The current study was attributed to uranium (VI) ions adsorption using a anion exchanger resin, Dowex®2x8, in the presence of sulfate anions. Evaluation of operational parameters including contact time, pH, initial concentration of uranium ions, and presence of various anions (including phosphate, sulfate, chloride, fluoride, and nitrate) in the solution was assessed on sorption performance of ...

A separação do isótopo S foi obtida pela reação de troca isotópica en tre solução de ácido sulfuroso e ânions bissulfito adsorvidos em resinas aniônicas tipo amônio quaternário (Dowex 1X8 e Dowex 2X8, malha 100-200) acondicionadas em seis colunas de resina de troca aniônica. Cada coluna de resina possuia 130 cm de comprimento com diâmetro de 2,2 cm. As colunas foram conectadas em série du rante...

Batch hydrolysis of olive oil was performed by Candida rugosa lipase immobilized on Amberlite IRC-50 and Al2O3. These two supports were selected out of 16 carriers: inorganic materials (sand, silica gel, infusorial earth, Al2O3), inorganic salts (CaCO3, CaSO4), ion-exchange resins (Amberlite IRC-50 and IR-4B, Dowex 2X8), a natural resin (colophony), a natural biopolymer (sodium alginate), synth...

1 JOANNEUM RESEARCH, Elisabethstraße 5, 8010, Graz, Austria 2 School of Interactive Computing, Georgia Institute of Technology, 85 Fifth Street NW, Atlanta, GA, 30308 USA 3 Institute of Plant Sciences, University of Graz, Schubertstraße 51, 8010 Graz, Austria 4 TerraCarbon LLC, Dr. Eckenerstraße 21b, 8043 Graz, Austria 5 Saskatchewan Research Council, 125–15 Innovation Blvd., Saskatoon, Saskatc...

To apply the method of quantitative electron microscopy to the measurement of mass in thin sections, the thickness of the section at or very near the structure to be studied must be known. Dowex anion exchange resin AG 1 x 2, stained with phosphotungstic acid (PTA) at pH 6.4, was used as a thickness standard which could be embedded and sectioned. The sectioned PTA-Dowex appeared uniformly stain...

This communication describes a method for adsorbing the invertase (EC.3.2.1.26) on DOWEX® anion exchange resin. Among the types of DOWEX® resins studied (1x8:50-400; 1x4:50-400 and 1x2:100400), 1X4-200 was the most suitable, because it adsorbed the invertase molecules completely and the complex 1X4-200/invertase retained 100% of the catalytic activity. Moreover, no leakage of enzyme from the su...

Excessive concentrations of nitrate in ground water are known to cause human health hazards. A submerged membrane adsorption hybrid system that includes a microfilter membrane and four different adsorbents (Dowex 21K XLT ion exchange resin (Dowex), Fe-coated Dowex, amine-grafted (AG) corn cob and AG coconut copra) operated at four different fluxes was used to continuously remove nitrate. The ex...

AMP + 2 phosphocreatine -+ ATP + 2 creatine. The conversion is not prevented as a result of treatment of the kinases with charcoal and Dowex 1 (CFform) to remove nucleotides. 2. It has been confirmed that neither creatine kinase nor adenylate kinase catalyses the direct phosphorylation of AMP by phosphocreatine. 3. It appears that reaction occurs because crystalline creatine kinase contains a s...

Cr(III) is one of the most stable chromium species in nature, are not carcinogenic to humans, but if levels body exceed 0.2 mg / day it very dangerous for especially respiratory tract. The presence aquatic environment so low that difficult detect using instruments with various limitations it, therefore preconcentration techniques carried out overcome issue. In this study water sample was adjust...