The Experts below are selected from a list of 84 Experts worldwide ranked by ideXlab platform
Antonio Bonomi - One of the best experts on this subject based on the ideXlab platform.
-
A vertical integration simplified model for straw recovery as feedstock in sugarcane biorefineries
Biomass and Bioenergy, 2015Co-Authors: Terezinha F. Cardoso, Otávio Cavalett, Mateus F. Chagas, Edvaldo Rodrigo De Morais, Oscar A. Braunbeck, Luis Augusto Barbosa Cortez, Elmer Ccopa Rivera, V.c. Geraldo, M.p. Da Cunha, Antonio BonomiAbstract:Abstract Mechanized sugarcane green harvesting has been increasingly adopted in Brazil, rising straw availability at the field. Computer-aided tools are used to predict the optimum conditions for straw recovery Systems. This study aims at developing a model-based method for optimization of sugarcane straw recovery costs and internal rate of return (IRR), as a function of sugarcane productivity, straw recovery fractions and transport distances considering two recovery Systems: integral harvesting (IS) and Baling System (BS). A simulation procedure using the Virtual Sugarcane Biorefinery (VSB), according to a Central Composite Design (CCD) is used in this study. The scenarios were based on an autonomous ethanol plant, with milling capacity of four million tons per year. The influence of these agricultural parameters on the sugarcane straw recovery costs and internal rate of return was evaluated through this approach, where the CCD was used for the development of an empirical model for optimization as well as a statistical evaluation of results. An optimized IRR (26.3%) was obtained for integral System, with low transport distance (20 km), maximum sugarcane stalk productivity (100 t ha−1) and maximum recovery fraction (70%). The same conditions lead to higher IRR (26.2%) for Baling System. Results showed that the IS promotes the highest reduction of the agricultural components of straw recovery cost and the optimum IRR considering the vertical integration of sugarcane biorefineries was observed by adopting this System.
Terezinha F. Cardoso - One of the best experts on this subject based on the ideXlab platform.
-
A vertical integration simplified model for straw recovery as feedstock in sugarcane biorefineries
Biomass and Bioenergy, 2015Co-Authors: Terezinha F. Cardoso, Otávio Cavalett, Mateus F. Chagas, Edvaldo Rodrigo De Morais, Oscar A. Braunbeck, Luis Augusto Barbosa Cortez, Elmer Ccopa Rivera, V.c. Geraldo, M.p. Da Cunha, Antonio BonomiAbstract:Abstract Mechanized sugarcane green harvesting has been increasingly adopted in Brazil, rising straw availability at the field. Computer-aided tools are used to predict the optimum conditions for straw recovery Systems. This study aims at developing a model-based method for optimization of sugarcane straw recovery costs and internal rate of return (IRR), as a function of sugarcane productivity, straw recovery fractions and transport distances considering two recovery Systems: integral harvesting (IS) and Baling System (BS). A simulation procedure using the Virtual Sugarcane Biorefinery (VSB), according to a Central Composite Design (CCD) is used in this study. The scenarios were based on an autonomous ethanol plant, with milling capacity of four million tons per year. The influence of these agricultural parameters on the sugarcane straw recovery costs and internal rate of return was evaluated through this approach, where the CCD was used for the development of an empirical model for optimization as well as a statistical evaluation of results. An optimized IRR (26.3%) was obtained for integral System, with low transport distance (20 km), maximum sugarcane stalk productivity (100 t ha−1) and maximum recovery fraction (70%). The same conditions lead to higher IRR (26.2%) for Baling System. Results showed that the IS promotes the highest reduction of the agricultural components of straw recovery cost and the optimum IRR considering the vertical integration of sugarcane biorefineries was observed by adopting this System.
-
Technical and economic assessment of trash recovery in the sugarcane bioenergy production System
Scientia Agricola, 2013Co-Authors: Terezinha F. Cardoso, Otávio Cavalett, Mateus F. Chagas, Edvaldo Rodrigo De Morais, João Luís Nunes Carvalho, Henrique Coutinho Junqueira Franco, Marcelo Valadares Galdos, Fábio Vale Scarpare, Oscar A. Braunbeck, Luis Augusto Barbosa CortezAbstract:Mechanized sugarcane (Saccharum spp.) harvest without burning has been increasingly adopted in Brazil, increasing trash availability on the field. This study aims at showing the importance of using an integrated framework tool to assess technical and economic impacts of integral harvesting and Baling trash recovery strategies and different recovery rates as well as its implications in the sugarcane production, transport and processing stages. Trash recovery using Baling System presents higher costs per unit of mass of recovered trash in comparison to System in which trash is harvested and transported with sugarcane stalks (integral harvesting System). However, the integrated agricultural and industrial assessment showed that recovering trash using Baling System presents better economic results (higher internal rate of return and lower ethanol production cost) than the integral harvesting System for trash recovery rates higher than 30 %. Varying trash recovery fraction, stalks productivity and mean transport distance for both integral harvesting and Baling Systems, sensitivity analyses showed that higher trash recovery fractions associated with higher stalks yields and long transport distances favors Baling System, mainly due to the reduction of bulk load density for integral harvesting System under those conditions.
Izabel Cristina Takitane - One of the best experts on this subject based on the ideXlab platform.
-
Economic efficiency of two Baling Systems for sugarcane straw
Industrial Crops and Products, 2014Co-Authors: Stella Vannucci Lemos, Marcelo Scantamburlo Denadai, Saulo Philipe Sebastião Guerra, Maura Seiko Tsutsui Esperancini, Osmar De Carvalho Bueno, Izabel Cristina TakitaneAbstract:In recent years, harvesting process of sugarcane is changing itself, passing through semi-mechanized for mechanized System, who, currently predominate in Sao Paulo state, Brazil. Mechanized harvesting consists in a sequence of operations which includes cutting the pointer and chopping the stalk. The straw is a harvesting residue, and it stays in the ground, piling up above soil, with a possible prejudice for crop yield. An economic way to retract this straw is using mechanized processing for bailing it, involving hay balers, which are imported to Brazil and their use require regularly field conditions of work. Those balers could produce square or round bales, which can be sold to energy generation. This study aims to estimate economic efficiency indicators of round and square Systems for sugarcane straw, establishing a relationship between Baling costs and the incoming generated from those bales. Based on data set, round Baling System was 26% more efficient than square Baling System, and that round baler has a lower purchase price and a higher compress ratio of biomass, allowing a greater potential for power generation, turning it a more advantageous in a possible marketing for bales produced.
Anthony F Turhollow - One of the best experts on this subject based on the ideXlab platform.
-
development and implementation of integrated biomass supply analysis and logistics model ibsal
Biomass & Bioenergy, 2006Co-Authors: Amit Kumar, Shahab Sokhansanj, Anthony F TurhollowAbstract:This paper describes the framework development of a dynamic integrated biomass supply analysis and logistics model (IBSAL) to simulate the collection, storage, and transport operations for supplying agricultural biomass to a biorefinery. The model consists of time dependent events representing the working rate of equipment and queues representing the capacity of storage structures. The discrete event and queues are inter-connected to represent the entire network of material flow from field to a biorefinery. Weather conditions including rain and snow influence the moisture content and the dry matter loss of biomass through the supply chain and are included in the model. The model is developed using an object oriented high level simulation language EXTEND™. A case of corn stover collection and transport scenario using Baling System is described.
-
feedstock cost analysis of corn stover residues for further processing
Energy, 2003Co-Authors: Robert D Perlack, Anthony F TurhollowAbstract:Abstract In this paper, we evaluate the costs for collecting, handling, and hauling corn stover to an ethanol conversion facility. We estimate costs for a conventional Baling System at varying levels of feedstock demand or conversion facility size. Our results generally indicate that stover can be collected, stored, and hauled for about $43.10–51.60/dry ton using conventional Baling equipment for conversion facilities ranging from 500 to 4000 dry tons/day. The cost difference between facility sizes is due to transportation. Transportation, collection and Baling, and farmer payments account for over 90% of total delivered costs. These estimates are based on average corn stover resource availability assumptions and are inclusive of all costs including farmer payments. Under conditions of high resource availability costs can be lowered by $6–10/dry ton. Delivered costs increase considerably under low resource availability conditions.
-
BASELINE COST FOR CORN STOVER COLLECTION
Applied Engineering in Agriculture, 2002Co-Authors: Shahabaddine Sokhansanj, Anthony F TurhollowAbstract:From consultations with three experienced farmer–custom operators, two Systems were selected for the development of baseline costs for collecting corn stover residue as bales. One System consisted of a combination of shredding–windrowing operations followed by round Baling. The other System consisted of separate shredding and windrowing (raking) operations followed by large rectangular Baling. Round bales were collected using a pull–type round bale transporter equipped with a loading arm and stacked in storage using a telescopic loader. Rectangular bales were collected using a self–propelled stacker wagon that stacked the bales automatically. An average distance between the farm and storage of 8 km (5 miles) was assumed. The calculated cost for all operations up to and including stacking in a covered storage was $21.60/dry Mg ($19.70/ dry ton) and $23.60/dry Mg ($21.40/dry ton) for the round Baling System and for the rectangular Baling System, respectively. The cost included wages but did not include any additional payment to the farmer. The cost difference between the two Systems was due to the additional raking operation and higher capital cost of equipment for rectangular Baling and transport and smaller load for the rectangular bale transport.
Luis Augusto Barbosa Cortez - One of the best experts on this subject based on the ideXlab platform.
-
A vertical integration simplified model for straw recovery as feedstock in sugarcane biorefineries
Biomass and Bioenergy, 2015Co-Authors: Terezinha F. Cardoso, Otávio Cavalett, Mateus F. Chagas, Edvaldo Rodrigo De Morais, Oscar A. Braunbeck, Luis Augusto Barbosa Cortez, Elmer Ccopa Rivera, V.c. Geraldo, M.p. Da Cunha, Antonio BonomiAbstract:Abstract Mechanized sugarcane green harvesting has been increasingly adopted in Brazil, rising straw availability at the field. Computer-aided tools are used to predict the optimum conditions for straw recovery Systems. This study aims at developing a model-based method for optimization of sugarcane straw recovery costs and internal rate of return (IRR), as a function of sugarcane productivity, straw recovery fractions and transport distances considering two recovery Systems: integral harvesting (IS) and Baling System (BS). A simulation procedure using the Virtual Sugarcane Biorefinery (VSB), according to a Central Composite Design (CCD) is used in this study. The scenarios were based on an autonomous ethanol plant, with milling capacity of four million tons per year. The influence of these agricultural parameters on the sugarcane straw recovery costs and internal rate of return was evaluated through this approach, where the CCD was used for the development of an empirical model for optimization as well as a statistical evaluation of results. An optimized IRR (26.3%) was obtained for integral System, with low transport distance (20 km), maximum sugarcane stalk productivity (100 t ha−1) and maximum recovery fraction (70%). The same conditions lead to higher IRR (26.2%) for Baling System. Results showed that the IS promotes the highest reduction of the agricultural components of straw recovery cost and the optimum IRR considering the vertical integration of sugarcane biorefineries was observed by adopting this System.
-
Technical and economic assessment of trash recovery in the sugarcane bioenergy production System
Scientia Agricola, 2013Co-Authors: Terezinha F. Cardoso, Otávio Cavalett, Mateus F. Chagas, Edvaldo Rodrigo De Morais, João Luís Nunes Carvalho, Henrique Coutinho Junqueira Franco, Marcelo Valadares Galdos, Fábio Vale Scarpare, Oscar A. Braunbeck, Luis Augusto Barbosa CortezAbstract:Mechanized sugarcane (Saccharum spp.) harvest without burning has been increasingly adopted in Brazil, increasing trash availability on the field. This study aims at showing the importance of using an integrated framework tool to assess technical and economic impacts of integral harvesting and Baling trash recovery strategies and different recovery rates as well as its implications in the sugarcane production, transport and processing stages. Trash recovery using Baling System presents higher costs per unit of mass of recovered trash in comparison to System in which trash is harvested and transported with sugarcane stalks (integral harvesting System). However, the integrated agricultural and industrial assessment showed that recovering trash using Baling System presents better economic results (higher internal rate of return and lower ethanol production cost) than the integral harvesting System for trash recovery rates higher than 30 %. Varying trash recovery fraction, stalks productivity and mean transport distance for both integral harvesting and Baling Systems, sensitivity analyses showed that higher trash recovery fractions associated with higher stalks yields and long transport distances favors Baling System, mainly due to the reduction of bulk load density for integral harvesting System under those conditions.
