Volume 15, Issue 11 (2-2017)                   JRUMS 2017, 15(11): 1039-1048 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Zazouli M, Ghorbanpour R. The Efficiency of Grape Seeds in Removal of Hexavalent Chromium from Aqueous Solutions. JRUMS. 2017; 15 (11) :1039-1048
URL: http://journal.rums.ac.ir/article-1-3454-en.html
Abstract:   (3039 Views)

Background and Objective: Chromium (Cr6+) is a heavy metal which is present in industries sewages likecladding, mining, and in various concentrations. Cr6+ compared with Cr3+ is so toxic, carcinogenic,and mutagenic. Thus the aim of this study was to evaluate the efficiency of 3 types of grape seeds in adsorbing Cr6+ from aqueous solutions and determining its isotherms and kinetics.

Materials and Methods: This was an experimental study. The seeds of the three types of grapes were used as adsorbent. In this study the effects of different variables such as pH, initial chromium concentration, adsorbent dosage, and contact time were studied in a batch system. Measuring the concentration of hexavalent chromium was performed using a spectrophotometer at 540 nm.

Results: The results showed that the removal efficiency decreases with increasing pH and contact time. Alternatively, by increasing adsorbent dosage, efficiency increases for 3types of adsorbents. So that all three types of adsorbents in dosage of 0.3 mg showed 80% removal efficiency Also in the initial chromium concentration, using adsorbent in dosage of 0.2 mg/L in the pH = 3,  the obtained efficiency was more than 80% for each absorbent.

Conclusion: According to the results, the grape seeds can be effective adsorbents for the removal of hexavalent chromium from their aquatic environment. Likewise using this adsorbent is much easier and cheaper comparedwith many other natural and artificial adsorbents, which marks its priority.


Key words: Grape seeds, Aqueous solution, Cr6+, Adsorption.

How to cite this article: Zazouli M.A, Ghorbanpour R. The Efficiency of Grape Seeds in Removal of Hexavalent Chromium from Aqueous Solutions. J Rafsanjan Univ Med Sci 2017; 15(10): 1039-48. [Farsi]

Full-Text [PDF 236 kb]   (1137 Downloads) |   |   Full-Text (HTML)  (1069 Views)  
Type of Study: Applicable | Subject: Environmental Health
Received: 2016/09/5 | Accepted: 2017/01/16 | Published: 2017/02/18

Add your comments about this article : Your username or Email:

Send email to the article author

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2021 CC BY-NC 4.0 | Journal of Rafsanjan University of Medical Sciences

Designed & Developed by : Yektaweb