Use of Palm Oil Waste for Activated Carbons Production and Its Application in Methylene Blue Removal

Jaramillo‐Martínez, Daniela; Buitrago‐Sierra, Robison; López, Diana

doi:10.1002/slct.202200791

Cited by 3 publications

(3 citation statements)

References 30 publications

(51 reference statements)

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“…This model assumes MB adsorption by activated biochars occurs in monolayers and homogeneous sites with the same binding energy [106]. This hypothesis is supported by the FTIR results found in Figure 1b, in which the signals indicate the presence of hydroxyl and carbonyl groups, reducing the number of active sites on the surface [69]. The Langmuir model was observed in other adsorption studies using activated biochars, highlighted below.…”

Section: Adssupporting

confidence: 59%

“…Observing the residual mass of the LAB and SAB above 900 • C (Figure 3(a1,a2)), the LAB had a higher residual content than the SAB, with 64% and 70%, respectively. It is therefore evident that the mass loss was slight, which indicates the activation of the biochar, approximately, at this temperature [69].…”

Section: Characterization Of Adsorbentsmentioning

confidence: 90%

“…The third and final step occurs above 900 °C and is associated with the combustion of fixed carbon in the sample[1].Observing the residual mass of the LAB and SAB above 900 °C (Figure3(a1,a2)), the LAB had a higher residual content than the SAB, with 64% and 70%, respectively. It is therefore evident that the mass loss was slight, which indicates the activation of the biochar, approximately, at this temperature[69].This higher amount of residues produced after SAB pyrolysis in the LAB is because water hyacinth has a higher proportion of lignin (10.88%) compared to leaf (8.36%), as well as cellulose (27.79% for the stem and 20.81% for the leaf) and hemicellulose (30.24% for the stem and 29.71% for the leaf)[70]. Such characteristics indicate that the leaf can biodegrade faster than the stem[70].…”

mentioning

confidence: 91%

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Biochar Derived from Water Hyacinth Biomass Chemically Activated for Dye Removal in Aqueous Solution

Carneiro,

Morais,

de Carvalho Melo

et al. 2023

Sustainability

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Rapid industrial development has led to the use of numerous dyes responsible for significant water pollution worldwide. Adsorbents have been developed to treat these waters, mainly in the form of activated biochar, which has several advantages, one of which is its good surface characteristics, such as high surface area and pore volume. The objective of the investigation was to analyze the efficiency of removing the methylene blue model dye in aqueous solutions through the adsorption process using biochar chemically activated from the leaf and stem of water hyacinth (Eichhornio crassipes) as a bioadsorbent. This study carbonized the stem and leaf containing zinc chloride at 600 °C. The materials were characterized by different techniques and were tested for their ability to adsorb methylene blue. The activated stem and leaf biochars removed approximately 285.71 and 322.58 mg g−1 of the dye, respectively, indicating that the adsorption is more significant in the leaf. Pseudo-second-order kinetics was the most suitable model to describe dye adsorption on biochars, and the experimental isotherm data fit the Langmuir model. It is concluded that the application of activated water hyacinth biochar is a renewable resource with the potential for effluent treatment.

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Section: Adssupporting

confidence: 59%

Section: Characterization Of Adsorbentsmentioning

confidence: 90%

mentioning

confidence: 91%

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Biochar Derived from Water Hyacinth Biomass Chemically Activated for Dye Removal in Aqueous Solution

Carneiro,

Morais,

de Carvalho Melo

et al. 2023

Sustainability

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Insights into Agricultural-Waste-Based Nano-Activated Carbon Fabrication and Modifications for Wastewater Treatment Application

et al. 2022

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The past few years have witnessed extensive global industrial development that has led to massive pollution to most available water resources. There is no alternative to sustainable development, and the utilization of agricultural waste for wastewater treatment has been always a novel milestone in sustainable development goals. Agricultural-waste-based nano-activated carbon exhibits high porosity, great surface area, and unique surface functional groups that promote it to becoming a future and sustainable solution for wastewater treatment applications. Several modification approaches have been made to further enhance the adsorption capacity and reusability of such adsorbents. In this review, we presented the potential of agricultural-waste-based nano-activated carbon as a sustainable solution for wastewater treatment. We highlighted the fabrication process and properties of different nano-activated carbons in addition to different modification approaches to enhance its adsorption capacity. Finally, we critically discussed the recent advances in nano-activated carbon applications in water treatment including its role in drinking water filtration, organic dye removal, oil spill applications, heavy metals removal and the elimination of toxic compounds from wastewater.

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High-Surface-Area-Activated Carbon Derived from Mango Peels and Seeds Wastes via Microwave-Induced ZnCl2 Activation for Adsorption of Methylene Blue Dye Molecules: Statistical Optimization and Mechanism

et al. 2022

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In this study, Mango (Mangifera indica) seeds (MS) and peels (MP) seeds mixed fruit wastes were employed as a renewable precursor to synthesize high-surface-area-activated carbon (MSMPAC) by using microwave-induced ZnCl2 activation. Thus, the applicability of MSMPAC was evaluated towards the removal of cationic dye (methylene blue, MB) from an aqueous environment. The key adsorption factors, namely A: MSMPAC dose (0.02–0.1 g), B: pH (4–10), and C: time (5–15 min), were inspected using the desirability function of the Box-Behnken design (BBD). Thus, the adsorption isotherm data were found to correspond well with the Langmuir model with a maximum adsorption capacity of (232.8 mg/g). Moreover, the adsorption kinetics were consistent with both pseudo-first-order and pseudo-second-order models. The spontaneous and endothermic nature of MB adsorption on the MSMPAC surface could be inferred from the negative ∆G° values and positive value of ∆H°, respectively. Various mechanisms namely electrostatic forces, pore filling, π-π stacking, and H-bonding govern MB adsorption by the MSMPAC. This study demonstrates the utility of MS and MP as renewable precursors to produce high-surface area MSMPAC with a potential application towards the removal of cationic organic dyes such as MB.

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Use of Palm Oil Waste for Activated Carbons Production and Its Application in Methylene Blue Removal

Cited by 3 publications

References 30 publications

Biochar Derived from Water Hyacinth Biomass Chemically Activated for Dye Removal in Aqueous Solution

Biochar Derived from Water Hyacinth Biomass Chemically Activated for Dye Removal in Aqueous Solution

Insights into Agricultural-Waste-Based Nano-Activated Carbon Fabrication and Modifications for Wastewater Treatment Application

High-Surface-Area-Activated Carbon Derived from Mango Peels and Seeds Wastes via Microwave-Induced ZnCl2 Activation for Adsorption of Methylene Blue Dye Molecules: Statistical Optimization and Mechanism

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