ورقة بحثية
Cadmium Adsorption on HDTMA Modified Montmorillionite = امتصاص الكادميوم من المياه باستعمال المنتموريليت المعدلة بواسطة HDTMA

Ahmed, Mohd. Elmuntasir I.


 

Cadmium Adsorption on HDTMA Modified Montmorillionite = امتصاص الكادميوم من المياه باستعمال المنتموريليت المعدلة بواسطة HDTMA

Ahmed, Mohd. Elmuntasir I.

In this paper the possibility of cadmium removal from aqueous solutions by adsorption onto modified montmorillonite clay is investigated. Batch adsorption experiments performed revealed an enhanced removal of cadmium using HDTMA modified montmorillonite to 100% of its exchange capacity. Modified montmorillonite adsorption capacity increases at higher pHs suggesting adsorption occurs as a result of surface precipitation and HDTMA complex formation due to the fact that the original negatively charged montmorillonite is now covered by a cationic layer of HDTMA. Adsorption isotherms generated followed a Langmuir isotherm equation possibly indicating a monolayer coverage. Adsorption capacities of up to 49 mg/g and removals greater than 90% were achieved. Anionic selectivity of the HDTMA modified monmorillonite is particularly advantageous in water treatment applications where high concentrations of less adsorbable species are present, and the lack of organoclay affinity for these species may allow the available capacity to be utilized selectively by the targeted species.

In this paper the possibility of cadmium removal from aqueous solutions by adsorption onto modified montmorillonite clay is investigated. Batch adsorption experiments performed revealed an enhanced removal of cadmium using HDTMA modified montmorillonite to 100% of its exchange capacity. Modified mon...

مادة فرعية

المؤلف : Ahmed, Mohd. Elmuntasir I.

بيانات النشر : Muscat، Sultanate of Oman : Sultan Qaboos University/ The Journal of Engineering Research، 2009مـ.

التصنيف الموضوعي : العلوم التطبيقية|الهندسة .

المواضيع : Engineering .

الهندسة .

رقم الطبعة : 1

المصدر : Sultan Qaboos University : Muscat، Sultanate of Oman.

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