Detergents separation

Polypyrrole can be prepared with n-alkyl sulfates and sulfonates as anions 490), forming layered structures with a bilayer of the detergent separating layers of polypyrrole. 

The separation of neutral and acidic polysaccharides, and of polysaccharide and nucleic acid, can be effected with cationic detergents separation of polysaccharide and protein is frequently made by the well established method of Sevag. ... 

This process involves partial crystallization under controlled conditions and separation of the remaining liquid from the solidihed part. Dry, solvent, and detergent fractionations are normally used in this system. The hrst system is the simplest separation it involves cooling the oil to a desired end temperature and then hltering the liquid oil on a vacuum hlter or in a membrane press hlter. The latter two systems, involving solvent or detergent separation of the crystallized phase from the liquid phase, are not widely used, due to their high production costs, capital investments, and contamination. 

Fig. 8-52. Analysis of condensed phosphates in detergents. - Separator column IonPac AS7 eluent 0.07 mol/L HN03 flow rate 0.5 mL/min detection photometry at 330 nm after reaction with ferric nitrate injection 50 pL of a 0.1% washing powder solution.

Fig. 8-55. Analysis of inorganic anions in a detergent. - Separator column IonPac AS3 eluent 0.0028 mol/L NaHC03 + 0.0022 mol/L Na2C03 flow rate 2.3 mL/min detection suppressed conductivity injection 50 pL of a 0.1% detergent solution (1 5 diluted).

Figure 10.184 Analysis of condensed phos- volume 50 pL sample 0.1% washing powder phates in a detergent. Separator column Ion- solution peaks (1) orthophosphate, (2) pyro-Pac AS7 eluent 0.07 mol/L HNO3 flow rate phosphate, (3) sulfate, and (4)...

Figure 10.185 Analysis of Inorganic and organic complexing agents in a detergent. Separator column lonPac AS7 eluent ...

Fig. 9-117. Analysis of inorganic and organic complexing agents in a detergent. - Separator column lonPac AS7 eluant 0.03 mol/L HNO3 flow rate and detection see Fig. 9-116 injection 50 pL of a 0.2% washing powder solution peaks (1) orthophosphate, (2) NTA, (3) pyrophosphate, (4) polyphosphonate, and (5) sulfate.

Early membranes were only capable of reaching pressures of 600 kPa, but modern filters such as the Statofrac filter manufactured by Krupp [17] can be used at pressures up to 3000 kPa. As a result, the quality of stearins that can be obtained from dry fractionation coupled with membrane filtration is comparable with the quality of those obtained from solvent fractionation, and, as might be expected, the yield of olein is markedly increased over vacuum or detergent separation. 

C ()-Ci4 LAS determination in pesticide formulations C10-C13 LAS determination in detergents separation by alkyl chain length and point of attachment... 

In detergency, for separation of an oily soil O from a solid fabric S just to occur in an aqueous surfactant solution W, the desired condition is 730 = 7wo+7sw. Use simple empirical surface tension relationships to infer whether the above condition might be met if (a) 73 = 7w. (6) 70 = 7W, or (c) 73 = 70. 

Ion Flotation and Foam Separation. Ions and dissolved surfactant molecules can be removed from solutions by the agency of foam. In this case ions are sandwiched in foam films. The scientific basis of these processes is weU understood and successes of metal ion recovery from solutions including U, Pt, Au, as weU as different surfactants (detergents) have been reported in the Hterature. 

Vista, Huntsman, and other linear alkylben2ene (LAB) producers feed chlorinated paraffins to an alkylation reactor to produce detergent alkylate without prior separation of the unreacted paraffins. Large amounts of paraffins must be recycled in these processes. 

ZeoHte-based materials are extremely versatile uses include detergent manufacture, ion-exchange resins (ie, water softeners), catalytic appHcations in the petroleum industry, separation processes (ie, molecular sieves), and as an adsorbent for water, carbon dioxide, mercaptans, and hydrogen sulfide. 

---