Investigation of the Effect of Temperature and pH on the Solubility Limits of Major Salts in Seawater

Investigation of the Effect of Temperature and pH on the Solubility Limits of Major Salts in Seawater | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Investigation of the Effect of Temperature and pH on the Solubility Limits of Major Salts in Seawater H. Al-Sairfi, M. A. Salman, M. Ahmed, F. Alelaj, M. Alhamli This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8820043/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract In this paper, results for the experimental study of the solubility limits of scaling salts such as CaCl 2 , MgCl 2 , KCl, Na 2 SO 4 and NaHCO 3 are conducted in brine solutions, real seawater, and artificial seawater at different pH levels. For this purpose, sodium chloride solutions are prepared at different concentrations, and artificial seawater samples are prepared in a manner to get closer to the case of seawater in Kuwait. Obtained results show significant “salting-in” and/or “salting-out” effects: the solubility is reduced dramatically by more than 95% when increasing the concentration of the brine. Another result was that the solution containing 25% sodium chloride cannot be considered equivalent to real seawater when discussing salt solubility, where the solubility of salts in real seawater is found to be 15% for CaCl 2 and distilled water for MgCl 2 . This means that the accuracy of predictions of scaling potential in real systems is not ensured when using a single-concentration NaCl simulant. On the other hand, the effect of changing pH levels was limited to the cases of calcium chloride and sodium chloride, while the other salts have shown slight sensitivity to changes in pH levels. This behavior is discussed and is related to the ionic strength value. Seawater scaling solubility limit ionic strength desalination Full Text Additional Declarations The authors declare no competing interests. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-8820043","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":587647036,"identity":"7ed42a22-0aa1-43ff-bf10-4753446b2ab2","order_by":0,"name":"H. 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For this purpose, sodium chloride solutions are prepared at different concentrations, and artificial seawater samples are prepared in a manner to get closer to the case of seawater in Kuwait. Obtained results show significant \u0026ldquo;salting-in\u0026rdquo; and/or \u0026ldquo;salting-out\u0026rdquo; effects: the solubility is reduced dramatically by more than 95% when increasing the concentration of the brine. Another result was that the solution containing 25% sodium chloride cannot be considered equivalent to real seawater when discussing salt solubility, where the solubility of salts in real seawater is found to be 15% for CaCl\u003csub\u003e2\u003c/sub\u003e and distilled water for MgCl\u003csub\u003e2\u003c/sub\u003e. This means that the accuracy of predictions of scaling potential in real systems is not ensured when using a single-concentration NaCl simulant. On the other hand, the effect of changing pH levels was limited to the cases of calcium chloride and sodium chloride, while the other salts have shown slight sensitivity to changes in pH levels. 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