Evaluation of fouling and chemical cleaning of reverse osmosis membrane after treatment of geothermal water
In this study, high mineral scaling propensity geothermal water was treated using a FilmTech BW30-2540 reverse osmosis (RO) membrane, integrated into a mini-pilot scale membrane test unit installed at a geothermal heating center. The study was conducted in eight cycles by monitoring membrane fouling...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2025-01-01
|
| Series: | Frontiers in Membrane Science and Technology |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/frmst.2024.1408595/full |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841555119442755584 |
|---|---|
| author | Aseel Zaid Yakubu Abdullahi Jarma Islam Rashad Ahmed Senan Aslı Karaoğlu Aslı Karaoğlu Aydın Cihanoğlu Aydın Cihanoğlu Alper Baba Nalan Kabay |
| author_facet | Aseel Zaid Yakubu Abdullahi Jarma Islam Rashad Ahmed Senan Aslı Karaoğlu Aslı Karaoğlu Aydın Cihanoğlu Aydın Cihanoğlu Alper Baba Nalan Kabay |
| author_sort | Aseel Zaid |
| collection | DOAJ |
| description | In this study, high mineral scaling propensity geothermal water was treated using a FilmTech BW30-2540 reverse osmosis (RO) membrane, integrated into a mini-pilot scale membrane test unit installed at a geothermal heating center. The study was conducted in eight cycles by monitoring membrane fouling via membrane flux decline. Firstly, the geothermal water coming from the source at approximately 80°C was taken into holding tanks and allowed to reach approximately room temperature (25°C). Then, the geothermal water that reached this temperature was used in the system. The fouling degree was compared to the initial permeability of the virgin membrane. After each treatment cycle, the membrane’s permeability was evaluated both before and after acid cleaning. Permeability testing was conducted using RO permeate as the feed, under pressures ranging from 8 to 30 bar, with 2-bar increments. The geothermal water treatment was performed at a constant pressure of 15 bar, with a water recovery maintained at approximately 50%. Prior to each permeability test, the membrane underwent a 45-min wash with citric acid, followed by a rinse with RO permeate. During the first five cycles, citric acid was used at a concentration of 1000 mg/L, achieving a flux recovery of 86.6% by the fifth cycle. In the subsequent three cycles, the citric acid concentration was increased to 4000 mg/L, resulting in a flux recovery of 63.4% by the eighth cycle. The study concluded that scale formation on the membrane surface intensified as the number of cycles increased. |
| format | Article |
| id | doaj-art-ccd8c054263a4352990e528d0beceb81 |
| institution | Kabale University |
| issn | 2813-1010 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Membrane Science and Technology |
| spelling | doaj-art-ccd8c054263a4352990e528d0beceb812025-01-08T06:12:08ZengFrontiers Media S.A.Frontiers in Membrane Science and Technology2813-10102025-01-01310.3389/frmst.2024.14085951408595Evaluation of fouling and chemical cleaning of reverse osmosis membrane after treatment of geothermal waterAseel Zaid0Yakubu Abdullahi Jarma1Islam Rashad Ahmed Senan2Aslı Karaoğlu3Aslı Karaoğlu4Aydın Cihanoğlu5Aydın Cihanoğlu6Alper Baba7Nalan Kabay8Department of Chemical Engineering, Ege University, Izmir, TürkiyeDepartment of Chemical Engineering, Ege University, Izmir, TürkiyeDepartment of Chemical Engineering, Ege University, Izmir, TürkiyeDepartment of Chemical Engineering, Ege University, Izmir, TürkiyeDepartment of Environmental Sciences, Graduate School of Natural and Applied Sciences, Ege University, Izmir, TürkiyeDepartment of Chemical Engineering, Ege University, Izmir, TürkiyeDepartment of Refinery and Petrochemical Technology, Aliağa Vocational School, Ege University, Izmir, TürkiyeDepartment of International Water Resources, Izmir Institute of Technology, Urla, TürkiyeDepartment of Chemical Engineering, Ege University, Izmir, TürkiyeIn this study, high mineral scaling propensity geothermal water was treated using a FilmTech BW30-2540 reverse osmosis (RO) membrane, integrated into a mini-pilot scale membrane test unit installed at a geothermal heating center. The study was conducted in eight cycles by monitoring membrane fouling via membrane flux decline. Firstly, the geothermal water coming from the source at approximately 80°C was taken into holding tanks and allowed to reach approximately room temperature (25°C). Then, the geothermal water that reached this temperature was used in the system. The fouling degree was compared to the initial permeability of the virgin membrane. After each treatment cycle, the membrane’s permeability was evaluated both before and after acid cleaning. Permeability testing was conducted using RO permeate as the feed, under pressures ranging from 8 to 30 bar, with 2-bar increments. The geothermal water treatment was performed at a constant pressure of 15 bar, with a water recovery maintained at approximately 50%. Prior to each permeability test, the membrane underwent a 45-min wash with citric acid, followed by a rinse with RO permeate. During the first five cycles, citric acid was used at a concentration of 1000 mg/L, achieving a flux recovery of 86.6% by the fifth cycle. In the subsequent three cycles, the citric acid concentration was increased to 4000 mg/L, resulting in a flux recovery of 63.4% by the eighth cycle. The study concluded that scale formation on the membrane surface intensified as the number of cycles increased.https://www.frontiersin.org/articles/10.3389/frmst.2024.1408595/fullgeothermal watermembrane foulingreverse osmosis (RO) membranescalingchemical cleaning |
| spellingShingle | Aseel Zaid Yakubu Abdullahi Jarma Islam Rashad Ahmed Senan Aslı Karaoğlu Aslı Karaoğlu Aydın Cihanoğlu Aydın Cihanoğlu Alper Baba Nalan Kabay Evaluation of fouling and chemical cleaning of reverse osmosis membrane after treatment of geothermal water Frontiers in Membrane Science and Technology geothermal water membrane fouling reverse osmosis (RO) membrane scaling chemical cleaning |
| title | Evaluation of fouling and chemical cleaning of reverse osmosis membrane after treatment of geothermal water |
| title_full | Evaluation of fouling and chemical cleaning of reverse osmosis membrane after treatment of geothermal water |
| title_fullStr | Evaluation of fouling and chemical cleaning of reverse osmosis membrane after treatment of geothermal water |
| title_full_unstemmed | Evaluation of fouling and chemical cleaning of reverse osmosis membrane after treatment of geothermal water |
| title_short | Evaluation of fouling and chemical cleaning of reverse osmosis membrane after treatment of geothermal water |
| title_sort | evaluation of fouling and chemical cleaning of reverse osmosis membrane after treatment of geothermal water |
| topic | geothermal water membrane fouling reverse osmosis (RO) membrane scaling chemical cleaning |
| url | https://www.frontiersin.org/articles/10.3389/frmst.2024.1408595/full |
| work_keys_str_mv | AT aseelzaid evaluationoffoulingandchemicalcleaningofreverseosmosismembraneaftertreatmentofgeothermalwater AT yakubuabdullahijarma evaluationoffoulingandchemicalcleaningofreverseosmosismembraneaftertreatmentofgeothermalwater AT islamrashadahmedsenan evaluationoffoulingandchemicalcleaningofreverseosmosismembraneaftertreatmentofgeothermalwater AT aslıkaraoglu evaluationoffoulingandchemicalcleaningofreverseosmosismembraneaftertreatmentofgeothermalwater AT aslıkaraoglu evaluationoffoulingandchemicalcleaningofreverseosmosismembraneaftertreatmentofgeothermalwater AT aydıncihanoglu evaluationoffoulingandchemicalcleaningofreverseosmosismembraneaftertreatmentofgeothermalwater AT aydıncihanoglu evaluationoffoulingandchemicalcleaningofreverseosmosismembraneaftertreatmentofgeothermalwater AT alperbaba evaluationoffoulingandchemicalcleaningofreverseosmosismembraneaftertreatmentofgeothermalwater AT nalankabay evaluationoffoulingandchemicalcleaningofreverseosmosismembraneaftertreatmentofgeothermalwater |