Algal Biomass Production via Open Pond Algae Farm Cultivation: 2021 State of Technology and Future Research PDF Download
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Languages : en
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The annual State of Technology (SOT) assessment is an essential activity for platform research conducted under the Bioenergy Technologies Office. It allows for the impact of research progress to be quantified in terms of economic improvements in the overall biofuel production process for a particular biomass processing pathway, whether based on terrestrial or algal biomass feedstocks. As such, initial benchmarks can be established for currently demonstrated performance, and progress can be tracked towards out-year goals to ultimately demonstrate economically viable biofuel technologies. NREL's algae state of technology benchmarking efforts focus both on front-end algal biomass production and separately on back-end conversion to fuels through NREL's "combined algae processing" (CAP) pathway. The production model is based on outdoor long-term cultivation data, enabled by comprehensive algal biomass production trials conducted under Development of Integrated Screening, Cultivar Optimization, and Verification Research (DISCOVR) consortium efforts, driven by data furnished by Arizona State University (ASU) at the Arizona Center for Algae Technology and Innovation (AzCATI) testbed site. The CAP model is based on experimental efforts conducted under NREL research and development projects. This report focuses on front-end algal biomass production, documenting the pertinent algal biomass cultivation parameters that were input to the NREL open pond algae farm model based on the latest DISCOVR cultivation performance data. Relative to the fiscal year (FY) 2020 SOT at $683/ton or $603/ton for ASU and FA evaporation scenarios, respectively (unlined pond basis), the FY 2021 SOT represents a slight increase in MBSP of 1%-2%. This is primarily attributed to a slight 4% reduction in annual cultivation productivity achieved at the AzCATI site (supported by the efforts under the DISCOVR consortium noted above) observed during FY 2021 cultivation campaigns.
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Languages : en
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The annual State of Technology (SOT) assessment is an essential activity for platform research conducted under the Bioenergy Technologies Office. It allows for the impact of research progress to be quantified in terms of economic improvements in the overall biofuel production process for a particular biomass processing pathway, whether based on terrestrial or algal biomass feedstocks. As such, initial benchmarks can be established for currently demonstrated performance, and progress can be tracked towards out-year goals to ultimately demonstrate economically viable biofuel technologies. NREL's algae state of technology benchmarking efforts focus both on front-end algal biomass production and separately on back-end conversion to fuels through NREL's "combined algae processing" (CAP) pathway. The production model is based on outdoor long-term cultivation data, enabled by comprehensive algal biomass production trials conducted under Development of Integrated Screening, Cultivar Optimization, and Verification Research (DISCOVR) consortium efforts, driven by data furnished by Arizona State University (ASU) at the Arizona Center for Algae Technology and Innovation (AzCATI) testbed site. The CAP model is based on experimental efforts conducted under NREL research and development projects. This report focuses on front-end algal biomass production, documenting the pertinent algal biomass cultivation parameters that were input to the NREL open pond algae farm model based on the latest DISCOVR cultivation performance data. Relative to the fiscal year (FY) 2020 SOT at $683/ton or $603/ton for ASU and FA evaporation scenarios, respectively (unlined pond basis), the FY 2021 SOT represents a slight increase in MBSP of 1%-2%. This is primarily attributed to a slight 4% reduction in annual cultivation productivity achieved at the AzCATI site (supported by the efforts under the DISCOVR consortium noted above) observed during FY 2021 cultivation campaigns.
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The annual State of Technology (SOT) assessment is an essential activity for platform research conducted under the Bioenergy Technologies Office (BETO). It allows for the impact of research progress (both directly achieved in-house at the National Renewable Energy Laboratory [NREL] and furnished by partner organizations) to be quantified in terms of economic improvements in the overall biofuel production process for a particular biomass processing pathway, whether based on terrestrial or algal biomass feedstocks. As such, initial benchmarks can be established for currently demonstrated performance, and progress can be tracked toward out-year goals to ultimately demonstrate economically viable biofuel technologies. NREL's algae SOT benchmarking efforts focus both on front-end algal biomass production and separately on back-end conversion to fuels through NREL's "combined algae processing" (CAP) pathway. The production model is based on outdoor long-term cultivation data, enabled by comprehensive algal biomass production trials conducted under the Development of Integrated Screening, Cultivar Optimization, and Verification Research (DISCOVR) consortium efforts, driven by data furnished by Arizona State University (ASU) at the Arizona Center for Algae Technology and Innovation (AzCATI) testbed site. The CAP model is based on experimental efforts conducted primarily under NREL research and development projects. This report focuses on front-end algal biomass production, documenting the pertinent algal biomass cultivation parameters that were input to the NREL open pond algae farm model. Through partnerships under DISCOVR, collaborators at ASU furnished details on cultivation performance metrics including biomass productivity and harvest densities for recent growth trials done at the AzCATI site. The resulting biomass productivity was calculated at 18.5 g/m2/day (ash-free dry weight [AFDW], annual average) for seasonal cultivation of Picochlorum celeri, Tetraselmis striata LANL1001, and Monoraphidium minutum 26B-AM biomass strains at the ASU site. Picochlorum celeri achieved the best productivity from May to September, with Monoraphidium minutum 26B-AM being used in October, November, March, and April, and Tetraselmis striata employed during winter months (December through February). Beyond the standard SOT models, in Appendix C of this report we also present an industry case study evaluating several scenarios reflective of outdoor cultivation data furnished by an industry collaborator. This case study provides a supplementary datapoint on work being performed elsewhere achieving comparable cultivation productivity with more favorable compositional quality, producing biomass enriched in lipids as may be more optimal for conversion upgrading to fuels and products.
Author: Ryan Davis
Publisher:
ISBN:
Category : Algae products
Languages : en
Pages : 24
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Languages : en
Pages : 0
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NREL's algae state of technology benchmarking efforts focus both on front-end algal biomass production and separately on back-end conversion to fuels through NREL's "combined algae processing" (CAP) pathway. The production model is based on outdoor long-term cultivation data, enabled by comprehensive algal biomass production trials conducted under Development of Integrated Screening, Cultivar Optimization, and Verification Research (DISCOVR) consortium efforts, driven by data furnished by Arizona State University (ASU) at the Arizona Center for Algae Technology and Innovation (AzCATI) testbed site. The CAP model is based on experimental efforts conducted under NREL R&D projects. This report focuses on front-end algal biomass production, documenting the pertinent algal biomass cultivation parameters that were input to the NREL open pond algae farm model and reports on key process sustainability indicators for the biomass production stage including annual biomass yields, facility power demand, and water consumption.
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Languages : en
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In this assessment, we have evaluated target minimum biomass selling prices (MBSPs) of algae biomass production for four photobioreactor (PBR) designs compared to a previous open pond target case. We utilized techno-economic assessment modeling to determine if the target PBR cases can compete with open ponds for low-cost commodity fuels in an 'nth-plant' scenario. In the process, algal biomass is produced in one of the five cultivation options, including: open ponds, horizontal tubes, helical tubes, and two vertical bag/panel designs termed 'GWP-II flat panels' and 'Leidos hanging bags.' The projected target cultivation productivity for each PBR design was estimated based on the most credible literature data presenting PBR and pond cultivation on a directly comparable basis, and then extrapolating out to the future. Resulting productivities on an aerial basis were estimated to range from 25 g/m2/day to 52.5 g/m2/day (cultivation area). CO2, nutrients, and algae inoculum are supplied to the production area. After cultivation, the biomass is dewatered to 20 wt% solids in three stages including in-ground gravity settling, membrane filtration, and centrifugation. CO2 piping, water piping, and storage are also included in the analysis. Based on our recently published 'algae farm' design report, the open pond cultivation benchmark was set at an MBSP of $494/ton ash-free dry weight (AFDW). The horizontal tubes are large volume reactors with productivity similar to that of open ponds, but result in an MBSP of $708/ton AFDW. The helical tubes are made from glass and have a high capital investment resulting in a MBSP of $1,737/ton AFDW. The GWP-II PBR is a vertical flexible plastic flat-panel system with an estimated MBSP of $1,793/ton AFDW. Finally, the Leidos hanging bag system, which derives cultivation cost values based on inputs furnished by Algenol, results in an estimated MBSP of $639/ton AFDW.
Author: Amos Richmond
Publisher: John Wiley & Sons
ISBN: 1405172495
Category : Technology & Engineering
Languages : en
Pages : 587
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Book Description
Handbook of Microalgal Culture is truly a landmarkpublication, drawing on some 50 years of worldwide experience inmicroalgal mass culture. This important book comprisescomprehensive reviews of the current available information onmicroalgal culture, written by 40 contributing authors from aroundthe globe. The book is divided into four parts, with Part I detailingbiological and environmental aspects of microalgae with referenceto microalgal biotechnology and Part II looking in depth at majortheories and techniques of mass cultivation. Part III compriseschapters on the economic applications of microalgae, includingcoverage of industrial production, the use of microalgae in humanand animal nutrition and in aquaculture, in nitrogen fixation,hydrogen and methane production, and in bioremediation of pollutedwater. Finally, Part IV looks at new frontiers and includeschapters on genetic engineering, microalgae as platforms forrecombinant proteins, bioactive chemicals, heterotrophicproduction, microalgae as gene-delivery systems for expressingmosquitocidal toxins and the enhancement of marine productivity forclimate stabilization and food security. Handbook of Microalgal Culture is an essential purchasefor all phycologists and also those researching aquatic systems,aquaculture and plant sciences. There is also much of great use toresearchers and those involved in product formulation withinpharmaceutical, nutrition and food companies. Libraries in alluniversities and research establishments teaching and researchingin chemistry, biological and pharmaceutical sciences, food sciencesand nutrition, and aquaculture will need copies of this book ontheir shelves. Amos Richmond is at the Blaustein Institute for DesertResearch, Ben-Gurion University of the Negev, Israel.
Author: Bhaskar Singh
Publisher: Springer
ISBN: 8132226410
Category : Science
Languages : en
Pages : 194
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Book Description
This book presents the dynamic role of algae in a sustainable environment. Two major aspects, namely bioenergy and bioremediation, have been elaborated in various chapter contributed by scientists and teachers from different geographical areas throughout the world. Algal biofuels is an emerging area of equal interest to researchers, industries, and policy makers working or focusing on alternative (i.e. renewable) fuels. Algae have been an area of interest due to their wide range of applications. Over the last 5 decades, eukaryotic algae have been used in the aquaculture industry as feed for invertebrates, providing a rich source of antioxidants, dietary fiber, minerals and protein. More recently, there has been a focus on the use of algal biomass in the development of alternative fuels. The extraction of oil from algae has been widely explored as a much more viable feedstock than plant-based oils in large-scale fuel production. using algae as feedstock has the advantages that it doesn’t require arable land and that wastewater can be used as a source of nutrients in their culture. The multifunctional approach of algae includes pollution remediation, carbon sequestration, biofuels production, and delivery of value-added products. However, there are still some obstacles that need to be overcome to make their use as potential feedstock for biofuels techno-economically feasible. In order to maintain the sustainability aspect of algal biofuels, various aspects have to be studied and critically analyzed to assess the long-term sustainability of algal derived biofuels. This book discusses the role of algae as a promising future feedstock for biofuels. They are known to sequester carbon in much larger amounts than plants and as such the book also describes their phycoremediation potential for conventional as well as emerging contaminants. It describes the role of anaerobic digestion in algal biorefineries; bioreactions and process parameters; biogas recovery and reuse. The role of algal biofilm based technology in wastewater treatment and transforming waste into bio-products is discussed, and remediation of sewage water through algae is assessed. The book also describes the production of biohydrogen, bio-oil, biodiesel; and the major bottlenecks in their usage. The emerging characterization techniques of these biofuels (bio-oil and biodiesel) are described, as are the decolorizing potential of algae and the genetic engineering techniques that could enhance the production of lipids in algae. Other aspects of the book include the role of remote sensing technology in the monitoring of algae and a life cycle assessment of algal biofuels.
Author: Rakesh Bajpai
Publisher: Springer Science & Business Media
ISBN: 940077494X
Category : Medical
Languages : en
Pages : 331
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Book Description
This book reviews efforts to produce chemicals and fuels from forest and plant products, agricultural residues and more. Algae can potentially capture solar energy and atmospheric CO2; the book details needed research and legislative initiatives.
Author: Jorge Alberto Vieira Costa
Publisher: Elsevier Inc. Chapters
ISBN: 0128083654
Category : Science
Languages : en
Pages : 39
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Book Description
Microalgal biomasses have a long history of industrial production for application in a variety of fields. The success of commercial large-scale production of microalgae depends on many factors, one which is the development of cost-effective systems. Open pond reactors are the most widely used system in large-scale microalgal cultivation due to their low cost of construction, maintenance, and operation. However, closed photobioreactors have a high photosynthetic efficiency and biomass productivity. This study presents the advantages and disadvantages of open ponds compared with other photobioreactors and examines the factors that affect the cultures and their bioproducts.
Author: Ajay K. Dalai
Publisher: Routledge
ISBN: 1000410781
Category : Business & Economics
Languages : en
Pages : 347
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Book Description
This book enables readers to understand the theoretical aspects, key steps and scientific techniques with a detailed mechanism to produce biofuels from algae. Each chapter provides the latest developments and recent advancements starting from algal cultivation techniques to the production of value-added green fuels, chemicals and products with wide applications. The volume brings together a broad range of international and interdisciplinary experts, including chemical and biological engineers, biotechnologists, process engineers, environmentalists, pharmacists and nutritionists, to one platform to explore the beneficial aspects and challenges for an algal-based biorefinery. Chapters address cutting-edge issues surrounding algal cultivation, including genetic modification of algal strains, design and optimization of photobioreactors and open-pond systems, algal oil extraction techniques and algal-derived fuel products (biodiesel, bio-gasoline, jet fuels and bio-oil). Finally, the book considers the potential environmental impacts for establishing a sustainable algal biorefinery through lifecycle analysis, techno-economic assessment and supply chain management. This book will be an important resource for students, academics and professionals interested in algal cultivation, biofuels and agricultural engineering, and renewable energy and sustainable development more broadly.
