Journal
BIOMOLECULES
Volume 10, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/biom10040581
Keywords
greenhouse gas; NH3; tannin-furanic foam; liquid manure; natural polyphenol; agriculture; emission reduction
Categories
Funding
- AWS (Austrian Wirtschaftsservice) [P1727558-IWB01]
- EFRE (Europaischer Fonds zur regionalen Entwicklung) Project IWB (Investitionen in Wachstum und Beschaftigung) Zentrum Smart Materials
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With the extensive use of nitrogen-based fertilizer in agriculture, ammonia emissions, especially from cattle manure, are a serious environmental threat for soil and air. The European community committed to reduce the ammonia emissions by 30% by the year 2030 compared to 2005. After a moderate initial reduction, the last report showed no further improvements in the last four years, keeping the 30% reduction a very challenging target for the next decade. In this study, the mitigation effect of different types of tannin and tannin-based adsorbent on the ammonia emission from manure was investigated. Firstly, we conducted a template study monitoring the ammonia emissions registered by addition of the tannin-based powders to a 0.1% ammonia solution and then we repeated the experiments with ready-to-spread farm-made manure slurry. The results showed that all tannin-based powders induced sensible reduction of pH and ammonia emitted. Reductions higher than 75% and 95% were registered for ammonia solution and cattle slurry, respectively, when using flavonoid-based powders. These findings are very promising considering that tannins and their derivatives will be extensively available due to the increasing interest on their exploitation for the synthesis of new-generation green materials.
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