The challenges from agricultural requirements to produce food and energy can only be met if we use all options available for increasing productivity and safeguarding harvests. Innovative crop protection products and plant biotechnology provide solutions to reduce the energy consumption in agriculture while conserving natural resources and contributing to mitigate the effect of climate change.
Salman Zafar - Renewable Energy Advisor
Biofuel Feedstock Constraints
- Logging residues from conventional harvest operations and residues from forest management and land clearing operations
- Removal of excess biomass (fuel treatments) from timberlands and other forestlands
- Fuelwood extracted from forestlands
- Primary wood processing mill residues
- Secondary wood processing mill residues
- Black liquor
- Urban wood residues — construction and demolition debris, tree trimmings, packaging wastes and consumer durables
- Biochemical – in which enzymes and other micro-organisms are used to convert cellulose and hemicellulose components of the feedstocks to sugars prior to their fermentation to produce ethanol;
- Thermo-chemical – where pyrolysis/gasification technologies produce a synthesis gas (CO + H2) from which a wide range of long carbon chain biofuels, such as synthetic diesel or aviation fuel, can be reformed.
- carbon capture from smokestacks to increase algae growth rates
- processing of algae biomass through gasification to create syngas
- growing carbohydrate rich algae strains for cellulosic ethanol
- using waste streams from municipalities as water sources
Algae have certain qualities that make the organism an attractive option for biodiesel production. Unlike corn-based biodiesel which competes with food crops for land resources, algae-based production methods, such as algae ponds or photobioreactors, would “complement, rather than compete” with other biomass-based fuels. Unlike corn or other biodiesel crops, algae do not require significant inputs of carbon intensive fertilizers. Some algae species can even grow in waters that contain a large amount of salt, which means that algae-based fuel production need not place a large burden on freshwater supplies.
The content & opinions in this article are the author’s and do not necessarily represent the views of AltEnergyMag
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