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Zastosowanie procesu nanofiltracji do odzysku wody z popłuczyn mleczarskich

Zander L., Śmietana Z., Zander Z., Banaszczyk P.

Inżynieria i Aparatura Chemiczna

2008

Nr 6

51-52

The tubular nanofiltration membrane AFC30 has been used for separation of washings obtained durind rinsing operation applied as the first step of cleaning process in dairy plants. The permeate flux and permeation resistance as variables dependent on separation time have been evaluated. It has been shown, that nanofiltration of washings enables efficient recovery of water and milk solids.

Resistance of Medical Gloves to Permeation by Methyl Methacrylate (MMA), Ethylene Glocol Dimethacrylate (EGDMA), and 1,4-Butanediol Dimethacrylate (1,4-BDMA)

Lonnroth E. C., Ruyter I. E.

International Journal of Occupational Safety and Ergonomics

2003

Vol. 9, No. 3

289--299

Gloves afford hand protection by minimizing skin contact. The effectiveness of medical gloves to protect against permeation of the monomers, methyl methacrylate (MMA), ethylene glycol dimethacrylate (EGDMA), and 1,4-butanediol dimethacrylate (1,4-BDMA), was assessed focusing on permeation rates and degradation of glove materials caused by monomer contact. Fifteen different brands of gloves were tested using a European Standard procedure. Surface images of glove materials before and after exposure to the monomer mixture were obtained using a scanning electron microscope. The standard is not applicable as the only method for estimating the safety of gloves, but it is useful as guideline together with the cumulative permeation of acrylic monomers. Monomer contact on the outside resulted in substantial swelling of most glove materials, and structure changes of the inside surface.