Microporous-activated carbons of type I adsorption isotherm derived from sugarcane bagasse impregnated with zinc chloride

Nemr, Ahmed El; Aboughaly, Rawan M.; El-Sikaily, Amany; Masoud, Mamdouh S.; Ramadan, Mohamed; Ragab, Safaa

doi:10.1007/s42823-021-00270-1

Cited by 29 publications

(16 citation statements)

References 115 publications

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“…There are some notable advantages of activated carbon (AC), such as low production cost, high surface reactivity, significant thermal stability, active free valances, and the applicability of its high capacity and high rate of adsorption [ 19 ]. Both powdered (approximately 44 µm) and granulated (particle size 0.6–4.0 mm) forms of activated carbon can be obtained [ 20 , 21 ]. Activated carbon can be divided depending on its pore size into microporous (<2 nm), mesoporous (2–50 nm), and macroporous (>50 nm) groups, which can be controlled during the preparation process of activated carbon for specific applications [ 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Microporous Activated Carbon from Pisum sativum Pods Using Various Activation Methods and Tested for Adsorption of Acid Orange 7 Dye from Water

El‐Nemr

Nemr²,

Hassaan³

et al. 2022

Molecules

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This work demonstrates the preparation of high-surface-area activated carbon (AC) from Pisum sativum pods using ZnCl2 and KOH as activating agents. The influence of CO2 and N2 gases during the carbonization process on the porosity of AC were studied. The highest specific surface area of AC was estimated at 1300 to 1500 m2/g, which presented characteristics of microporous materials. SEM micrographs revealed that chemical activation using an impregnation reagent ZnCl2 increases the porosity of the AC, which in turn leads to an increase in the surface area, and the SEM image showed that particle size diameter ranged between 48.88 and 69.95 nm. The performance of prepared AC for adsorption of Acid Orange 7 (AO7) dye was tested. The results showed that the adsorption percentage by AC (2.5 g/L) was equal to 94.76% after just 15 min, and the percentage of removal increased to be ~100% after 60 min. The maximum adsorption capacity was 473.93 mg g−1. A Langmuir model (LM) shows the best-fitted equilibrium isotherm, and the kinetic data fitted better to the pseudo-second-order and Film diffusion models. The removal of AO7 dye using AC from Pisum sativum pods was optimized using a response factor model (RSM), and the results were reported.

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Section: Introductionmentioning

confidence: 99%

Microporous Activated Carbon from Pisum sativum Pods Using Various Activation Methods and Tested for Adsorption of Acid Orange 7 Dye from Water

El‐Nemr

Nemr²,

Hassaan³

et al. 2022

Molecules

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“…The effect of pH was studied for SDO, SSD, and PSD using 100 ml of 100 ppm of initial MB dye concentration using solution pH (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12). The pH PZC has been studied for the SDO, SSD, and PSD biochars following the literature-reported method [60].…”

Section: Effect Of Solution Ph Initial Mb Dye Concentration Adsorbent...mentioning

confidence: 99%

“…The isotherm study for sawdust biochars was performed using various initial concentrations of MB dye solution (20,40,60,80, 100, and 120 mg.L −1 ) using different doses of SDO and SSD biochars (05, 1.0, 2.0, 3.0, and 4.0 g.L −1 ) as well as the various concentrations of MB dye solution (100, 150, 200, 300, and 400 mg.L −1 ) using different doses of PSD biochar (0.5, 1.0, 1.5, 2.0, and 2.50 g.L −1 ). The samples were shaken at 200 rpm, and the MB dye concentration was analyzed at different time intervals at room temperature (25 ± 2 °C).…”

Section: Effect Of Solution Ph Initial Mb Dye Concentration Adsorbent...mentioning

confidence: 99%

“…An important factor that impacts the biosorption process, which assesses the biosorbent-sorbate system equilibrium, is the biosorbent dosage [54,60]. The impact of biochar dosage on the sequestration of MB dye ions using SDO, SSD, and PSD biochars is reported in Fig.…”

Section: Effect Of Biochar Dosage On the Biosorption Of Mb Dyementioning

confidence: 99%

“…) logq e = 1 ∕ n logC e + logK F signifying the sorption driving force or surface heterogeneity magnitude [4,60,63].…”

Section: Isotherm Studiesmentioning

confidence: 99%

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Adsorption of methylene blue (MB) dye on ozone, purified and sonicated sawdust biochars

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The synthesized biochars derived from sawdust (SD) SD ozone (SDO) biochar, purified SD (PSD) biochar, and sonicated SD (SSD) biochar, which was employed in the confiscation of methylene blue (MB) dye ion, were characterized employing “Brunauer–Emmett–Teller (BET), scanning electron microscope (SEM), Fourier Transform Infrared (FTIR), and Thermal gravimetrical analysis (TGA).” The impact of various factors, such as pH, biochar dosage, and initial concentration, on MB dye sequestration, was tested in this study. It was found that the biosorption of MB dye to the various biochars was dependent on the solution pH, with optimum confiscation of MB observed at pH 12 for all biochars. Pseudo-second-order (PSO), Freundlich (FRH)- (SDO and SSD biochars), and Langmuir (LNR)- (PSD biochar) models were used to best describe the biosorption process of MB dye to various biochars. Based on the LNR model fitting to the experimental data, the optimum sorption capacities obtained using SDO, SSD, and PSD biochars were 200, 526, and 769 mg/g, respectively. Electrostatic interaction and hydrogen bonding played an important role in the interaction mechanism between the various biochars and MB dye. Hence, these studied SDO, PSD, and SSD biochars prepared from cheap, easily accessible, biodegradable, and non-hazardous agro-waste materials can be effectively used for the removal, treatment, and management of MB dye as well as other industrial effluents before their disposal into the environment.

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Enhanced removal of micropollutants from water using ZnCl2-modified Spirulina sp.-based biochar

Moon,

Lee,

Park

et al. 2023

J Appl Phycol

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Microporous-activated carbons of type I adsorption isotherm derived from sugarcane bagasse impregnated with zinc chloride

Cited by 29 publications

References 115 publications

Microporous Activated Carbon from Pisum sativum Pods Using Various Activation Methods and Tested for Adsorption of Acid Orange 7 Dye from Water

Microporous Activated Carbon from Pisum sativum Pods Using Various Activation Methods and Tested for Adsorption of Acid Orange 7 Dye from Water

Adsorption of methylene blue (MB) dye on ozone, purified and sonicated sawdust biochars

Enhanced removal of micropollutants from water using ZnCl2-modified Spirulina sp.-based biochar

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