Fiber Optic Sensor for Real-Time Sensing of Silica Scale Formation in Geothermal Water
Abstract We present a novel fiber optic sensor for real-time sensing of silica scale formation in geothermal water. The sensor is fabricated by removing the cladding of a multimode fiber to expose the core to detect the scale-formation-induced refractive index change. A simple experimental setup was...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2017-06-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-017-03530-1 |
| _version_ | 1818423169329922048 |
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| author | Takuya Okazaki Tatsuya Orii Akira Ueda Akiko Ozawa Hideki Kuramitz |
| author_facet | Takuya Okazaki Tatsuya Orii Akira Ueda Akiko Ozawa Hideki Kuramitz |
| author_sort | Takuya Okazaki |
| collection | DOAJ |
| description | Abstract We present a novel fiber optic sensor for real-time sensing of silica scale formation in geothermal water. The sensor is fabricated by removing the cladding of a multimode fiber to expose the core to detect the scale-formation-induced refractive index change. A simple experimental setup was constructed to measure the transmittance response using white light as a source and a spectroscopy detector. A field test was performed on geothermal water containing 980 mg/L dissolved silica at 93 °C in Sumikawa Geothermal Power Plant, Japan. The transmittance response of the fiber sensor decreased due to the formation of silica scale on the fiber core from geothermal water. An application of this sensor in the evaluation of scale inhibitors was demonstrated. In geothermal water containing a pH modifier, the change of transmittance response decreased with pH decrease. The effectiveness of a polyelectrolyte inhibitor in prevention of silica scale formation was easily detectable using the fiber sensor in geothermal water. |
| first_indexed | 2024-12-14T13:37:52Z |
| format | Article |
| id | doaj.art-6afa830d82a549238d5b9fb0f328dfe3 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-14T13:37:52Z |
| publishDate | 2017-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-6afa830d82a549238d5b9fb0f328dfe32022-12-21T22:59:31ZengNature PortfolioScientific Reports2045-23222017-06-01711710.1038/s41598-017-03530-1Fiber Optic Sensor for Real-Time Sensing of Silica Scale Formation in Geothermal WaterTakuya Okazaki0Tatsuya Orii1Akira Ueda2Akiko Ozawa3Hideki Kuramitz4Department of Environmental Biology and Chemistry, Graduate School of Science and Engineering for Research, University of ToyamaDepartment of Environmental Biology and Chemistry, Graduate School of Science and Engineering for Research, University of ToyamaDepartment of Environmental Biology and Chemistry, Graduate School of Science and Engineering for Research, University of ToyamaNatural Resources, Environment and Energy Engineering Division, Mitsubishi Materials Techno CorporationDepartment of Environmental Biology and Chemistry, Graduate School of Science and Engineering for Research, University of ToyamaAbstract We present a novel fiber optic sensor for real-time sensing of silica scale formation in geothermal water. The sensor is fabricated by removing the cladding of a multimode fiber to expose the core to detect the scale-formation-induced refractive index change. A simple experimental setup was constructed to measure the transmittance response using white light as a source and a spectroscopy detector. A field test was performed on geothermal water containing 980 mg/L dissolved silica at 93 °C in Sumikawa Geothermal Power Plant, Japan. The transmittance response of the fiber sensor decreased due to the formation of silica scale on the fiber core from geothermal water. An application of this sensor in the evaluation of scale inhibitors was demonstrated. In geothermal water containing a pH modifier, the change of transmittance response decreased with pH decrease. The effectiveness of a polyelectrolyte inhibitor in prevention of silica scale formation was easily detectable using the fiber sensor in geothermal water.https://doi.org/10.1038/s41598-017-03530-1 |
| spellingShingle | Takuya Okazaki Tatsuya Orii Akira Ueda Akiko Ozawa Hideki Kuramitz Fiber Optic Sensor for Real-Time Sensing of Silica Scale Formation in Geothermal Water Scientific Reports |
| title | Fiber Optic Sensor for Real-Time Sensing of Silica Scale Formation in Geothermal Water |
| title_full | Fiber Optic Sensor for Real-Time Sensing of Silica Scale Formation in Geothermal Water |
| title_fullStr | Fiber Optic Sensor for Real-Time Sensing of Silica Scale Formation in Geothermal Water |
| title_full_unstemmed | Fiber Optic Sensor for Real-Time Sensing of Silica Scale Formation in Geothermal Water |
| title_short | Fiber Optic Sensor for Real-Time Sensing of Silica Scale Formation in Geothermal Water |
| title_sort | fiber optic sensor for real time sensing of silica scale formation in geothermal water |
| url | https://doi.org/10.1038/s41598-017-03530-1 |
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