Computation of adsorption parameters for the removal of dye from wastewater by microwave assisted sawdust: Theoretical and experimental analysis

Suganya, S.; Kumar, Pramod; Saravanan, A.; Rajan, P Sundar; Ravikumar, C.R.

doi:10.1016/j.etap.2017.01.014

Cited by 97 publications

(11 citation statements)

References 43 publications

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“…In this direction, the literature includes the use of adsorbents, such as rice husk, feldspar, bagase fly ash, neem sawdust, chitosan, peat, corncob activated carbon and cashew nutshell in their natural or modified forms [5][6][7][8][9][10][11][12]. Further, in order to improve the removal characteristics of the adsorbent, different complex modifications reported in the literature includes, sulfuric acid-treated orange peel, surface modified tamarind seeds, surface modified Strychnos potatorum seeds, ultrasonic modified corn pith, synthesized chitosan and microwave-assisted sawdust [13][14][15][16][17][18]. Further, much research has been conducted on dye removal by raw and modified clay varieties [19][20][21].…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Removal of textile dyes from industrial effluents using burnt brick pieces: adsorption isotherms, kinetics and desorption

2020

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Textile dyes, namely Sumifix Blue Exf (Dye 1), Sumifix Rubine Exf (Dye 2) and Sumifix Yellow Exf (Dye 3), show their characteristic λ max values at 605 nm, 545 nm and 415 nm, respectively. Gel electrophoresis of the three individual dyes investigated indicates that all of them are negatively charged. Among different adsorbents, brick clay shows the highest efficiency for the removal of dyes from aqueous solution. The optimum values of experimental parameters, namely treatment temperature, adsorbent dosage, shaking time, settling time and initial solution pH determined to be 200 °C, 4.0 g, 15.0 min, 15.0 min and pH < 10, respectively. The Langmuir model is the best-fitted one for the experimental adsorption data of the dyes leading to the highest removal ability under optimized conditions as 1667 mg kg −1 , 3333 mg kg −1 and 2500 mg kg −1 for Dye 1, Dye 2 and Dye 3, respectively. All three dyes follow pseudo-second-order kinetics for their adsorption describing initial rate of adsorption in the order, Dye 1 ≈ Dye 2 (10,000 mg kg −1 min −1) > Dye 3 (3333 mg kg −1 min −1), and further, real dye effluent containing each of the above dyes having calculated initial concentrations of 42 mg L −1 (Dye 1), 106 mg L −1 (Dye 2) and 39 mg L −1 (Dye 3), shows, 87%, 86% and 45% removal efficiencies at their λ max values with the treatment of burnt brick clay particles under optimized conditions. Desorption of the dyes from the dye-adsorbed adsorbent indicates that desorption prefers basic conditions.

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Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Removal of textile dyes from industrial effluents using burnt brick pieces: adsorption isotherms, kinetics and desorption

2020

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“…Dyes in the dyeing wastewater could be reused by adsorption and desorption [6]. In recent years, some new synthetic adsorbents and bio-adsorbents originated from agriculture and food industry waste for the removal of dyes wastewater was found and have attracted a lot of attention, such as Amberlite IRA-938 resin [7], starch/poly(alginic acid- cl -acrylamide) nanohydrogel [8], orange peel, sawdust, rice husk and spent substrate of Ganodorma lucidum [9,10,11,12]. Basic dyes are one of the major categories of dyes, and are suitable for dyeing of acrylic fibers, terylene, nylon, cellulose and protein fiber.…”

Section: Introductionmentioning

confidence: 99%

Adsorption Thermodynamics and Dynamics of Three Typical Dyes onto Bio-adsorbent Spent Substrate of Pleurotus eryngii

Xia

Chen

et al. 2019

IJERPH

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Dyeing wastewater is very hard to treat, and adsorption could be a good choice. Spent substrate of Pleurotus eryngii (SSPE) was first used to adsorb malachite green, safranine T and methylene blue from aqueous solutions, and the corresponding adsorption isotherm, thermodynamics and dynamics models were simulated. More than 93% of the dyes were removed with solutions with 100 mg/L of initial dye concentration, 1 g of SSPE and pH of 6.0 after adsorption for 4 h. Freundlich isotherm models fit better the adsorption data than Langmuir models. Adsorption of the dyes onto SSPE was a spontaneous exothermic process based on an adsorption thermodynamics model. SSPE could adsorb the dyes rapidly, and a second-order kinetics model fit better with the adsorption data than a pseudo first-order kinetics model. Accordingly, SSPE could be a good bio-adsorbent for the removal of malachite green, safranine T and methylene blue from the aqueous solution.

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“…Adsorption isotherm models have been widely used in correlating the equilibrium adsorption data to describe the nature behavior of the adsorption process and investigating the adsorption mechanisms, which are essential in designing an optimized adsorption system 41,42 . In this study, four isotherm models, namely Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich (D–R) models were scrutinized to analyze the fitness of the equilibrium data obtained from the experiment at different initial MB concentrations.…”

Section: Resultsmentioning

confidence: 99%

Facial synthesis of colloidal stable magnetic nanoparticles coated with high hydrophilic negative charged poly(4‐styrenesulfonic acid co‐maleic acid) sodium for water remediation

Lim

Hoo

et al. 2023

Polymers for Advanced Techs

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The enhancement of the colloidal stability of magnetite nanoparticles (MNPs) for environmental-related fields has greatly attracted researchers' attention. This study used a high hydrophilic negatively charged polyelectrolyte, poly(4-styrenesulfonic acid co-maleic acid) sodium (PSAAS), to enhance the colloidal stability of MNPs.Coating of the naked MNPs with PSAAS polyelectrolyte is a simple and rapid method to obtain colloidally stable MNPs while sustaining the chemical reactivity of MNPs in water purification. The prepared PSAAS-coated MNPs were characterized by scanning electron microscope, energy dispersive X-ray, Fourier transform infrared, zeta potential analysis, transmission electron microscope and X-ray diffraction. Moreover, the colloidal stability and adsorption performance tests of these naked MNPs and PSAAS-coated MNPs (with different concentrations of PSAAS coated) were investigated and compared. PSAAS-coated MNPs with 0.001 g/ml PSAAS coating possessed the best colloidal stability and the highest methylene blue (MB) dye removal efficiency (94.53 ± 0.69%). The adsorption isotherm and kinetic studies for the adsorption of MB onto PSAAS-coated MNPs were well-described by the Langmuir model and pseudo-second-order kinetic model. These magnetic adsorbents, with high separation efficiency, simple and low production cost and recyclable property, are promising as practicable adsorbents in water treatment.

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Computation of adsorption parameters for the removal of dye from wastewater by microwave assisted sawdust: Theoretical and experimental analysis

Cited by 97 publications

References 43 publications

Removal of textile dyes from industrial effluents using burnt brick pieces: adsorption isotherms, kinetics and desorption

Removal of textile dyes from industrial effluents using burnt brick pieces: adsorption isotherms, kinetics and desorption

Adsorption Thermodynamics and Dynamics of Three Typical Dyes onto Bio-adsorbent Spent Substrate of Pleurotus eryngii

Facial synthesis of colloidal stable magnetic nanoparticles coated with high hydrophilic negative charged poly(4‐styrenesulfonic acid co‐maleic acid) sodium for water remediation

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