Activated carbon blended with grape stalks powder: Properties modification and its application in a dye adsorption

Davarnejad, Reza; Afshar, Saeedeh; Etehadfar, Parisa

doi:10.1016/j.arabjc.2020.03.025

Cited by 50 publications

(15 citation statements)

References 52 publications

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“…The highest proportional dye removal was achieved at low initial dye concentration and high adsorbent dose, and the optimal result was 90.7% dye removal efficiency at a bit more than 15 mg/L initial dye concentration and 2.9 g/L blended adsorbent dose. The adsorbent dose increase enhanced the availability of free active sites on the adsorbent surface (Saha et al 2012;Davarnejad et al 2020). This may occur because of the reduced ratio of active sites to dye molecules, so that there was insufficient vacant space on the adsorbent surface (Brahmi et al 2019).…”

Section: Effect Of Contact Time Vs Initial Concentrationmentioning

confidence: 99%

Bentonite blended with bagasse ash as an adsorbent for reactive red 198 dyes

Adane

Adugna

Alemayehu

2021

Water Practice and Technology

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Adsorption offers efficient, cost-effective, and eco-friendly method for the treatment of dye-laden wastewater. This work presents, reactive red 198 (RR198) removal by adsorption using bentonite clay (BC) blended with sugar cane bagasse ash (SCBA). The adsorbent's surface morphologies, crystalline phase structures, functional groups, and specific surface before and after adsorption were examined using SEM, XRD, FTIR, and BET respectively. Central composite design (CCD) under response surface methodology (RSM) was applied to optimize independent and dependent variable values. The optimal parameters for RR198 removal using the blended adsorbent were 107 minutes contact time, 0.934 g/L adsorbent dose, and 15 mg/L initial dye concentration, and 85.2% RR198 removal efficiency was achieved. The sorption isotherms and kinetics were evaluated using various existing models. The Freundlich isotherm model (R2 = 0.95) and the pseudo-second-order equation best described the adsorption parameters and the RR198 adsorption kinetic mechanism, respectively. Desorption and reusability experiments in batch study confirmed that BC blended with SCBA can be used multiple times for dye removal from wastewater.

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Section: Effect Of Contact Time Vs Initial Concentrationmentioning

confidence: 99%

Bentonite blended with bagasse ash as an adsorbent for reactive red 198 dyes

Adane

Adugna

Alemayehu

2021

Water Practice and Technology

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“…Biomass-derived porous carbon, which possesses a rich pore structure, large speci c surface area, and good adsorption performance, is obtained by heating biomass-based raw materials in the absence of air (Soliman et al, 2017;Daoud et al, 2019;Davarnejad et al, 2020).To promote energy conservation (Jiang et al, 2018), several types of agricultural and forestry waste have been utilized as raw materials for synthesizing porous carbon materials, which are widely used in elds such as gas-liquid adsorption, catalysts, and electrode materials (Chen et al, 2018;Saha et al, 2018;Vinayagam et al, 2018). Furthermore, using treated agricultural and forestry waste or biomass-derived porous carbon is one of the commo and e ective methods for removing all types of water pollutants via adsorption.…”

Section: Introductionmentioning

confidence: 99%

Chestnut-Shell-Derived Magnetic Porous Carbon for Removing Malachite Green Dye from Water

Chang

Zhang

Qin

et al. 2022

J. Chem. Eng. Japan

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A CoFe-based magnetic biomass-derived porous carbon was synthesized via a simple impregnation/calcination method by using chestnut shells as the raw material. The materials were characterized via powder X-ray di raction (XRD), scanning electron microscopy (SEM), and speci c surface area and zeta potential analyses. Further, the e ect of calcination temperature on the properties of the synthesized materials was investigated. The results indicated that the calcination temperature had a signi cant impact on the crystal form and morphology of the materials. The maximum adsorption capacity of the material calcinated at 600°C (CSCF-6) for malachite green (MG) was 69.93 mg/g (0.1916 mmol/g). Furthermore, the MG-adsorption e ciency of CSCF-6 was greater than 90% after repeated use for 7 times and the used CSCF-6 could be recycled easily by applying an external magnetic eld. The process of the adsorption of MG onto CSCF-6 could be described by the Langmuir adsorption isotherm model. Further, the results of the adsorption kinetics study showed that the adsorption process tted well with the pseudo-second-order kinetics model, indicating that the adsorption process was mainly controlled by chemical adsorption. Moreover, the results of the thermodynamic analysis indicated that the adsorption process was spontaneous and endothermic, and higher temperatures were conducive to the adsorption.

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“…This means that the wastewater containing dyes must be treated well and met the standards made by the authorities before being discharged. Therefore, researchers have also made several attempts to establish effective technologies for extracting dyes from industrial wastewater such as adsorption, electrochemical methods, ion exchange, coagulation-flocculation, photo-oxidation, floatation, and membrane filtration (Davarnejad et al 2020;Ebrahiem et al 2017;Jabar & Odusote 2020;Joseph et al 2020;Lai et al 2019;Liu et al 2019;Mahmood et al 2019;Nippatla & Philip 2019;Peng et al 2020). However, most of these technologies are limited by high cost and generation of hazardous materials (Davarnejad et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Preparation of Alpinia galangaStem Based Activated Carbon via Single-step Microwave Irradiation for Cationic Dye Removal

Ahammad¹,

Yusop²,

Din³

et al. 2021

JSM

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The focal point of this study is to synthesis Alpinia galanga Stem-based activated carbon (AGSAC) by using single-step microwave irradiation and testing it for the removal of cationic dye, methylene blue (MB) from aqueous solution. AGSAC was prepared under the flow of carbon dioxide (CO2) for the gasification effect. The factors of contact time (from 0 to 24 h) and initial concentration (25-300 mg/L) on the adsorption performance of AGSAC were studied. With the aid of response surface methodology (RSM) via face-centered composite design (FCD), optimum preparation conditions for AGSAC were found to be 400 W for radiation power and 4 min for activation time, respectively, which resulted in 95.67% of MB dye removal. The optimized AGSAC has a Bruneaur-Emmet-Teller (BET) surface area of 172.19 m2/g, mesopore surface area of 103.32 m2/g, a total pore volume of 0.1077 cm3/g, and fixed carbon content of 47.63%. The pore diameter of AGSAC was found to be a mesoporous type with a pore diameter of 2.50 nm. Freundlich isotherm and pseudo-second-order were found as the best-fitted model for MB adsorption equilibrium and kinetic respectively onto prepared AGSAC. Intraparticle diffusion was found to be the rate-limiting step.

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Activated carbon blended with grape stalks powder: Properties modification and its application in a dye adsorption

Cited by 50 publications

References 52 publications

Bentonite blended with bagasse ash as an adsorbent for reactive red 198 dyes

Bentonite blended with bagasse ash as an adsorbent for reactive red 198 dyes

Chestnut-Shell-Derived Magnetic Porous Carbon for Removing Malachite Green Dye from Water

Preparation of Alpinia galangaStem Based Activated Carbon via Single-step Microwave Irradiation for Cationic Dye Removal

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