Removal of textile dyes from water by jute stick activated carbon: process optimization and isotherm studies

Abstract

In this study, jute stick derived activated carbon (JSAC) has been evaluated as an adsorbent to remove textile dyes namely acid red-1 (AR-1), reactive orange-16 (RO-16), and methylene blue (MB) from water using the Box-Behnken model of response surface methodology (RSM). The direct and interaction effects of four independent process parameters namely solution pH, initial dye concentration, adsorbent dose, and time were investigated and optimized for textile dye by using ANOVA. The optimum conditions for maximum % dye removal were found to be pH-3, initial dye concentration-500 mg L −1 , adsorbent dose-0.9 gL −1 , and time-110 min for AR-1; pH-3, initial dye concentration-350 mg L −1 , adsorbent dose-1.5 g L −1 , and time-110 min for RO-16, and pH-11, initial dye concentration-415 mg L −1 , adsorbent dose-0.7 g L −1 , and time-86 min for MB, respectively. Adsorption equilibrium investigations were carried out with Langmuir, Freundlich, and Jovanovic models. Based on error analysis, Langmuir isotherm was found the best-fitted model with maximum adsorption capacities of 588.2, 156.3, and 384.6 mg g −1 for AR-1, RO-16, and MB, respectively. The dimensionless factor, R L values (range: 0.0152-0.2665) also indicated spontaneous and favorable adsorption of studied dyes onto JSAC. Dye loaded adsorbents were easily regenerated with 0.1 M HCl (for MB) and 0.1 M NaOH (for AR-1/RO-16) and reused up to the 4th cycle. The present investigation indicated that JSAC, with a highly porous and stable structure coupled with various functional groups, holds immense potential as a new adsorbent for textile dyes.

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

“…Other peaks at JSC 1,377.17 cm À1 (C-N stretching vibration or amine), 1,273.02 cm À1 (vibrations of C-O stretching in alcohols), 987.55 cm À1 (C ¼ C stretching vibration), 844.82 cm À1 (C-H stretching vibration) were observed. Similar types of IR spectrum and functional groups were found by several authors (Chakraborty et al 2020;Ghosh et al 2021aGhosh et al , 2021b. The presence of a porous and uneven surface was indicated by using SEM analysis, which might have played a substantial role in providing high surface area and huge space for active sites (Figure 2).…”

A Cellulose‐Based Adsorbent using Box‐Behnken Design for the Adsorption of Reactive Blue 19 Dye from Simulated Wastewater

“…After each reaction, samples were centrifuged at 6000 rpm, and the concentration of residual dye present in the samples was determined by separating the supernatant and evaluating it using a UV-visible spectrophotometer at a wavelength of 594 nm by equation ( 4). [46] RB19 dye removal ð%Þ ¼…”

“…In this study, The F-value of the model is 54.65 which implies that the model for RB19 dye removal is significant. [5,46,47] Also, the adsorbent dosage had the majority significant effect with an F value of 626.69 followed by concentration (94.87), temperature (47.4), time (27.4), and pH (9.16).…”

Jute stick derived self-regenerating sustainable solar evaporators with different salt mitigation mechanisms for highly efficient solar desalination

“…Research shows that the JS-activated carbon can be a solution to remove textile dyes (acid red-1, reactive orange-16, and methylene blue) from water by the adsorption process. 29 M. A. Aziz et al demonstrated that the carboxylated activated carbon from JS can be used to remove Pb 2+ ion from the aqueous solution. 30 G. C. Panda et al demonstrated that JS powder is a promising material for the adsorptive removal of Congo red and Rhodamine B from aqueous solutions.…”

“…29 M. A. Aziz et al demonstrated that the carboxylated activated carbon from JS can be used to remove Pb 2+ ion from the aqueous solution. 30 G. C. Panda et al demonstrated that JS powder is a promising material for the adsorptive removal of Congo red and Rhodamine B from aqueous solutions.…”