230
REGENERATION AND DISPOSAL OF SORPTION MATERIALS AFTER
WASTEWATER TREATMENT
A.M. Mamatov, Sh.P. Nurullaev, M.S. Kuzibaev, M.M. Turdimurodova,
D.B. Saidmirzaeva, I. Ruzmetov,
Tashkent Institute of Chemical technology, Jizzakh Polytechnic Institute
Abstract.
In the objectives of the Development Strategy of new Uzbekistan for
2022-2026,
it is
noted that the volume of construction and chemical materials production should be doubled, the
raw material base should be expanded by involving non-traditional non-metallic raw materials and
secondary resources, non-waste technology within the "green economy" should be developed and
introduced. Proceeding from the task set in the work methods of regeneration of composite
sorption materials (CSM) after use in wastewater treatment, synthesized based on rotor slag of
Djizakh battery plant are investigated. The recovery of CWM by thermal regeneration, which is the
treatment of the sorbent by steam or gas at 110°-400℃, is shown. High-temperature thermal
regeneration is considered to be the most intensive method of sorbate desorption.
Keywords:
Sorption material, thermal regeneration, thermal, sorbate desorption,
centrifugation, vacuum filters, regeneration cycle.
Introduction
. With the intensive development of science, technology, and industrial
enterprises, environmental protection issues in our country are becoming more and more urgent [1-
3]. Therefore, specialists, scientists, and ecologists are facing a global task, the solution to these
problems. At the same time, the problem of the separation of heavy metal ions and oil products from
industrial wastewater is still important for the development of the real economy of Uzbekistan [4-7]. On
this basis, this paper presents the results of research on establishing the suitability of using wastes of
Jizzakh battery plant rotary slag to obtain sorption material with the participation of local raw materials of
the republic. To restore the sorption properties of materials’ thermal regeneration at low temperatures,
which is the treatment of sorbent by steam or gas at a temperature of
100- 400 C. The most intensive
way of desorption sorbate is considered to be high-temperature thermal regeneration [3].
The chemical composition of CCM was determined by X-ray fluorescence spectrometer
brand UR-260 company SHIMADZU (Japan) at wavelengths λ = 200-400 nm and found that the
maximum mass loss of rotary slag occurs at t = 900-1000 ° C and amounts 49-58%. At the initial stage
up to the temperature of 250°С endothermic effect is observed, which corresponds to the area of
crystallization water extraction. At temperatures above 700°С, a stable phase of the initial material is
formed. Under these conditions, the recovery of the initial properties of FRS
Т
is observed, and, in addition,
simultaneously the formation of new ferrite structures due to joint sintering of the initial FRS with the
fertilized rotor scale.
Results and their discussion.
After completing the process of sorption of oil and petroleum
products by FRS sorbents the regeneration of sorbents was carried out by centrifugation with
fixing the values of sorption capacity for 5 cycles of using the materials and the degree of
desorption of oil and petroleum products (
oil of mark U-20 and kerosene
) which can be obtained at
desorption. The results of the experiments are presented in tables 1-3.
Table 1. Regeneration of KCM sorbents after oil sorption (U-20)
Material
Number of cycles
1 cycle
2 cycle
3 cycle
4 cycle
5 cycle
KCM with
Using NF and
paraffin
Material sorption capacity (A), g/g after regeneration
1,34
1,15
0,89
0,89
0,86
Oil desorption rate, %
96,4
97,5
93,8
90,3
90,1
231
The KCM with
the use of the
NGS and the
gossypol resins
Sorption capacity of material (A) after regeneration
1,21
1,08
0,97%
0,96
0,96
96,0%
98,5%
93,3%
91,1%
91,9%
Table 2. Regeneration of KCM sorbents after oil
sorption*
Material
Number of cycles
1 cycle
2 cycle
3 cycle
4 cycle
5 cycle
KCM with
Using NF and paraffin
Sorption capacity of material (A), g/g after regeneration
0,48
0,49
0,41
0,40
0,41
Oil desorption rate, %
97,3
95,8
91,1
90,4
90,3
KCM with
using the NSP and the
gossip resins
Sorption capacity of material (A), after regeneration
0,89
0,91
0,92
0,90
0,30
97,6
96,8
96,0
90,1
90,2
Note*:
oil from the Djarkurgan field was used.
Table 3. Regeneration of KCM sorbent after kerosene sorption.
Material
Number of cycles
1 cycle
2 cycle
3 cycle
4 cycle
5 cycle
KCM with
Using NF and
paraffin
Material sorption capacity (A), g/g after
Regeneration
0,41
0,40
0,38
0,35
0,36
Degree of kerosene desorption, %
95,8
95,2
94,7
93,6
94,1
KCM with
using the Nash and
gossip resins
Sorption capacity of material (A), after regeneration
0,59
0,61
0,60
0,58
0,59
96,3
96,7
96,2
96,0
96,3
Analysis of the considered methods, taking into account the properties of the developed
CWM allowed us to choose the following methods of regeneration:
-Thermal treatment of FRS after sorption of ТМ ions - the spent sorbent is mixed with the
prepared charge of initial RSH in the ratio (1:1) by mass, then follows roasting in a muffle furnace
at temperature 600-800 C during 1-1.5 h, which corresponds to the selected parameters of thermal
ferritization;
-After completion of the process of oil sorption and SPCM absorbed substances are
extracted by centrifugation or vacuum filters.
Conclusion.
Based on the experiments performed, it was found that the FWS KCM with the
use of RSH can be used for at least five cycles (times). In this case, the degree of desorption of
adsorbed oil and oil products is 90.1 98.5% depending on the type of substance. After regeneration,
the sorption materials retain their fine-dispersed
crumbly structure (Fig.1).
References
1.
Указ Президента Республики Узбекистан, от 28.01.2022 г. № УП-60” О стратегии
Развития Нового Узбекистана на 2022-2026 гг”. https://lex.uz ›
2.
Рубанов Ю.К. Композиционные сорбенты на основе оксидов железа для извлечения
углеводородов из водных сред. (фундаментальные исследования.-2014. – N11-8.-c.1692-
1697.
3.
Комиссареннов А.А. Сорбционные технологии. Определение свойств сорбентов:
учебно-методическое пособие, СПб: СПбГТУРП, 2015, -44стр.
4.
Коурова Н.В, Очистка сточных вод от ионов тяжелых металлов магнитными
сорбентами
[Электроный
ресурс],
электронный
научно-техни-ческий
жупнал
232
«Современные научные исследования и инновации»,М.,2016.-Режим доступа:
https:?//web.snauke.ru/issues/2015/01/42128.
5.
Heuss-Abbichler S.A, A new procedure for recovering heavy metals in industrial waste
water, WIT Transactions on ecology and the Environment,-2016-V.202.-p. 85-96.
6.
I. Ruzmatov, Sh. Nurullayev, D.B.Saidmirzayeva, et al. The sorbents with using rotor slag
and physic-chemical characteristic of the absorption. Cite as: AIP Conference Proceedings 2432,
050058 (2022);
https://doi.org/10.1063/5.0090651 Published Online:16
June 2022
7.
Нуруллаев Ш.П., Рузматов И. Саидмирзаева Д.Б. Сорбционные материа-лы с
использованием роторных шлаков и пременение их для очистки воды //Universum:
Технические науки: электрон.научн.журн.2020 № 2(71).
URL:http://7universum
.
com/ru/tech/arhive/item/8761
PAT KERATININING KOSMETIKADA QO‘LLANILISHI
Tursunova Dilnozaxon Isroiljon qizi
1
, Ziyodullayev Anvar Egamberdiyevich
2
1
Toshkentt kimyo-texnologiya instituti magistranti
dilnoza7417@mail.ru
https://orcid.org/0000-0002-4281-8383
2
Toshkentt kimyo-texnologiya instituti k.f.n dotsenti
anvar_ziyadullayev@mail.ru
https://orcid.org/0000-0001-9864-3132
Tovuq patlari parrandachilik sanoatining katta hajmli va muammoli chiqindi mahsuloti
bo'lib, asosan keratindan iborat va patlar tegishli ravishda gidrolizlangan bo'lsa, oqsil manbai
sifatida ishlatilishi mumkin hisoblanadi. Keratinning asosiy qobiliyati inson hujayrasining
korteksini jarohatlardan himoya qilishdir. Bunday omillar, masalan, issiqlik, kundalik parvarishlash
va kimyoviy moddalar bilan bog'liq. Gidrolizlangan keratinni topikal qo'llash terining
moslashuvchanligi va namlanishida sezilarli o'sishni beradi. Uning namlovchi xususiyati tufayli
keratin shampunlar va konditsionerlarga qo'shiladi, soch to'kilishini yashiradi va bunday
mahsulotlar sochni qalinlashtiruvchi vosita hisoblanadi [1]. Protein gidrolizatlari sochlarni
mukammal tiklaydi va parvarish qiladi. Bu dinamik peptidlar tuzatuvchi va konditsioner
moddalardir. Soch iplarini mustahkamlash, tolaning parchalanishini kuchaytirish va kamaytirish
kabi afzalliklarga ega. Bundan tashqari, terida sochni tiklash vositalarining bir qismi va sochlarga
ranglarni bir xilda saqlashga yordam beruvchi sifatida ishlatiladi. Tovuq patlari keratin va
aminokislotalarni o'z ichiga olganligi sababli, ularning gidrolizatlar sochni davolashda va terini
davolashda ishlatilishi mumkin. Keratinlar eng ko'p tarqalgan strukturaviy oqsildir.
1-rasm.
Keratin oqsilini patdan sintez qilish mexanizmi.
Keratinazalar turli xil sohalar, masalan, terini sochlardan tozalash uchun teri ishlab chiqarish,
o'g'itlar yoki hayvonlar uchun ozuqa moddalari qishloq xo'jaligi sanoati, oziq-ovqat sanoatida oziq-
ovqat qo'shimchalari, to'qimachilikni qayta ishlash, yuvish vositalari, biotibbiyot va farmatsevtika
