Abstract:
Provided are methods of petroleum sequestration, which use electrospun microtubes capable of sequestering the petroleum from the water, and method of depleting and optionally degrading petroleum from water using floating devices which comprise the electrospun microtube attached to a floating carrier.
Abstract:
Ein Verfahren zum aeroben Betrieb von Schwebebettreaktoren mit Innen und außen mit Rippen und/oder Rillen versehenen rohrförmigen Schwebekörpern, bei dem dem zu reinigenden Abwasser eine verdünnte, wässrige Lösung stabilisierter Folsäure zudosiert wird und bei dem sauerstoffhaltiges Gas mit einer für aerobe Mikroorganismen ausreichenden Belüftungsrate (VL), die als Quotient aus der stündlich in den Schwebebettreaktor eingeführte Luftmenge in m 3 /h geteilt durch die Querschnittsfläche des Schwebebettreaktors in m 2 definiert ist, zugeführt wird, ist dadurch gekennzeichnet, dass die Belüftungsrate (VL) derart gewählt wird, dass sich die Mikroorganismen vorwiegend nur auf der Innenseite der Schwebekörper ansiedeln.
Abstract:
There is provided a method for treating spent metal working fluid (MWF), comprising the steps of: (a) providing a biofilm of microorganisms on a solid support matrix in a first bioreactor; (b) transferring at least a portion of the solid support matrix comprising the biofilm of microorganisms from the first bioreactor into a second bioreactor; and (c) incubating the microorganisms in the second bioreactor to reduce the chemical oxygen demand of the spent MWF contained therein.
Abstract:
A method of in situ treatment of fracture fluid that is contaminated with a heavy metal may include passing a flow of contaminated fracture fluid through a reactor vessel. The reactor vessel may contain a plurality of biofilm retaining structures. Each of the structures may at least be partially coated with a biofilm. Additionally, the biofilm may include a plurality of bacteria retained in a matrix and the matrix may include DNA, protein and carbohydrates produced by the bacteria.
Abstract:
A method of in situ treatment of wastewater that is contaminated with a heavy metal may include passing a flow of contaminated wastewater through a reactor vessel. The reactor vessel may contain a plurality of biofilm retaining structures. Each of the structures may at least be partially coated with a biofilm. Additionally, the biofilm may include a plurality of bacteria retained in a matrix and the matrix may include DNA, protein and carbohydrates produced by the bacteria.
Abstract:
A system and method are provided for removal of undesirable substances from a body of liquid. The system can include an aeration structure (10) having a continuously inclined surface (14) configured to provide an interaction of air bubbles (22) against substantially an entire length of the continuously inclined surface (14) while the air bubbles are moving toward a top of the body of liquid. The continuously inclined surface (14) can be substantially submerged in the body of liquid. A bio-film of diverse bacteria colonies (16) is disposed on the continuously inclined surface (14), and a high surface area-to-volume structure (102) is located in proximity to the aeration structure (10), upon which a bio-film of bacteria colonies (16) can be formed. An aeration system (18) is coupled to an air supply system (26) which releases the air bubbles (22) toward a bottom of the continuously inclined surface (14), such that the air bubbles (22) move along the continuously inclined surface (14) as they rise so as to (i) create a variety of aerobic-anaerobic conditions at the bio-film (16) and (ii) engage the air bubbles (22) in a continuous mixing of a micro climate for the bio- film (16) in response to an orientation of the continuously inclined surface (14) and (iii) provide airlift circulation of water from bottom to top of the aeration structure.