mgssuvestВестник МГСУVestnik MGSU1997-09352304-6600Moscow State University of Civil Engineering (National Research University) (MGSU)10.22227/1997-0935.2024.8.1356-1364mgssuvest-342Research ArticleИнженерные системы в строительствеEngineering systems in constructionРазделение водонефтяных эмульсий на поверхностно-модифицированных капиллярных ультрафильтрационных мембранахOil-water emulsion separation on surface-modified capillary ultrafiltration membranesИльиныхА. С.IlyinykhA. S.

Александр Сергеевич Ильиных — ассистент, Институт строительства и архитектуры

620002, г. Екатеринбург, ул. Мира, д. 19

Scopus: 57194202027

Alexander S. Ilyinykh — assistant, Institute of Construction and Architecture

19 Mira st., Ekaterinburg, 620002

Scopus: 57194202027

as_ilinykh@mail.ruМигалатийЕ. В.MigalatiyE. V.

Евгений Васильевич Мигалатий — доктор технических наук, профессор, заведующий кафедрой водного хозяйства и технологии воды, Институт строительства и архитектуры

620002, г. Екатеринбург, ул. Мира, д. 19

Scopus: 57205164456

Evgeny V. Migalatiy — Doctor of Technical Sciences, Professor, Head of the Department of Water Management and Water Technology, Institute of Construction and Architecture

19 Mira st., Ekaterinburg, 620002

Scopus: 57205164456

e.v.migalatiy@urfu.ruКорнеевА. В.KorneevA. V.

Александр Валерьевич Корнеев — магистрант, кафедра водного хозяйства и технологии воды, Институт строительства и архитектуры

620002, г. Екатеринбург, ул. Мира, д. 19

Alexander V. Korneev — master’s student, Department of Water Management and Water Technology, Institute of Construction and Architecture

19 Mira st., Ekaterinburg, 620002

korneev1998@gmail.comУральский федеральный университет имени первого Президента России Б.Н. Ельцина (УрФУ)РоссияUral Federal University named after the First President of Russia B.N. Yeltsin (UrFU)Russian FederationУральский федеральный университет имени первого Президента России Б.Н. Ельцина (УрФУ)Russian FederationUral Federal University named after the First President of Russia B.N. Yeltsin (UrFU)Russian Federation20243008202419813561364Copyright © Ильиных А.С., Мигалатий Е.В., Корнеев А.В., 20242024Ильиных А.С., Мигалатий Е.В., Корнеев А.В.Ilyinykh A.S., Migalatiy E.V., Korneev A.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.vestnikmgsu.ru/jour/article/view/342Введение

Введение. Накопление нефтесодержащих сточных вод в окружающей среде становится все более серьезной угрозой экосистеме и здоровью человека. Исследовали модификацию ультрафильтрационной PVDF мембраны с целью создания гидрофильного слоя на ее поверхности, повышения производительности и увеличения противообрастающих свойств при очистке водонефтяных эмульсий.

Материалы и методы

Материалы и методы. Использовались половолоконные капиллярные мембраны PVDF с порами диаметром 0,1 мкм. Мембраны были подвергнуты двухступенчатой модификации, которая включала обработку таниновой кислотой и последующее окисление перманганатом калия в различных буферных растворах. Для создания модельных водонефтяных эмульсий применялись масло моторное, керосин, дистиллированная вода и додецилсульфат натрия. Все эксперименты по разделению водонефтяных эмульсий проводили при поддержании постоянного давления фильтрации 1 бар на приготовленной фильтровальной ячейке в тупиковом режиме. Приготовленные модельные растворы выполнены с применением додецилсульфата натрия и содержали загрязняющие вещества — моторное масло или керосин. Фильтрат после мембраны отбирали для определения проницаемости и эффективности разделения растворов. Модификация поверхности оказала положительное влияние на эффективность задержания нефтепродуктов. При разделении эмульсии моторного масла эффективность достигала 99 %, содержание нефтепродуктов во всех пробах фильтрата было ниже 0,4 мг/л. В случае с разделением эмульсии керосина наблюдали незначительное снижение эффективности очистки до 95 %, содержание нефтепродуктов — ниже 1,15 мг/л.

Результаты

Результаты. Полученные результаты показали значительное увеличение производительности и эффективности разделения. Удельная производительность мембраны увеличилась до 143 % при разделении моторного масла и до 67 % при разделении керосина.

Выводы

Выводы. Модифицированные мембраны продемонстрировали высокую эффективность удаления нефтепродуктов, до 99 % для моторного масла и до 98 % для керосина, также обладали высокой степенью восстановления потока (FRR) до 91 %. Данные результаты могут быть перспективными для масштабирования.

Introduction

Introduction. The accumulation of oily wastewater in the environment is becoming an increasing threat to the ecosystem and human health. The modification of ultrafiltration PVDF membrane was investigated in order to create a hydrophilic layer on its surface, to improve performance and increase antifouling properties in the purification of oil-water emulsions.

Materials and methods

Materials and methods. PVDF hollow-fibre capillary membranes with 0.1 μm diameter pores were used. The membranes were subjected to two-step modification, which included treatment with tannic acid and subsequent oxidation with potassium permanganate in various buffer solutions. Motor oil, kerosene, distilled water and sodium dodecyl sulfate were used to create model water-in-oil emulsions. All oil-water emulsion separation experiments were performed while maintaining a constant filtration pressure of 1 bar on a prepared filter cell, in dead-end mode. The prepared model solutions were made with sodium dodecyl sulfate and contained the pollutant motor oil or kerosene. The filtrate after the membrane was sampled to determine the permeability and separation efficiency of the solutions. Surface modification had a positive effect on the retention efficiency of petroleum products. In the case of motor oil emulsion separation, the efficiency reached 99 %, and the content of oil products in all filtrate samples was below 0.4 mg/l. In the case of separation of kerosene emulsion there was observed a slight decrease in the efficiency of purification up to 95 %, the content of oil products was below 1.15 mg/l.

Results

Results. The results obtained showed a significant increase in throughput and separation efficiency. The specific membrane performance increased up to 143 % for motor oil separation and up to 67 % for kerosene separation.

Conclusions

Conclusions. The modified membranes showed high petroleum product removal efficiency, up to 99 % for motor oil and up to 98 % for kerosene, also had high flux recovery rate (FRR) up to 91 %. The results obtained may be promising for scaling up.

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The authors declare that there are no conflicts of interest present.