Emerging Feedstocks – Genetically Modified Trees

Genetically modified trees have been extensively academically explored as ideal feedstocks for pulp/paper and cellulosic ethanol. Novel trees include modifications that increase cellulose content, reduce lignin content, and even change lignin monolignol ratios. However, companies considering investing in these engineered managed forests need to examine technoeconomic feasibility prior to adoption. Specific attention to regulations, site…

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Feedstocks: Agricultural

Agricultural Feedstocks for the renewable energy industry include starch and sugar crops (e.g., corn, sorghum), grass crops (e.g., switch grass, miscanthus), oil crops (e.g., soybean, sunflowers), and crop residues (e.g., corn stover, corn cobs, nut shells).  Agricultural feedstocks can create sustainable paths by using marginal croplands to generate energy products, and by adding value or…

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Renewable Diesel Projects

As of this 2022 writing, it appears to be a boom time for renewable diesel projects. The Energy Information Administration estimates that renewable diesel production capacity in North America will surge by up to 500% in a few short years.  The question facing the industry is whether there are enough feedstock fats, oils, and greases…

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Renewable Diesel Feedstocks

The world of renewable diesel feedstocks is key to the emerging markets for hydrotreated oil and fats.  The world runs on about 240 million mt per year (tpy) of fats and oils. There is some 10% or double counting as virgin oils and fats that are used in cooking often return to the world market…

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Hydrothermal Upgrading

What is hydrothermal upgrading?  Water above 100 °C changes from a liquid phase to a gas phase. One can change the temperature boundary by changing the pressure – a low pressure lowers the boiling point, similarly increasing the pressure maintains a liquid phase at higher temperatures than the boiling point – precisely why pressure cookers…

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Lignocellulosic Biomass Deconstruction

By Dr. B. Cooker, Chemical Processing Solutions, Consultant with Lee Enterprises Consulting Summary Cheap, plentiful lignocellulosic biomass (LCB), consisting of cellulose, hemicellulose and lignin, is deconstructed to release useful chemical intermediates in the bioeconomy. These include glucose from cellulose, glucose and other sugars from hemicellulose, and oxygenated benzene derivatives (OBTX) from lignin. Reviewed here are…

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Biomass Supply Chain Expert – Agriculture

What is an agricultural biomass supply chain expert? Simply put, it is a person that understands the dozens of issues that will affect the production of the tens of thousands of tons of feedstock that a project needs to be profitable as it produces a fuel or chemical.  The expert should know how to get…

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Renewable Energy Feedstock Availability

Renewable energy systems based on biomass feedstocks need abundant supplies of feedstock, not only to maintain the physical facility with enough material to process, but also enough excess feedstock to ensure that there is a healthy competition among suppliers to keep prices competitive.  Renewable energy plants of all kinds, that can utilize more than one…

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