{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T23:42:00Z","timestamp":1788478920229,"version":"build-2803163510"},"reference-count":43,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2023,7,31]],"date-time":"2023-07-31T00:00:00Z","timestamp":1690761600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004442","name":"National Science Centre, Poland","doi-asserted-by":"publisher","award":["2021\/05\/X\/ST5\/00434"],"award-info":[{"award-number":["2021\/05\/X\/ST5\/00434"]}],"id":[{"id":"10.13039\/501100004442","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004442","name":"National Science Centre, Poland","doi-asserted-by":"publisher","award":["16.16.170.7998"],"award-info":[{"award-number":["16.16.170.7998"]}],"id":[{"id":"10.13039\/501100004442","id-type":"DOI","asserted-by":"publisher"}]},{"name":"AGH University of Science and Technology, Faculty of Foundry Engineering","award":["2021\/05\/X\/ST5\/00434"],"award-info":[{"award-number":["2021\/05\/X\/ST5\/00434"]}]},{"name":"AGH University of Science and Technology, Faculty of Foundry Engineering","award":["16.16.170.7998"],"award-info":[{"award-number":["16.16.170.7998"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>In this study, the corrosion inhibition performance of the natural polysaccharide guar gum (GG) for N80 carbon steel in CO2-saturated saline solution at different temperatures and immersion times was investigated by weight loss and electrochemical measurements. The results have revealed that GG showed good inhibition performance at lower and higher temperatures. The inhibition efficiency observed via weight loss measurements reached 76.16 and 63.19% with 0.4 g L\u22121 of GG, at 25 and 50 \u00b0C, respectively. The inhibition efficiency of GG increased as the inhibitor concentration and immersion time increased but decreased with increasing temperature. EIS measurements have shown that, even after prolonged exposure, GG was still able to protect the metal surface. Potentiodynamic measurements showed the mixed-type nature of GG inhibitive action. The Temkin and Dubinin\u2013Radushkevich adsorption isotherm models give accurate fitting of the estimated data, and the calculated parameters indicated that the adsorption of GG occurred mainly via an electrostatic or physical adsorption process. The associated activation energy (Ea) and the heat of adsorption (Qa) supported the physical adsorption nature of GG. FTIR analysis was used to explain the adsorption interaction between the inhibitor and the N80 carbon steel surface. SEM-EDS and AFM confirmed the adsorption of GG and the formation of an adsorptive layer of GG on the metal surface.<\/jats:p>","DOI":"10.3390\/ijms241512269","type":"journal-article","created":{"date-parts":[[2023,8,1]],"date-time":"2023-08-01T09:06:44Z","timestamp":1690880804000},"page":"12269","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["Guar Gum as an Eco-Friendly Corrosion Inhibitor for N80 Carbon Steel under Sweet Environment in Saline Solution: Electrochemical, Surface, and Spectroscopic Studies"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2184-5902","authenticated-orcid":false,"given":"Gaetano","family":"Palumbo","sequence":"first","affiliation":[{"name":"Department of Chemistry and Corrosion of Metals, Faculty of Foundry Engineering, AGH University of Science and Technology, al. Mickiewicza 30, PL-30059 Krakow, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0824-1218","authenticated-orcid":false,"given":"Dominika","family":"\u015awi\u0119ch","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Corrosion of Metals, Faculty of Foundry Engineering, AGH University of Science and Technology, al. Mickiewicza 30, PL-30059 Krakow, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6682-2611","authenticated-orcid":false,"given":"Marcin","family":"G\u00f3rny","sequence":"additional","affiliation":[{"name":"Department of Cast Alloys and Composites Engineering, Faculty of Foundry Engineering, AGH University of Science and Technology, al. Mickiewicza 30, PL-30059 Krakow, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,7,31]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Nunes, L.J.R. (2023). The Rising Threat of Atmospheric CO2: A Review on the Causes, Impacts, and Mitigation Strategies. Environments, 10.","DOI":"10.3390\/environments10040066"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"272","DOI":"10.3389\/fmats.2019.00272","article-title":"Corrosion Control in CO2 Enhanced Oil Recovery From a Perspective of Multiphase Fluids","volume":"6","author":"Wang","year":"2019","journal-title":"Front. Mater."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"108140","DOI":"10.1016\/j.corsci.2019.108140","article-title":"Alternative corrosion inhibitor formulation for carbon steel in CO2-saturated brine solution under high turbulent flow condition for use in oil and gas transportation pipelines","volume":"159","author":"Obot","year":"2019","journal-title":"Corros. Sci."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"6458","DOI":"10.1007\/s11665-019-04379-3","article-title":"Corrosion Inhibition of Pipeline Carbon Steel (N80) in CO2-Saturated Chloride (0.5 M of KCl) Solution Using Gum Arabic as a Possible Environmentally Friendly Corrosion Inhibitor for Shale Gas Industry","volume":"28","author":"Palumbo","year":"2019","journal-title":"J. Mater. Eng. Perform."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"492","DOI":"10.1016\/j.ijggc.2015.04.007","article-title":"Carbon negative oil: A pathway for CO2 emission reduction goals","volume":"37","author":"Hornafius","year":"2015","journal-title":"Int. J. Greenh. Gas Control"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1367","DOI":"10.1007\/s10008-009-0963-6","article-title":"Corrosion inhibition and adsorption behavior of imidazoline salt on N80 carbon steel in CO2-saturated solutions and its synergism with thiourea","volume":"14","author":"Okafor","year":"2009","journal-title":"J. Solid State Electrochem."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"246","DOI":"10.1016\/j.corsci.2014.07.039","article-title":"Corrosion inhibition of mild steel in acidic medium by polyacrylamide grafted Guar gum with various grafting percentage: Effect of intramolecular synergism","volume":"88","author":"Roy","year":"2014","journal-title":"Corros. Sci."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"127","DOI":"10.1016\/j.corsci.2017.06.021","article-title":"Inhibition effect of imidazoline inhibitor on the crevice corrosion of N80 carbon steel in the CO2-saturated NaCl solution containing acetic acid","volume":"126","author":"Li","year":"2017","journal-title":"Corros. Sci."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"7273","DOI":"10.1021\/ie1024112","article-title":"Corrosion and Corrosion Inhibition Behavior of N80 and P110 Carbon Steels in CO2-Saturated Simulated Formation Water by Rosin Amide Imidazoline","volume":"50","author":"Okafor","year":"2011","journal-title":"Ind. Eng. Chem. Res."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"111064","DOI":"10.1016\/j.jpcs.2022.111064","article-title":"Understanding xanthone derivatives as novel and efficient corrosion inhibitors for P110 steel in acidizing fluid: Experimental and theoretical studies","volume":"172","author":"Singh","year":"2023","journal-title":"J. Phys. Chem. Solids"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1017","DOI":"10.1016\/j.ijbiomac.2018.06.014","article-title":"Evaluation of chitosan and carboxymethyl cellulose as ecofriendly corrosion inhibitors for steel","volume":"117","author":"Umoren","year":"2018","journal-title":"Int. J. Biol. Macromol."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"200","DOI":"10.1016\/j.carbpol.2017.09.049","article-title":"Sodium alginate: A promising biopolymer for corrosion protection of API X60 high strength carbon steel in saline medium","volume":"178","author":"Obot","year":"2017","journal-title":"Carbohydr. Polym."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"43","DOI":"10.1016\/j.molstruc.2017.05.081","article-title":"Guar gum as efficient non-toxic inhibitor of carbon steel corrosion in phosphoric acid medium: Electrochemical, surface, DFT and MD simulations studies","volume":"1145","author":"Messali","year":"2017","journal-title":"J. Mol. Struct."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"161","DOI":"10.4152\/pea.200402161","article-title":"Guar Gum as Corrosion Inhibitor for Carbon Steel in Sulfuric Acid Solutions","volume":"22","author":"Abdallah","year":"2004","journal-title":"Port. Electrochim. Acta"},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Palumbo, G., Berent, K., Proniewicz, E., and Bana\u015b, J. (2019). Guar Gum as an Eco-Friendly Corrosion Inhibitor for Pure Aluminium in 1-M HCl Solution. Materials, 12.","DOI":"10.3390\/ma12162620"},{"key":"ref_16","first-page":"e01024","article-title":"Synergistic effect of Arabic and guar gums on corrosion behavior of steel reinforced concrete in a simulator environment","volume":"16","author":"Hejazian","year":"2022","journal-title":"Case Stud. Constr. Mater."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"25398","DOI":"10.1016\/j.ijhydene.2020.06.288","article-title":"Inhibition effect of natural polysaccharide composite on hydrogen evolution and P110 steel corrosion in 3.5 wt% NaCl solution saturated with CO2: Combination of experimental and surface analysis","volume":"45","author":"Singh","year":"2020","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"26","DOI":"10.1186\/s40543-016-0108-3","article-title":"Anticorrosive efficacy and adsorptive study of guar gum with mild steel in acidic medium","volume":"7","author":"Peter","year":"2016","journal-title":"J. Anal. Sci. Technol."},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Spellman, F.R. (2013). Environmental Impacts of Hydraulic Fracturing, CRC Press.","DOI":"10.1201\/b13042"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"1722","DOI":"10.1002\/1097-0010(20000915)80:12<1722::AID-JSFA708>3.0.CO;2-X","article-title":"Viscosity of guar gum and xanthan\/guar gum mixture solutions","volume":"80","author":"Casas","year":"2000","journal-title":"J. Sci. Food Agric."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"409","DOI":"10.1007\/s13197-011-0522-x","article-title":"Guar gum: Processing, properties and food applications\u2014A Review","volume":"51","author":"Mudgil","year":"2011","journal-title":"J. Food Sci. Technol."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"2638","DOI":"10.1002\/jsfa.2308","article-title":"A comparative study on viscosity behavior of water-soluble chemically modified guar gum derivatives with different functional lateral groups","volume":"85","author":"Zhang","year":"2005","journal-title":"J. Sci. Food Agric."},{"key":"ref_23","doi-asserted-by":"crossref","unstructured":"Pilla, S. (2011). Handbook of Bioplastics and Biocomposites Engineering Applications, Scrivener Publishing LLC.","DOI":"10.1002\/9781118203699"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"384","DOI":"10.1016\/j.carbpol.2015.09.027","article-title":"Inhibitory effect of xanthan gum and synergistic surfactant additives for mild steel corrosion in 1 M HCl","volume":"136","author":"Mobin","year":"2016","journal-title":"Carbohydr. Polym."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"426","DOI":"10.1016\/j.corsci.2013.12.018","article-title":"Gum Arabic as an eco-friendly inhibitor for API 5L X42 pipeline steel in HCl medium","volume":"82","author":"Bentrah","year":"2014","journal-title":"Corros. Sci."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1317","DOI":"10.1016\/j.corsci.2009.11.041","article-title":"Inhibitive and adsorption behaviour of carboxymethyl cellulose on mild steel corrosion in sulphuric acid solution","volume":"52","author":"Solomon","year":"2010","journal-title":"Corros. Sci."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"121408","DOI":"10.1016\/j.molliq.2023.121408","article-title":"Evaluation of corrosion mitigation properties of pyridinium-based ionic liquids on carbon steel in 15% HCl under the hydrodynamic condition: Experimental, surface, and computational approaches","volume":"376","author":"Singh","year":"2023","journal-title":"J. Mol. Liq."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"865","DOI":"10.1016\/j.molliq.2016.04.048","article-title":"Macrocyclic inhibitor for corrosion of N80 steel in 3.5% NaCl solution saturated with CO2","volume":"219","author":"Singh","year":"2016","journal-title":"J. Mol. Liq."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"277","DOI":"10.1108\/00035590610692554","article-title":"Gum arabic as a potential corrosion inhibitor for aluminium in alkaline medium and its adsorption characteristics","volume":"53","author":"Umoren","year":"2006","journal-title":"Anti-Corros. Methods Mater."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"873","DOI":"10.1007\/s10800-008-9733-x","article-title":"CO2 corrosion of carbon steel in the presence of acetic acid at higher temperatures","volume":"39","author":"Okafor","year":"2008","journal-title":"J. Appl. Electrochem."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"2236","DOI":"10.1016\/S1872-1508(08)60085-6","article-title":"Adsorption Behavior and Inhibition Corrosion Effect of Sodium Carboxymethyl Cellulose on Mild Steel in Acidic Medium","volume":"24","author":"Bayol","year":"2008","journal-title":"Acta Phys. Chim. Sin."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"140","DOI":"10.1016\/j.corsci.2009.08.055","article-title":"Testing validity of the Tafel extrapolation method for monitoring corrosion of cold rolled steel in HCl solutions\u2014Experimental and theoretical studies","volume":"52","author":"Amin","year":"2010","journal-title":"Corros. Sci."},{"key":"ref_33","first-page":"227","article-title":"Corrosion Mechanism of Carbon Steel in the Presence of Acetate and Acetic Acid","volume":"6","author":"Liu","year":"2007","journal-title":"Corros. Sci. Technol."},{"key":"ref_34","doi-asserted-by":"crossref","unstructured":"Wu, W., Yin, H., Zhang, H., Kang, J., Li, Y., and Dan, Y. (2018). Electrochemical Investigation of Corrosion of X80 Steel under Elastic and Plastic Tensile Stress in CO2 Environment. Metals, 8.","DOI":"10.3390\/met8110949"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"1246","DOI":"10.5006\/3233","article-title":"Decanethiol as a Corrosion Inhibitor for Carbon Steels Exposed to Aqueous CO2","volume":"75","author":"Belarbi","year":"2019","journal-title":"Corrosion"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"12","DOI":"10.1016\/j.corsci.2017.10.010","article-title":"Study of stainless steels corrosion in a strong acid mixture. Part 2: Anodic selective dissolution, weight loss and electrochemical impedance spectroscopy tests","volume":"130","author":"Bellezze","year":"2018","journal-title":"Corros. Sci."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"1035","DOI":"10.1016\/j.ijbiomac.2012.02.031","article-title":"X-ray diffraction, IR spectroscopy and thermal characterization of partially hydrolyzed guar gum","volume":"50","author":"Mudgil","year":"2012","journal-title":"Int. J. Biol. Macromol."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"2468","DOI":"10.1080\/01694243.2017.1306912","article-title":"Effect of chemical modification of a natural polysaccharide on its inhibitory action on mild steel in 15% HCl solution","volume":"31","author":"Biswas","year":"2017","journal-title":"J. Adhes. Sci. Technol."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"10041","DOI":"10.1007\/s13399-021-01895-y","article-title":"Optimization of guar gum galactomannan sulfation process with sulfamic acid","volume":"13","author":"Kazachenko","year":"2021","journal-title":"Biomass Convers. Biorefin."},{"key":"ref_40","doi-asserted-by":"crossref","unstructured":"S\u00e1nchez-Eleuterio, A., Mendoza-Merlos, C., Corona S\u00e1nchez, R., Navarrete-L\u00f3pez, A.M., Mart\u00ednez Jim\u00e9nez, A., Ram\u00edrez-Dom\u00ednguez, E., Lomas Romero, L., Orozco Cruz, R., Espinoza V\u00e1zquez, A., and Negr\u00f3n-Silva, G.E. (2023). Experimental and Theoretical Studies on Acid Corrosion Inhibition of API 5L X70 Steel with Novel 1-N-\u03b1-d-Glucopyranosyl-1H-1,2,3-Triazole Xanthines. Molecules, 28.","DOI":"10.3390\/molecules28010460"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"1223","DOI":"10.1016\/S0010-938X(01)00141-X","article-title":"Fe3C influence on the corrosion rate of mild steel in aqueous CO2 systems under turbulent flow conditions","volume":"44","author":"Turgoose","year":"2002","journal-title":"Corros. Sci."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"461","DOI":"10.1590\/S1516-14392013005000182","article-title":"Analysis of the corrosion scales formed on API 5L X70 and X80 steel pipe in the presence of CO2","volume":"17","author":"Forero","year":"2013","journal-title":"Mater. Res."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"1231","DOI":"10.1016\/S0010-938X(98)00180-2","article-title":"An XPS characterization of FeCO3 films from CO2 corrosion","volume":"41","author":"Heuer","year":"1999","journal-title":"Corros. Sci."}],"container-title":["International Journal of Molecular Sciences"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1422-0067\/24\/15\/12269\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T20:23:25Z","timestamp":1760127805000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1422-0067\/24\/15\/12269"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,7,31]]},"references-count":43,"journal-issue":{"issue":"15","published-online":{"date-parts":[[2023,8]]}},"alternative-id":["ijms241512269"],"URL":"https:\/\/doi.org\/10.3390\/ijms241512269","relation":{},"ISSN":["1422-0067"],"issn-type":[{"value":"1422-0067","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,7,31]]}}}