Objective. The purpose of this work is to study the adsorption characteristics of a synthesized organoelement sorbent intended for the sorption of lithium from brines, based on the adsorption and desorption isotherm of nitrogen at 77.35°K. Determination of the main adsorption characteristics of sorbents such as specific surface area, monolayer capacity, specific volume, average pore width, etc. All calculations were performed based on the BET method. The specific surface area of the sorbent is determined in two ways, i.e. by mass and volume of adsorbate gas using linear forms of the BET equation. The results of the nitrogen desorption isotherm on the synthesized sorbent according to the BJH method are presented. Methods. To achieve the goal of this study, the standard method for determining the specific surface area of adsorbents was used - the BET method and pore size distribution - the BJH method. To determine the specific surface area using the multipoint BET method, it is necessary to measure the equilibrium values of the mass of the adsorbed gas (in our case, nitrogen) per unit mass of the adsorbent for at least three different relative pressures. Results. The specific surface area of the sorbent, determined in two ways i.e. by mass and volume of adsorbate gas using the BET method was 4.99 m2/g. It was determined that the main capacity of the synthesized sorbent consists of pores with a width of 9 to 20 nm. The results of desorption based on the BJH method are presented. Conclusion. The adsorption characteristics of the synthesized sorbent for the selective extraction of lithium from brines were determined, such as specific surface area, monolayer capacity, pore width, etc. The results were obtained with a nitrogen adsorption isotherm at 77.35 °K. Using the BET equations, the specific surface area of the synthesized sorbent was determined, which was 4.99 m2/g. The calculated results are compared with the results obtained by the specific surface area analyzer.
| Mualliflar | Yusupov, Muzafar, Akhmadjanov, Ibrokhim, Djalilov, Abdulakhat, Karimov, Mas’ud |
|---|---|
| Jurnal | Наманган муҳандисликтехнология институти илмийтехника журнали |
| Nashr sanasi | 2024-06-29 |
| Jild | 9 |
| Son | 2 |
| Betlar | 164-170 |
| Til | Ingliz |
| DOI | 10.61151/stjniet.v9i2.386 |
DOI: 10.61151/stjniet.v9i2.386 · Maqolaning asl sahifasi
adsorption, desorption, specific surface area, BET method, monolayer capacity, DHAL-Cl
You can increase the control token (Ib) given to the control churn and reduce the working churn voltage (Uin) and increase the load voltage (U). The variable token bridge is corrected in a semiconductor fixer with a…
Abstract The article provides a justification of the recommended values based on the analysis of the graphs of dependence of the vibration coverage and loads of the curved pile drum and the angular velocities of the…
In this study, the energy characteristics of water vapor adsorption in NaA and NaA(NaBO2) zeolites were measured by adsorption calorimetry. Information of differential heats, isotherms, entropy and kinetic of…
While modern techniques and technologies play an important role in the development of silk industry enterprises, the introduction of internationally recognized standards and management systems is an urgent issue. The…
Annotation: To ensure flow and continuity of the juice production process, industry uses continuous presses. In addition, the quality of the juices produced depends, first of all, on the quality and chemical composition…
The enterprises of the textile industry are not only the most important of the existing enterprises in Uzbekistan, but also help to develop this industry. therefore, the unsatisfactoriness of harmonization with the…
Annotation. Strictly following the specific procedures for each operation is crucial to producing top-quality soybeans. Achieving this quality necessitates on-farm quality control during post-harvest processing. To…
Abstract. Objective. The article analyzes the composition of the fountain solution, which is one of the significant components of the "ink – water" balance. Methods. An Express method was used to determine the chemical…
Abstract: It was determined that the change in the speed and temperature of the air supplied to drying significantly affects the change in the cleaning efficiency of the cotton cleaning equipment. Cotton with an initial…
Ushbu maqolada o‘quv jarayonini tashkil etish va mustaqil ta’lim olish uchun muhim bo‘lgan interaktiv multimediali elektron darsliklarni, boshqacha aytganda, algoritmlarni yaratish bosqichlari ketma-ketligi haqida…
Наманган муҳандисликтехнология институти илмийтехника журнали — barcha maqolalar