Journal
JOURNAL OF WATER SUPPLY RESEARCH AND TECHNOLOGY-AQUA
Volume 65, Issue 6, Pages 465-479Publisher
IWA PUBLISHING
DOI: 10.2166/aqua.2016.014
Keywords
adsorbent; isotherm; kinetic; nanocomposites; zeolite
Categories
Funding
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia (UPM)
Ask authors/readers for more resources
How to completely remove toxic metals from water is still a serious challenge, and is the mission that faces researchers and scientists today. In this work, zeolite/copper oxide (CuO) and zeolite/iron oxide (Fe3O4) nanocomposites (NCs) were prepared via a co-precipitation method. Several techniques were used for characterization of the prepared NCs including UV-visible, powder X-ray diffraction, N-2 adsorption for determining the specific surface areas (Brunauer-Emmett-Teller (BET)) and pore volumes. The morphology was investigated by field emission scanning electron microscopy. The batch adsorption experiment process was used to study the applicability of the prepared NCs to removing lead (Pb) and arsenic (As) from aqueous solutions. The effects of the adsorbent dosage, pH, initial metal concentration and contact time on the adsorption process were investigated. The obtained results revealed that in 40 minutes 0.15 g of prepared zeolite/Fe3O4 (NCs) was able to remove 97.2% of Pb and 96.8% of As from 100 mg/L aqua solutions at a pH of between 4 and 6. The Langmuir isotherm model showed higher correlation coefficients and provided better agreement with the experimental data. The adsorption kinetic is a chemi-physisorption process that follows the pseudo second-order kinetic model.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available