TY - JOUR

T1 - Cold season ammonia emissions from land spreading with anaerobic digestates from biogas production

AU - Köster, Jan Reent

AU - Dittert, Klaus

AU - Mühling, Karl-Hermann

AU - Kage, Henning

AU - Pacholski, A.

PY - 2014/2/1

Y1 - 2014/2/1

N2 - Anaerobic digestates (AD) from biogas production are applied to agricultural land as organic fertilizers, but pose an ammonia (NH 3) emission source. However, data about NH 3 emissions of cold season AD land spreading is still lacking. Therefore, in the present study NH 3 emissions of AD application under winter conditions were determined. AD was applied via trail hoses to a field plot of 27ha in Northern Germany during the winter with temperatures around the freezing point and partly frozen soil. NH 4 + N application rate was, including a preceding urea application, 123kg NH 4 + and urea N ha -1. The NH 3 volatilization was monitored using Open Path Fourier Transform Infrared spectroscopy in combination with a micrometeorological transport model. Cumulative NH 3 volatilization during the six day measurements was 17.5kgNH 3 Nha -1 which corresponds to 33.1% of the NH 4 + N in applied AD. This NH 3 loss is relatively high for low temperature conditions and was most likely caused by the frozen soil restricting AD infiltration.

AB - Anaerobic digestates (AD) from biogas production are applied to agricultural land as organic fertilizers, but pose an ammonia (NH 3) emission source. However, data about NH 3 emissions of cold season AD land spreading is still lacking. Therefore, in the present study NH 3 emissions of AD application under winter conditions were determined. AD was applied via trail hoses to a field plot of 27ha in Northern Germany during the winter with temperatures around the freezing point and partly frozen soil. NH 4 + N application rate was, including a preceding urea application, 123kg NH 4 + and urea N ha -1. The NH 3 volatilization was monitored using Open Path Fourier Transform Infrared spectroscopy in combination with a micrometeorological transport model. Cumulative NH 3 volatilization during the six day measurements was 17.5kgNH 3 Nha -1 which corresponds to 33.1% of the NH 4 + N in applied AD. This NH 3 loss is relatively high for low temperature conditions and was most likely caused by the frozen soil restricting AD infiltration.

KW - Sustainability Science

KW - Backward Lagrangian stochastic dispersion model

KW - BLS

KW - Micrometeorology

KW - Northern Germany

KW - Open path FTIR

KW - Ecosystems Research

UR - http://www.scopus.com/inward/record.url?scp=84889610569&partnerID=8YFLogxK

U2 - 10.1016/j.atmosenv.2013.11.037

DO - 10.1016/j.atmosenv.2013.11.037

M3 - Journal articles

AN - SCOPUS:84889610569

VL - 84

SP - 35

EP - 38

JO - Atmospheric Environment

JF - Atmospheric Environment

SN - 1352-2310

ER -