IRChNUT
Електронний архів Національного університету "Чернігівська політехніка"
Вплив тиску на питому продуктивність ультрафільтраційних целюлозних мембран
ISSN 2415-363X
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| dc.contributor.author | Мовчанюк, О. М.
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| dc.contributor.author | Гомеля, М. Д.
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| dc.date.accessioned | 2021-10-30T12:39:09Z | |
| dc.date.available | 2021-10-30T12:39:09Z | |
| dc.date.issued | 2021 | |
| dc.identifier.uri | http://ir.stu.cn.ua/123456789/24160 | |
| dc.description | Мовчанюк, О. М. Вплив тиску на питому продуктивність ультрафільтраційних целюлозних мембран / О. М. Мовчанюк, М. Д. Гомеля // Технічні науки та технології. – 2021. – № 2(24). – С. 151-158. | en_US |
| dc.description.abstract | У роботі представлено розроблений авторами новий целюлозний ультрафільтраційний матеріал, ефективність якого була доведена під час очищення води від гуматів. Вивчено вплив постійного тиску на продуктивність нових мембран під час фільтрування дистильованої води. За тиску 0,2‒1,0 МПа досліджено три варіанти композиції мембран. Побудовано експериментальні залежності швидкості трансмембранного потоку від загального часу фільтрування. Отримано математичні моделі, адекватність яких підтверджено. Встановлено, що питома продуктивність суттєво залежить від композиції мембрани і значення тиску. Максимальну продуктивність 235 дм3/(м2·год) на сталому режимі роботи досягнуто при величині тиску 1 МПа. | en_US |
| dc.language.iso | uk | en_US |
| dc.publisher | Чернігів : НУ «Чернігівська політехніка» | en_US |
| dc.relation.ispartofseries | Технічні науки та технології;№2(24) | |
| dc.subject | целюлозна мембрана | en_US |
| dc.subject | дистильована вода | en_US |
| dc.subject | ультрафільтрація | en_US |
| dc.subject | тиск | en_US |
| dc.subject | усадка | en_US |
| dc.subject | продуктивність | en_US |
| dc.subject | cellulose membrane | en_US |
| dc.subject | distilled water | en_US |
| dc.subject | ultrafiltration | en_US |
| dc.subject | pressure | en_US |
| dc.subject | shrinking | en_US |
| dc.subject | structure | en_US |
| dc.subject | specific productivity | en_US |
| dc.title | Вплив тиску на питому продуктивність ультрафільтраційних целюлозних мембран | en_US |
| dc.title.alternative | Effect of pressure on specific performance of ultrafiltration cellulose membranes | en_US |
| dc.type | Article | en_US |
| dc.description.abstractalt1 | The efficiency of any ultrafiltration plant, so widely used today for water purification around the world, largely depends on the type of membranes and the mode of their operation. Polymeric ultrafiltration membranes are exposed to high pressures during operation, as a result of which their permeability is reduced. In addition, the solvent interacts with the membrane material. The operation of the membranes is investigated to predict the decrease in membrane performance during operation and to ensure maximum performance. The authors developed a new cellulosic ultrafiltration material, the effectiveness of which was previously proven during the purification of water from humates. Studies have shown that both the selectivity and performance of new membranes depend significantly on the operating pressure. The efficiency of the membranes is affected not only by the pressure and shrinkage of the membrane under the action of pressure, but also by the contamination of the membrane pores with molecules of the retained substance. Therefore, there is a need to study the effect of pressure on the performance of cellulose membranes when filtering pure solvent, which will assess the degree of change in the structure of the membrane under pressure and further ensure optimal parameters of the ultrafiltration unit. The aim of the work is to study the effect of pressure on the performance of new membranes during the filtration of distilled water to be able to select the optimal parameters of the ultrafiltration unit with transit flow. Three variants of the composition of cellulose membranes weighing 80 g / m2 were manufactured and investigated. Coniferous bleached sulphate cellulose and a hydrophobic mixture were used to make the membranes. The study was performed at a constant operating pressure (from 0.2 to 1.0 MPa, in increments of 0.2 MPa). Filtering continued until steady state. Based on the obtained results, experimental dependences of the transmembrane flow rate on the total filtration time were constructed. It is established that there is a decrease in the rate of transmembrane flow over time. There are three periods of operation of the membranes: the largest and slowest reduction of speed, as well as a constant period of operation, when the speed does not change. Approximation of experimental dependences is performed. Adequate mathematical models of the dependence of the specific productivity on the total ultrafiltration time are obtained. Therefore, the change in the specific productivity of the ultrafiltration process, which occurs under the action of constant pressure, significantly depends on the composition of the membrane and the value of the working pressure. The maximum productivity (0.235 m3 / (m2 · h)) after entering the steady state operation was achieved at a pressure of 1 MPa for membranes, during the manufacture of which the consumption of the hydrophobic mixture LPMS was 10%. | en_US |
