Optimization of process parameters for methylene blue removal by jute stick using response surface methodology

Abstract

In this study, jute stick (JS), the underexplored by‐product of jute (Corchorus olitorius) cultivation system, has been used as a novel low‐cost adsorbent to remove methylene blue (MB), a cationic dye, from an aqueous medium. Box–Behnken design matrix and response surface methodology (RSM) have been used to evaluate the effect of four important process factors namely, solution pH (3–11), adsorbent dose (0.5–5 g L−1), initial dye concentration (50–200 mg L−1), and time (60–180 min). JS was characterized by physico‐chemical parameters, pHzpc (zero‐point charge), FTIR for the functional groups and SEM–EDX for surface morphology. The direct and interaction effects of adsorption parameters were studied. The optimum values of pH, dose, initial concentration, and time for maximum % dye removal were 10.27, 5 (g L−1), 200 (mg L−1), and 66.06 min. Regeneration and recycling studies were also carried out. The present study indicated that JS, a bio‐waste of jute cultivation system, can be effectively utilized as an adsorbent to treat MB contaminated aqueous medium/ wastewater before environmental disposal. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019

Ultrasonic treatment of textile dye effluent utilizing microwave‐assisted activated carbon

“…The powdered activated carbon available commercially has been implemented by many researchers in literature. 2 Cost is the most important factor for selection of technology to be implemented for treatment. 48 The adsorption technique is based on the selection of potentially suitable adsorbent.…”

“…Typically, dyes have been utilized in every chemical sector ranging from pilot plants to large-scale industries and this sector consumes potentially huge water volume. 1,2 The dye effluent producing units predominates in present scenario due to their wider applications in field of textile, paper, printing, academic institutions, small-scale pilot plants, and so forth. They may be organic or inorganic pollutants retained in the effluent stream.…”

“…There have been several technologies for dye effluent treatment secluded by researchers having their own pros and cons. 2,8 Reverse osmosis membrane technique has been effectively adopted for treatment of huge amount of dye effluent stream from textile industries. 9 RO reject emerging out of textile industries consists of high concentration of dye in reject treatment, which needs further treatment before disposal.…”

Adsorption of crystal violet dye by agricultural rice bran waste: Isotherms, kinetics, modeling and influencing factors

“…The aim of using RSM is to concurrently optimize influential parameters in the adsorption process to find the best efficiency. The most important advantage of this methodology is reducing the number of experiments and preserving materials, energy, and time [37,38]. RSM consists of statistical and mathematical techniques, which leads to a comprehensive analysis of the correlation between effective factors [25].…”

“…Where x i and x j indicates are the independent variables as coded levels, Y is the response, b ij , b ii , b i , and b 0 are the interaction, quadratic, linear, and intercept coefficients, respectively, and n is the number of independent variables [38]. The reliability of the fitted model and the statistical significance were evaluated by the correlation coefficient R 2 , analysis of variance (ANOVA), and P-value.…”