Ammonium carbonates are a group of fertilizer materials that include ammonium bicarbonate, carbonate hydrate, and carbamate. They can be synthesized from diverse nutrient-bearing liquid waste streams but unstable in moist environment. While extensively utilized several decades ago, their use gradually decreased favor large-scale, facility-synthesized urea fertilizers. The emergence sustainable ...

The paper describes cementation as a suitable method applied in the refining of EAFD leachates order to obtain required purity ZnO for specific industrial application. For study conditions, leachate from alkaline leaching with (NH4)2CO3 was used. contained high amount zinc (8000–12,000 µg/mL) and low content impurities such iron, lead, copper, chromium manganese range 1–21 µg/mL. Cementation co...

For the granulation of nitrate-sulfate-carbonate melt, prilling method is applied using a tower. The composition and properties new types fertilizers were studied. It shown that with ratio NH 4 NO 3 : СаСО (NH ) 2 SO = 100: 24: 1 product contains 28,03% - N, 0,50% , 10% СаО has granule strength 6.03 MPa, which much higher than pure granules (1.32 MPa). absorption AN 4.82 g. With an increase in ...

The lipolytic activities of 300 Streptomyces isolates were determined in Tributyrin and Rhodamine-B Agar. Lipase activities were also measured with p-nitrophenyl palmitate (p-NPP) as a substrate. The strain of Streptomyces bambergiensis OC 25-4 used in this study was selected among 300 strains of Streptomyces from MUCC as the best lipase producer. The incubation conditions were optimized and th...

The behavior of WO3 photoanodes has been investigated in contact with a combination of four anions (Cl , CH3SO3 , HSO4 , and ClO4 ) and three solvents (water, acetonitrile, and propylene carbonate), to elucidate the role of the semiconductor surface, the electrolyte, and redox kinetics on the current density vs. potential properties of n-type WO3. In 1.0 M aqueous strong acids, although the fla...