Exploring the Biomethane Potential of Different Industrial Hemp (<i>Cannabis sativa</i> L.) Biomass Residues
Industrial hemp stands out as a promising candidate for clean and sustainable biomass-to-bioenergy systems due to its multipurpose, high biomass yield and resource efficiency features. In this study, different hemp biomass residues (HBRs) were evaluated as a potential feedstock for renewable biometh...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-07-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/13/3361 |
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| author | Silvio Matassa Giovanni Esposito Francesco Pirozzi Stefano Papirio |
| author_facet | Silvio Matassa Giovanni Esposito Francesco Pirozzi Stefano Papirio |
| author_sort | Silvio Matassa |
| collection | DOAJ |
| description | Industrial hemp stands out as a promising candidate for clean and sustainable biomass-to-bioenergy systems due to its multipurpose, high biomass yield and resource efficiency features. In this study, different hemp biomass residues (HBRs) were evaluated as a potential feedstock for renewable biomethane production through anaerobic digestion (AD). The biochemical methane potential (BMP) of the raw and pretreated fibers, stalks, hurds, leaves and inflorescences was investigated by means of batch anaerobic tests. The highest BMP was obtained with the raw fibers (i.e., 422 ± 20 mL CH<sub>4</sub>·g VS<sup>−1</sup>), while hemp hurds (unretted), making up more than half of the whole hemp plant dry weight, showed a lower BMP value of 239 ± 10 mL CH<sub>4</sub>·g VS<sup>−1</sup>. The alkali pretreatment of unretted hurds and mechanical grinding of retted hurds effectively enhanced the BMP of both substrates by 15.9%. The mix of leaves and inflorescences and inflorescences alone showed low BMP values (i.e., 118 ± 8 and 26 ± 5 mL CH<sub>4</sub>·g VS<sup>−1</sup>, respectively) and a prolonged inhibition of methanogenesis. The latter could be overcome through NaOH pretreatment in the mix of leaves and inflorescences (+28.5% methane production). |
| first_indexed | 2024-03-10T18:45:46Z |
| format | Article |
| id | doaj.art-b03e0dc4dd05460d84d9af0b32522bf2 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T18:45:46Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-b03e0dc4dd05460d84d9af0b32522bf22023-11-20T05:32:02ZengMDPI AGEnergies1996-10732020-07-011313336110.3390/en13133361Exploring the Biomethane Potential of Different Industrial Hemp (<i>Cannabis sativa</i> L.) Biomass ResiduesSilvio Matassa0Giovanni Esposito1Francesco Pirozzi2Stefano Papirio3Department of Civil, Architectural and Environmental Engineering, University of Naples Federico II, via Claudio 21, 80125 Naples, ItalyDepartment of Civil, Architectural and Environmental Engineering, University of Naples Federico II, via Claudio 21, 80125 Naples, ItalyDepartment of Civil, Architectural and Environmental Engineering, University of Naples Federico II, via Claudio 21, 80125 Naples, ItalyDepartment of Civil, Architectural and Environmental Engineering, University of Naples Federico II, via Claudio 21, 80125 Naples, ItalyIndustrial hemp stands out as a promising candidate for clean and sustainable biomass-to-bioenergy systems due to its multipurpose, high biomass yield and resource efficiency features. In this study, different hemp biomass residues (HBRs) were evaluated as a potential feedstock for renewable biomethane production through anaerobic digestion (AD). The biochemical methane potential (BMP) of the raw and pretreated fibers, stalks, hurds, leaves and inflorescences was investigated by means of batch anaerobic tests. The highest BMP was obtained with the raw fibers (i.e., 422 ± 20 mL CH<sub>4</sub>·g VS<sup>−1</sup>), while hemp hurds (unretted), making up more than half of the whole hemp plant dry weight, showed a lower BMP value of 239 ± 10 mL CH<sub>4</sub>·g VS<sup>−1</sup>. The alkali pretreatment of unretted hurds and mechanical grinding of retted hurds effectively enhanced the BMP of both substrates by 15.9%. The mix of leaves and inflorescences and inflorescences alone showed low BMP values (i.e., 118 ± 8 and 26 ± 5 mL CH<sub>4</sub>·g VS<sup>−1</sup>, respectively) and a prolonged inhibition of methanogenesis. The latter could be overcome through NaOH pretreatment in the mix of leaves and inflorescences (+28.5% methane production).https://www.mdpi.com/1996-1073/13/13/3361anaerobic digestionhemphurdsinflorescencespretreatment |
| spellingShingle | Silvio Matassa Giovanni Esposito Francesco Pirozzi Stefano Papirio Exploring the Biomethane Potential of Different Industrial Hemp (<i>Cannabis sativa</i> L.) Biomass Residues Energies anaerobic digestion hemp hurds inflorescences pretreatment |
| title | Exploring the Biomethane Potential of Different Industrial Hemp (<i>Cannabis sativa</i> L.) Biomass Residues |
| title_full | Exploring the Biomethane Potential of Different Industrial Hemp (<i>Cannabis sativa</i> L.) Biomass Residues |
| title_fullStr | Exploring the Biomethane Potential of Different Industrial Hemp (<i>Cannabis sativa</i> L.) Biomass Residues |
| title_full_unstemmed | Exploring the Biomethane Potential of Different Industrial Hemp (<i>Cannabis sativa</i> L.) Biomass Residues |
| title_short | Exploring the Biomethane Potential of Different Industrial Hemp (<i>Cannabis sativa</i> L.) Biomass Residues |
| title_sort | exploring the biomethane potential of different industrial hemp i cannabis sativa i l biomass residues |
| topic | anaerobic digestion hemp hurds inflorescences pretreatment |
| url | https://www.mdpi.com/1996-1073/13/13/3361 |
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