Instytut Nawozow Sztucznych

Puławy, Poland

Instytut Nawozow Sztucznych

Puławy, Poland

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Korzeniowska J.,Zakladzie Herbologii i Technik Uprawy Roli | Stanislawska-Glubiak E.,Zakladzie Herbologii i Technik Uprawy Roli | Hoffmann J.,Wroclaw University of Technology | Igras J.,Instytut Nawozow Sztucznych
Przemysl Chemiczny | Year: 2012

Fine and coarse phosphate rocks were compounded with elementary S and used as fertilizers In pot cultures of oat, mustard, maize, lupine and rye for 2 years. An Increased crop (15-142%) was achieved after addn. of the mixed fertilizers in the 2nd year of the study esp. at higher phosphate-S mass ratio (14:1 or 10:1). An Increase of P content In the plant tissues (up to 20%) was also detd. The most positive effect was obsd. for lupine, the most negative for mustard.


Phosphate P content in the title river water was detd. in 2006-2009 to study the impact of agriculture and mainly of municipal wastewater on the water pollution. The data were tabulated. The storage reservoir at Zemborzyce contributed to decrease in phosphate P content in the Bystrzyca river water.


Skowron P.,University Przyrodniczy w Lublinie | Igras J.,Instytut Nawozow Sztucznych
Przemysl Chemiczny | Year: 2012

Water samples were taken from Bystrzyca River and its tributaries (26 points) each month from May 2006 to May 2009 and analyzed for quality (contents of nitrate and ammonia N). Addnl. results of anal, of wastewater samples taken in 2006-2009 from the Bystrzyca river catchment before and behind of 10 municipal and district wastewater treatment plants and analyzed for BOD and contents of N and P were taken into consideration. Water pollution was connected rather with sewage release than with the fertilizing in agriculture.


Aq. solns, of NH 4NO3 (conc. 40-98% by mass) were heated up to boiling for 10 h optionally in presence of (NH4) 2SO4, Ca(NO3)2 and Mg(NO 3)2 to follow the decompn. of NH4NO3 The decompn. was accelerated in presence of HNO3 and inhibited in presence of NH3 The addn. of (NH4)2SO 4, Ca(NO3)2 and Mg(NO3)2 resulted in a small decrease in NH4NO3 decompn. rate.


Cichy B.,Instytut Nawozow Sztucznych | Jaroszek H.,Instytut Nawozow Sztucznych
Przemysl Chemiczny | Year: 2013

A review, with 65 refs., of methods for utilization of phosphogypsum waste in agriculture, chem. and building industries, road construction and environmental production.


Biskupski A.,Instytut Nawozow Sztucznych | Myka A.,Instytut Nawozow Sztucznych | Borowik M.,Instytut Nawozow Sztucznych | Malinowski P.,Instytut Nawozow Sztucznych
Przemysl Chemiczny | Year: 2013

Dolomites, magnesite and anhydrite were added to NH4NO 3 to decrease its reactivity during heating up to 1000°C under DTA and TG conditions. Addn. of dolomites resulted in the highest decrease of NH4JO3 reactivity, while the addn. of anhydrite accelerated the decmpn. of NH4NO3.


Bleached and cold-pressed rapeseed oil was hydrogenated on a fine-grained Ni catalyst. The hydrogenation rate was increased by the oil refinement on various sorbents prior hydrogenation. Compn. of the fatty acids in the hydrogenated oil samples was detd.


Cu was electrochem. removed from an aq. soln. of CuSO4 (1.0 g Cu2+/L) in a cell with 6 bulk cathodes made of graphite cubes 10×10×10 mm, graphite rollers diam. 5 mm, height 5 mm and irregular coke chunks 3-5 mm in size. The final concn. was decreased down to 1-3 mg Cu2+/L when coke chunks were used as the cathode. A new concept of using removable cathodes shell decrease the Cu concn. down to below 0.2 mg Cu2+/L.


Inger M.,Instytut Nawozow Sztucznych | Wilk M.,Instytut Nawozow Sztucznych | Parres-Esclapez S.,University of Alicante | Illan-Gomez M.J.,University of Alicante | And 2 more authors.
Journal of Chemical Technology and Biotechnology | Year: 2013

Background: N2O is a powerful greenhouse gas emitted in nitric acid plants, and emission control technologies are required. Results: A 0.25%Rh/50%Ce0.9Pr0.1O2/γ-Al2O3 catalyst has been prepared and tested for N2O decomposition in a real nitric acid plant gas stream. The catalyst is active enough to achieve 100% N2O removal, maintaining a constant catalytic activity after 40h operation without deactivating. Characterization of the fresh and used catalyst, using different techniques, revealed no changes during the N2O decomposition experiments: (i) XRD and Raman spectroscopy show the fluorite structure of the Ce-Pr mixed oxide before and after the catalytic tests, (ii) the crystal size of the Ce-Pr mixed oxide particles and the BET surface area of the catalyst is maintained, evidencing no sintering of ceria particles, (iii) H2-TPR indicates that the reducibility of the catalyst is similar before and after the catalytic tests, revealing chemical stability, and (iv) TEM and XPS analysis indicated the high stability of the rhodium particle size and oxidation state. Conclusion: An active and stable catalyst with formulation 0.25%Rh/50%Ce0.9Pr0.1O2/γ-Al2O3 has been prepared and successfully tested for N2O decomposition in a real nitric acid plant gas stream. © 2013 Society of Chemical Industry.


Plsarska B.,Instytut Nawozow Sztucznych | Nowak M.,Instytut Nawozow Sztucznych
Przemysl Chemiczny | Year: 2012

Ni Ions were removed from aq. soln. of NiSO4 (1 g Ni 2+/L) in a cell with 6 cathodes made of a coke chunks 3-5 mm in size. Ni powder was pptd. even at threshold current d. A modification of perforated walls of cathodes allowed to reduce Ni powder spill from bulk cathodes. To decrease the Ni concn. to below 0.5 mg/L, use of 2 cells was necessary.

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