,et al. Plant-based diets add to the wastewater phosphorus burden[J],2020,15(9).
APA	Forber K.J.,Rothwell S.A.,Metson G.S.,Jarvie H.P.,&Withers P.J.A..(2020).Plant-based diets add to the wastewater phosphorus burden.Environmental Research Letters,15(9).
MLA	Forber K.J.,et al."Plant-based diets add to the wastewater phosphorus burden".Environmental Research Letters 15.9(2020).