Abstract: The subject invention provides advantageous systems and processes for anaerobic digestion of organic waste streams, particularly agricultural waste streams. According to this invention, a new process is provided in which a liquid fraction from an organic waste stream comprising soluble compounds is segregated and incubated in a reactor separate from the solids fraction of the organic waste stream. Digestion of waste in both reactors occurs substantially simultaneously and both reactors produce biogas (thus both reactors function essentially like single stage reactors but allow for continuous or intermittent loading). According to one aspect of the invention, at least one cross-flow baffle is provided for use in an anaerobic digester to collect biogas and break up clumped solids in the reactor. In another aspect of the invention, packing media for use in an anaerobic digester is provided.
Type:
Grant
Filed:
March 14, 2013
Date of Patent:
February 24, 2015
Assignee:
University of Florida Reearch Foundation, Inc.
Inventors:
Pratap Pullammanappallil, Kerry Johanson, Ioannis Martinos Polematidis, John M. Owens, David P. Chynoweth
Abstract: Thiophene containing water-soluble oligomers were synthesized and characterized. The photophysical properties of these compounds were studied; transient absorption spectroscopy was used to probe the triplet excited state and their ability to sensitize singlet oxygen was spectroscopically monitored in deuterated methanol. The above compounds were tested for their light activated biocidal properties against S. aureus both under UV and visible radiation. Among the oligomers studied, the terthiophene derivative was found to kill the bacteria efficiently.
Type:
Application
Filed:
July 5, 2012
Publication date:
November 20, 2014
Applicants:
STC.UNM, University of Florida Reearch Foundation, Inc.
Inventors:
Kirk S. Schanze, Anand Parthasarathy, Subhadip Goswami, David G. Witten, Eunkyung Ji, Thomas S. Corbitt, Dimitri Dascier