Effective Removal of Lead (II) Ions from Aqueous Solution Using Montmorillonite/TiO2 Clay
Publish place: 20th Iranian Inorganic Chemistry Conference
Publish Year: 1397
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
IICC20_119
تاریخ نمایه سازی: 2 تیر 1398
Abstract:
Lead (Pb) is the third-most common toxic element in the heavy metal toxicity list. It is also one of the 10 chemicals that the WHO has set out as a cause for significant public health concerns [1]. The removal of Pb (II) has become a great concern globally due to these toxic effects of Pb (II) on living beings. In the past few years, various techniques have been used for lead removal [2]. Among these methods, adsorption has the advantages of being easy to perform and having a low cost and high efficiency. Thus, it has been used commonly in the heavy metal pollution treatment of water [3]. Clay as an adsorbent is widely used for the removal of heavy metals and has great applicability due to its being economical and having an environment-friendly nature, a high adsorption capacity, and a wide pH range.In this study, montmorillonite/TiO2 (Mont/TiO2) mineral was made nano-size and characterized by FT-IR, XRD and FE-SEM. Then nano Mont/TiO2 was used to adsorb Pb(II) in the aqueous solution. Figs.1a, b shows the effect of dosage of adsorbent and contact time on the removal of Pb(II) ion in the presence of Mont and Mont/TiO2, respectively. The obtained results show that the efficiency of these adsorbents is such that a small amount of adsorbent, even 20 mg can eliminate a significant amount of lead ion (II) (50 ppm) over a short period of time (5 minutes).
Authors
Seddigheh Dianat
Department of Environment, Bandar Abbas Branch, Islamic Azad University, Bandar Abbas, Iran.Iranian National Standards Organization of Hormozgan
Mohammad Sedigh Mortazavi
Department of Environment, Bandar Abbas Branch, Islamic Azad University, Bandar Abbas, Iran.Persian Gulf and Oman Sea Ecology Research Center, Bandar Abbas, Iran