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Comment: More to paper than cellulose (Score 5, Interesting) 185

by b4thyme (#37260340) Attached to: Making Fuel With Newspapers and Bacteria
A larger component percentage of the fiber in newsprint is hemi-cellulose and lignin than cellulose. Newsprint is generally made in a mechanical process rather than a chemical process so you are going to be left with all the turpentine and tall oil in the pulp as well. Are you going to just burn the rest? It seems awfully wasteful given how expensive your process is going to be. It is generally accepted that when it comes to newsprint, it is better to burn it than to recycle it as the fuel expended in the collection of it and energy and chemicals expended to de-ink it outweigh the value of the crappy chewed up fiber you get from recovering it. I am a process engineer in a paper mill
Biotech

+ - Miscanthus Twice as Productive as Switchgrass->

Submitted by
b4thyme
b4thyme writes "The results are in. Frank Dohleman of the plant biology department at University of Illinois at Urbana-Champaign and his colleagues have studied the difference in productivity between the two most cited potential energy crops: switchgrass and miscanthus. The results are staggering. Miscanthus was found to be more than twice as productive as switchgrass according to the criteria cited for the following reasons:
  1. Miscanthus can gain greater amounts of photosynthetic carbon per unit of leaf area
  2. Miscanthus has a greater leaf area
  3. Miscanthus has a longer growing season
I was interested in learning about the growing condition/climate requirements for these two plants. It was delightful to find out that both switchgrass and miscanthus are very productive in a wide range of climates which means that farmers in temperate climates will not be at a strategic disadvantage as they are with sugar (from sugarcane) to ethanol production."

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