Jute (Corchorus olitorius) stick charcoal: a potential bioadsorbent for the removal of Cr(VI) from an aqueous solution

Abstract

This study investigated the performance of jute stick charcoal (JSC) as a biosorbent for the removal of hexavalent chromium [Cr(VI)] from an aqueous solution. The batch adsorption experiment was conducted by influencing various experimental conditions like contact time (5–240 min), pH (2–8), initial Cr(VI) concentration (10–100 mg/L), and JSC dose (2–10 g/L). The study result shows that maximum Cr(VI) removal (99%) was found at pH 2, 20 mg/L of initial Cr(VI) concentration, 8 g/L of the JSC dose, and 150 min of equilibrium contact time. Fourier transform infrared (FTIR) spectroscopy and field emission scanning electron microscope (FE-SEM) were used to characterize the JSC surface characteristics. The Cr(VI) adsorption data of JSC were better described by the Freundlich (R2= 0.995) and Halsey (R2= 0.995) isotherm models. The maximum monolayer adsorption capacity of JSC was 11.429 mg/g. Kinetic adsorption data of JSC followed the pseudo-second-order model (R2=1.0) as compared with the pseudo-first-order model (R2=0.97) and this adsorption process was controlled by chemisorption with multi-step diffusion. Finally, this study revealed JSC as an effective adsorbent for Cr(VI) removal from an aqueous solution.

Receptor model-based sources and risks appraisal of potentially toxic elements in the urban soils of Bangladesh

“…plating, anti-corrosion treatment by-products, etc. [53] , [54] . For Cu, about 66 % and 19 % of samples exceeded TRV and ASQS, respectively.…”

Removal of hazardous textile dye from simulated wastewater by municipal organic solid waste charcoal using machine learning approaches: Kinetics, isotherm, and thermodynamics

“…While the adsorption rate of MO gradually rises (40–67 mg/g) with rising MO dye concentration (60–140 mg/L) at constant MOWSC dose (1 g/L) ( Fig. 2 c), for the higher association between MO molecules and MOSWC that improved the major dynamic potency to shift a high mass of MO between the liquid to the solid phase in an aqueous environment [ 19 , 49 ].…”

“…The negative ΔG 0 value at 298 K indicates the suitable and practical so, it was selected for further experiments ( Fig. 8 a) [ 49 ] The positive ΔG 0 values for 323 and 333 K suggest thermodynamically unsuitable, a related result stated by Tay et al [ 53 ].…”

Black carbon derived PET plastic bottle waste and rice straw for sorption of Acid Red 27 dye: Machine learning approaches, kinetics, isotherm and thermodynamic studies

“…There are numerous treatment approaches exist for the elimination of dyes from polluted water, such as UV and ozonation, coagulation and flocculation, chemical oxidation processes, membrane separation, reverse osmosis, ion exchange, and photolysis [ 12 – 17 ]. Furthermore, several treatment methods are either costly or have several drawbacks [ 18 ]. Barakat [ 19 ] has extensively explored the benefits and limitations of various treatment methods.…”

“…Adsorption is mostly using effluent treatment techniques for ease of operation and design, cost-effectiveness, greater performance, source availability, lower sludge, flexibility, and insensitivity to hazardous elements [ 1 , 8 ]. The usability of marketable activated carbon is reducing due to high cost [ 18 ]. In this favour, many wastes and biomaterials were used as adsorbents for both inorganic and organic pollutants, broadly reviewed by Bhattacharjee et al [ 20 ].…”