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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Elucidation of the role of constraints in economic model predictive control
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Economics of plant oil recovery: A review
Plant oil is a major agricultural commodity used in food, feed, and chemicals. Presently plant oil is produced from oil seeds either using mechanical pressing or solvent extraction. These technologies have steadily improved for increased oil recovery; however, production cost is especially important for a commodity. Here in this paper three technologies and their costs are reviewed for on-farm pressing, industrial mechanical pressing, and solvent extraction. Solvent extraction is the dominant technology because it offers high oil recovery and low production cost. In contrast, industrial mechanical pressing has the highest production cost because of its low oil yield; nevertheless, the simple process results in the lowest fixed capital investment. For on-farm pressing, lower material cost results in lower production cost than industrial mechanical pressing. Additionally, credits from co-products play an important role in determining total revenues, especially for mechanical pressing. Therefore, broadening the applications and values of the co-product is also critical for profitability for the plant oil industry.
Feedstock loss from drought is a major economic risk for biofuel producers
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Techno-economic analysis of ash removal in biomass harvested from algal turf scrubbers
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Performance and Techno-Economic Assessment of Several Solid-Liquid Separation Technologies for Processing Dilute-Acid Pretreated Corn Stover
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Comprehensive techno-economic analysis of wastewater-based algal biofuel production: A case study
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Techno-economic and Monte Carlo probabilistic analysis of microalgae biofuel production system
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Techno-Economic Analysis of Amine-based CO2 Capture Technology: Hunter Plant Case Study
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Eco-efficient cements: Potential economically viable solutions for a low-CO2 cement-based materials industry
The main conclusions of an analysis of low-CO{sub 2}, eco-efficient cement-based materials, carried out by a multi-stakeholder working group initiated by the United Nations Environment Program Sustainable Building and Climate Initiative (UNEP-SBCI) are presented, based on the white papers published in this special issue. We believe that Portland-based cement approaches will dominate in the near future due to economies of scale, levels of process optimisation, availability of raw materials and market confidence. Two product-based approaches can deliver substantial additional reductions in their global CO{sub 2} emissions, reducing the need for costly investment in carbon capture and storage (CCS) over the next 20–30 years:1.Increased use of low-CO{sub 2} supplements (SCMs) as partial replacements for Portland cement clinker. 2.More efficient use of Portland cement clinker in mortars and concretes. However, other emerging technologies could also play an important role in emissions mitigation in the longer term, and thus merit further investigation.