Volume 17, Issue 65 (fall 2013)
jwss 2013, 17(65): 125-137 |
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L. Divband, S. Boroomand nasab, M. Behzad, J. Abedi Koupai. Efficiency of Cedar (Zizyphus spinachristi) Leaf and its Fly Ash in Removing Cadmium (II) from Water by Batch Adsorption. jwss 2013; 17 (65) :125-137
URL: http://jstnar.iut.ac.ir/article-1-1810-en.html
URL: http://jstnar.iut.ac.ir/article-1-1810-en.html
, koupai@cc.iut.ac.ir
Abstract: (15038 Views)
Heavy metals in water resources are one of the most important environmental problems in most of countries. Up to now, various methods for removing these metals including using low price materials have been used. In this study, two new absorbents (zizyphus spinachristi leaf and its fly ash) were studied for adsorption of cadmium from aqueous solutions using batch experiments. The effect of contact time, pH, and amount of adsorbent on adsorption efficiency was evaluated and the best kinetic and isotherm model was determined. Results showed that optimal absorption of pH was 5 and 6 for zizyphus spinachristi leaf and its fly ash, respectively. The equilibrium time was 45 min for zizyphus spinachristi leaf and 30 min for ash. Adsorption efficiency was increased by increasing the adsorbent dose. By comparing the parameters of isotherm models, it was observed that the cadmium adsorption capacity of fly ash (4.27 mg/gr) was higher than that of zizyphus spinachristi (3.91 mg/gr).
Type of Study: Research |
Subject:
Ggeneral
Received: 2011/11/29 | Accepted: 2012/08/15 | Published: 2013/12/4
Received: 2011/11/29 | Accepted: 2012/08/15 | Published: 2013/12/4
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