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Another record breaking year for Tank Storage Asia

Tank Storage Asia reaffirmed its position as the leading event for the Asian tank storage...
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Italy to mandate advanced biofuels from 2018

Italy has become the first member of the European Union to mandate the use of renewable fuel...
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REG announces developments at two US plants

Renewable Energy Group (REG) has finished upgrades to its 30 MMgy biodiesel biorefinery in Mason...
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Evogene expands crop protection activities at Israel facility

Evogene, specialists in the improvement of crop productivity and economics for the food, feed...
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Upcoming Events
Tank Storage Germany
19 November 2014 - 20 November 2014
Hamburg, Germany
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Tank Storage Middle East
26 January 2015 - 27 January 2015
Abu Dhabi, UAE
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StocExpo 2015
17 March 2015 - 19 March 2015
Rotterdam, The Netherlands
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F.O. Lichts Ethanol
3 November 2014 - 6 November 2014
Budapest, Hungary
Oils and Fats Asia
5 November 2014 - 7 November 2014
Kuala Lumpur, Malaysia
Fuels of the Future 2015
19 January 2015 - 20 January 2015
Berlin, Germany
National Biodiesel Conference 2015
19 January 2015 - 22 January 2015
Texas, USA

 

 
Volume 3, Issue 6

Feature: Size matters
A crucial factor when moving biomass is the bulk density – weight is rarely a problem. Loose plant-based biomass has a low bulk density ranging from 50 to 130 kg/m3 depending on the plant species, particle density, and particle size. Particle size makes a huge difference, although tree trunks and sawdust might have the same particle density, you can pack sawdust tighter than a stack of logs. Much the same applies to a heap of straw, peanut shells or any other plant waste. Wood chips have a bulk density of around 200-400 kg/m3 which is less than tightly stacked logs but substantially better than ‘brash’- the loose unwieldy heap of branches and twigs left after the logs have been removed from a forest. Biomass densifi ed into bales and cubes is even better with bulk density in the range 120-700kg/m3. Not only that, handling is easier too. The handling properties of pellets and cubes are similar to those of grains. Well established methods and conventional bulk handling equipment can be used to handle pelleted and cubed biomass. Loose straw or corn stover is much less dense than wood with a bulk density of around 15-45 kg/m3, but simply baling it in the fi eld increases that to 100-190 kg/m3 whilst shredding and pelletising it increases the density to 550-700 kg/m3. An important part of densifi cation is removing water from the biomass. This lowers the physical density of the material but raises the energy density. It also means industry players do not waste energy by transporting water.


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Volume 8, Issue 5

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