Repository of Research and Investigative Information

Repository of Research and Investigative Information

Kurdistan University of Medical Sciences

The application of a natural chitosan/bone char composite in adsorbing textile dyes from water

(2017) The application of a natural chitosan/bone char composite in adsorbing textile dyes from water. Chemical Engineering Communications.

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Colored wastewaters are one of the common waste contaminants which are derived from various industries, threatening aquatic environments. Thus, it is necessary to treat them before discharge. Among various remediation technologies, adsorption is one of the popular treatment methods because of its simplicity and cost-efficiency. So, in the present study, the adsorption potential of a natural chitosan/bone char composite was investigated in adsorbing the Direct Brown 166 dye (DB-166) from aqueous solution. To investigate the adsorption potential of the chitosan/bone char composite, the effects of influencing parameters were studied. Accordingly, the optimum removal efficiency was determined at an initial pH of 3, a contact time of 60 min, an initial dye concentration of 20 mg/L, an adsorbent dosage of threatening 4 g, a mixing speed of 150 rpm, and a temperature of 55°C. Also, the maximum adsorption efficiency and capacity were obtained to be 99.8 and 21.18 mg/g, respectively. To evaluate the equilibrium and dynamics, isotherm and kinetic models were investigated. As a result, the Langmuir isotherm (R2 = 0.996) and pseudo-second-order kinetic model (R2 = 0.999) fitted the experimental data well. These results revealed that the chitosan/bone char composite can be used as an efficient adsorbent for the decolorization of aquatic solutions. © 2017 Taylor & Francis.

Item Type: Article
Keywords: Adsorption; Adsorption isotherms; Composite materials; Efficiency; Isotherms; Kinetic parameters; Kinetic theory; Remediation; Solutions; Textiles, Adsorption efficiency; Adsorption potential; Bone char; Direct Brown166; Influencing parameters; Initial dye concentration; Pseudo-second-order kinetic models; Remediation technologies, Dyes
Page Range: pp. 1082-1093
Journal or Publication Title: Chemical Engineering Communications
Volume: 204
Number: 9
Publisher: Taylor and Francis Ltd.
Identification Number: 10.1080/00986445.2017.1340274
ISSN: 00986445
Depositing User: مهندس مهدی شریفی

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