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Popko M.,Instytut Technologii Nieorganicznej I Nawozow Mineralnych | Borkowska-Burnecka J.,Instytut Technologii Nieorganicznej I Nawozow Mineralnych
Przemysl Chemiczny | Year: 2010

Volatile Cd, In and Pb comps. (hydrides) were synthesized by redn. of resp. salts with NaBH4 In aq. solus, in presence of surface-active agents and used for anal, purposes by using at. emission spectroscopy with inductively coupled plasma. Effect of Cu, Fe, Mn, Zn, Ca, K and Na Ions on the Cd, In and Pb signals on the spectra was also studied. The method was practically used for detn. of Pb in 3 dolomites. The Pb was preliminarily oxidized with K3Fe(CN) 6.


Kozik A.,Instytut Technologii Nieorganicznej I Nawozow Mineralnych | Matynia A.,Instytut Technologii Nieorganicznej I Nawozow Mineralnych | Hutnik N.,Instytut Technologii Nieorganicznej I Nawozow Mineralnych | Piotrowski K.,Silesian University of Technology
Przemysl Chemiczny | Year: 2013

MgNH4PO46H2O (struvite) was ciystallized from dud. phosphate(V) ions-contg. aq. solns. in a continuously operated lab. crystallizer at 298 K and pH 8.5 or 10 (residence time 900 or 3600 s), to study the effect of phosphate(V) ion concn. in a feed, molar proportions between reacting substances, pH and mean residence time of suspension In a crystallizer on the process yield, its kinetics and product quality. The best-shaped struvite crystals were produced at the phosphate(V) ion concn. 0.20% by mass, stoichiometnc proportions between the reacting substances, pH 8.5 and elongated residence time 3600 s. Excess of Mg ions resulted in improving the removal of phosphate(V) ions.


Hoffmann J.,Instytut Technologii Nieorganicznej I Nawozow Mineralnych | Gryglewicz G.,Instytut Technologii Nieorganicznej I Nawozow Mineralnych | Hoffmann K.,Instytut Technologii Nieorganicznej I Nawozow Mineralnych | Gryglewicz S.,Instytut Technologii Nieorganicznej I Nawozow Mineralnych | Rutkowski P.,Instytut Technologii Nieorganicznej I Nawozow Mineralnych
Przemysl Chemiczny | Year: 2010

Outlet gases from com. prodn. of single superphosphate (SSP) were analyzed for presence of about 20 odorous substances (org. sulfides and disulfides, Me tetrahydrothiophenes). The substances were addnl. decompd. by plasma treatment (efficiency about 50%). SSP and K salts were also added (1% and 0.4% by mass, resp.) to cattle and pig manures to limit the NH3 emission during their 14 days long storage (efficiency 31% and 28%, resp.).

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