A life cycle perspective of slurry acidification strategies under different nitrogen regulations
Artikel i vetenskaplig tidskrift, 2016

Livestock manure is a major contributor to ammonia and greenhouse gas emissions and treatment technologies such as slurry acidification can be used to reduce both. In this study, life cycle assessment was used to compare impact potentials of slurry acidification at either the pig housing or the field application stage with conventional slurry management. Furthermore, the effects of differences in environmental regulations concerning nitrogen application limits were analysed. The impact categories analysed were terrestrial eutrophication potential, climate change potential, marine eutrophication potential and toxicity potential. Slurry acidification reduced the terrestrial eutrophication potential by 71% for in-house acidification and by 30% for field acidification. Changes in regulatory plant-available nitrogen application limits resulted in changes in climate change potential and marine eutrophication potential, with lower limits favouring in-house acidification. Acidification can substantially reduce the environmental impacts of animal slurry, but the effect depends on the context of the regulatory regime.

Swine

Acidification

Life cycle assessment

Pig

Manure management

Slurry treatment

Författare

Marieke Ten Hoeve

Köbenhavns Universitet

Tays Nyord

Aarhus Universitet

Gregory Peters

Chalmers, Energi och miljö, Miljösystemanalys

Nicholas J Hutchings

Research Center Foulum

L S Jensen

Köbenhavns Universitet

S Bruun

Köbenhavns Universitet

Journal of Cleaner Production

0959-6526 (ISSN)

Vol. 127 591-599

Ämneskategorier

Naturresursteknik

DOI

10.1016/j.jclepro.2016.04.014

Mer information

Senast uppdaterat

2018-05-08