By Sam A. Rushing, Special to The Digest At this time, it could be a great opportunity for the right source to take a look at the possibilities of making money with CO2 production and distribution on their own; or even reevaluate the current production / supply arrangement with a current gas company supplier, before […]
By Douglas L. Faulkner, “The Cleantech Conservative” Special to The Digest Mr. Trump won the Presidency by promising to get government out of the way of rejuvenating American manufacturing, energy production and agriculture. He is now repaying those constituencies by asking them to do just that – – help him help them. But, after eight […]
By Brent Erickson, Executive VP, Biotechnology Innovation Organization Special to The Digest Members of the U.S. Senate are questioning whether Carl Icahn’s lobbying to change the Renewable Fuel Standard creates an ethics conflict with his role as advisor in the Trump administration. In addition to the ethics question, Members of Congress and some in the […]
By Gregory T. Benz Special to The Digest In a previous article (ref 1), it was stated that both pitched blade turbines and hydrofoils could be successfully used to agitate high-solids lignocellulosic materials, but that the hydrofoil could do the job with less power and torque. This article expands on that comment. A little history […]
By Daniel A. Lane and Joel A. Stone, Lee Enterprises Consulting Special to The Digest The US commercial petroleum industry started with the drilling by retired railroad conductor Edwin Drake of a well near Titusville, PA in 1859. Drake’s well sparked an oil boom and over the next couple of years, and US petroleum production […]
By Dr. Bernard Cooker, Chemical Processing Solutions, Consultant with Lee Enterprises Consulting Special to The Digest 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. […]
By Lorenz Bauer, Ph.D., Lee Enterprises Consulting Special to The Digest Sustainability has become a key concern in polyurethane industry. Reducing the environmental impact of polymers by replacing fossil derived carbon, using more environmental friendly processes and reducing and recycling the carbon used either directly or indirectly is a corporate goal of many producers. The use […]
Is your business model based on government regulations or fuel science? By Bill Brandon, Special to The Digest In light of the recent article on Butamax, I feel a response from the perspective of automakers is appropriate. One of the earlier articles referenced asked “ where’s butanol, or other substitutes for gasoline besides ethanol?” and went […]
by Doug Durante, Executive Director of the Clean Fuels Development Coalition Special to The Digest The recent announcement that the Trump Administration was taking another look at Corporate Average Fuel Economy (CAFE) standards was a welcome reality check for what is a complex and multi-layered issue. There was an immediate knee jerk reaction that this […]
By Gregory T. Benz, Lee Enterprises Consulting Special to The Digest Lignocellulosic slurries at high solids concentrations (10-30%) can be quite viscous. The author has seen some where the viscosity at a shear rate of 1/s is higher than 400,000 cP. Conventional agitator impeller selection guidelines would lead one to use helical ribbon impellers (figure […]
