Manure treatment with acidic liquid biowastes for reducing greenhouse gases and ammonia emissions

Mohamed Samer, Omar Hijazi, Essam Abdelsalam, Jochen G. Wiecha, Kathrin L. Ziegler, Heinz Bernhardt

Publikation: KonferenzbeitragPapierBegutachtung

1 Zitat (Scopus)

Abstract

Livestock manure is the main source of ammonia (NH3) emissions and an important source of greenhouse gases (GHG) especially methane (CH4) and nitrous oxide (N2O). Ammonia emissions contribute to eutrophication and acidification of water, soils and ecosystems. The greenhouse gases contribute to the global warming. These gaseous emissions can be reduced by controlling the pH-value of manure. Acidifying the manure can reduce CH4, N2O and NH3 emissions. Inorganic acids are feasible, but have several disadvantages, e.g. soil contaminants. The use of organic acids is an efficient but expensive method; therefore using the biowastes of citrus, orange and milk industries -which already contain organic acids-, is highly feasible. The objective of this research is to investigate the effects acidic liquid biowastes as manure additives on the emissions of CH4, N2O and NH3. Dairy cattle manure was treated with acidic liquid biowastes (whey and waste of citrus and orange juices industry) and the gas flux of CH4, N2O and NH3 were quantified using a specially de-signed gas detection system which consists of several flasks and a multi-gas monitor. The results showed that the gas fluxes emitted from manure treated with waste of citrus juice industry were 13, 0.219 and 2.523 g m-2 day-1 for CH4, N2O and NH3 respectively. The gas fluxes emitted from manure treated with waste of orange juice industry were 13.58, 0.223 and 2.581 g m-2 day-1 for CH4, N2O and NH3 respectively. The gas fluxes emitted from manure treated with whey were 17.45, 0.279 and 3.063 g m-2 day-1 for CH4, N2O and NH3 respectively. The gas fluxes emitted from the control sample (mixture of manure and water) were 58.21, 0.347 and 18.9 g m-2 day-1 for CH4, N2O and NH3 respectively. Consequently, manure treatment with acidic liquid biowastes enabled high reduction rates of gaseous emissions from manure.

OriginalspracheEnglisch
DOIs
PublikationsstatusVeröffentlicht - 2019
Veranstaltung2019 ASABE Annual International Meeting - Boston, USA/Vereinigte Staaten
Dauer: 7 Juli 201910 Juli 2019

Konferenz

Konferenz2019 ASABE Annual International Meeting
Land/GebietUSA/Vereinigte Staaten
OrtBoston
Zeitraum7/07/1910/07/19

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