Adsorption Characteristics of Bixin on Acid- and Alkali-Treated Kaolinite in Aprotic Solvents

المؤلفون المشاركون

Mouloungui, Zéphirin
Rahmalia, Winda
Fabre, Jean-François
Usman, Thamrin

المصدر

Bioinorganic Chemistry and Applications

العدد

المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-9، 9ص.

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2018-01-18

دولة النشر

مصر

عدد الصفحات

9

التخصصات الرئيسية

الأحياء

الملخص EN

The adsorption of bixin in aprotic solvents onto acid- and alkali-treated kaolinite was investigated.

Kaolinite was treated three times, for 6 h each, with 8 M HCl or 5 M KOH.

The adsorbents were characterized by XRD, FT-IR, EDS, and BET-N2.

The effects of contact time and dye concentration on adsorption capacity and kinetics, electronic transition of bixin before and after adsorption, and also mechanism of bixin-kaolinite adsorption were investigated.

Dye adsorption followed pseudo-second order kinetics and was faster in acetone than in dimethyl carbonate.

The best adsorption results were obtained for KOH-treated kaolinite.

In both of the solvents, the adsorption isotherm followed the Langmuir model and adsorption capacity was higher in dimethyl carbonate (qm = 0.43 mg/g) than in acetone (0.29 mg/g).

The adsorption capacity and kinetics of KOH-treated kaolinite (qm = 0.43 mg/g, k2 = 3.27 g/mg·min) were better than those of HCl-treated kaolinite (qm = 0.21 mg/g, k2 = 0.25 g/mg·min) and natural kaolinite (qm = 0.18 mg/g, k2 = 0.32 g/mg·min).

There are shift in the band position of maximum intensity of bixin after adsorption on this adsorbent.

Adsorption in this system seemed to be based essentially on chemisorption due to the electrostatic interaction of bixin with the strong basic and reducing sites of kaolinite.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

Rahmalia, Winda& Fabre, Jean-François& Usman, Thamrin& Mouloungui, Zéphirin. 2018. Adsorption Characteristics of Bixin on Acid- and Alkali-Treated Kaolinite in Aprotic Solvents. Bioinorganic Chemistry and Applications،Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1123140

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

Rahmalia, Winda…[et al.]. Adsorption Characteristics of Bixin on Acid- and Alkali-Treated Kaolinite in Aprotic Solvents. Bioinorganic Chemistry and Applications No. 2018 (2018), pp.1-9.
https://search.emarefa.net/detail/BIM-1123140

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

Rahmalia, Winda& Fabre, Jean-François& Usman, Thamrin& Mouloungui, Zéphirin. Adsorption Characteristics of Bixin on Acid- and Alkali-Treated Kaolinite in Aprotic Solvents. Bioinorganic Chemistry and Applications. 2018. Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1123140

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-1123140