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Zdeterminowanie. Czy człowiek (nie)zmiennym jest?

100%

Sobolewska P.

Amor Fati

2016

nr 2(6)

69-94

Some people are able to give up our addictions day by day, while others hesitate to do that for a years. Some of us could learn upon their mistakes, and others do not see the schemes governing their lives despite explicit information given. What decides on our ability to change our behavior and the way we think? This question can be considered partially answered from the research on the monovular twins – as it turns out that they are not identical, contrary to the pub-lic opinion. Considering child`s physical and mental growth we can think not only about the ge-netic influence, but also other factors, such as: foetal development, environmental and social conditions and – last but not least – their autonomous decisions made in adult life. In this paper the author analyzes all of this influences to give an answer to the former questions.

Sorption of Cr(VI) onto hdtma modified zeolitic tuffs

51%

Sobolewska P. , Chojnacka M. , Kramski D. , Warchoł J.

Ecological Chemistry and Engineering. A

2020

tom Vol. 27, nr 1-2

1--9

The removal of Cr(VI) from aqueous solutions was investigated using clinoptilolite and phillipsite-chabazite rich tuffs. These minerals were modified using hexadecyltrimethyl – ammonium bromide (HDTMA-Br) and used for Cr(VI) ions removal. The physicochemical characteristics of zeolitic minerals were revealed by XRD, XRF, BET and FT-IR techniques. The uptake capacities of modified zeolites were compared in batch sorption experiments. To predict the sorption isotherms and to determine the characteristic parameters for process design, three isotherm models the Freundlich, the Langmuir, and the Bilangmuir, were applied to experimental data. The data obtained reveal homogeneous Cr(VI) sorption on one kind of active sites on PC-HDTMA surface and heterogeneous sorption on two kinds of active sites on CL-HDTMA surface.