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Corn and Cellulosic Ethanol Cause Major Problems

Pimentel, David; Pimentel, Marcia - In: Energies 1 (2008) 1, pp. 35-37

Crops for biofuels squanders cropland, water, and energy resources vital for food production needed for people.

Persistent link: https://www.econbiz.de/10010676065

Daniell, James; Köpke, Michael; Simpson, Séan Dennis - In: Energies 5 (2012) 12, pp. 5372-5417

biomass is an area currently undergoing intensive research and development, with the first commercial units expected to … commence operation in the near future. In this process, biomass is first converted into carbon monoxide (CO) and hydrogen (H …. Several studies have been performed over the last few years to optimise both biomass gasification and syngas fermentation with …

Persistent link: https://www.econbiz.de/10011031291

A Review of Ultrahigh Efficiency III-V Semiconductor Compound Solar Cells: Multijunction Tandem, Lower Dimensional, Photonic Up/Down Conversion and Plasmonic Nanometallic Structures

Tanabe, Katsuaki - In: Energies 2 (2009) 3, pp. 504-530

Solar cells are a promising renewable, carbon-free electric energy resource to address the fossil fuel shortage and global warming. Energy conversion efficiencies around 40% have been recently achieved in laboratories using III-V semiconductor compounds as photovoltaic materials. This article...

Persistent link: https://www.econbiz.de/10010668143

Addendum: Tanabe, K. A Review of Ultrahigh Efficiency III-V Semiconductor Compound Solar Cells: Multijunction Tandem, Lower Dimensional, Photonic Up/Down Conversion and Plasmonic Nanometallic Structures. Energies, 2009, 2, 504-530.

Tanabe, Katsuaki - In: Energies 2 (2009) 3, pp. 695-696

I have stated in my recent review article that no direct observation of multiple exciton generation (MEG) in the shape of photocurrent extracted from a semiconductor had been made yet. [...]

Persistent link: https://www.econbiz.de/10011031334

A Path Forward for Low Carbon Power from Biomass

Cuellar, Amanda D.; Herzog, Howard - In: Energies 8 (2015) 3, pp. 1701-1715

The two major pathways for energy utilization from biomass are conversion to a liquid fuel (i.e., biofuels) or … conversion to electricity (i.e., biopower). In the United States (US), biomass policy has focused on biofuels. However … percentage of biomass with coal) (5%–10% biomass), medium co-firing (15%–20% biomass), and dedicated biomass firing (100% biomass …

Persistent link: https://www.econbiz.de/10011186335

Biofuel Impacts on World Food Supply: Use of Fossil Fuel, Land and Water Resources

Pimentel, David; Marklein, Alison; Toth, Megan A.; … - In: Energies 1 (2008) 2, pp. 41-78

The rapidly growing world population and rising consumption of biofuels are increasing demand for both food and biofuels. This exaggerates both food and fuel shortages. Using food crops such as corn grain to produce ethanol raises major nutritional and ethical concerns. Nearly 60% of humans in...

Persistent link: https://www.econbiz.de/10010668130

Waste Cooking Oil as an Alternate Feedstock for Biodiesel Production

Chhetri, Arjun B.; Watts, K. Chris; Islam, M. Rafiqul - In: Energies 1 (2008) 1, pp. 3-18

As crude oil price reach a new high, the need for developing alternate fuels has become acute. Alternate fuels should be economically attractive in order to compete with currently used fossil fuels. In this work, biodiesel (ethyl ester) was prepared from waste cooking oil collected from a local...

Persistent link: https://www.econbiz.de/10011031301

Crop Management Effects on the Energy and Carbon Balances of Maize Stover-Based Ethanol Production

Woli, Prem; Paz, Joel - In: Energies 8 (2014) 1, pp. 278-303

increasing feedstock yields should be emphasized over reducing travel distance. The NEV and CCB values indicated that stover …

Persistent link: https://www.econbiz.de/10011106132

Supercritical Water Gasification of Biomass: A Literature and Technology Overview

Yakaboylu, Onursal; Harinck, John; Smit, K. G.; Jong, … - In: Energies 8 (2015) 2, pp. 859-894

promising technology for the efficient conversion of wet biomass into a product gas that after upgrading can be used as … subject of many research works in the field of thermochemical conversion of wet biomass. This article reviews the state of the … chemistry of reactions to the process challenges of such a biomass based supercritical water gasification process plant. …

Persistent link: https://www.econbiz.de/10011147129

The Impact of a Mild Sub-Critical Hydrothermal Carbonization Pretreatment on Umbila Wood. A Mass and Energy Balance Perspective

Cuvilas, Carlos Alberto; Kantarelis, Efthymios; Yang, … - In: Energies 8 (2015) 3, pp. 2165-2175

Over the last years, the pretreatment of biomass as a source of energy has become one of the most important steps of … biomass conversion. In this work the effect of a mild subcritical hydrothermal carbonization of a tropical woody biomass was …

Persistent link: https://www.econbiz.de/10011206962