HEAVY METAL REMOVAL FROMAQUEOUS SOLUTION BY NANOCOMPOSITE ALGINATE_MCM-41

Publish Year: 1390
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

UFGNSM03_156

تاریخ نمایه سازی: 10 تیر 1396

Abstract:

In this study, a new nanocomposite adsorbent was synthesized by encapsulation of the nanoporous MCM-41 in the biopolymeric matrix of calcium alginate and its adsorption behavior for some of toxic metals (Pb, Zn, Hg, Co, Ni) was investigated. The nanocomposite alginate-MCM-41 (NCAMCM-41) was characterized using powder X-ray diffraction and nitrogen adsorption-desorption isotherm data. The effect of pH, contact time, temperature, initial concentration and adsorption kinetics were studied by batch method. The results show that the NCA-MCM-41 has high affinity for adsorption of lead and cobalt compared with alginate. Freundlich and Longmuir models were used for mathematics description of the adsorption isotherm.

Keywords:

MCM-41 , Nanocomposite , Sodium alginate. Heavy metal ion , Adsorption

Authors

H. TAVAKOLI

Faculty of Science, Islamic Azad University, Nour Branch Nour, Iran

H. SEPEHRLAN

NFCRS, Nuclear science and technology Research Institute, AEOI Tehran, Iran

R. CHERAGHALI

Chemistry Department, Islamic Azad University, Saveh Branch Saveh, Iran