Loading...
Please wait, while we are loading the content...
Similar Documents
Comparando as emissões de gases de efeito estufa nas etapas da cadeia produtiva do etanol brasileiro.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Lopes, Celso Júnior Roseghini |
| Copyright Year | 2011 |
| Abstract | This thesis adopts the Renewable Transport Fuel Obligation (RTFO) methodology, developed by the Renewable Fuels Agency (RFA, 2008), to quantify the volume of greenhouse gases that are emitted during the following stages of the ethanol life-cycle: 1) sugarcane farm management, 2) transportation of the raw material from the field to the mill, 3) industrial processing, 4) co-generation of electricity, and 5) logistics to the primary storage base. The methodology is applied over five different regions of the State of São Paulo, the largest ethanol producing State in Brazil: Araçatuba, Assis, Ribeirão Preto, Jaú e Piracicaba. Furthermore, this thesis aims to exam the following impacts related to the greenhouse gases emitted by the stages of ethanol life-cycle: (1) sugar production location; (2) usage of different fuels at the stage of sugarcane farm management; (3) extinction of the practice of burning the sugarcane field during the pre-harvest; and (4) utilization of intermodal logistics in order to transport the end-product to a primary storage base. In the “base scenario”, it is assumed 1) the utilization of diesel oil in the farm management of sugarcane, 2) the practice of previously burning the sugarcane field in the pre-harvest and 3) the road logistics to transport ethanol from the producing regions to a primary storage base located in the port of Santos-SP. To analyze the sensibility of emission parameters, other scenarios comprehend the possible combinations between the usage of biodiesel in farm management (B20ou B100), as well as the extinction of the practice of burning the sugarcane field in the pre-harvest and road-rail logistics. It was verified that, on average, regardless of the analyzed scenario, the largest portion of greenhouse gas emissions during the ethanol life cycle is concentrated at the sugarcane farm management stage. Due to the intrinsic characteristics of the soil and the required operations management, the emissions differ between regions (amplitude of 60 kg CO2e/ton of ethanol). Moreover, when both, road logistics and road-rail intermodality to transport the product to Santos-SP are considered, this stage represents 51% and 62%, respectively. The utilization of road-rail transportation intermodality to distribute ethanol contributes to the reduction of greenhouse gas emission. By considering the average of analyzed scenarios, this reduction achieves 13% during the life cycle and 74% only during the logistics stage. Finally, it was observed that there is a reduction on the volume of gases emitted into the atmosphere as a result of synergy among the use of biodiesel B100 in sugarcane farm management, the extinction of the practice of burning the sugarcane field in the preharvest and the utilization of intermodal logistic in order to transport the product to a primary storage base in Santos-SP. On average, the emitted volume of greenhouse gas decreases by 43% in the life cycle of ethanol. |
| File Format | PDF HTM / HTML |
| DOI | 10.11606/D.3.2011.tde-22032012-121655 |
| Alternate Webpage(s) | https://teses.usp.br/teses/disponiveis/3/3148/tde-22032012-121655/publico/Dissertacao_Celso_J_R_Lopes.pdf |
| Alternate Webpage(s) | https://doi.org/10.11606/D.3.2011.tde-22032012-121655 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
