Biogas Generation from Maize and Cocksfoot Growing in Degraded Soil Enriched with New Zeolite Substrate

Mariola Chomczyńska, Małgorzata Pawłowska, Oliwia Szczepaniak and Ewelina Duma
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Mariola Chomczyńska: Environmental Engineering Faculty, Lublin University of Technology, Nadbystrzycka 40B Str., 20-618 Lublin, Poland
Małgorzata Pawłowska: Environmental Engineering Faculty, Lublin University of Technology, Nadbystrzycka 40B Str., 20-618 Lublin, Poland
Oliwia Szczepaniak: Environmental Engineering Faculty, Lublin University of Technology, Nadbystrzycka 40B Str., 20-618 Lublin, Poland
Ewelina Duma: Environmental Engineering Faculty, Lublin University of Technology, Nadbystrzycka 40B Str., 20-618 Lublin, Poland

Energies, 2022, vol. 15, issue 1, 1-13

Abstract: Degraded lands are potential areas for obtaining biomass which can serve as an energy source after its conversion into biogas. Thus, the studies on biogas production from maize and cocksfoot biomasses obtained from degraded soil supplemented with additions of new zeolite substrate (Z-ion as the nutrient carrier) and on arable soil (reference soil) were carried out during batch digestion tests. It was found that the biogas and biomethane potentials and specific energy of the test species growing in degraded soil enriched with Z-ion additions (1% and 5% v/v in the cases of cocksfoot and maize, respectively) did not differ significantly from the values of these parameters that were found for the plants growing in arable soil. The application of Z-ion to the degraded soil (especially in a dose of 5% v/v) resulted in an increase in the nitrogen content and decrease (below the lower optimum value) in the C/N ratio in the plant biomass. However, these changes did not negatively influence the final values of the biogas or methane potentials or the specific energy found for the maize biomass. Therefore, the study results indicated the usefulness of Z-ion substrate for improving the growth conditions for energy crops in degraded soils and, as a consequence, obtaining a plant feedstock suitable for the digestion process.

Keywords: biogas; anaerobic digestion; energy crops; Z-ion substrate; marginal and degraded soils (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: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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