Reverse Osmosis

Specific chemical permeation through a cellulose acetate membrane has also been reported (Hindin, Bennett and Narayanan 1969). The membranes were immersed in water at 82°C for 30 min prior to use. At a pressure differential of 100 atm, a temperature of 25°C, flux rates on the order of 15 gal/sq ft/day, and feed concentrations of about 500 mg/l, reduction of lindane was 73% while DDT and TDE (DDD) were rejected above 99%. High reductions were obtained for those chemical species existing primarily in the colloidal, aggregate, micelle, or macro-molecular form. If the chemical species existed both as an aggregate in dispersion and as a discrete molecule in true solution where vapor pressure of the discrete molecule in true solution was appreciably greater than that of water, the range of reduction was 50-80%. Where discrete molecules more volatile than water were tested, range of reductions was 14-40%.

DIY Battery Repair

DIY Battery Repair

You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.

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