K. Palanisamy, K. Sanjiv Raj, M. Nirmala Devi, V.K. Subramanian
{"title":"Effect of EGTA and metal induced polymorphic selectivity of calcium carbonate scale on copper and aluminum","authors":"K. Palanisamy, K. Sanjiv Raj, M. Nirmala Devi, V.K. Subramanian","doi":"10.1016/j.md.2016.09.001","DOIUrl":null,"url":null,"abstract":"<div><p><span>Crystallization behavior and polymorphism of calcium carbonate scale deposited from its sludge on aluminum and copper substrates in the presence of ethylene glycol-O,Oʼ-bis(2-aminoethyl)-</span><em>N</em>,<em>N</em>,<em>N</em>ʼ,<em>N</em>ʼ-tetraacetic acid (EGTA) as a chelating agent/scale inhibitor was investigated. The experiments were carried out at 60 and 100<!--> <span>°C and the samples were characterized by XRD, FTIR and SEM techniques. The data revealed that at 100</span> <span>°C only calcite was found in the presence of copper, whereas with aluminum a ternary mixture containing calcite, aragonite and vaterite resulted. The data revealed that the polymorphic composition of CaCO</span><sub>3</sub> was influenced by metal present in the system.</p></div>","PeriodicalId":100888,"journal":{"name":"Materials Discovery","volume":"4 ","pages":"Pages 8-17"},"PeriodicalIF":0.0000,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.md.2016.09.001","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Discovery","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352924516300230","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
Crystallization behavior and polymorphism of calcium carbonate scale deposited from its sludge on aluminum and copper substrates in the presence of ethylene glycol-O,Oʼ-bis(2-aminoethyl)-N,N,Nʼ,Nʼ-tetraacetic acid (EGTA) as a chelating agent/scale inhibitor was investigated. The experiments were carried out at 60 and 100 °C and the samples were characterized by XRD, FTIR and SEM techniques. The data revealed that at 100°C only calcite was found in the presence of copper, whereas with aluminum a ternary mixture containing calcite, aragonite and vaterite resulted. The data revealed that the polymorphic composition of CaCO3 was influenced by metal present in the system.
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