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Removal of Congo red from aqueous solutions using nano-Chitosan | ||
| Environmental Resources Research | ||
| مقاله 3، دوره 5، شماره 1، فروردین 2017، صفحه 25-34 اصل مقاله (636.81 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22069/ijerr.2017.11962.1172 | ||
| نویسندگان | ||
| Hassan Rezaei* 1؛ Asiyeh Razavi2؛ Ali Shahbazi3 | ||
| 1Gorgan Uni. | ||
| 2. M.Sc. student of Environmental Sciences, Baharan Institute of Higher Education, Gorgan, Iran | ||
| 3Head Department Environmental Sciences, Baharan Institute of Higher Education, Gorgan, Iran | ||
| چکیده | ||
| It is now recognized that adsorption using low-cost adsorbents is an effective and economic method for water decontamination. Chitosan is derived by deacetylation of the naturally occurring biopolymer chitin which is the second most abundant polysaccharide in the world after cellulose. In this study, the capacity of the chitosan nanoparticles was studied for the removal of the anionic Congo red from wastewater. The effect of various parameters, such as the initial pH value in range of (2-4), initial dye concentration (3-50 mg/L), adsorbent dosage (0.1-1.5 g), contact time (5-40 min) and temperature (20-45 C°) on adsorption process was investigated. The results indicated that chitosan nanoparticles under optimal conditions (pH=7, 5 mg/L-1 concentration of adsorbent, contact time of 15 minutes and a temperature of 30 ° C) is able to remove 99.96% of Congo red from aqueous solutions. Hence, nano-chitosan can be used as an eco-friendly adsorbent for the removal of Congo red from wastewater in terms of lower optimum time and higher adsorption capacity. | ||
| کلیدواژهها | ||
| Congo red؛ Adsorption؛ Wastewater؛ Chitosan | ||
| مراجع | ||
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