Adsorption of Malachite Green and Nile Blue from Aqueous Solution onto Bentonite Clay Surface

Bashaer J. Kadhim

doi:10.12816/0010046

Article Details

Adsorption of Malachite Green and Nile Blue from Aqueous Solution onto Bentonite Clay Surface

Authors:

Bashaer J. Kadhim

Publisher:

The International Centre for Advancement of Sciences and Technology

Main Topics:

Agriculture

Journal:

International Journal for Sciences and Technology 2013 vol.8 Issue 2, pp.6-16

Document Type:

Article

Publication Date:

6/2013

Document Language:

English

Document ID (Org No.):

60240

Frequency:

Quarterly

eISSN:

18172509

pISSN:

18162509

DOI:

10.12816/0010046

Descriptors:

Abstract:

 The adsorption process of malachite Green and Nile blue from aqueous solution onto bentonite was studied. The results showed that the adsorption capacity of bentonite for the two dyes was 9.88 and 8.82 mg/g respectively.
The figure of the adsorption isotherms indicated L4 type isotherms according to the Giles classification.
The experimental adsorption results showed good correlation with the Langmuir and Ferundlich models. Experimental data indicated that the adsorption capacity of bentonite for the Malachite-Green dye was higher in basic rather than in acidic solution, whereas the Nile-blue was higher in neutral rather than in acidic solution, this was attributed to aggregation of two dyes in solution.
Thermodynamic studies indicated that the adsorption of Malachite-Green onto bentonite was an exothermic process, while the adsorption of Nile-blue onto bentonite was an endothermic process. The adsorption enthalpy (∆H) for Malachite-Green and Nile-blue were calculated at -3.51 and +5.03 kJ/mole, respectively.

 تم دراسة عملية امتزاز صبغة الملكات الخضراء وصبغة النيل الزرقاء من المحلول المائي باستخدام سطح طين البنتونايت، حيث بينت النتائج أن سعة امتزاز البنتونايت للصبغتين كانت 9.88 و 8.82 ملغم / غم على التوالي.
وأوضحت النتائج أن إيزوثيرمات الامتزاز على سطح طين البنتونايت كانت من النوع L4 وفق تصنيف جيلز(Giles).
بينت نتائج الامتزاز التجريبية وجود علاقة جيدة مع علاقات Langmuir و Ferundlich، واتضح أن سعة امتزاز البنتونايت لصبغة الملكات الخضراء كانت أعلى في المحلول القاعدي مما في المحلول الحامضي، بينما كانت لصبغة النيل الزرقاء أعلى في المحلول المتعادل مما في المحلول الحامضي، ويعزى ذلك الى تجمع الصبغتين في المحلول.
تشير الدراسات الديناميكية الحرارية أن امتزاز الملكات الخضراء على البنتونايت كان باعثا للحرارة، في حين كان ماصا للحرارة بالنسبة إلى صبغة النيل الزرقاء ، وتم حساب أنثالبي الامتزاز (∆H) للصبغتين فكانت -3.51 kJ/moleلصبغة الملكات و+5.03kJ/moleلصبغة النيل.

Article Details

Adsorption of Malachite Green and Nile Blue from Aqueous Solution onto Bentonite Clay Surface

Authors:

Bashaer J. Kadhim

Publisher:

The International Centre for Advancement of Sciences and Technology

Main Topics:

Agriculture

Journal:

International Journal for Sciences and Technology 2013 vol.8 Issue 2, pp.6-16

Document Type:

Article

Publication Date:

6/2013

Document Language:

English

Document ID (Org No.):

60240

Frequency:

Quarterly

eISSN:

18172509

pISSN:

18162509

DOI:

10.12816/0010046

Descriptors:

CLAY MINERALS

SURFACE CHEMISTRY

ADSORPTION

BENTONITE

MALACHITE

ABSORPTION

Issues

Article Details

Adsorption of Malachite Green and Nile Blue from Aqueous Solution onto Bentonite Clay Surface

Authors: Bashaer J. Kadhim

Publisher: The International Centre for Advancement of Sciences and Technology

Main Topics: Agriculture

Journal: International Journal for Sciences and Technology 2013 vol.8 Issue 2, pp.6-16

Document Type: Article

Publication Date: 6/2013

Document Language: English

Document ID (Org No.): 60240

Frequency: Quarterly

eISSN: 18172509

pISSN: 18162509

DOI: 10.12816/0010046

Descriptors:

CLAY MINERALS

SURFACE CHEMISTRY

ADSORPTION

BENTONITE

MALACHITE

ABSORPTION

Issues

Authors:

Bashaer J. Kadhim

Publisher:

The International Centre for Advancement of Sciences and Technology

Main Topics:

Agriculture

Journal:

International Journal for Sciences and Technology 2013 vol.8 Issue 2, pp.6-16

Document Type:

Article

Publication Date:

6/2013

Document Language:

English

Document ID (Org No.):

60240

Frequency:

Quarterly

eISSN:

18172509

pISSN:

18162509

DOI:

10.12816/0010046