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Open AccessArticle

Ammonium Sulphate from a Bio-Refinery System as a Fertilizer—Agronomic and Economic Effectiveness on the Farm Scale

1
Department of Agricultural Chemistry, Warsaw University of Life Sciences—SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland
2
Department of Economics and Organisation of Enterprises, Warsaw University of Life Sciences—SGGW, Nowoursynowska 166, 02-787 Warsaw, Poland
3
Cornelissen Consulting Services BV, Binnensingel 3, 7411 PL Deventer, The Netherlands
*
Author to whom correspondence should be addressed.
Energies 2019, 12(24), 4721; https://doi.org/10.3390/en12244721
Received: 30 October 2019 / Revised: 4 December 2019 / Accepted: 7 December 2019 / Published: 11 December 2019
(This article belongs to the Special Issue Anaerobic Digestion for the Production of Energy and Chemicals)
This paper presents the results of a pot experiment aimed at the assessment of the agronomic and economic effectiveness of ammonium sulphate from an agro bio-refinery (Bio-AS). The Bio-AS was obtained by means of the ammonia stripping process from effluent after struvite precipitation from a liquid fraction of digestate. The agronomic effectiveness of Bio-AS in a pot experiment with maize and grass in two different soils, silty loam (SL) and loamy sand (LS), was investigated. The fertilising effect of Bio-AS was compared to commercial ammonium sulphate fertilizer (Com-AS) and control treatment (without fertilisation). The crop yields were found to depend on both soil type and nitrogen treatment. Crop yields produced under Bio-AS and Com-AS exceeded those under control treatments, respectively for SL and LS soils, by 88% and 125% for maize and 73% and 94% for grass. Crop yields under Bio-AS were similar to those under the Com-AS treatment. The fertilizer use of Bio-AS affected the chemical composition of plants and soil properties similarly as Com-AS. This suggests that Bio-AS from a bio-refinery can replace industrial ammonium sulphate, resulting in both economic and environmental benefits. View Full-Text
Keywords: digestate; nitrogen removal; ammonia stripping; agro bio-refinery; ammonium sulphate; fertilizer value; crop yield; environmental sustainability digestate; nitrogen removal; ammonia stripping; agro bio-refinery; ammonium sulphate; fertilizer value; crop yield; environmental sustainability
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Szymańska, M.; Sosulski, T.; Szara, E.; Wąs, A.; Sulewski, P.; van Pruissen, G.W.; Cornelissen, R.L. Ammonium Sulphate from a Bio-Refinery System as a Fertilizer—Agronomic and Economic Effectiveness on the Farm Scale. Energies 2019, 12, 4721.

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