Related Papers
Land
Land Use and Management Effects on Sustainable Sugarcane-Derived Bioenergy
Glaucia Mendes Souza
Bioenergy is an important and feasible option for mitigating global warming and climate change. However, large-scale land-use change (LUC) to expand bioenergy crops, such as sugarcane, raises concerns about the potential negative environmental and socioeconomic side effects. Such effects are context-specific, and depending on the LUC scenario and management practices, several co-benefits can be attained. We reviewed the literature and discussed how LUC and best management practices affect key components of sustainability (e.g., soil health, soil carbon (C) sequestration, greenhouse gas emissions (GHG) emissions, nutrient cycling, water quality, among others) of sugarcane-derived bioenergy production in Brazil. Sugarcane expansion has occurred predominantly over pasture areas, although converting croplands could be also an environmentally feasible option. The land transition from low-productivity pastures to sugarcane cultivation seems to be a sustainable pathway to increase bioenerg...
GCB Bioenergy
Multilocation changes in soil carbon stocks from sugarcane straw removal for bioenergy production in Brazil
João Luis Nunes Carvalho
Scientia Agricola
Crop residue harvest for bioenergy production and its implications on soil functioning and plant growth: A review
2018 •
paul melo
BioEnergy Research
Electricity Production from Sugarcane Straw Recovered Through Bale System: Assessment of Retrofit Projects
2019 •
Marcos Watanabe
Additional Greenhouse Gas Emissions and Offset Potential from Sugarcane Straw Recovery for Bioenergy Production in Southern Brazil
2021 •
Ricardo Bordonal
This study was designed to assess the additional greenhouse (GHG) emissions including measurements of soil CO 2 -C emissions in sugarcane areas plus emissions associated with the recovery and transport operations of straw bales up to the factory gate for electricity production, contrasting with leaving all straw on the soil surface. The total additional GHG emissions considering the main sources evaluated ( i.e ., soil CO 2 -C, diesel use and N 2 O from straw), was estimated at 1,465 kg CO 2 eq ha -1 , resulting an emission factor of 212. 6 kg CO 2 eq ton -1 of straw recovered. Applying the parameters cited in this study for electricity or 2G ethanol production (GHG balance of emission and offset potential), our results showed that straw-based for electricity production would result in additional GHG emissions of (+) 860 kg CO 2 eq ha -1 . In contrast, applying the same study parameters for 2G ethanol production replacing gasoline, an avoided GHG emission of (-) 2,316 kg CO 2 eq ha ...
Carbon Footprints
Greenhouse gas emissions and offset potential from sugarcane straw for bioenergy production in Brazil
2023 •
Carbon Footprints, Susantha Jayasundara, Ricardo de Oliveira Bordonal
This study aims to assess the additional Greenhouse gas (GHG) emissions affected by straw removal from the soil surface in sugarcane areas, including measurement of short-term soil CO2-C emissions plus emissions associated with the recovery and transport operations of straw bales until to the industry gate (diesel emissions) and estimated soil N2O emission, comparing with leaving all straw on the soil surface. Taking into account the main sources evaluated (soil CO2, diesel and N2O from straw), the total additional GHG emissions from the recovery of 6.9 Mg Dry Matter ha-1 (27%) was estimated at 1423 kg CO2eq ha-1, resulting in a carbon footprint of 206.2 kg CO2eq per megagram (Mg) of straw recovered. Applying the parameters cited in this study for electricity generation (GHG emission and offset potential), our results showed an additional GHG emission of (+) 860 kg CO2eq ha-1. Applying the same parameters for second generation (2G) ethanol production replacing gasoline, an avoided GHG emission of (-) 2316 kg CO2eq ha-1 could be achieved. The route of recovering 27% of sugarcane straw from the soil surface through bale system for bioelectricity production using the technical parameters and industrial efficiency rate of this case study resulted in a C footprint of 347 kg CO2eq MWh-1. Improving the efficiency rate for straw conversion in bioelectricity based on its lower heating value could reduce its C footprint to 62.26 kg CO2eq MWh-1 produced. For sugarcane straw recovery at the first cutting cycle in clay soil, the option of producing ethanol 2G could offset GHG emissions once replacing fossil gasoline, resulting in a C footprint of 0.86 kg CO2eq L-1 of 2G ethanol in the agricultural phase, an option to contribute to better sustainability of sugarcane straw recovery, supporting renewable and sustainable bioenergy systems, and reducing the impacts of Global Climate Change. Keywords Biomass, renewable energy, soil management, harvest systems, climate change
BioEnergy Research
Can reduced tillage sustain sugarcane yield and soil carbon if straw is removed?
João Luis Nunes Carvalho
Can alternative N-fertilization methods influence GHG emissions and biomass production in sugarcane fields
Clovis Daniel Borges
This study evaluated the effect of different N fertilizer application methods on N 2 O and CH 4 emissions and on sugarcane biomass yields over two successive growing seasons. Treatments included three methods of N fertilizer (120 kg ha −1 N) application: 1) above the straw layer; 2) below the straw layer; 3) incorporated into the soil (at 0.1-m soil depth) below the straw layer; and 4) no N application (control). Sugarcane yield for the above straw treatment was, on average, 12% and 15% lower than below the straw and incorporated into the soil, respectively. Emissions of CH 4 were very low and unaffected by N fertilizer placement. The method and timing of N application influenced N 2 O emissions. For both years, higher N 2 O emissions were observed from the above straw, followed by below straw and incorporated treatments. Except for the above straw treatment during the wet season, the N 2 O emission factors ranged from 0.08 to 0.62 and were lower than the IPCC default value (1%). The intensity of N 2 O emissions was, on average, 7.45, 3.97 and 3.3 kg CO 2 eq Mg stalk −1 for N applied above straw, below straw and incorporated into the soil, respectively. Changes in the N fertilizer placement method and on the timing of application can significantly reduce GHG emissions during sugarcane production, making a significant contribution toward a cleaner production of sugarcane ethanol.
Environmental and Climate Security
Heather Youngs
Journal of Cleaner Production
Greenhouse gas emission estimate in sugarcane irrigation in Brazil: is it possible to reduce it, and still increase crop yield?
2015 •
Ricardo Bordonal
