Tag Archives: Sorption

Application of chitosan and its modified derivatives for removing of heavy metal ions from industrial wastes

Application of chitosan and its modified derivatives for removing of heavy metal ions from industrial wastes
RADOMSKI* P., PIĄtKOWSKI M., BOGDAł D., JAROSIŃSKI A.

Please cite as: CHEMIK 2014, 68, 1, 39–46

This paper presents the results of elimination of selected heavy metal ions from model industrial wastes with the use of sorption methods. The comparison of sorption properties of chitosan as well as its modified derivative in the form of chitosan/ aspartic acid copolymer cross-linked with ethylene glycol synthesized under microwave radiation was a main scope of the research. Moreover, synthesis parameters and preparation method of previously mentioned copolymer are presented. The sorption process was carried out in a static way at room temperature in solutions containing separate metal ions such as Fe2+/3+, Zn2+, Hg2+ and Pb2+ during 12 hours and 168 hours. After 24 hours for chitosan and 70 hours for modified derivative almost complete elimination rate of mercury and lead ions from solution...

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Sorption of heavy metal complexes with MGDA on the macroporous anion exchanger Purolite A830

Sorption of heavy metal complexes with MGDA on the macroporous anion exchanger Purolite A830 Justyna JACHUŁA, Zbigniew HUBICKI ? Department of Inorganic Chemistry, Maria Curie-Skłodowska University, Lublin, Poland Please cite as: CHEMIK 2013, 67, 8, 693?700 Abstract: The aim of the paper is to present the research on sorption of heavy metals Cu(II), Zn(II), Cd(II) and Pb(II) with methylglycinediacetic acid (MGDA) on the weakly, basic, - acrylic anion exchanger Purolite A830. Sorption depends on such factors as: chase contact time, pH, concentration, temperature and the presence of other ions. The obtained data are the basis for kinetic and equilibrium analyses. The FT-IR spectra and AFM Picture for the anion exchanger Purolite A830 before and after the sorption of Zn(II)-MGDA complexes are very helpful for explanation. Keywords: Purolite A830, heavy metals, chelating agents, sorption, MGDA   Introduction Compounds of heavy metals, particularly of lead, zinc and cadmium as well as copper, arsenic and chromium are noxious substances getting into the environment [1]. These metals and their combinations can be one of the most dangerous forms of...
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Removal of NI(II) ion in the presence of DS form waters and waste waters

Removal of NI(II) ion in the presence of DS form waters and waste waters GĘCA M., HUBICKI Z Please cite as: CHEMIK 2012, 66, 12, 1352-1359 The paper presents the studies of sorption of the Ni(II) ions complexes with tetrasodium salt of polyaspartic acid (Baypure DS 100) as a complexing agent on the ion exchangers Lewatit MonoPlus M800 and Lewatit MK-51. The sorption process was carried out by the static method depending on the phase contact time, pH, temperature and concentration of Ni(II) ions and DS in the solution. The maximal percentage of Ni(II)-DS=1:1 complexes is obtained for the above mentioned ions at pH>7.0. The temperature increase causes insignificant decrease in sorption effectiveness on all ion exchangers. Removal of nickel(II) ions in the presence of the ion exchanger Lewatit MK-51. Keywords: nikel, sorption, ion exchange, ion exchangers Read more: pdf-icon...
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Sorption of Zn(II) ions in the presence of methylglycinediacetic acid (MGDA) on the anion exchangers of various basicity degree

Sorption of Zn(II) ions in the presence of methylglycinediacetic acid (MGDA) on the anion exchangers of various basicity degree JACHUŁA J., HUBICKI Z. Please cite as: CHEMIK 2012, 66, 6, 595-600 The paper presents the results of the studies of the mechanism of Zn(II) ions sorption from aqueous solutions in the presence of methylglycinediacetic acid (MGDA) as a complexing agent. The anion exchangers of Lewatit type of various basicity degrees: strongly basic Lewatit MonoPlus M 500, average basic Lewatit MonoPlus MP 64 and weakly basic Lewatit MonoPlus MP 62 were applied. The kinetic parameters of Zn(II)-MGDA complexes sorption were calculated by means of the static method. There were also determined maxima sorption capacities from the Langmuir linear dependence. The FT-IR spectra of the anion exchanger Lewatit MonoPlus M 500 were registered before and after the sorption of Zn(II)-MGDA complexes. Keywords: Anion exchangers, Heavy metals, Chelating agents, Sorption, MGDA Read more: pdf-icon...
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