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Richard Venditti

Technical Service

The following are technical services that can be provided by Dr. Venditti through NCSU:

  1. Paper, fibers and pulp properties including chemical, surface, mechanical, optical, and structural characterization.
  2. Polymer extrusion at the 20 gram level with a twin screw extruder. Fiber spinning.
  3. Contaminant quantification.  This can be done for inks and toners in paper using scanner based image analysis system, optical microscope based image analysis system, an effective residual ink content (ERIC) system.  Both macro and micro stickies can be detected in a number of ways.  These include screening, solvent extraction, deposition on film, bottle, wire, dyeing/image analysis, and others.
  4. Deposition behavior of contaminants.  The deposition behavior of contaminants can be measured using a counter-rotating paper machine wire device.  After the deposition experiment, the contaminants can be detected either via image analysis or gravimetric analysis.
  5. Lab scale paper recycling operations.  These include pulping, screening, cleaning, washing, flotation, kneading, dispersion, and bleaching.
  6. Pilot plant paper recycling operations. These include These include pulping, screening, cleaning, washing, flotation, kneading, dispersion, and bleaching.  A pilot plant papermachine is also available.
  7. Paper recyclability determinations. Is your paper product recyclable with respect to current technology in paper recycling?
  8. Life cycle analysis and complex chemical process simulations.
  9. Carbonization experiments.
  10. Aquatic biodegradability experiments for paper, textiles, plastics, etc…….
  11. Laundering microparticle generation.
  12. Preparation of cellulose nanofibrils
  13. Scanning electron microscopy with EDS

Detailed list of Paper Recycling Equipment Available:

Venditti points to pressure gauge - Richard Venditti - College of Natural Resources at NC State University
  • Adirondack 450 H Temperature Controlled High Consistency Pulper, 3 gallons
  • Adirondack Maelstrolm Temperature Controlled Low Consistency Pulper, 3 gallons
  • Voith Vibratory Flat Screen (two), 2 gallons
  • Wemco Flotation Cell (two), 1 gallon
  • Lab Scale Kneader, Double Shaft, needs about 2 lb fiber
  • Carver Heated Press
  • Tappi Disintegrator (two), 1 gallon
  • Atlas Laboratory Wringer  Press,
  • Waring Commercial Heavy Duty Blender, 3 gallon
  • Pulmac Master Screen with several slotted and hole plates
  • Hydrapulper with side rotor, 4 gallon
  • PFI refining Mill
  • Masuko Nano Grinder
  • Hobart Mixer, High Consistency, 2 gallon
  • Flat Screen, 20 gallon capacity
  • Ross High Pressure Mixer, High Consistency Kneading, 4 gallons
  • Large scale centrifuge for thickening with cheese cloth,  40 gallon
  • Valley Beater (Two)
  • Bauer McNett Fiber Classification, 5 screen unit
  • 200 Gallon Low to High Consistency pulper
  • Lamort 6 gallon high consistency pulper
  • Lamort 6 gallon flotation cell
  • Gauld and Ahlstorm pilot scale pressure screens, variety of baskets
  • Spout Bauer pilot scale refiner, 10 inch
  • Beloit posiflow and through flow clearers pilot plant
  • Celleco forward cleaner, pilot plant
  • Pilot papermachine for washing
  • Side hill screen for thickening, pilot plant