Effects of Hydrochar, Digestate, Synthetic Fertilizer on Soil Greenhouse Gas Fluxes in Miscanthus x giganteus Grown as Advanced Biofuel Feedstock
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| Language: | English |
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Ohio University / OhioLINK
2019
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| Online Access: | http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1557220009015982 |
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ndltd-OhioLink-oai-etd.ohiolink.edu-ohiou15572200090159822021-09-02T05:10:38Z Effects of Hydrochar, Digestate, Synthetic Fertilizer on Soil Greenhouse Gas Fluxes in Miscanthus x giganteus Grown as Advanced Biofuel Feedstock Adjuik, Toby A. Environmental Studies Alternative Energy Agriculture Biogeochemistry Climate Change Energy Soil Sciences Miscanthus giganteus digestate hydrochar synthetic nitrogen fertilizer advanced biofuel greenhouse gases flux CO2 CH4 N2O Miscanthus x giganteus (miscanthus), a perennial rhizomatous grass with a C4 photosynthetic pathway, has the potential to reduce greenhouse gas (GHG) emissions as it sequesters carbon into soil. Although fertilizer application to miscanthus sometimes increases yield, especially after five growing seasons, unintended impacts of GHG emissions resulting from the application of fertilizer has also been documented. This study evaluated the effects of four different fertilization treatments (digestate from a biodigester, synthetic nitrogen fertilizer, hydrochar from hydrothermal carbonization of digestate, and a control) on soil GHG emissions and biomass yield of an established miscanthus stand grown on abandoned agricultural land. Soil greenhouse gas fluxes (including CH4, CO2, and N2O) were sampled in all treatments using the static chamber methodology. There were no significant differences in biomass yield among the four treatments. Average biomass yield varied from 20.2 Mg/ha to 23.5 Mg/ha between the four treatments. Even though there was no significant difference between CO2 fluxes in the four treatments over the growing season, the hydrochar treatment reduced CO2 fluxes by up to 34% compared to the control treatment. Applying digestate to miscanthus resulted in a CH4 source while nitrogen and hydrochar acted as CH4 sinks. Overall, fertilization did not improve biomass yield but the hydrochar treatment appeared to be a better alternative at reducing GHG fluxes when compared to the other treatments. 2019-09-18 English text Ohio University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1557220009015982 http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1557220009015982 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
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NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Environmental Studies Alternative Energy Agriculture Biogeochemistry Climate Change Energy Soil Sciences Miscanthus giganteus digestate hydrochar synthetic nitrogen fertilizer advanced biofuel greenhouse gases flux CO2 CH4 N2O |
| spellingShingle |
Environmental Studies Alternative Energy Agriculture Biogeochemistry Climate Change Energy Soil Sciences Miscanthus giganteus digestate hydrochar synthetic nitrogen fertilizer advanced biofuel greenhouse gases flux CO2 CH4 N2O Adjuik, Toby A. Effects of Hydrochar, Digestate, Synthetic Fertilizer on Soil Greenhouse Gas Fluxes in Miscanthus x giganteus Grown as Advanced Biofuel Feedstock |
| author |
Adjuik, Toby A. |
| author_facet |
Adjuik, Toby A. |
| author_sort |
Adjuik, Toby A. |
| title |
Effects of Hydrochar, Digestate, Synthetic Fertilizer on Soil Greenhouse Gas Fluxes in Miscanthus x giganteus Grown as Advanced Biofuel Feedstock |
| title_short |
Effects of Hydrochar, Digestate, Synthetic Fertilizer on Soil Greenhouse Gas Fluxes in Miscanthus x giganteus Grown as Advanced Biofuel Feedstock |
| title_full |
Effects of Hydrochar, Digestate, Synthetic Fertilizer on Soil Greenhouse Gas Fluxes in Miscanthus x giganteus Grown as Advanced Biofuel Feedstock |
| title_fullStr |
Effects of Hydrochar, Digestate, Synthetic Fertilizer on Soil Greenhouse Gas Fluxes in Miscanthus x giganteus Grown as Advanced Biofuel Feedstock |
| title_full_unstemmed |
Effects of Hydrochar, Digestate, Synthetic Fertilizer on Soil Greenhouse Gas Fluxes in Miscanthus x giganteus Grown as Advanced Biofuel Feedstock |
| title_sort |
effects of hydrochar, digestate, synthetic fertilizer on soil greenhouse gas fluxes in miscanthus x giganteus grown as advanced biofuel feedstock |
| publisher |
Ohio University / OhioLINK |
| publishDate |
2019 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1557220009015982 |
| work_keys_str_mv |
AT adjuiktobya effectsofhydrochardigestatesyntheticfertilizeronsoilgreenhousegasfluxesinmiscanthusxgiganteusgrownasadvancedbiofuelfeedstock |
| _version_ |
1719474123181129728 |