| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Epagri-Chapecó; Epagri-Sede. |
|
Data corrente: |
19/09/2011 |
|
Data da última atualização: |
18/11/2011 |
|
Autoria: |
BOLL, M.G. |
|
Afiliação: |
Epagri |
|
Título: |
The role of microalgae as biodiesel feedstock in a tropical setting economics, agro-energy competitiveness and potential impacts on regional agricultural feedstock production. |
|
Ano de publicação: |
2011 |
|
Fonte/Imprenta: |
2011 |
|
Páginas: |
246 f. |
|
Idioma: |
Inglês |
|
Notas: |
Tese(Douctor of Philosophy of Hawaii, 2011 |
|
Conteúdo: |
The objective of this study is to obtain a realistic evaluation of the potential role of microalgae as a biodiesel feedstock in a tropical setting. First, microalgae economics are estimated, including the detailed design of a 400 ha microalgae open pond production farm together with the microalgae biomass and crude oil production costs calculations. Sensitivity analysis and a stochastic evaluation of the microalgae venture chances for profit are also included. Next, microalgae potential for biodiesel production is compared to traditional oil crops such as soybeans and African palm. This comparison is performed using the Northeast Region (NER) of Brazil as background. Six potential biodiesel feedstock sources produced in the NER and microalgae are compared considering selected environmental, economic and social sustainability indicators. Finally, in the third chapter, the study proposes a cropland allocation model for the NER. The model aims to offer insights to the decision maker concerning biofuel development strategies and their impact on regional agricultural feedstock production. In the model, cropland allocation among three agriculture feedstock sectors, namely staple food, commodity export and biofuel is optimized through the use of the multiple objective technique referred to as compromise programming (CP). Our results indicate a projected microalgae total production cost of R$ 78,359 ha-1 (US$43,533), which has a breakdown as follows: R$ 34,133 ha-1 (US$18,963) for operating costs and R$ 44,226 ha-1 (US$24,570) for overhead (ownership) costs. Our stochastic analysis indicates that microalgae production under the conditions assumed in the baseline scenario of this study has a 0% chance to present a positive NPV for a microalgae crude oil price of R$ 1.86. This price corresponds to an international oil price around US$ 77 bbl-1. To obtain a reasonable investment return (IRR = 12%) from the microalgae farm, an international oil price as high as US$ 461 bbl-1 is required. Despite the advantage of using about 14 times less cropland area (0.13 ha boe-1), microalgae presented significant disadvantages as compared to some of the traditional oil crops. Among these is the significant amount of N fertilizer and water demanded by microalgae production, namely 205 kg and 4,990 m3 boe-1, about 132% and 30% higher than the second highest value among the crops compared in this study, respectively. Optimized CP scenarios expanded annual cropland allocation to 14.58 million ha in the NER, year 2017, compared to 11.04 and 12.81 million ha in current (2007) and baseline (2017) scenarios, respectively. In comparison to the baseline scenario, cropland expansions allied to the shift of the commodities export dedicated cropland to the biofuel production sector in CP scenarios significantly increased the NER fuel autonomy (95%) and reduced its R$ 5,126 million reais deficit baseline comprehensive feedstock trade balance by 79%. Contrary to the concerns usually referred to biofuel development, our model indicates that in the NER case, it is the commodity export, rather than the staple food agriculture feedstock production sector, that is mostly affected by the biofuel cropland allocation demand. When compared to traditional oil crops, microalgae-based biodiesel scenarios could not significantly improve regional staple food autonomy, increasing this objective by 1% only. The NER fuel autonomy, in its turn, is positively impacted in the microalgae scenarios, but the increment as compared to the traditional oil crops is rather small, namely 2% and 7% in the B5 and B10 levels, respectively. These results indicate that the potential advantages expected for the microalgae-based biodiesel introduction did not materialize for the NER. It is concluded that the adoption of microalgae-based biodiesel is not an interesting biofuel alternative for the NER of Brazil for the next ten years. MenosThe objective of this study is to obtain a realistic evaluation of the potential role of microalgae as a biodiesel feedstock in a tropical setting. First, microalgae economics are estimated, including the detailed design of a 400 ha microalgae open pond production farm together with the microalgae biomass and crude oil production costs calculations. Sensitivity analysis and a stochastic evaluation of the microalgae venture chances for profit are also included. Next, microalgae potential for biodiesel production is compared to traditional oil crops such as soybeans and African palm. This comparison is performed using the Northeast Region (NER) of Brazil as background. Six potential biodiesel feedstock sources produced in the NER and microalgae are compared considering selected environmental, economic and social sustainability indicators. Finally, in the third chapter, the study proposes a cropland allocation model for the NER. The model aims to offer insights to the decision maker concerning biofuel development strategies and their impact on regional agricultural feedstock production. In the model, cropland allocation among three agriculture feedstock sectors, namely staple food, commodity export and biofuel is optimized through the use of the multiple objective technique referred to as compromise programming (CP). Our results indicate a projected microalgae total production cost of R$ 78,359 ha-1 (US$43,533), which has a breakdown as follows: R$ 34,133 ha-1 (US$18,963) for o... Mostrar Tudo |
|
Palavras-Chave: |
Biodiesel; Microalgoe. |
|
Categoria do assunto: |
-- |
|
|
|
|
Marc: |
LEADER 04450nam a2200157 a 4500
001 1118323
005 2011-11-18
008 2011 bl uuuu m 00u1 u #d
100 1 $aBOLL, M.G.
245 $aThe role of microalgae as biodiesel feedstock in a tropical setting economics, agro-energy competitiveness and potential impacts on regional agricultural feedstock production.
260 $a2011$c2011
300 $a246 f.
500 $aTese(Douctor of Philosophy of Hawaii, 2011
520 $aThe objective of this study is to obtain a realistic evaluation of the potential role of microalgae as a biodiesel feedstock in a tropical setting. First, microalgae economics are estimated, including the detailed design of a 400 ha microalgae open pond production farm together with the microalgae biomass and crude oil production costs calculations. Sensitivity analysis and a stochastic evaluation of the microalgae venture chances for profit are also included. Next, microalgae potential for biodiesel production is compared to traditional oil crops such as soybeans and African palm. This comparison is performed using the Northeast Region (NER) of Brazil as background. Six potential biodiesel feedstock sources produced in the NER and microalgae are compared considering selected environmental, economic and social sustainability indicators. Finally, in the third chapter, the study proposes a cropland allocation model for the NER. The model aims to offer insights to the decision maker concerning biofuel development strategies and their impact on regional agricultural feedstock production. In the model, cropland allocation among three agriculture feedstock sectors, namely staple food, commodity export and biofuel is optimized through the use of the multiple objective technique referred to as compromise programming (CP). Our results indicate a projected microalgae total production cost of R$ 78,359 ha-1 (US$43,533), which has a breakdown as follows: R$ 34,133 ha-1 (US$18,963) for operating costs and R$ 44,226 ha-1 (US$24,570) for overhead (ownership) costs. Our stochastic analysis indicates that microalgae production under the conditions assumed in the baseline scenario of this study has a 0% chance to present a positive NPV for a microalgae crude oil price of R$ 1.86. This price corresponds to an international oil price around US$ 77 bbl-1. To obtain a reasonable investment return (IRR = 12%) from the microalgae farm, an international oil price as high as US$ 461 bbl-1 is required. Despite the advantage of using about 14 times less cropland area (0.13 ha boe-1), microalgae presented significant disadvantages as compared to some of the traditional oil crops. Among these is the significant amount of N fertilizer and water demanded by microalgae production, namely 205 kg and 4,990 m3 boe-1, about 132% and 30% higher than the second highest value among the crops compared in this study, respectively. Optimized CP scenarios expanded annual cropland allocation to 14.58 million ha in the NER, year 2017, compared to 11.04 and 12.81 million ha in current (2007) and baseline (2017) scenarios, respectively. In comparison to the baseline scenario, cropland expansions allied to the shift of the commodities export dedicated cropland to the biofuel production sector in CP scenarios significantly increased the NER fuel autonomy (95%) and reduced its R$ 5,126 million reais deficit baseline comprehensive feedstock trade balance by 79%. Contrary to the concerns usually referred to biofuel development, our model indicates that in the NER case, it is the commodity export, rather than the staple food agriculture feedstock production sector, that is mostly affected by the biofuel cropland allocation demand. When compared to traditional oil crops, microalgae-based biodiesel scenarios could not significantly improve regional staple food autonomy, increasing this objective by 1% only. The NER fuel autonomy, in its turn, is positively impacted in the microalgae scenarios, but the increment as compared to the traditional oil crops is rather small, namely 2% and 7% in the B5 and B10 levels, respectively. These results indicate that the potential advantages expected for the microalgae-based biodiesel introduction did not materialize for the NER. It is concluded that the adoption of microalgae-based biodiesel is not an interesting biofuel alternative for the NER of Brazil for the next ten years.
653 $aBiodiesel
653 $aMicroalgoe
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Epagri-Chapecó (Epagri-Chapecó) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
|
Voltar
|
|
|
| Registros recuperados : 111 | |
| 7. |  | BOLL, M. G.; LEUNG, P. Economic feasibility of microalgae production for biodiesel development in NE Brazil. In: CTAHR STUDENT RESEARCH SYMPOSIUM, 21., 2009, Honolulu, Hawaii, US. [Proceedings...]. UH Manoa, Hawaii, US: College of Tropical Agriculture and Human Resources - CTAHR, University of Hawaii at Manoa, 2009.| Tipo: Resumo em Anais de Congresso | Circulação/Nível: -- - -- |
| Biblioteca(s): Epagri-Sede. |
|   |
| Registros recuperados : 111 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
