http://www.biofpr.com [Create Static Text for: biofprjournalFeedStaticText] http://www.biofpr.com/details/journalArticle/110906/Renewable_resources__green_biorefi_nery_separation_of_valuable_substances_from_f.html The aim of this study is to emphasize the potential of membrane technologies and the specifi c performance-limiting borders of pressure-driven (microfi ltration, ultrafi ltration, nanofi ltration, reverse ssmosis) as well as electro-membrane (electrodialysis, electrodialysis using bipolar membranes) techniques for the separation of valuable substances from silage press-juice obtained in green biorefi neries. Depending on the product, nanofi ltration can be considered a partially fractionating... 2008-12-09T00:00:00Z http://www.biofpr.com/details/journalArticle/110907/A_review_of_biogas_purification_processes.html Biogas is a valuable renewable energy carrier. It can be exploited directly as a fuel or as a raw material for the production of synthesis gas and/or hydrogen. Methane (CH4) and carbon dioxide (CO2) are the main constituents, but biogases also contain significant quantities of undesirable compounds (contaminants), such as hydrogen sulfide (H2S), ammonia (NH3) and siloxanes. The existence and quantities of these contaminants depend on the biogas source (i.e., landfills, anaerobic fermentation of... 2008-12-08T00:00:00Z http://www.biofpr.com/details/journalArticle/110908/The_integration_of_green_chemistry_into_future_biorefineries.html The use of biorefineries for the production of chemicals as well as materials and energy products is key to ensuring a sustainable future for the chemical and allied industries. Through the integration of green chemistry into biorefineries, and the use of low environmental impact technologies, we can establish future supply chains for genuinely green and sustainable chemical products. The first step in these future biorefineries should be the benign extraction of surface chemicals; here the use... 2008-12-08T00:00:00Z