Preparation and characterization of Chicory leaf powder and its application as a nano-native plant sorbent for removal of Acid Blue 25 from aqueous media: isotherm, kinetic and thermodynamic study of the adsorption phenomenon

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.

Adsorption of Cr(VI), Ni(II), Fe(II) and Cd(II) ions by KIAgNPs decorated MWCNTs in a batch and fixed bed process

“…3 c revealed that the pH point of zero charge (pH PZC ) of MWCNTs-KIAgNPs was obtained as 6. This indicates that the surface of MWCNTs-KIAgNPs was positively charged at pH PZC < 6, while the adsorbent surface was negatively charged at pH PZC > 6 15 . In all, pH 6 was selected for further investigation of Cd(II), Ni(II) and Fe(II) adsorption, while pH 3 was utilized for Cr(VI) adsorption due to its optimal adsorption values for all the metal ions without precipitation to metal hydroxides 59 .…”

“…However, these techniques possess different limitations such as low efficiency, high cost, generation of toxic byproducts, delay in operation, inefficiency in targeting specific pollutants and complexity of treatment methods 12 . Of these techniques, adsorption technology has been identified as one of the most efficient and commonly used treatment method due to its ease of operation control, regeneration potentials, cost efficient, inertness to materials, lack of sludge formation and variety of adsorbents 13 – 15 . In recent years, nanomaterials have attracted the attention of researchers due to their unique physicochemical properties attributable to their small size, shape, dimensions, large surface area, crystallinity and composition 16 .…”

Application of Pistacia atlantica Leaves Powder as Natural Material To Remove Nitrate and Phosphate Ions From Domestic Wastewater by Characterization, Bio-removal, and Phytotoxicity Studies

“…This is consistent with several studies that indicated a decrease in the specific surface area and pore size of plant powder that was not treated physically or chemically. The specific surface area ranged between 0.48-10.9 m 2 / g (25,26,27,28,29), and the total pore size ranged between 0.0002-0.11 cm 3 /g (30,31,32,33,34), and the average pore diameter of Pistacia vera shell powder was 0.77 nm (30) and Prunus dulcis leaves 3.713 nm (33) and Arundo donaxn plant 4.320 nm (18).…”

Contemporary Insights on Antibacterial and Pharmacological Importance of Cichorium intybus: A Compendious Review

“…Chicory is also a widely accepted 'medicinal herb' and many communities know its medicinal uses. It is majorly grown in Europe, North America, Asia, some parts of Africa and Egypt, Iran and other regions of the globe [13][14][15]. In Asia and Europe, various preparation of chicory is helpful to cure wide level of diseases including the healing of wound and diabetes, and in Chile, it is consumed as 'winter vegetable' [16].…”