Analysis of Boron Removal for Reverse Osmosis, Ion Exchange, and Capacitive Deionization
Objectives:This article provides a comparative analysis of boron removal for brackish water reverse osmosis (BWRO), boron selective ion exchange (IX), or capacitive deionization (CDI) processes. Permeate of 1st-Pass RO process has to be post-treated for additional boron removal. Hence, we experiment...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Korean Society of Environmental Engineers
2021-10-01
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| Series: | 대한환경공학회지 |
| Subjects: | |
| Online Access: | https://www.jksee.or.kr/journal/view.php?number=4362 |
| _version_ | 1818837328125231104 |
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| author | Yu Chang Kim Sungil Lim Bangwoo Han Sang Bok Kim Inyong Park Gunhee Lee Dae Hoon Park Keejung Hong |
| author_facet | Yu Chang Kim Sungil Lim Bangwoo Han Sang Bok Kim Inyong Park Gunhee Lee Dae Hoon Park Keejung Hong |
| author_sort | Yu Chang Kim |
| collection | DOAJ |
| description | Objectives:This article provides a comparative analysis of boron removal for brackish water reverse osmosis (BWRO), boron selective ion exchange (IX), or capacitive deionization (CDI) processes. Permeate of 1st-Pass RO process has to be post-treated for additional boron removal. Hence, we experimentally analyzed the performance of boron removal and specific energy consumption (SEC) of three aforementioned processes and investigated whether the processes are suitable for 2nd pass process of RO desalination.
Methods:Raw feed water was prepared using NaCl and B(OH)3. Semi-pilot scale RO and IX systems (over 1 m3/hr capacity) and bench scale CDI system (over 2.5 L/min) were tested for performance comparison. Boron concentration was measured using Azomethine-H method for feed and product water. Energy consumption was monitored by using power quality analyzer.
Results and Discussion:Each process has its own operating conditions. The RO process required high pH of feed water for high boron removal rate, the IX process was operated below breakthrough point considering adsorption capacity of boron selective resin, and the CDI process didn’t remove boron because chloride ion has higher ion selectivity for carbon electrode than boron. In terms of SEC, the pressure-driven RO process showed the highest SEC among three processes. The CDI process based on electrical adsorption of carbon electrode showed a considerable energy consumption as well. On the other hand, the IX process was operated at low energy consumption because its removal is just based on adsorption-desorption mechanism.
Conclusions:The RO and CDI processes have received a lot of attention as leading and emerging technology while the IX process was regarded as a stubborn process because of regeneration of resin and its several segmentalized steps. However, we found that the IX process has a better performance for boron removal and energy consumption. |
| first_indexed | 2024-12-19T03:20:45Z |
| format | Article |
| id | doaj.art-8d5ee155ca43416b94b948eeb4a2dec7 |
| institution | Directory Open Access Journal |
| issn | 1225-5025 2383-7810 |
| language | English |
| last_indexed | 2024-12-19T03:20:45Z |
| publishDate | 2021-10-01 |
| publisher | Korean Society of Environmental Engineers |
| record_format | Article |
| series | 대한환경공학회지 |
| spelling | doaj.art-8d5ee155ca43416b94b948eeb4a2dec72022-12-21T20:37:47ZengKorean Society of Environmental Engineers대한환경공학회지1225-50252383-78102021-10-014310654663https://doi.org/10.4491/KSEE.2021.43.10.654Analysis of Boron Removal for Reverse Osmosis, Ion Exchange, and Capacitive DeionizationYu Chang Kim0https://orcid.org/0000-0002-7527-0051Sungil Lim1https://orcid.org/0000-0002-9253-3693Bangwoo Han2https://orcid.org/0000-0001-5780-290XSang Bok Kim3https://orcid.org/0000-0002-6880-2662Inyong Park4https://orcid.org/0000-0003-3464-3250Gunhee Lee5https://orcid.org/0000-0003-3800-2346Dae Hoon Park6https://orcid.org/0000-0002-5886-3330Keejung Hong7https://orcid.org/0000-0002-3405-8767Korea Institute of Machinery and Materials, Department of Environmental Machinery, Republic of KoreaKorea Institute of Machinery and Materials, Department of Environmental Machinery, Republic of KoreaKorea Institute of Machinery and Materials, Department of Environmental Machinery, Republic of KoreaKorea Institute of Machinery and Materials, Department of Environmental Machinery, Republic of KoreaKorea Institute of Machinery and Materials, Department of Environmental Machinery, Republic of KoreaKorea Institute of Machinery and Materials, Department of Environmental Machinery, Republic of KoreaKorea Institute of Machinery and Materials, Department of Environmental Machinery, Republic of KoreaKorea Institute of Machinery and Materials, Department of Environmental Machinery, Republic of KoreaObjectives:This article provides a comparative analysis of boron removal for brackish water reverse osmosis (BWRO), boron selective ion exchange (IX), or capacitive deionization (CDI) processes. Permeate of 1st-Pass RO process has to be post-treated for additional boron removal. Hence, we experimentally analyzed the performance of boron removal and specific energy consumption (SEC) of three aforementioned processes and investigated whether the processes are suitable for 2nd pass process of RO desalination. Methods:Raw feed water was prepared using NaCl and B(OH)3. Semi-pilot scale RO and IX systems (over 1 m3/hr capacity) and bench scale CDI system (over 2.5 L/min) were tested for performance comparison. Boron concentration was measured using Azomethine-H method for feed and product water. Energy consumption was monitored by using power quality analyzer. Results and Discussion:Each process has its own operating conditions. The RO process required high pH of feed water for high boron removal rate, the IX process was operated below breakthrough point considering adsorption capacity of boron selective resin, and the CDI process didn’t remove boron because chloride ion has higher ion selectivity for carbon electrode than boron. In terms of SEC, the pressure-driven RO process showed the highest SEC among three processes. The CDI process based on electrical adsorption of carbon electrode showed a considerable energy consumption as well. On the other hand, the IX process was operated at low energy consumption because its removal is just based on adsorption-desorption mechanism. Conclusions:The RO and CDI processes have received a lot of attention as leading and emerging technology while the IX process was regarded as a stubborn process because of regeneration of resin and its several segmentalized steps. However, we found that the IX process has a better performance for boron removal and energy consumption.https://www.jksee.or.kr/journal/view.php?number=4362boron removaldesalinationreverse osmosision exchangecapacitive deionization |
| spellingShingle | Yu Chang Kim Sungil Lim Bangwoo Han Sang Bok Kim Inyong Park Gunhee Lee Dae Hoon Park Keejung Hong Analysis of Boron Removal for Reverse Osmosis, Ion Exchange, and Capacitive Deionization 대한환경공학회지 boron removal desalination reverse osmosis ion exchange capacitive deionization |
| title | Analysis of Boron Removal for Reverse Osmosis, Ion Exchange, and Capacitive Deionization |
| title_full | Analysis of Boron Removal for Reverse Osmosis, Ion Exchange, and Capacitive Deionization |
| title_fullStr | Analysis of Boron Removal for Reverse Osmosis, Ion Exchange, and Capacitive Deionization |
| title_full_unstemmed | Analysis of Boron Removal for Reverse Osmosis, Ion Exchange, and Capacitive Deionization |
| title_short | Analysis of Boron Removal for Reverse Osmosis, Ion Exchange, and Capacitive Deionization |
| title_sort | analysis of boron removal for reverse osmosis ion exchange and capacitive deionization |
| topic | boron removal desalination reverse osmosis ion exchange capacitive deionization |
| url | https://www.jksee.or.kr/journal/view.php?number=4362 |
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