Parallel Session E – University of Copenhagen

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Parallel Session E

Yong Hou; Wageningen University; ReUseWaste: Feed use and animal excretion in EU-27

MAXWELL OWUSU-TWUM; University of Trás-Os-Montes and Alto Douro (UTAD), ReUseWaste: EFFECT OF SLURRY TREATMENTS ON GASEOUS EMISSIONS AND FORAGE YIELD AND QUALITY

John Verhoeven; Wageningen UR; INEMAD: Energierijk; Evaluation sustainability

Gwen Willeghems; Ghent University; INEMAD: The impact of concentrated pig production: a spatial environmental analysis

Rapporteurs Report

Session E focused on the effect of the different waste treatments on environmental aspects e.g. greenhouse gas and ammonia emissions.

ReUseWaste fellow Yong Hou developed a uniform model that analysis feed use and estimates the excreted N by the animals and concludes that feed had a high impact in the excreted N.

Maxwell Owusu-Twum (ReUseWaste fellow) studied the effect of mechanical separation and other treatments of slurry, on GHG emissions as well as the yield and quality of maize after their application. He concluded that the acidification of the liquid fraction of slurry reduced the N losses and at the same time increased the yield and the quality of maize.

John Verhoeven (INEMAD) investigated different scenarios of waste treatments and evaluated the sustainability based on GHG and N emissions and concluded that it is necessary to achieve a balance between economics and sustainability.

Gwen Willeghems (INEMAD) studied the environmental impact that 3 different scenarios (transportation of excess raw manure, separation and biological treatment, and only separation) in Belgium with calculations based on CO2 emissions. She concluded that the most important factor in the reduction of CO2 emissions is the manure storage systems.

Compiled by George Bekiaris

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