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Lifecycle Study Finds Algae as Bioenergy Feedstock Has Higher Environmental Impacts than Conventional Crops in Energy Use, GHG Emissions, and Water Use; The Importance of Using Waste Streams

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Model scope includes all upstream processing of biomass material; conversion to liquid or solid fuel is intentionally excluded. For all crops, the entire plant was used to facilitate comparison on a total energy basis. Biofuel conversion processes were excluded from the scope of the analysis. Credit: ACS, Clarens et al.

Water 218
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New study finds key trade-off of algae-to-energy systems for transportation: excellent land use efficiency, but with mixed environmental burdens

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The team also suggested that algae systems can be either net energy positive or negative depending on the specific combination of cultivation and conversion processes used. environmental burdens (net energy use, water use, and GHG) per VKT. Earlier post.) Earlier post.) Arrow widths are proportional to mass flows. to 4.10.

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Life cycle study calculates Algenols algae-to-ethanol process can deliver 67% to 87% reduction in carbon footprint compared to gasoline

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Algenol Biofuels’ Direct to Ethanol technology is based on an intracellular photosynthetic process in cyanobacteria (blue-green algae) that produces ethanol that is excreted through the cell walls, collected from closed photobioreactors as a dilute ethanol-in-water solution, and purified to fuel grade ethanol. Algenol algae.

Carbon 246
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ARA Developing Catalytic Hydrothermal Process to Convert Plant Oils Into Non-Ester Biofuels (Biohydrocarbons)

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To overcome these shortcomings, a novel technical approach based on high-temperature water chemistry, known as catalytic hydrothermolysis (CH), has been proposed. The presence of water serves as a reactant, catalyst, and solvent for typically acid- or base-catalyzed reactions.

Oil 199
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Review of use of ionic liquids in production of 5-HMF from biomass; platform for renewable fuels and chemicals

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Moreover, it points out obstacles described in the studies presented and discusses perspectives in the application of ionic liquids to the conversion of biomass-derived carbohydrates. Ionic liquids, water, carbohydrates, a catalyst, etc. The direct conversion of raw biomass that must be investigated more extensively.

Renewable 199
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Researchers Propose Solar-Driven Biomass Gasification Pathway for Synthetic Fuel Production

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Hydrogen for reverse water gas shift reaction to avoid producing CO 2 during the process is produced by electrolyzing water, driven by solar power. For comparison, they also modeled the production of methanol using only biomass as a fuel and also using coal as source of both carbon and energy. Energy conversion efficiency (%).

Solar 186
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The EV Transition Explained: Can the Grid Cope?

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In comparison, the state’s goal is to achieve this amount by 2050. The city has provided incentives for the purchase of both EVs and charging ports, the installation of heat-pump water heaters , and the installation of solar and battery-storage systems. Or we can’t even have one EV charger go in.” Peak loading is the primary concern.

Grid 117