Biofuels are combustible fuels derived from recently produced biomass, as opposed to ancient biomass, which is the source of petroleum products. The term biofuel usually refers to liquid fuels used as replacements for or additives to petroleum-based liquid fuel. This new 6-page publication of the UF/IFAS Department of Soil and Water Sciences serves as an introduction to biofuels for Extension educators and anyone interested in learning basic terminology, concepts, and impacts of biofuels as a replacement for fossil fuels. Written by Tanumoy Bera, Kanika S. Inglett, and Ann C. Wilkie.
Biosolids are the liquid, semisolid, and solid fractions of the treated waste stream from a domestic waste water treatment facility. This 5-page fact sheet, part of the Florida Biosolids series, provides an overview of biosolids, biosolids classes, pathogen reduction, vector attraction reduction, and metal contaminants, and also discusses the purpose, applicability, and history of Chapter 62-640, Florida Administrative Code. Written by John Hallas, Ann C. Wilkie, and Cheryl L. Mackowiak, and published by the UF Department of Soil and Water Science, December 2015.
Biosolids are the liquid, semisolid, and solid fractions of the treated waste stream from a domestic wastewater treatment facility (WWTF). On August 29, 2010, the Florida Department of Environmental Protection (FDEP) formally adopted its rule for the management of wastewater biosolids, Chapter 62-640, Florida Administrative Code (F.A.C. 2010). This 6-page fact sheet from the Florida Biosolids series covers applicability of the rule, the intent of Chapter 62-640, F.A.C., land application requirements, biosolids storage, cumulative application limits, setback distances, pH, soil depth, runoff prevention, additional application site restrictions for Class B biosolids, NMPs, and special geographic areas. Written by John Hallas, Cheryl L. Mackowiak, and Ann C. Wilkie, and published by the UF Department of Soil and Water Science, October 2015.
Livestock wastes can be important sources of nutrients for crops, but manure must be managed properly to prevent loss of nutrients to the environment in air or ground and/or surface water. Stabilization of manure is important prior to successfully recycling the organic material back to arable lands. Methods for stabilizing livestock wastes include composting, aerobic digestion, anaerobic digestion, lime stabilization, and heat drying. The stabilization process reduces the organic matter and water contents, unpleasant odors, concentrations of pathogenic microorganisms, and weed seeds. Anaerobic digestion (AD), which is the topic of this fact sheet, also results in the production of renewable energy in the form of methane-rich biogas. This 10-page fact sheet informs farmers and Extension agents about types of anaerobic digester systems used in the United States with various manure-handling systems. It points out digester systems currently being used in Florida and the benefits of managing livestock manure with a digester system. Written by Rishi Prasad, George Hochmuth, and Ann C. Wilkie, and published by the UF Department of Soil and Water Science, March 2014.