| Abstract: | In the recent years, Life Cycle Assessment (LCA) inventory accounting for all processing inputs and outputs, evaluates the benefits and risks occurred in the long term. It has become a helpful tool to quantify larger scale of production of multiple biofuels products in terms of energy efficiency and pollutants or reduction of Green House Gas (GHG) emissions and, the direct impacts or indirect consequences. While evaluations of resulting risks and uncertainty during the process of production are compared through mathematic models, and legalized ISO system, LCA are becoming an important sustainability measurement means for Pilots projects, Industrial producers and Government decision makers. In particular, third generation advanced biofuels production from algae culture, and second generation land crop productions as well, devoted to transport combustion, are sources of debate. Yet, due the interdisciplinary boundaries, large variability of the results are challenging and call to be analyzed and further refined by different fields specialists (biology, physiology, biogeochemistry, ecology, oceanography, economy,…) and determine more accurately the interactions and ecosystems chains, themselves. It seems the scarce inventories satisfy with net energy ratio or low carbon alternative fuel performance characteristics and are not at all considering: ecological interactions and existence of cycles, soil, water, microbiological chains and carbon balance, nor, the components of the production at each stage of the conversion and total biomass involved or environmental impact for the long term. This calls to more scientists of different fields to involve in the research and by working together manage to make up with missing understanding of the chain reaction and ecosystems balance phenomena and offer closer analyze of by products, resource and waste equilibrium versus high productivity-low carbon and low price energy. |
