In the processes of wastewater treatment, significant amounts of iron phosphate containing sludge is discharged. One of the recycling methods of this sludge, alkalization treatment is investigated. aq. solution of sodium hydroxide is added to the dehydrated sludge. Iron phosphate in the sludge react with sodium hydroxide, forming sodium phosphate and iron hydroxide containing-sludge at room tem...

Meta l impregnat ion , or "s ta in ing ," of tissue sections for electron microscopy has become the accepted practice in recent years. Salts of metals of h igh atomic weight such as u ran ium, chromium, thor ium, lead, or tungsten, among many tested, have been found suitable (6, 1). "Lead hydroxide ," as prepar ted by Watson (6), is now widely used, hu t this solution is extremely unstable in a...

I Siewert M, Gnekow H. Uber die Stabilitat von Glucose-Elektrolyt-Mischungen (oral rehydration salts: ORS) zur Therapeutie von Durchfallerankungen). Phartnazeutische Zeitung 1983;128: 1169-74. 2 Hoffman SL, Moechtar MA, Simajutank C, et al. Rehydration and maintenance therapy of cholera patients in Jakarta: citrate-based versus bicarbonate-based oral rehydration salt solution. J Infect Dis 1985...

The application of calorimetric principles to the determination of phosphorus is especially desirable in view of the long drawn out and laborious gravimetric method now customarily employed. The accuracy of calorimetric methods, the ease with which most calorimetric procedures are carried on and their employment where only small amounts of material are available for analysis would make a reliab...

Two processes for extracting alumina from low-grade ores are described, one applicable to both clays and high-silica bauxites, and the other only to bauxites. In the former process, a line-containing sinter is prepared and annealed by cooling it slowly through the range of 1,3000 to 1,2000 C. The annealed sinter dusts to a powder which requires no grinding. This material is extracted with a sol...