Model-fitting approach for methylene blue dye adsorption on <i>Camelina</i> and <i>Sapindus</i> seeds-derived adsorbents

Sharma, Sunanda; Tiwari, D. P.; Pant, KK

doi:10.1177/0263617416674949

Cited by 17 publications

(9 citation statements)

References 47 publications

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“…Thus, it can be concluded from both Langmuir and D-R models that the adsorption mechanism of MB dye molecules on the porous WNS surface was due to the chemical adsorption. The reasonable maximum adsorption capacity (q m ) of WNS for MB was found to be 36.632 mg/g, which comes out to be superior in comparison to some biomass-based adsorbents like sugarcane bagasse 48 , and Sapindus seeds 49 which have the q e of 17.434 and 4.610 mg/g, respectively. www.nature.com/scientificreports www.nature.com/scientificreports/ Kinetics.…”

Section: Effect Of Contact Time and Initial Concentrationmentioning

confidence: 91%

Walnut shell powder as a low-cost adsorbent for methylene blue dye: isotherm, kinetics, thermodynamic, desorption and response surface methodology examinations

Uddin

Nasar

2020

Sci Rep

137

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the low cost, eco-friendly and potential biomass, i.e. walnut (Juglans regia) shell powder was deployed for the removal of toxic methylene blue dye from contaminated water solution. the important characterization of the waste material was conducted by using several techniques, i.e. Scanning electron microscope, fourier-transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, X-ray powder diffraction, Brunauer-Emmett-Teller surface area analysis, and Thermogravimetric analysis. the marked impact of various operating conditions, i.e. dose, concentration, time, pH and temperature on the adsorption process was investigated. increasing pH resulted in an increase of percent dye adsorption, and the adsorption mechanism was occurred by electrostatic attraction between negative adsorbent surface and positive dye molecules. the equilibrium data suited with Langmuir isotherm model while the adsorption practice followed the pseudo-second-order kinetic model. Higher temperature reduced the adsorption of dye molecules. the adsorption process was spontaneous, exothermic and chemical. the critical statistical analysis of the experimental results was directed by forming the design of the experiment, which was further, optimized by ANOVA, 3D and perturbation plots. the error and predicted values of both the studied responses as derived from the statistical model showed the agreeable results. 0.1 N HCl was found to be effective in complete desorption. The results are very practical and prove the effectiveness of walnut shell powder in the usage of decolorization for methylene blue.

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Section: Effect Of Contact Time and Initial Concentrationmentioning

confidence: 91%

Walnut shell powder as a low-cost adsorbent for methylene blue dye: isotherm, kinetics, thermodynamic, desorption and response surface methodology examinations

Uddin

Nasar

2020

Sci Rep

137

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“…Numerous renewable materials from agricultural products and by-products have been used as adsorbents for dyes and heavy metals removal from aqueous media by many researchers [3][4][5]. In the past few decades, researchers have used the agricultural wastes such as linen [6], walnut shell [7], mustard cake [8], rice straw [9], and a combination of rice husk, ground nutshell, and soya beans waste [10] as adsorbents for heavy metals and dyes removal from aqueous solution. However, most of the reported bioadsorbents exhibited the limitation of adsorption capacity and slow adsorption rate.…”

Section: Introductionmentioning

confidence: 99%

Hierarchically 3-D Porous Structure of Silk Fibroin-Based Biocomposite Adsorbent for Water Pollutant Removal

et al. 2021

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This study explored the tunability of a 3-D porous network in a freeze-dried silk fibroin/soursop seed (SF:SS) polymer composite bioadsorbent. Morphological, physical, electronic, and thermal properties were assessed using scanning electron microscopy, the BET N2 adsorption-desorption test, Fourier transform infrared (FTIR) spectroscopy, and thermogravimetric analysis (TGA). A control mechanism of pore opening–closing by tuning the SS fraction in SF:SS composite was found. The porous formation is apparently due to the amount of phytic acid as a natural cross-linker in SS. The result reveals that a large pore radius is formed using only 20% wt of SS in the composite, i.e., SF:SS (4:1), and the fibrous network closes the pore when the SS fraction increases up to 50%, i.e., SF:SS (1:1). The SF:SS (4:1) with the best physical and thermal properties shows an average pore diameter of 39.19 nm, specific surface area of 19.47 m2·g−1, and thermal stability up to ~450 °C. The removal of the organic molecule and the heavy metal was assessed using crystal violet (CV) dye and the Cu2+ adsorption test, respectively. The adsorption isotherm of both CV and Cu2+ on SF:SS (4:1) follows the Freundlich model, and the adsorption kinetic of CV follows the pseudo-first-order model. The adsorption test indicates that physisorption dominates the adsorption of either CV or Cu2+ on the SF:SS composites.

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“…shows the experimental equilibrium curves obtained by plotting the retained amount (qe) [eq. (2)] vs. the equilibrium concentration (Ce)[31]:…”

mentioning

confidence: 99%

Cotton Industry Waste as Adsorbent for Methylene Blue

Tenev¹,

Farías²,

Torre³

et al. 2019

J. sustain. dev. energy water environ. syst.

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Removing dyes used in the textile industry from the water bodies is a relevant task because of the importance of their high toxicity. The cotton industry waste is a big problem in the final disposal. Waste cotton fibrils were studied as adsorbent material to treat the coloured effluents of the textile industry. Washing with boiling water was determined as the most efficient method for cleaning. The material was physical characterized. After that, methylene blue adsorption tests were carried out to review the dry removal process at different pH. The Langmuir isotherm and the pseudo-second kinetic order models best described this adsorption process. The results would indicate that the process involve a chemisorptions.

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Model-fitting approach for methylene blue dye adsorption on Camelina and Sapindus seeds-derived adsorbents

Cited by 17 publications

References 47 publications

Walnut shell powder as a low-cost adsorbent for methylene blue dye: isotherm, kinetics, thermodynamic, desorption and response surface methodology examinations

Walnut shell powder as a low-cost adsorbent for methylene blue dye: isotherm, kinetics, thermodynamic, desorption and response surface methodology examinations

Hierarchically 3-D Porous Structure of Silk Fibroin-Based Biocomposite Adsorbent for Water Pollutant Removal

Cotton Industry Waste as Adsorbent for Methylene Blue

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