Journal
RESOURCES-BASEL
Volume 9, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/resources9050057
Keywords
Arundo donax; biogas; paludiculture; pretreatment; sustainable agriculture Typha angustifolia; Typha latifolia
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Funding
- FACCE-JPI ERA-NET Plus on Climate Smart Agriculture (project CINDERELLA)
- Carlsberg Foundation [CF15-0330]
- Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning (FORMAS) [155-2014-1745]
- German Federal Minister of Education and Research [031A545]
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Phragmites australis, Typha latifolia, T. angustifolia and Arundo donax are tall wetland graminoids with the potential to replace fossil fuels under sustainable cultivation conditions. We investigated the biomethane (CH4) production of these four species, including four different genotypes of P. australis, which represent the high intraspecific diversity of European reed. All plants were grown under three different macronutrient supplies (no nutrients added, an equivalent of 75 kg N ha(-1) year(-1) added and an equivalent of 500 kg N ha(-1) year(-1) added). Biomethane production was measured in four independent batch digestion tests. Across all experiments, fertilization regime had little effect on CH4 yield, which was on average 222 +/- 31 L kg(-1) volatile solids (VS). The lowest yield was produced by T. angustifolia (140 L kg(VS)(-1)) receiving no nutrients, while the highest yield was produced by A. donax (305 L kg(VS)(-1)) in the highest nutrient treatment. The intraspecific diversity of P. australis did not affect biomethane production. All P. australis genotypes produced on average 226 +/- 19 L CH4 kg(VS)(-1), which, although high, was still lower than conventional biogas species. The biomass production of P. australis was less increased by fertilization than that of Typha sp. and A. donax, but all species had similar biomass without fertilization.
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