Optimization of pilot-scale re-mineralization by calcite dissolution using sulfuric acid for seawater desalination processes
Desalinated water produced using reverse osmosis (RO) membranes must be re-mineralized with mono- and multi-valent ions and particles before being supplied as drinking water. Mineral dissolution of calcite is done by sending acidified desalinated water through a column bed, and it has been widely us...
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| Veröffentlicht in: | Environmental science water research & technology 2023-02, Vol.9 (2), p.62-629 |
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| creator | Lim, Sungil Kim, Yu Chang |
| description | Desalinated water produced using reverse osmosis (RO) membranes must be re-mineralized with mono- and multi-valent ions and particles before being supplied as drinking water. Mineral dissolution of calcite is done by sending acidified desalinated water through a column bed, and it has been widely used for re-mineralization of desalinated water. This work aims to optimize a pilot-scale calcite bed reactor system (10-25 ton per day) to efficiently dissolve calcite granules to supply calcium (Ca
2+
) ions. The feed water was acidified using sulfuric acid, and several operational parameters (
i.e.
, flow rate, acid dosage and bed contact volume) were manipulated for system optimization. As a result, the calcite bed system under the acidified feed at pH 4 and the empty bed contact time (EBCT) at 12.7 min exhibited the most efficient calcite dissolution with dissolved calcium ions of over 80 mg L
−1
(as CaCO
3
) and a permeate pH of over 8, conforming to drinking water standards. In addition, the production quantity increased with a higher feed flow rate and a shorter EBCT. The calcite granules used in this study mostly contained pure calcium carbonate over 99%, which prevented additional contamination of the final produced water by calcite impurities or heavy metals. Accordingly, this study will be an informative and practical reference in terms of the calcite dissolution process for RO re-mineralization.
Desalinated water produced using reverse osmosis (RO) membranes must be re-mineralized with alkali ions before being supplied as drinking water. |
| doi_str_mv | 10.1039/d2ew00768a |
| format | Article |
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2+
) ions. The feed water was acidified using sulfuric acid, and several operational parameters (
i.e.
, flow rate, acid dosage and bed contact volume) were manipulated for system optimization. As a result, the calcite bed system under the acidified feed at pH 4 and the empty bed contact time (EBCT) at 12.7 min exhibited the most efficient calcite dissolution with dissolved calcium ions of over 80 mg L
−1
(as CaCO
3
) and a permeate pH of over 8, conforming to drinking water standards. In addition, the production quantity increased with a higher feed flow rate and a shorter EBCT. The calcite granules used in this study mostly contained pure calcium carbonate over 99%, which prevented additional contamination of the final produced water by calcite impurities or heavy metals. Accordingly, this study will be an informative and practical reference in terms of the calcite dissolution process for RO re-mineralization.
Desalinated water produced using reverse osmosis (RO) membranes must be re-mineralized with alkali ions before being supplied as drinking water.</description><identifier>ISSN: 2053-1400</identifier><identifier>EISSN: 2053-1419</identifier><identifier>DOI: 10.1039/d2ew00768a</identifier><language>eng</language><publisher>Cambridge: Royal Society of Chemistry</publisher><subject>Acidification ; Calcite ; Calcite dissolution ; Calcium ; Calcium carbonate ; Calcium carbonates ; Calcium ions ; Carbonates ; Contamination ; Desalination ; Dissolution ; Dissolving ; Drinking water ; Feeds ; Flow rates ; Flow velocity ; Granular materials ; Heavy metals ; Impurities ; Ions ; Membranes ; Metals ; Mineralization ; Optimization ; Reverse osmosis ; Seawater ; Sulfuric acid ; Sulphuric acid ; Wastewater ; Water desalting ; Water quality ; Water quality standards</subject><ispartof>Environmental science water research & technology, 2023-02, Vol.9 (2), p.62-629</ispartof><rights>Copyright Royal Society of Chemistry 2023</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c281t-bccacb9c0c94dd75a7a07fc0428f67a6fda9efc0df422c6c3363376cf29f926d3</citedby><cites>FETCH-LOGICAL-c281t-bccacb9c0c94dd75a7a07fc0428f67a6fda9efc0df422c6c3363376cf29f926d3</cites><orcidid>0000-0002-9253-3693</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Lim, Sungil</creatorcontrib><creatorcontrib>Kim, Yu Chang</creatorcontrib><title>Optimization of pilot-scale re-mineralization by calcite dissolution using sulfuric acid for seawater desalination processes</title><title>Environmental science water research & technology</title><description>Desalinated water produced using reverse osmosis (RO) membranes must be re-mineralized with mono- and multi-valent ions and particles before being supplied as drinking water. Mineral dissolution of calcite is done by sending acidified desalinated water through a column bed, and it has been widely used for re-mineralization of desalinated water. This work aims to optimize a pilot-scale calcite bed reactor system (10-25 ton per day) to efficiently dissolve calcite granules to supply calcium (Ca
2+
) ions. The feed water was acidified using sulfuric acid, and several operational parameters (
i.e.
, flow rate, acid dosage and bed contact volume) were manipulated for system optimization. As a result, the calcite bed system under the acidified feed at pH 4 and the empty bed contact time (EBCT) at 12.7 min exhibited the most efficient calcite dissolution with dissolved calcium ions of over 80 mg L
−1
(as CaCO
3
) and a permeate pH of over 8, conforming to drinking water standards. In addition, the production quantity increased with a higher feed flow rate and a shorter EBCT. The calcite granules used in this study mostly contained pure calcium carbonate over 99%, which prevented additional contamination of the final produced water by calcite impurities or heavy metals. Accordingly, this study will be an informative and practical reference in terms of the calcite dissolution process for RO re-mineralization.
Desalinated water produced using reverse osmosis (RO) membranes must be re-mineralized with alkali ions before being supplied as drinking water.</description><subject>Acidification</subject><subject>Calcite</subject><subject>Calcite dissolution</subject><subject>Calcium</subject><subject>Calcium carbonate</subject><subject>Calcium carbonates</subject><subject>Calcium ions</subject><subject>Carbonates</subject><subject>Contamination</subject><subject>Desalination</subject><subject>Dissolution</subject><subject>Dissolving</subject><subject>Drinking water</subject><subject>Feeds</subject><subject>Flow rates</subject><subject>Flow velocity</subject><subject>Granular materials</subject><subject>Heavy metals</subject><subject>Impurities</subject><subject>Ions</subject><subject>Membranes</subject><subject>Metals</subject><subject>Mineralization</subject><subject>Optimization</subject><subject>Reverse osmosis</subject><subject>Seawater</subject><subject>Sulfuric acid</subject><subject>Sulphuric acid</subject><subject>Wastewater</subject><subject>Water desalting</subject><subject>Water quality</subject><subject>Water quality standards</subject><issn>2053-1400</issn><issn>2053-1419</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNpFkUtLw0AUhYMoWGo37oUBd0J0HulMsiy1PqDQjeIyTO_MyJQ0iXMTSsUf79hoXd3XxzlwbpJcMnrLqCjuDLc7SpXM9Uky4nQqUpax4vTYU3qeTBA3lFImRTyJUfK1aju_9Z-6801NGkdaXzVdiqArS4JNt762QVd_wHpP4gV8Z4nxiE3VH9Y9-vqdYF-5PnggGrwhrgkErd7pzgZiLEaRehBpQwMW0eJFcuZ0hXbyW8fJ68PiZf6ULlePz_PZMgWesy5dA2hYF0ChyIxRU600VQ5oxnMnlZbO6MLG2biMc5AghBRCSXC8cAWXRoyT60E3On_0Frty0_ShjpYlV4pNRcZpHqmbgYLQIAbryjb4rQ77ktHyJ-Dyni_eDgHPInw1wAHhyP0_QHwDuix7gw</recordid><startdate>20230202</startdate><enddate>20230202</enddate><creator>Lim, Sungil</creator><creator>Kim, Yu Chang</creator><general>Royal Society of Chemistry</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>7ST</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0002-9253-3693</orcidid></search><sort><creationdate>20230202</creationdate><title>Optimization of pilot-scale re-mineralization by calcite dissolution using sulfuric acid for seawater desalination processes</title><author>Lim, Sungil ; Kim, Yu Chang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c281t-bccacb9c0c94dd75a7a07fc0428f67a6fda9efc0df422c6c3363376cf29f926d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Acidification</topic><topic>Calcite</topic><topic>Calcite dissolution</topic><topic>Calcium</topic><topic>Calcium carbonate</topic><topic>Calcium carbonates</topic><topic>Calcium ions</topic><topic>Carbonates</topic><topic>Contamination</topic><topic>Desalination</topic><topic>Dissolution</topic><topic>Dissolving</topic><topic>Drinking water</topic><topic>Feeds</topic><topic>Flow rates</topic><topic>Flow velocity</topic><topic>Granular materials</topic><topic>Heavy metals</topic><topic>Impurities</topic><topic>Ions</topic><topic>Membranes</topic><topic>Metals</topic><topic>Mineralization</topic><topic>Optimization</topic><topic>Reverse osmosis</topic><topic>Seawater</topic><topic>Sulfuric acid</topic><topic>Sulphuric acid</topic><topic>Wastewater</topic><topic>Water desalting</topic><topic>Water quality</topic><topic>Water quality standards</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lim, Sungil</creatorcontrib><creatorcontrib>Kim, Yu Chang</creatorcontrib><collection>CrossRef</collection><collection>Aqualine</collection><collection>Environment Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environment Abstracts</collection><jtitle>Environmental science water research & technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lim, Sungil</au><au>Kim, Yu Chang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Optimization of pilot-scale re-mineralization by calcite dissolution using sulfuric acid for seawater desalination processes</atitle><jtitle>Environmental science water research & technology</jtitle><date>2023-02-02</date><risdate>2023</risdate><volume>9</volume><issue>2</issue><spage>62</spage><epage>629</epage><pages>62-629</pages><issn>2053-1400</issn><eissn>2053-1419</eissn><abstract>Desalinated water produced using reverse osmosis (RO) membranes must be re-mineralized with mono- and multi-valent ions and particles before being supplied as drinking water. Mineral dissolution of calcite is done by sending acidified desalinated water through a column bed, and it has been widely used for re-mineralization of desalinated water. This work aims to optimize a pilot-scale calcite bed reactor system (10-25 ton per day) to efficiently dissolve calcite granules to supply calcium (Ca
2+
) ions. The feed water was acidified using sulfuric acid, and several operational parameters (
i.e.
, flow rate, acid dosage and bed contact volume) were manipulated for system optimization. As a result, the calcite bed system under the acidified feed at pH 4 and the empty bed contact time (EBCT) at 12.7 min exhibited the most efficient calcite dissolution with dissolved calcium ions of over 80 mg L
−1
(as CaCO
3
) and a permeate pH of over 8, conforming to drinking water standards. In addition, the production quantity increased with a higher feed flow rate and a shorter EBCT. The calcite granules used in this study mostly contained pure calcium carbonate over 99%, which prevented additional contamination of the final produced water by calcite impurities or heavy metals. Accordingly, this study will be an informative and practical reference in terms of the calcite dissolution process for RO re-mineralization.
Desalinated water produced using reverse osmosis (RO) membranes must be re-mineralized with alkali ions before being supplied as drinking water.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><doi>10.1039/d2ew00768a</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0002-9253-3693</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 2053-1400 |
| ispartof | Environmental science water research & technology, 2023-02, Vol.9 (2), p.62-629 |
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| language | eng |
| recordid | cdi_crossref_primary_10_1039_D2EW00768A |
| source | Royal Society Of Chemistry Journals 2008- |
| subjects | Acidification Calcite Calcite dissolution Calcium Calcium carbonate Calcium carbonates Calcium ions Carbonates Contamination Desalination Dissolution Dissolving Drinking water Feeds Flow rates Flow velocity Granular materials Heavy metals Impurities Ions Membranes Metals Mineralization Optimization Reverse osmosis Seawater Sulfuric acid Sulphuric acid Wastewater Water desalting Water quality Water quality standards |
| title | Optimization of pilot-scale re-mineralization by calcite dissolution using sulfuric acid for seawater desalination processes |
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