Journals / Bilimsel Madencilik Dergisi / 2005 / Cilt: 44 - Sayı: 2

Influence of Magnesium, Lead and Manganese Ions on the Gelling Characteristics of Bentonite Suspensions

MAGNEZYUM, KURŞUN VE MANGANEZ İYONLARININ BENTONİT SÜSPANSİYONLARININ JELLEŞME KARAKTERİSTİĞİ ÜZERİNDEKİ ETKİSİ

Pages
17–24
Publication Date
2005-06-01
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

This increase was assigned to the formation of positively charged edge surfaces due to adsorption of MOH+ type cations that form at specific pH values in the suspesion with respect to the type of cation

📌 3 Key Takeaways

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Objective & Hypothesis:Effects of MgO, MgCl2⋅6H2O, PbCl2 and MnCl2⋅2H2O as inorganic additives on gelling property of a bentonite were determined with gelling coefficient tests, sedimentation volume ratio tests and electrophoretic mobility measurements.
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Key Findings & Data:These compounds when added into the bentonite suspension at concentrations of 1.5x10-3 M were found to give maximum gelling coefficient and sedimentation volume ratio values corresponding to pH values (pH=8, 9 ve 10) of maximum MOH+ type (PbOH+ ,MnOH+ and MgOH+, respectively) complex formation.
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Conclusion & Impact:This increase was assigned to the formation of positively charged edge surfaces due to adsorption of MOH+ type cations that form at specific pH values in the suspesion with respect to the type of cation
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Bentonit · Jelleşme · Montmorillonit

Abstract

Effects of MgO, MgCl2⋅6H2O, PbCl2 and MnCl2⋅2H2O as inorganic additives on gelling property of a bentonite were determined with gelling coefficient tests, sedimentation volume ratio tests and electrophoretic mobility measurements. These compounds when added into the bentonite suspension at concentrations of 1.5x10-3 M were found to give maximum gelling coefficient and sedimentation volume ratio values corresponding to pH values (pH=8, 9 ve 10) of maximum MOH+ type (PbOH+ ,MnOH+ and MgOH+, respectively) complex formation. The gelling property was improved in the order Pb < Mn < Mg causing 11.5%, 20.1% and 30.1% increases in the gelling coefficient values of the sample. This increase was assigned to the formation of positively charged edge surfaces due to adsorption of MOH+ type cations that form at specific pH values in the suspesion with respect to the type of cation

Özet

MgO, MgCl2⋅6H2O, PbCl2 ve MnCl2⋅2H2O inorganik katkı maddelerinin bentonitin jelleşme özellikleri üzerindeki etkileri jelleşme katsayısı testleri, çökelti hacmi oranı testleri ve elektroforetik hareketlilik ölçümleri ile belirlenmiştir. Bu bileşikler, 1,5x10-3 M derişimde bentonit süspansiyona ilave edildiklerinde, maksimum derişimde MOH+ tipinde iyonlarının (PbOH+, MnOH+ ve MgOH+) oluştuğu pH değerlerinde (sırasıyla pH=8, 9 ve 10) bentonite en yüksek jelleşme katsayısı ve çökelti hacmi oranı değerlerini kazandırmaktadırlar. Bentonitin jelleşme özelliği Pb < Mn < Mg sırasına göre iyileştirilmiş ve bentonitin jelleşme katsayısı değerlerinde sırasıyla %11,5, %20,1 ve %30,1’lik artışlar elde edilmiştir. Bu artışlar ise süspansiyon içerisinde katyon tipine göre belirli pH değerlerinde oluşan MOH+ tipindeki katyonların pozitif yüklü kenar yüzeyleri oluşturması ile açıklanabilmektedir.

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Cite This Article

OBUT, A., GİRGİN, İ. (2005). Influence of Magnesium, Lead and Manganese Ions on the Gelling Characteristics of Bentonite Suspensions. Bilimsel Madencilik Dergisi, Cilt: 44 - Sayı: 2, 17–24. https://ajindex.com/articles/58733

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