Download or read book Development of an Optimization Model for Biofuel Facility Size and Location and a Simulation Model for Design of a Biofuel Supply Chain written by Fengli Zhang and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimization and Simulation for Designing the Supply Chain of the Cellulosic Biofuel Industry written by Heungjo An and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this dissertation is to provide an effective approach to design the supply chain (SC) of the cellulosic biofuel industry in order that it will support and accelerate the successful commercialization of the cellulosic biofuel industry. The methods of approach to this problem are (1) to assess the state-of-the-art biofuel SC studies, (2) to provide a decision support tool based on a mixed integer programming (MIP) model for the cellulosic biofuel supply chain design problem (BSCP), (3) to devise an exact solution method to solve large-scale instances of BSCP, (4) to evaluate a biomass logistics system based on biomass modules, by using new simulation elements for new machines, and (5) to compare several biomass logistics systems based on biomass module, bale, and silage, using simulation models. The first part of this dissertation broadly reviews the literature on biofuel SCs, analyzing the state-of-the-art biofuel and petroleum-based fuel SC studies as well as relating generic SC models that have been published over the last decade to the biofuel SC (An et al., 2010a). The resulting analysis proposes fertile opportunity for future research to contribute to improving biofuel SC. The second part of this dissertation formulates BSCP as a MIP model, which is a time-staged, multi-commodity flow, network design problem with an objective of maximizing profit (An et al., 2010b). The model prescribes strategic level decisions (i.e., facility locations, capacities, and technology types) as well as plans for transportation routes and material flows (i.e., quantities produced, stored, and transported) in each time period. A case study demonstrates managerial use in application to a region in Central Texas. The third part of this dissertation provides an exact solution method to solve BSCP. An embedded structure can be transformed to a generalized minimum cost flow problem, which is used as a sub-problem in a CG approach. This study proposes a dynamic programming algorithm to solve the sub-problem in O(m), generating improving path-flows. To accelerate branch-and-bound (B & B) search, it develops an inequality, called the partial objective constraint (POC), which is based on the portion of the objective function associated with binary variables. The fourth part of this dissertation evaluates a biomass module system, which is a conceptual logistics system based on large packages of chopped biomass with sufficient size and density to provide maximized legal highway loads and quick load/unload times. The last part of this dissertation evaluates economic benefits of the biomass module system, comparing it to bale and silage systems.
Download or read book Handbook of Bioenergy written by Sandra D. Eksioglu and published by Springer. This book was released on 2015-08-11 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook brings together recent advances in the areas of supply chain optimization, supply chain management, and life-cycle cost analysis of bioenergy. These topics are important for the development and long-term sustainability of the bioenergy industry. The increasing interest in bioenergy has been motivated by its potential to become a key future energy source. The opportunities and challenges that this industry has been facing have been the motivation for a number of optimization-related works on bioenergy. Practitioners and academicians agree that the two major barriers of further investments in this industry are biomass supply uncertainty and costs. The goal of this handbook is to present several cutting-edge developments and tools to help the industry overcome these supply chain and economic challenges. Case studies highlighting the problems faced by investors in the US and Europe illustrate the impact of certain tools in making bioenergy an economically viable energy option.
Download or read book Biomass to Biofuel Supply Chain Design and Planning under Uncertainty written by Mir Saman Pishvaee and published by Academic Press. This book was released on 2020-11-25 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biomass to Biofuel Supply Chain Design and Planning under Uncertainty: Concepts and Quantitative Methods explores the design and optimization of biomass-to-biofuel supply chains for commercial-scale implementation of biofuel projects by considering the problems and challenges encountered in real supply chains. By offering a fresh approach and discussing a wide range of quantitative methods, the book enables researchers and practitioners to develop hybrid methods that integrate the advantages and features of two or more methods in one decision-making framework for the efficient optimization of biofuel supply chains, especially for complex supply chain models. Combining supply chain management and modeling techniques in a single volume, the book is beneficial for graduate students who no longer need to consult subject-specific books alongside mathematical modeling textbooks. The book consists of two main parts. The first part describes the key components of biofuel supply chains, including biomass production, harvesting, collection, storage, preprocessing, conversion, transportation, and distribution. It also provides a comprehensive review of the concepts, problems, and opportunities associated with biofuel supply chains, such as types and properties of the feedstocks and fuel products, decision-making levels, sustainability concepts, uncertainty analysis and risk management, as well as integration of biomass supply chain with other supply chains. The second part focuses on modeling and optimization of biomass-to-biofuel supply chains under uncertainty, using different quantitative methods to determine optimal design. Proposes a general multi-level framework for the optimal design and operation of biomass-to-biofuel supply chains through quantitative analysis and modeling, including different biomass and waste biomass feedstock, production pathways, technology options, transportation modes, and final products Explores how modeling and optimization tools can be utilized to address sustainability issues in biofuel supply chains by simultaneously assessing and identifying sustainable solutions Presents several case studies with different regional constraints to evaluate the practical applicability of different optimization methods and compares their performance in real-world situations Includes General Algebraic Modeling System (GAMS) codes for solving biomass supply chain optimization problems discussed in different chapters
Download or read book Spatial and Temporal Optimization of Advanced Biofuel Supply Chains in the United States written by Mohamed Laila and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Biofuels are one of the promising energy alternatives to reduce fossil fuel consumption and combat climate change. Growing civilian and military interest in acquiring cost competitive biofuels have inspired research to develop models that optimize their supply chains. Such models are constrained by several factors, namely the time-consuming data collection and processing, the complexity of formulating a mathematical optimization model, the need to use proprietary solvers, and the requirement for computational resources. To overcome these hurdles, researchers proposed the development of integrated platforms that streamline these activities and increase accessibility to the required algorithms and hardware. Hence, the objectives of this thesis were to 1) formulate deterministic and stochastic mathematical optimization models to optimize biofuel supply chains in a spatially and temporally explicit manner, and test their resilience under uncertainty, 2) design a web-based platform that integrates the proposed model with Application Program Interfaces and publicly available databases to construct user-defined case studies and solve optimization problems on third-party cloud servers, and 3) demonstrate the suitability of the integrated platform to generate military biofuel supply chains in several case studies from the Pacific region of the United States. The integrated platform is called the Biofuel supply chain Geospatial and Temporal Optimizer (BioGeSTO). The first version of BioGeSTO included a deterministic, spatial and temporal explicit, Mixed-Integer Linear Programming (MILP) model that accounts for improvements in conversion yields due to technology learning and account for future oil prices. The model was applied to a case study in California between 2020 and 2040 to determine whether direct financial incentives, provided to conversion facilities, expedited the development of the military biofuel supply chain for three oil price scenarios. It was concluded that direct financial incentives will have little or no effect on the development of the supply chain. The second version of BioGeSTO expanded the platform to include a stochastic MILP that was used to evaluate the impact of uncertainty pertaining to the availability and cost of biomass, and oil prices on the same supply chain. The supply chain had approximately 65% chance of emerging under these scenarios. I found that a Hydrotreatment of Esters and Fatty Acids (HEFA) facility dedicated to processing camelina oil (obtained from agricultural land in central California, where it is grown in rotation with wheat) could be introduced between 2020 and 2027 as a reliable and financially feasible option for military biofuels supply in the state. The final version of BioGeSTO, which included an interactive web interface, was used to determine how carbon pricing affected the military biofuel supply chain in the Pacific states of California, Oregon, and Washington. Introducing a carbon price improved the net present value and total cumulative production of the military biofuel supply chain under several oil price scenarios. Overall, BioGeSTO, an integrated platform for modelling and optimizing biofuel supply chain, is a suitable tool for researchers and decision makers to evaluate their case studies. It can be used to test the impact of introducing new policy schemes, technologies, or uncertainties on the design and performance of civilian and military biofuel supply chains. In future research projects, BioGeSTO can be expanded to include tactical and operational decisions (shorter time scales), while user defined heuristics may be added to accelerate the solution times of optimization problems." --
Download or read book Biomass and Biofuels written by Shibu Jose and published by CRC Press. This book was released on 2015-04-22 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: The long-held tenets of the energy sector are being rewritten in the twenty-first century. The rise of unconventional oil and gas and of renewables is transforming our economies and improving our understanding of the distribution of the world's energy resources and their impacts. A complete knowledge of the dynamics underpinning energy markets is n
Download or read book 23 European Symposium on Computer Aided Process Engineering written by Mingyen Yu and published by Elsevier Inc. Chapters. This book was released on 2013-06-10 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Renewable energy, especially biofuels, is seen as a viable solution to replace fossil fuels. Tighter environmental regulations have encouraged countries to develop strategic approaches to utilize alternative resources and new technologies. In retrospect, the performances of supply chains (SCs) are important from economic and environmental perspectives. Current research mainly focuses on the optimization of biofuel SCs in terms of economics, and distribution networks for other products and markets. There has been less work addressing the design of the distribution network for biofuel SC, in centralised/decentralised distribution, covering financial and environmental aspects. In this paper, we propose the optimization framework for biofuel SC with respect to the type of distribution network, and geographical locations of the facilities. Our research focuses on finding the optimal locations of the biofuel plant, considering biomass dispersions and customer locations based on candidate points. We also investigate the effects of using different transportation modes and the environmental effects on the type of distribution network used. A case study of a lignocellulosic plant distributing ethanol to its customers in various cities within UK has been used to validate the above framework. The result shows that the total distances of travel, as well as the unit transportation cost dominate the strategic application of either a centralised or decentralised distribution network. The concept presented in this research can be applied to other distribution design cases in various geographical locations and countries.
Download or read book Forest Value Chain Optimization and Sustainability written by Sophie D'Amours and published by CRC Press. This book was released on 2016-12-01 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a global perspective on the various issues that the industry has to face as well as to provide some key global strategies that can help coping with those global challenges, such as collaboration, strategic value chain planning, and interdependency analyses. It presents literature reviews, strategic research orientations, assessment of some current key issues, and state-of-the-art methodologies.
Download or read book Modeling Bioenergy Supply Chains written by Yuanzhe Li and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Biofuels have been promoted by governmental policies for reducing fossil fuel dependency and greenhouse gas emissions, as well as facilitating regional economic growth. Comprehensive model analysis is needed to assess the economic and environmental impacts of developing bioenergy production systems. For cellulosic biofuel production and supply in particular, existing studies have not accounted for the inter-dependencies between multiple participating decision makers and simultaneously incorporated uncertainties and risks associated with the linked production systems. This dissertation presents a methodology that incorporates uncertainty element to the existing integrated modeling framework specifically designed for advanced biofuel production systems using dedicated energy crops as feedstock resources. The goal of the framework is to support the bioenergy industry for infrastructure and supply chain development. The framework is flexible to adapt to different topological network structures and decision scopes based on the modeling requirements, such as on capturing the interactions between the agricultural production system and the multi-refinery bioenergy supply chain system with regards to land allocation and crop adoption patterns, which is critical for estimating feedstock supply potentials for the bioenergy industry. The methodology is also particularly designed to incorporate system uncertainties by using stochastic programming models to improve the resilience of the optimized system design. The framework is used to construct model analyses in two case studies. The results of the California biomass supply model estimate that feedstock pretreatment via combined torrefaction and pelletization reduces delivered and transportation cost for long-distance biomass shipment by 5% and 15% respectively. The Pacific Northwest hardwood biofuels application integrates full-scaled supply chain infrastructure optimization with agricultural economic modeling and estimates that bio-jet fuels can be produced at costs between 4 to 5 dollars per gallon, and identifies areas suitable for simultaneously deploying a set of biorefineries using adopted poplar as the dedicated energy crop to produce biomass feedstocks. This application specifically incorporates system uncertainties in the crop market and provides an optimal system design solution with over 17% improvement in expected total profit compared to its corresponding deterministic model.
Download or read book Development of an Optimization Model for the Location of Biofuel Production Plants written by Sylvain Leduc and published by . This book was released on 2009 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biomass to biofuels Supply Chain Design and Management written by Ambarish Madhukar Acharya and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this dissertation is to study optimization models that integrate location, production, inventory and transportation decisions for industrial products and apply the knowledge gained to develop supply chains for agricultural products (biomass). We estimate unit cost for the whole biomass-to-biofuels' supply chain which is the per gallon cost for biofuels up till it reaches the markets. The unit cost estimated is the summation of location, production, inventory holding, and transportation costs. In this dissertation, we focus on building mathematical models for designing and managing the biomass-to-biofuels' supply chains. The computational complexity of the developed models makes it advisable to use heuristic solution procedures. We develop a Lagrangean decomposition heuristic. In our heuristic, we divide the problem into two sub-problems, sub-problem 1 is a transportation problem and sub-problem 2 is a combination of a capacitated facility location and production planning problem. Subproblem 2 is further divided by commodities. The algorithm is tested for a number of different scenarios. We also develop a decision support system (DSS) for the biomass-to-biofuels' supply chain. In our DSS, the main problem is divided into four easy-to-solve supply chain problems. These problems were determined based on our knowledge of supply chain and discussions with the experts from the biomass and biofuels' sector. The DSS is coded using visual basic applications (VBA) for Excel and has a simple user interface which assists the user in running different types of supply chain problems and provides results in form of reports which are easy to understand.
Download or read book Biomass Supply Chains for Bioenergy and Biorefining written by Jens Bo Holm-Nielsen and published by Woodhead Publishing. This book was released on 2016-02-23 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biomass Supply Chains for Bioenergy and Biorefining highlights the emergence of energy generation through the use of biomass and the ways it is becoming more widely used. The supply chains that produce the feedstocks, harvest, transport, store, and prepare them for combustion or refinement into other forms of fuel are long and complex, often differing from feedstock to feedstock. Biomass Supply Chains for Bioenergy and Biorefining considers every aspect of these supply chains, including their design, management, socioeconomic, and environmental impacts. The first part of the book introduces supply chains, biomass feedstocks, and their analysis, while the second part looks at the harvesting, handling, storage, and transportation of biomass. The third part studies the modeling of supply chains and their management, with the final section discussing, in minute detail, the supply chains involved in the production and usage of individual feedstocks, such as wood and sugar starches, oil crops, industrial biomass wastes, and municipal sewage stocks. Focuses on the complex supply chains of the various potential feedstocks for biomass energy generation Studies a wide range of biomass feedstocks, including woody energy crops, sugar and starch crops, lignocellulosic crops, oil crops, grass crops, algae, and biomass waste Reviews the modeling and optimization, standards, quality control and traceability, socioeconomic, and environmental impacts of supply chains
Download or read book Biomass for Energy Country Specific Show Case Studies written by Tariq Al-Shemmeri and published by MDPI. This book was released on 2018-04-27 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Biomass for Energy Country Specific Show Case Studies" that was published in Energies
Download or read book A Simulation Model for Optimizing Biofuel Distribution Network written by Spyridon Angelis and published by . This book was released on 2016 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research presents a discrete even simulation model to analyze biofuel supply chain and determine the best distribution practices. The increased demand for reducing the amounts of greenhouse gases being expelled into the environment, and the increased demand for reducing the dependency on foreign oil has augmented the US interest in alternative forms of fuels such as biofuels. As our demand for energy continues to increase and the government continues to implement policies to decrease fossil fuel burning, it is foreseeable that the biofuel industry will continue to expand. This will mainly be because biofuel is one of renewable energies that has promising potential to reduce dependency on foreign oil, especially in transportation sector, without replacing the current vehicle fleet. A literature review suggests that the economic viability of biofuels is heavily affected by its logistics. There have been, however minimal attempts to determine the best distribution practices of the biofuel supply chain. In this research, therefore, we present a simple yet practical approach that employs a valid and credible simulation modeling to handle this issue. We considered a finite number of possible future scenarios, which can deal with disruptions caused by unexpected and rare events. The applicability of the proposed model was demonstrated in the case study of the state of Nevada in the United States. The results demonstrate that the proposed model is a practical and flexible tool in analyzing realistic biofuel distribution. We believe that the proposed simulation model will serve as an effective decision support tool in the logistics operations of the biofuel industry.
Download or read book 23 European Symposium on Computer Aided Process Engineering written by Fengqi You and published by Elsevier Inc. Chapters. This book was released on 2013-06-10 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper, a bi-criterion, multi-period, stochastic mixed-integer linear programming model is proposed to address the optimal design and planning of hydrocarbon biorefinery supply chains under supply and demand uncertainties. The model accounts for diverse conversion technologies, feedstock seasonality and fluctuation, geographical diversity, biomass degradation, demand variation, government incentives and risk management. The objective is simultaneous minimization of the expected annualized cost and the financial risk which is measured by conditional value-at-risk and downside risk. The model determines the optimal network design, technology selection, capital investment, production planning, and logistics management decisions. Multi-cut L-shaped decomposition approach is implemented to circumvent the computational burden of solving large scale problems. The proposed modeling framework and algorithm are illustrated through two case studies of hydrocarbon biorefinery supply chain for the State of Illinois.
Download or read book Strategic Planning for the Sustainable Production of Biofuels written by José Maria Ponce-Ortega and published by Elsevier. This book was released on 2019-03-05 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Strategic Planning for the Sustainable Production of Biofuels presents several optimization models for the design and planning of sustainable biorefinery supply chains, including issues surrounding the potential of biomass feedstocks in multiple harvesting sites, availability and seasonality of biomass resources, different potential geographical locations for processing plants that produce multiple products using diverse production technologies, economies of scale for production technologies, demands and prices of multiple products, locations of storage facilities, and a number of transportation modes. Sustainability considerations are incorporated into the proposed models by including simultaneous economic, environmental and social performance in the evaluation of the supply chain designs. Covers different optimization models for the strategic planning of biorefining systems Includes the GAMS and MATLAB codes for solving various problems Considers sustainability criteria in the presented models Presents different approaches for obtained trade-off solutions Provides general software that can be used for solving different problems
Download or read book Modeling Future Biofuel Supply Chains Using Spatially Explicit Infrastructure Optimization written by Nathan Chandler Parker and published by . This book was released on 2011 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Policies have been enacted that promote biofuels with the goal of reducing greenhouse gas emissions, reduce dependence on petroleum and to spur rural economic growth. The supply of biofuels that can meet these three goals is limited. The cost of this supply is influenced by the geography of the biomass resource and demand for fuels. Existing studies projecting the future supply have not accounted for the spatial aspects of the biofuel supply in detail. This dissertation presents a spatially-explicit model of future biofuel supply chains in the United States, with the goal of providing supply curves of biofuels by resource-technology pathway with detailed accounting of the required infrastructure. The model is used to analyze the potential supply of biofuels for meeting the federal Renewable Fuel Standard (RFS2) and analyze biofuels from waste and residue resources in California at high resolution with accounting for air pollutant emissions. The results of the national case study project that domestic biofuels can achieve the RFS2 mandates for 2022 at fuel prices of between $3.4 and $5 per gasoline gallon equivalent. The largest sources of variation are the cost of cellulosic biofuel technologies and the availability of low cost waste resources. Building the 200-250 cellulosic biorefineries needed to achieve the target requires a capital investment greater than $100 billion but less than $360 billion depending on technology development and choice of cellulosic technology. Waste and residue biomass can provide quantities of biofuels that assist with policy goals. Nationally, waste and residue resources are projected to provide between 35 and 64 percent of the RFS2 mandate in both 2018 and 2022. In California, biofuels from waste and residue resources have limited potential for petroleum displacement, but could contribute 40-70% of the LCFS emissions reductions with mixed and uncertain results on air quality.
