Woody biomass pretreatment for cellulosic ethanol production

This review presents a comprehensive discussion of the key technical issues in woody biomass pretreatment: barriers to efficient cellulose saccharification, pretreatment energy consumption, in particular energy consumed for wood-size reduction, and criteria to evaluate the performance of a pretreatment

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3. Biological processes depend on energy flow through the Earth system.
5. Energy decisions are influenced by economic, political, environmental, and social factors.
6. The amount of energy used by human society depends on many factors.
4. Various sources of energy are used to power human activities.

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3.6 Humans are part of Earth’s ecosystems and influence energy flow through these systems.

4.5 Humans generate electricity in multiple ways.

5.4 Energy decisions are influenced by economic factors.

4.1 Humans transfer and transform energy from the environment into forms useful for human endeavors

4.6 Humans intentionally store energy for later use in a number of different ways.

6.3 Human demand for energy is increasing.

4.2 Humans use of energy is subject to limits and constraints.

6.4 Earth has limited energy resources.

4.7 Different sources of energy and different ways energy is transformed, transported, and stored.

5.3 Energy decisions can be made using a systems-based approach.

4.4 Humans transport energy from place to place.