Mangosteen peel waste as a sustainable precursor for high surface area mesoporous activated carbon: Characterization and application for methylene blue removal

Nasrullah, Asma; Saad, Bahruddin; Bhat, A. H.; Khan, Amir Sada; Danish, Mohammed; Isa, Mohamed Hasnain; Akhtar, Naeem

doi:10.1016/j.jclepro.2018.11.094

Cited by 180 publications

(49 citation statements)

References 49 publications

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“…The thermodynamic parameters of the adsorption process by CW and WW hydrochar are shown in Table 5. The results reveal that the adsorption phenomenon of both hydrochars occurred spontaneously, as the ∆G values at all temperatures are negative [49]. This finding agreed with the conclusions drawn from the separation factor (R L ) analysis described in the previous section, where all the values of RR L R varied between 0 and 1.…”

Section: Adsorption Thermodynamicssupporting

confidence: 91%

Cationic Dye Adsorption on Hydrochars of Winery and Citrus Juice Industries Residues: Performance, Mechanism, and Thermodynamics

et al. 2020

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With the increasing needs of clean water supplies, the use of biomass wastes and residues for environmental remediation is essential for environmental sustainability. In this study, the residues from winery and citrus juice industries, namely grape skin and orange peel, respectively, were first converted to hydrochars by hydrothermal carbonization (HTC) and then a cationic dye (methylene blue) adsorption was studied on hydrochars. Hydrochars from both feedstocks were produced at three different temperatures (180, 220, and 250 °C) and a fixed residence time (1 h) to evaluate the hydrochar’s performance on the dye adsorption. The hydrochars were characterized in terms of their pH, pH at point of zero charge (pHPZC), surface functionalities, and surface area. A batch adsorption study of the dye was carried out with variable adsorbate concentration, pH, and temperature. Two adsorption isotherms namely Langmuir and Freundlich models were fitted at 4, 20, and 36 °C. The thermodynamic properties of adsorption (Gibbs free energy (ΔG), enthalpy (ΔH) and entropy (ΔS)) were evaluated from the isotherms fittings. Results showed that the dye adsorption on both hydrochars was significant and followed Langmuir isotherm. The maximum adsorption capacity on citrus waste hydrochar was higher than the winery waste hydrochar at any corresponding HTC temperature. Although hydrochars showed the lowest surface area (46.16 ± 0.11 and 34.08 ± 1.23 m2/g for citrus and winery wastes, respectively) at 180 °C, their adsorption was the highest, owing to their maximum density of total oxygen functional groups (23.24 ± 0.22 and 32.69 ± 1.39 µmol/m2 for citrus and winery wastes, respectively), which decreased with the increase in HTC temperature. This research shows a sustainable route for the production of highly effective adsorbent materials at lower HTC temperatures from citrus and winery wastes.

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Section: Adsorption Thermodynamicssupporting

confidence: 91%

Cationic Dye Adsorption on Hydrochars of Winery and Citrus Juice Industries Residues: Performance, Mechanism, and Thermodynamics

et al. 2020

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“…Adsorption is considered one of the most prosperous and environmental friendly technique for wastewater remediations. [18][19][20][21] The use of biomass, [22][23][24][25] activated carbon [26][27][28][29] and clay minerals 30,31 as adsorbents for organic contaminants remediation has been fully studied.…”

Section: Introductionmentioning

confidence: 99%

Removal of anthracene in water by MIL-88(Fe), NH₂-MIL-88(Fe), and mixed-MIL-88(Fe) metal–organic frameworks

et al. 2019

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“…In contrast, a maximum BET surface area of over 1200 m 2 g −1 was obtained for almond shells impregnated at the same impregnation ratio but subjected to higher temperature (i.e., 600 °C) [ 108 ]. At high impregnation ratios of 4–6, mesoporous ACs with developed surface area were obtained at temperatures of 600–700 °C [ 109 , 110 ]. Compared to the amount of the activating agent used, the activation time has a smaller effect on the development of microporosity.…”

Section: Activation Processmentioning

confidence: 99%

Activated Carbons and Their Evaluation in Electric Double Layer Capacitors

Kierzek

Gryglewicz

2020

Molecules

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This review presents a summary of the manufacturing of activated carbons (ACs) as electrode materials for electric double layer capacitors. Commonly used techniques of open and closed porosity determination (gas adsorption, immersion calorimetry, X-ray and neutrons scattering) were briefly described. AC production methods (laboratory and industrial) were detailed presented with the stress on advantages and drawbacks of each ones in the field of electrode materials of supercapacitor. We discussed all general parameters of the activation process and their influence on the production efficiency and the porous structure of ACs. We showed that porosity development of ACs is not the only factor influencing capacity properties. The role of pore size distribution, raw material origin, final carbon structure ordering, particles morphology and purity must be also taken into account. The impact of surface chemistry of AC was considered not only in the context of pseudocapacity but also other important factors, such as inter-particle conductivity, maximal operating voltage window and long-term stability.

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Mangosteen peel waste as a sustainable precursor for high surface area mesoporous activated carbon: Characterization and application for methylene blue removal

Cited by 180 publications

References 49 publications

Cationic Dye Adsorption on Hydrochars of Winery and Citrus Juice Industries Residues: Performance, Mechanism, and Thermodynamics

Cationic Dye Adsorption on Hydrochars of Winery and Citrus Juice Industries Residues: Performance, Mechanism, and Thermodynamics

Removal of anthracene in water by MIL-88(Fe), NH₂-MIL-88(Fe), and mixed-MIL-88(Fe) metal–organic frameworks

Activated Carbons and Their Evaluation in Electric Double Layer Capacitors

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Mangosteen peel waste as a sustainable precursor for high surface area mesoporous activated carbon: Characterization and application for methylene blue removal

Cited by 180 publications

References 49 publications

Cationic Dye Adsorption on Hydrochars of Winery and Citrus Juice Industries Residues: Performance, Mechanism, and Thermodynamics

Cationic Dye Adsorption on Hydrochars of Winery and Citrus Juice Industries Residues: Performance, Mechanism, and Thermodynamics

Removal of anthracene in water by MIL-88(Fe), NH2-MIL-88(Fe), and mixed-MIL-88(Fe) metal–organic frameworks

Activated Carbons and Their Evaluation in Electric Double Layer Capacitors

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Product

Resources

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Removal of anthracene in water by MIL-88(Fe), NH₂-MIL-88(Fe), and mixed-MIL-88(Fe) metal–organic frameworks