7 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Filtration"  
Results: 1 - 7
open access

Process of converting starch to glucose and glucose to lactic acid

Description: This document describes a method for converting starch into lactic acid of sufficient purity for use as a substrate for biodegradable plastics. The process is designed to work on industrial food waste streams such as potato wastes or cheese whey permeate. For potato waste, {alpha}-amylase and calcium chloride are added to the starch containing waste and incubated at a pH of 4--7, a temperature of 90--130{degree}C, and a pressure above 15 psi for not less than 15 minutes. At this point, glucoamy… more
Date: December 31, 1990
Creator: Tsai, TenLin; Sanville, C. Y.; Coleman, R. D. & Schertz, W. W.
Partner: UNT Libraries Government Documents Department
open access

Waste treatment process for removal of contaminants from aqueous, mixed-waste solutions using sequential chemical treatment and crossflow microfiltration, followed by dewatering

Description: It is an object of the claimed invention to combine chemical treatment with microfiltration process to treat groundwater, leachate from contaminated soil washing, surface and run-off waters contaminated with toxic metals, radionuclides and trace amounts of organics from variety of sources. The process can also be used to treat effluents from industrial processes such as discharges associated with smelting, mining and refining operations. Influent contaminants amenable to treatment are from a fe… more
Date: December 31, 1992
Creator: Vijayan, S.; Wong, Chi Fun & Buckley, L. P.
Partner: UNT Libraries Government Documents Department
open access

Process of converting starch to glucose and glucose to lactic acid

Description: This document describes a method for converting starch into lactic acid of sufficient purity for use as a substrate for biodegradable plastics. The process is designed to work on industrial food waste streams such as potato wastes or cheese whey permeate. For potato waste, {alpha}-amylase and calcium chloride are added to the starch containing waste and incubated at a pH of 4--7, a temperature of 90--130{degree}C, and a pressure above 15 psi for not less than 15 minutes. At this point, glucoamy… more
Date: January 1, 1990
Creator: Tsai, TenLin; Sanville, Cynthia Y.; Coleman, Robert D. & Schertz, William W.
Partner: UNT Libraries Government Documents Department
open access

A thermovoltaic semiconductor device including a plasma filter

Description: A thermovoltaic energy conversion device and related method for converting thermal energy into an electrical potential are disclosed. An interference filter is provided on a semiconductor thermovoltaic cell to pre-filter black body radiation. The semiconductor thermovoltaic cell includes a P/N junction supported on a substrate which converts incident thermal energy below the semiconductor junction band gap into electrical potential. The semiconductor substrate is doped to provide a plasma filte… more
Date: December 1, 1997
Creator: Baldasaro, Paul F.
Partner: UNT Libraries Government Documents Department
open access

A rigid porous filter and filtration method

Description: The present invention involves a porous rigid filter comprising a plurality of concentric filtration elements having internal flow passages and forming external flow passages there between. The present invention also involves a pressure vessel containing the filter for the removal of particulate from high pressure particulate containing gases, and further involves a method for using the filter to remove such particulate. The present filter has the advantage of requiring fewer filter elements du… more
Date: December 1998
Creator: Chiang, Ta-Kuan; Straub, Douglas, Straub L. & Dennis, Richard A.
Partner: UNT Libraries Government Documents Department
open access

Hydraulic pump with in-ground filtration and monitoring capability

Description: A hydraulically operated pump is described for in-ground filtering and monitoring of wells or other fluid sources, including a hollow cylindrical pump housing with an inlet and an outlet, filtering devices positioned in the inlet and the outlet, a piston that fits slidably within the pump housing, and an optical cell in fluid communication with the pump housing. A conduit within the piston allows fluid communication between the exterior and one end of the piston. A pair of O-rings form a seal b… more
Date: January 1, 1995
Creator: Hopkins, Charles D.; Livingston, Ronald R. & Toole, William R., Jr.
Partner: UNT Libraries Government Documents Department
open access

A gas stream clean-up filter and method for forming same

Description: A gas cleaning filter is formed in-situ within a vessel containing a fluidizable bed of granular material of a relatively large size fraction. A filter membrane provided by a porous metal or ceramic body or such a body supported a perforated screen on one side thereof is coated in-situ with a layer of the granular material from the fluidized bed by serially passing a bed-fluidizing gas stream through the bed of granular material and the membrane. The layer of granular material provides the filt… more
Date: December 1992
Creator: Mei, J. S.; Halow, J. S. & DeVault, J. D.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen