Research Papers by Maria Tomaszewska

The concentration of solutions containing KCl and H2SO4 in the MD membrane reactor results in the formation and precipitation of KHSO4 in the feed tank (REACTOR) whereas HCl is transferred through the membrane and pure diluted hydrochloric acid is obtained on the permeate side. The continuous remova

Studies on the encapsulation of the commercial granular fertilizer, NPK 6-20-30, with polysulfone (PSF) as a coating were performed. In order to improve the properties of coatings, the granules of previously coated fertilizer (wet method) were sprayed with a polymer solution or pure solvent (N,N dim

The membrane distillation (MD) process for the treatment of wastewater from ion-exchanger regeneration was proposed. The precipitation of salt deposits on the membrane surface was observed when such wastewater was directly used as a feed. A rapid decline of the permeate flux from 532 to 410 dm3/m2d

Studies on the possibility of using of polysulfone as a coating for water soluble NPK granular fertilizer were performed. The coatings were formed from the polymer solutions by the phase inversion technique. The polymer concentration in the coating forming solution was 18 wt.%. As the polysulfone co

Studies were performed to determine the effect of the presence of powdered activated carbon (PAC) on ultrafiltration (UF) process performance. The influence of PAC addition to the feed on permeate flux in terms of flux decline and the possibilities of membrane cleaning during backwashing were invest

Investigations on the preparation of controlled-release fertilizer coated with polymers, have been described. The polymer materials used were polysulfone (PSF), cellulose acetate (CA) and polyacrylonitrile (PAN). The polymer coatings were formed on the granular NPK fertilizer by the phase inversion