Nitrogen fertiliser production based on biogas - Energy input, environmental impact and land use

被引：47

作者：

Ahlgren, Serina ^{[1
]}

Bernesson, Sven ^{[1
]}

Nordberg, Ake ^{[1
]}

Hansson, Per-Anders ^{[1
]}

机构：

[1] Swedish Univ Agr Sci, Dept Energy & Technol, SE-75007 Uppsala, Sweden

来源：

BIORESOURCE TECHNOLOGY | 2010年 / 101卷 / 18期

关键词：

Agriculture; Nitrogen fertiliser production; Biogas; Life cycle assessment; BIOMASS;

D O I：

10.1016/j.biortech.2010.04.006

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The aim of the present paper was to investigate the land use, environmental impact and fossil energy use when using biogas instead of natural gas in the production of nitrogen fertilisers The biogas was assumed to be produced from anaerobic digestion of ley grass and maize. The calculations showed that 1 ha of agricultural land in south-west Sweden can produce 1.7 metric ton of nitrogen in the form of ammonium nitrate per year from ley grass, or 3 6 ton from maize The impact on global warming, from cradle to gate, was calculated to be lower when producing nitrogen fertiliser from biomass compared with natural gas Eutrophication and acidification potential was higher in the biomass scenarios The greatest advantage of the biomass systems however lies in the potential to reduce agriculture's dependency on fossil fuels In the biomass scenarios, only 2-4 MJ of primary fossil energy was required, while 35 MJ/kg N was required when utilising natural gas (C) 2010 Elsevier Ltd All rights reserved

引用

页码：7181 / 7184

页数：4

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