Exploring carbon dioxide sequestration in desalination reject brine via NaOH reaction: A kinetics study
<p dir="ltr">Seawater desalination is one of the most sustainable means of water supply in arid and semi-arid regions. Despite its undeniable potential to meet the global water demands, there are several environmental impacts associated with its operation, including the generation of...
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2024
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| _version_ | 1864513540444913664 |
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| author | Nafis Mahmud (14150004) |
| author2 | Ahmed Khodary (18807376) Daniel V. Esposito (3130605) Muftah H. El‐Naas (14778127) |
| author2_role | author author author |
| author_facet | Nafis Mahmud (14150004) Ahmed Khodary (18807376) Daniel V. Esposito (3130605) Muftah H. El‐Naas (14778127) |
| author_role | author |
| dc.creator.none.fl_str_mv | Nafis Mahmud (14150004) Ahmed Khodary (18807376) Daniel V. Esposito (3130605) Muftah H. El‐Naas (14778127) |
| dc.date.none.fl_str_mv | 2024-09-28T15:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1016/j.cej.2024.156008 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Exploring_carbon_dioxide_sequestration_in_desalination_reject_brine_via_NaOH_reaction_A_kinetics_study/30024376 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Chemical engineering Environmental engineering Reject brine Sodium hydroxide CO2 sequestration Reaction kinetics Hydromagnesite Calcite |
| dc.title.none.fl_str_mv | Exploring carbon dioxide sequestration in desalination reject brine via NaOH reaction: A kinetics study |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">Seawater desalination is one of the most sustainable means of water supply in arid and semi-arid regions. Despite its undeniable potential to meet the global water demands, there are several environmental impacts associated with its operation, including the generation of reject brine and the emission of considerable amounts of CO<sub>2</sub>. Recently, the mineralization of carbon dioxide using desalination reject brine has emerged as a potential solution for simultaneous brine management and CO<sub>2</sub> sequestration. In this study, the reaction kinetics of desalination reject brine with CO<sub>2</sub> in the presence of NaOH are evaluated. The effect of various operating parameters, such as the temperature, CO<sub>2</sub> concentration, NaOH dosage, brine salinity, CO<sub>2</sub> flowrates and inert particles volume percent were investigated by varying them within the range of 15–55 °C, 3–20 %, 6–16 g/L, 5–72 g/L, 1–5 L/min and 0–20%, respectively. The experimental data showed that the overall rate of CO<sub>2</sub> conversion is equal to the sum of the rates observed for Ca2+ and Mg<sup>2</sup>+ carbonation reactions and increases proportionally with the increase in CO<sub>2</sub> concentration. The addition of NaOH improved the Ca<sub>2</sub>+ carbonation reaction rate but had no effect on Mg<sup>2</sup>+ carbonation reactions within the investigated reaction conditions. Interestingly, increasing brine salinity had a negative effect on the reaction rate, while the change in temperature and inert particles had minimal effect on the overall reaction rate. Analysis of the solid products showed that Hydromagnesite and Calcite were the two major products obtained. Finally, experimental data were used to develop a rate model representing the CO<sub>2</sub>-Brine-NaOH system. The developed model will assist in successfully predicting the performance of the process and pave the way for efficient brine management and CO<sub>2</sub> sequestration.</p><h2>Other Information</h2><p dir="ltr">Published in: Chemical Engineering Journal<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.cej.2024.156008" target="_blank">https://dx.doi.org/10.1016/j.cej.2024.156008</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_a69140d48e3b0a8105aa715d46b216df |
| identifier_str_mv | 10.1016/j.cej.2024.156008 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/30024376 |
| publishDate | 2024 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Exploring carbon dioxide sequestration in desalination reject brine via NaOH reaction: A kinetics studyNafis Mahmud (14150004)Ahmed Khodary (18807376)Daniel V. Esposito (3130605)Muftah H. El‐Naas (14778127)EngineeringChemical engineeringEnvironmental engineeringReject brineSodium hydroxideCO2 sequestrationReaction kineticsHydromagnesiteCalcite<p dir="ltr">Seawater desalination is one of the most sustainable means of water supply in arid and semi-arid regions. Despite its undeniable potential to meet the global water demands, there are several environmental impacts associated with its operation, including the generation of reject brine and the emission of considerable amounts of CO<sub>2</sub>. Recently, the mineralization of carbon dioxide using desalination reject brine has emerged as a potential solution for simultaneous brine management and CO<sub>2</sub> sequestration. In this study, the reaction kinetics of desalination reject brine with CO<sub>2</sub> in the presence of NaOH are evaluated. The effect of various operating parameters, such as the temperature, CO<sub>2</sub> concentration, NaOH dosage, brine salinity, CO<sub>2</sub> flowrates and inert particles volume percent were investigated by varying them within the range of 15–55 °C, 3–20 %, 6–16 g/L, 5–72 g/L, 1–5 L/min and 0–20%, respectively. The experimental data showed that the overall rate of CO<sub>2</sub> conversion is equal to the sum of the rates observed for Ca2+ and Mg<sup>2</sup>+ carbonation reactions and increases proportionally with the increase in CO<sub>2</sub> concentration. The addition of NaOH improved the Ca<sub>2</sub>+ carbonation reaction rate but had no effect on Mg<sup>2</sup>+ carbonation reactions within the investigated reaction conditions. Interestingly, increasing brine salinity had a negative effect on the reaction rate, while the change in temperature and inert particles had minimal effect on the overall reaction rate. Analysis of the solid products showed that Hydromagnesite and Calcite were the two major products obtained. Finally, experimental data were used to develop a rate model representing the CO<sub>2</sub>-Brine-NaOH system. The developed model will assist in successfully predicting the performance of the process and pave the way for efficient brine management and CO<sub>2</sub> sequestration.</p><h2>Other Information</h2><p dir="ltr">Published in: Chemical Engineering Journal<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.cej.2024.156008" target="_blank">https://dx.doi.org/10.1016/j.cej.2024.156008</a></p>2024-09-28T15:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1016/j.cej.2024.156008https://figshare.com/articles/journal_contribution/Exploring_carbon_dioxide_sequestration_in_desalination_reject_brine_via_NaOH_reaction_A_kinetics_study/30024376CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/300243762024-09-28T15:00:00Z |
| spellingShingle | Exploring carbon dioxide sequestration in desalination reject brine via NaOH reaction: A kinetics study Nafis Mahmud (14150004) Engineering Chemical engineering Environmental engineering Reject brine Sodium hydroxide CO2 sequestration Reaction kinetics Hydromagnesite Calcite |
| status_str | publishedVersion |
| title | Exploring carbon dioxide sequestration in desalination reject brine via NaOH reaction: A kinetics study |
| title_full | Exploring carbon dioxide sequestration in desalination reject brine via NaOH reaction: A kinetics study |
| title_fullStr | Exploring carbon dioxide sequestration in desalination reject brine via NaOH reaction: A kinetics study |
| title_full_unstemmed | Exploring carbon dioxide sequestration in desalination reject brine via NaOH reaction: A kinetics study |
| title_short | Exploring carbon dioxide sequestration in desalination reject brine via NaOH reaction: A kinetics study |
| title_sort | Exploring carbon dioxide sequestration in desalination reject brine via NaOH reaction: A kinetics study |
| topic | Engineering Chemical engineering Environmental engineering Reject brine Sodium hydroxide CO2 sequestration Reaction kinetics Hydromagnesite Calcite |