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Low-Cost Feedstock Conversion to Biodiesel via Ultrasound Technology

Babajide, Omotola; Petrik, Leslie; Amigun, Bamikole; … - In: Energies 3 (2010) 10, pp. 1691-1703

Biodiesel has attracted increasing interest and has proved to be a good substitute for fossil-based fuels due to its environmental advantages and availability from renewable resources such as refined and waste vegetable oils. Several studies have shown that biodiesel is a better fuel than the...

Persistent link: https://www.econbiz.de/10011030960

Reaction Engineering of Direct Coal Liquefaction

Robinson, Ken K. - In: Energies 2 (2009) 4, pp. 976-1006

Direct coal liquefaction has been studied and practiced since the 1930s. It was used in Germany during World War II to produce synthetic fuels when there was no oil allowed into the country. Since then, it has been studied in the United States and many different technologies have been...

Persistent link: https://www.econbiz.de/10010668174

Determination of Methane and Carbon Dioxide Formation Rate Constants for Semi-Continuously Fed Anaerobic Digesters

Moestedt, Jan; Malmborg, Jonas; Nordell, Erik - In: Energies 8 (2015) 1, pp. 645-655

kinetics can be evaluated. In this study, the rate constants of the fermentative hydrolysis step (kc) and the …

Persistent link: https://www.econbiz.de/10011123001

Hot Water Pretreatment of Boreal Aspen Woodchips in a Pilot Scale Digester

Yan, Jipeng; Liu, Shijie - In: Energies 8 (2015) 2, pp. 1166-1180

formic acid are investigated due to their catalytic effect on the extraction reactions. Zeroth-order kinetics models are …

Persistent link: https://www.econbiz.de/10011160783

A Study on the Hydrotreating of Coal Hydroliquefaction Residue and its Kinetics

Huang, Jue; Lu, Xilan; Zhang, Dexiang; Gao, Jinsheng - In: Energies 3 (2010) 9, pp. 1576-1585

Hydro-conversion of coal hydroliquefaction residue obtained from a 6t/day pilot plant of Shenhua Group in Shanghai was carried out under the hydrotreating condition. The coal hydroliquefaction residue and its product were extracted in sequence with n-hexane, toluene and tetrahydrofuran in a...

Persistent link: https://www.econbiz.de/10011030788

A Complementary Biodiesel Blend from Soapnut Oil and Free Fatty Acids

Chen, Yi-Hung; Tang, Ting-Cheng; Chiang, Tsung-Han; … - In: Energies 5 (2012) 8, pp. 3137-3148

described by first-order reaction rate kinetics. In addition, the natural logarithm of IP (ln IP) at various concentrations of …

Persistent link: https://www.econbiz.de/10011030899

A Novel Pumped Hydro Combined with Compressed Air Energy Storage System

Wang, Huanran; Wang, Liqin; Wang, Xinbing; Yao, Erren - In: Energies 6 (2013) 3, pp. 1554-1567

A novel pumped hydro combined with compressed air energy storage (PHCA) system is proposed in this paper to resolve the problems of bulk energy storage in the wind power generation industry over an area in China, which is characterised by drought and water shortages. Thermodynamic analysis of...

Persistent link: https://www.econbiz.de/10010668187

Energy and Exergy Analysis and Optimization of Combined Heat and Power Systems. Comparison of Various Systems

Feidt, Michel; Costea, Monica - In: Energies 5 (2012) 9, pp. 3701-3722

The paper presents a comparison of various CHP system configurations, such as Vapour Turbine, Gas Turbine, Internal Combustion Engine, External Combustion Engine (Stirling, Ericsson), when different thermodynamic criteria are considered, namely the first law efficiency and exergy efficiency....

Persistent link: https://www.econbiz.de/10011031057

Microbial Conversion of Waste Glycerol from Biodiesel Production into Value-Added Products

Li, Cheng; Lesnik, Keaton L.; Liu, Hong - In: Energies 6 (2013) 9, pp. 4739-4768

capable of being utilized by a conventional diesel engine. However, the biodiesel production process generates glycerol …-containing waste streams which have become a disposal issue for biodiesel plants and generated a surplus of glycerol. A value …-added opportunity is needed in order to compensate for disposal-associated costs. Microbial conversions from glycerol to valuable …

Persistent link: https://www.econbiz.de/10010692417

An Energy Management System of a Fuel Cell/Battery Hybrid Boat

Han, Jingang; Charpentier, Jean-Frederic; Tang, Tianhao - In: Energies 7 (2014) 5, pp. 2799-2820

All-electric ships are now a standard offering for energy/propulsion systems in boats. In this context, integrating fuel cells (FCs) as power sources in hybrid energy systems can be an interesting solution because of their high efficiency and low emission. The energy management strategy for...

Persistent link: https://www.econbiz.de/10010762610