СЕКЦИЯ 3. «ЗОЛЬ-ГЕЛЬ ПЛЁНКИ, ПОКРЫТИЯ И МЕМБРАНЫ»
29
3.
Stancu V. et al. Effects of porosity on ferroelectric properties of Pb(Zr0.2Ti0.8)O3 films //
Thin Solid Films. 2007. V. 515. № 16. P. 6557.
Работа выполнена в РТУ МИРЭА при финансовой поддержке Минобрнауки России
(проект № 0706-2020-0022) и Российского фонда фундаментальных исследований (грант
№ 19-29-03058).
ABSORPTION PROPERTIES OF Ag+, Cu
2 +
, Zn
2 +
, Pb
2 +
IONS ON THE CHITOSAN-
BASED MEMBRANE
Abdullayev N.J.
1
,
Kodirkhonov M.R.
1
,
Ergashev O.K.
2
1
Namangan State University, 316, Uychi str,. Namangan, 160136, Uzbekistan
2
Namangan Engineering and Technological Institute, №7,Kasansay str., Namangan, 160115,
Uzbekistan,
e-mail:
anodirkhon89@mail.ru
It is known from the research work which is being carried out that in the removal of pollutants
from the composition of wastewater, adsorbents such as activated charcoal, graphene oxide, seolite are
being used at present. Graphene oxide is characterized by effective absorption properties among
absorbents. The main reasons for this: the fact that it has a high surface area, has a hydrophilic and
hydrophobic groups, has a high thermal and chemical stability. Based on this property, graphene oxide
can be used to purify wastewater from one or more toxic compounds in neutralization [1-3]. However,
the producing of this absorbent and its widely usage is limited due to the high cost of its price tag.
Therefore, it is desirable to create high-efficiency absorbents from cheap local raw materials.
Also, there is a certain difficulties in the fact that the solution environment of chitosan-based
compounds varies depending on the nature of the solvent [4]. It can also be seen that the PH 2-9 range
is limited in the chitosan samples which are being presented in this research.
Experience case and discussion.
Sorbtion properties of any material are determined primarily by its physical and chemical
properties. In the experimental work, the sorption properties of chitosan-based membranes with
different exchange levels were determined and the degree of absorption was described.
It is known that the volume of sorbent sorption is determined primarily by the presence in its
composition of functional groups and their quantity. The studied sorbents contain hydrochloride and
weak based on amino acid groups. Since the mutual deposition of chitosan is carried out by amino
groups, it leads to a decrease in the capacity of sorbents. A small amount of carboxyamide groups are
formed in relation to the amount of amino groups contained in chitosan. Therefore, additional
interdependencies may arise during the sorption. It is impossible to accurately calculate the value of
the degree of interdependence of the aboveness. As a result, a comparative assessment of the degree of
interdependence of the studied sorbent samples can be obtained using their absorption rate values.
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