Removal of Congo red from aqueous solutions using nano-Chitosan
Publish place: Environmental Resources Research، Vol: 5، Issue: 1
Publish Year: 1396
Type: Journal paper
Language: English
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Document National Code:
JR_IJERR-5-1_003
Index date: 9 October 2019
Removal of Congo red from aqueous solutions using nano-Chitosan abstract
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.
Removal of Congo red from aqueous solutions using nano-Chitosan Keywords:
Removal of Congo red from aqueous solutions using nano-Chitosan authors
Hassan Rezaei
Gorgan Uni.
Asiyeh Razavi
. M.Sc. student of Environmental Sciences, Baharan Institute of Higher Education, Gorgan, Iran
Ali Shahbazi
Head Department Environmental Sciences, Baharan Institute of Higher Education, Gorgan, Iran
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