Struvite—An Innovative Fertilizer from Anaerobic Digestate Produced in a Bio-Refinery

Magdalena Szymańska, Ewa Szara, Adam Wąs, Tomasz Sosulski, Gijs W.P. van Pruissen and René L. Cornelissen
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Magdalena Szymańska: Department of Soil Environment Sciences, Warsaw University of Life Sciences—SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland
Ewa Szara: Department of Soil Environment Sciences, Warsaw University of Life Sciences—SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland
Adam Wąs: Department of Economics and Organisation of Enterprises, Warsaw University of Life Sciences—SGGW, Nowoursynowska 166, 02-787 Warsaw, Poland
Tomasz Sosulski: Department of Soil Environment Sciences, Warsaw University of Life Sciences—SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland
Gijs W.P. van Pruissen: Cornelissen Consulting Services BV, Binnensingel 3, 7411 PL Deventer, The Netherlands
René L. Cornelissen: Cornelissen Consulting Services BV, Binnensingel 3, 7411 PL Deventer, The Netherlands

Energies, 2019, vol. 12, issue 2, 1-9

Abstract: This paper presents the results of a pot experiment aimed at the assessment of the fertilizer value of struvite, a precipitation product obtained from a liquid fraction of the digestate. The effects of struvite (STR), struvite + ammonium sulphate (STR + N) and ammonium phosphate (AP) treatments were examined on maize and grass cultivation on silty loam and loamy sand soil. The crop yields were found to depend on both the soil type and experimental treatment. Crop yields produced under STR and STR + N exceeded those under the control treatments by respectively 66% and 108% for maize, and 94% and 110% for grass. Crop yields under STR + N were similar or greater than those under the AP treatment. The nitrogen recovery by maize and grass reached respectively 68% and 62% from the struvite and 78% and 52% from AP. The phosphorus recovery by maize and grass reached 7.3% and 4.8%, respectively, from struvite (i.e., STR and STR + N), which was lower than that from the AP (18.4% by maize and 8.1% by grass).

Keywords: struvite precipitation; biogas plant; farm bio-refinery; P and N recovery; fertilizer value (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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