Abstract
In this study, the Chicory leaf powder (CLP) was used as a native adsorbent to eliminate the Acid Blue 25 dye from aqueous media. The prepared native adsorbent was characterized by several techniques including the X-ray powder diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform spectroscopy (FTIR), Brunauer–Emmet–Teller essay (BET), and particle size analyzer (PSA). A collection of experiments was performed to distinguish the optimal conditions and to probe the effects of the different parameters such as initial concentration, contact time, adsorbent dosage, pH of solution, and temperature on the sorbent capacity. The attained optimal conditions for removal the Acid Blue 25 dye were pH = 3–4, contact time 50 min, dosage 0.1 g, and initial concentrations 10 (mg/L) at 30 °C. The adsorption data revealed that the adsorption procedure has more match with the Langmuir isotherm than others. The kinetic data were better fitted with the pseudo-second-order pattern with a trusty correlation coefficient. Finally, the thermodynamic parameters illustrated that the adsorption process is exothermal and spontaneous. Based on magnitude of the standard enthalpy change related to the studied adsorption, we may derive that the considered adsorption is physical adsorption.
Highlights
Toxicity of dye compounds has been a major problem of human for several years [1]
The chemical combination of Chicory leaf powder (CLP) was determined by other researchers [16, 17]
The effect of temperature on the sorption of Acid Blue 25 onto CLP was tested at 25 °C, 30 °C, 40 °C, and 50 °C, while the other parameters including the initial concentration, contact time, and solution pH were 30 mg/L, 30 min and normal pH, respectively
Summary
Toxicity of dye compounds has been a major problem of human for several years [1]. Dyes are contaminants which are widely consumed in industrial operations such as textile, wood manufacturing, paper mills, and leather. A number of applied sciences have been developed over years for eliminating dye pollutants from aqueous solutions [2,3,4], as dyes are significant environmental pollutants and destroy natural eco-systems in particular One of these methods is the adsorption process. The original target of the study is to test the adsorption treatment of Chicory savage powder as adsorbent with respect to Acid Blue 25 [19]. The effects of different agents, such as initial concentrations of solution, contact time; pH values, adsorbent dosage, and temperature were investigated. It should be noted that, several parameters including initial concentration of sorbate, pH solution, dosage of sorbent, temperature, contact time and some other conditions affect seriously the adsorption capacity of any adsorption process. Determination of the optimum value of each mentioned parameter must firstly evaluate a discussed
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