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:: Volume 1, Issue 1 (winter 2016) ::
3 2016, 1(1): 41-49 Back to browse issues page
Raw and Modified Rice Husk Performance in Removal of Basic Blue 41 from Aqueous Solutions
H Faraji , S Mazloomi , F Mohammadi , E Ahmadi , HR Soheil Arezoomand
Abstract:   (1641 Views)

Background & objectives: Textile effluents contain significant amounts of toxic and organic pollutants. Due to their carcinogenic and mutagenic properties, discharge of this kind wastewater to water resources can associate with health impacts. The aim of this study was to survey the efficiency of raw and modified rice husk in removal of basic blue 41 dyes from aqueous solutions.

Methods: In this study the influence of different parameters including contact time, initial dye concentration, adsorbent concentration, and PH, were studied. Residual dye concentrations were measured at 517 nm using a spectrophotometer. Adsorption data were described by Langmuir and Freundlich isotherms and kinetic reactions.

Results: The results showed that increasing contact time and adsorbent dose to increase dye removal rates for both raw and modified adsorbents. Dye removal rates increased by decreasing initial concentration of the dye. In optimal conditions, raw and modified husk removed 75 and 94 percents of the dye, respectively. Optimum pH was obtained 10 for both adsorbents. According to the results, adsorption process for both adsorbent followed Freundlich isotherm (R2>0.98). Dye absorption kinetic of both adsorbents followed pseudo second degree (R2>0.98).

Conclusion: The results showed that rice husk can be applied as an efficient adsorbent for removal of basic blue 41 dye from aqueous solutions.

Keywords: Basic Blue 41 Dye, Adsorption, Rice Husk, Adsorption Isotherm.
Full-Text [PDF 163 kb]   (645 Downloads)    
Type of Study: Research | Subject: General
Received: 2015/12/27 | Accepted: 2015/12/27 | Published: 2015/12/27
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Faraji H, Mazloomi S, Mohammadi F, Ahmadi E, Soheil Arezoomand H. Raw and Modified Rice Husk Performance in Removal of Basic Blue 41 from Aqueous Solutions. 3. 2016; 1 (1) :41-49
URL: http://oeh.arums.ac.ir/article-1-36-en.html

Volume 1, Issue 1 (winter 2016) Back to browse issues page
فصلنامه سلامت محیط و کار Occupational and Environmental Health
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