Environmental assessment of nutrient recycling from biological pig slurry treatment - Impact of fertilizer substitution and field emissions

被引：43

作者：

Brockmann, Doris ^{[1
]}

Hanhoun, Mary ^{[1
]}

Negri, Ophelie ^{[1
]}

Helias, Arnaud ^{[1
,2
]}

机构：

[1] INRA, UR050, Lab Biotechnol Environm, F-11100 Narbonne, France

[2] Montpellier SupAgro, F-34060 Montpellier 1, France

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 163卷

关键词：

Pig slurry treatment; Nutrient recycling; Field emissions; Mineral fertilizer equivalent; Life cycle assessment; LIFE-CYCLE ASSESSMENT; CONSEQUENCES; MANURE; MANAGEMENT; NITROGEN; TERM; NH3; N2O; CH4;

D O I：

10.1016/j.biortech.2014.04.032

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Pig slurry treatment is an important means in reducing nitrogen loads applied to farmland. Solid phase separation prior to biological treatment further allows for recovering phosphorus with the solid phase. The organic residues from the pig slurry treatment can be applied as organic fertilizers to farmland replacing mineral fertilizers. The environmental impacts of nutrient recycling from aerobic, biological pig slurry treatment were evaluated applying the life cycle assessment (LCA) methodology. LCA results revealed that direct field emissions from organic fertilizer application and the amount of avoided mineral fertilizers dominated the environmental impacts. A modified plant available nitrogen calculation (PAN) was introduced taking into account calculated nitrogen emissions from organic fertilizer application. Additionally, an equation for calculating the quantity of avoided mineral fertilizers based on the modified PAN calculation was proposed, which accounted for nitrogen emissions from mineral fertilizer application. (c) 2014 Elsevier Ltd. All rights reserved.

引用

页码：270 / 279

页数：10

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