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Barikbin B, Alikhanian A. Investigation removal of hexavalent chromium from aqueous solution by functionalized carbon derived from rice husk. J Birjand Univ Med Sci.. 2017; 24
URL: http://journal.bums.ac.ir/article-1-2224-en.html

1- Associate Professor Social Determinants of Health Research Center, Birjand University of Medical Sciences, Birjand, Iran. , B_Barikbin@yahoo.com
2- Environmental Health Engineering master student Member of the Student Research Committee, Birjand University of Medical Sciences, Birjand, Iran.
Abstract:   (619 Views)

Hexavalent chromium is a metal, which causes harmful effects in surface and ground water, Its removal from contaminated water and waste water has received a great deal of interest in recent years. Thus, the aim of the present study was a comparative analysis of the evaluate the absorption of heavy metal hexavalent chromium in aquatic environments using functionalized carbon produced from rice husk as an adsorbent cheap price.

In this experimental study, the effects of variables such as pH (2-10) of adsorbent dose (5-20 g/l), initial chromium concentration (5-20 mg/l), contact time (5-60 min), temperature (1-40c0), and its resultant on removing of chromium from aqueous solutions functionalized carbon derived from rice husk were investigated. Experiments were intermittently performed in batch reactor on Shaker. The result of adsorption equilibrium was analyzed to Langmuir isotherm model. Finally, in order to assess the obtained samples colorimetric method using UV/V Spectrophotometer T80+ set, at a wavelength of 540, was applied and analyzed were by Excel software.

The most efficient removal of hexavalent chromium occurred when pH was 2 and optimal dose 10 g / l respectively. Also the initial hexavalent chromium density from 5 to 20 mg/lit led to the removal percentage from 97/3 to 85/7%,respectively.other results show that with increasing contact time and mixing speed, removal efficiency increase.

functionalized carbon derived from rice husk with a maximum efficiency of 97% is very effective methods for the removal of hexavalent chromium from aqueous solutions.

     
Type of Study: Short Communication | Subject: Environmental Health
Received: 2017/01/6 | Accepted: 2017/02/6 | Published: 2017/05/24

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