Linearity Graph in the Prediction of Granular Active Carbon (GAC) Adsorption Ability

Cendekia, Děvy; Afifah, Dian Ayu; Hanifah, Windia

doi:10.1088/1755-1315/1012/1/012079

Cited by 2 publications

(2 citation statements)

References 4 publications

(3 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A significant difference (p < 0.05) was detected between the fifth, sixth, and seventh washing stages and the solution after being diluted with distilled water (11.54). This is related to the removal of organic compounds by adsorption techniques, leading to a decreased solution pH [42]. Similar results were found in Lubis et al [43].…”

Section: Ph and Ts Of Solutionssupporting

confidence: 84%

Decolorization of Lactose-6-Phosphate Solutions Using Activated Carbon

Alsaleem,

Hammam,

Metzger

2023

Processes

View full text Add to dashboard Cite

Sugar phosphorylation has many applications that can be used to develop dairy and food products. During the phosphorylation process, the color of the solution turns into a dark color. The dark color causes many challenges and limitations in using phosphorylation products. The dark color could cause unpleasant color changes in the products, so it is important to remove that color. Activated carbon has been utilized for decades to remove the dark color and improve the appearance of solutions such as sugar syrup and wastewater. This methodology is cheap and environmentally friendly. The objectives of this study were to develop a method to phosphorylate α-lactose monohydrate and milk permeate and to remove the dark color of solutions. The compositional characteristics of the solution, such as pH, total solids, and color parameters (L*—lightness; a*—redness; and b*—yellowness), were examined at different stages (seven stages) of washing the solutions. α-lactose monohydrate and MPP solutions were diluted with distilled water with a ratio of 1:2.2. Activated carbon was mixed with the solutions and left for 5 min at room temperature. Subsequently, the solutions were filtered. These steps were repeated seven times until there was a transparent (colorless) solutions. The experiment was repeated using three different batches of lactose and milk permeate solutions. Both solutions’ pH and total solids decreased with an increase in the number of washings with activated carbon. The International Commission on Illumination (CIE) L*a*b* scale was studied. The L* of the initial solutions was lower than that of the final solutions. However, the a* and b* of the initial solutions were higher than the final solutions. The total color difference (∆E) was calculated for both solutions. ∆E decreased with an increase in the number of washings with activated carbon in both solutions. We conclude that activated carbon can be used to remove the dark color that results from the phosphorylation process.

show abstract

Section: Ph and Ts Of Solutionssupporting

confidence: 84%

Decolorization of Lactose-6-Phosphate Solutions Using Activated Carbon

Alsaleem,

Hammam,

Metzger

2023

Processes

View full text Add to dashboard Cite

show abstract

“…This discrepancy is minor and further validates the suitability of the model in affirming its sufficiency for predicting the responses. In comparison with the ideal iodine numbers of commercial granular activated carbons (GACs) used for pollutant removal from wastewater, only the PMAC-KOHop fall within the typical range of 800 to 1200 mg/g (Cendekia et al, 2021). Since any GAC with higher iodine numbers generally exhibit greater adsorption efficiency and are considered more effective for the removal of pollutants in wastewater treatment processes, the PMAC-KOHop could perform well as a pollutant adsorbent.…”

Section: Operating Parameters Optimization and Validationmentioning

confidence: 99%

Statistical optimization of iodine adsorption for <i>Pentaclethra macrophylla</i> pods activated carbon production

Ogbeh,

Ogunlela,

Emaikwu

2024

SWJ

View full text Add to dashboard Cite

Efficient production of activated carbon (AC) depends on variables such as feedstock properties, preparation conditions, and activating agents. This study aimed to identify optimal conditions for AC production from African Oil Bean (Pentaclethra macrophylla) Pods (PMps) using potassium hydroxide (KOH) and phosphoric acid (H3PO4) as activating agents. Through a systematic iodine adsorption characterization approach and leveraging Response Surface Methodology as a chemometric tool, the study fine-tuned chemical activation and carbonization parameters (temperature, time, and impregnation ratio) for producing PMACs. The adjustments directly impacted the iodine number (In) and yields (Cy) of the PMACs (PMAC-KOHop and PMAC-H3PO4op). The predicted In and Cy values closely aligned with the observed values – (PMAC-KOHop: 918.58 mg/g predicted vs. 916.56 mg/g observed; PMAC-H3PO4op: 593.44 mg/g predicted vs. 592.88 mg/g observed) and (PMAC-KOHop: 39.60% predicted vs. 39.15% observed; PMAC-H3PO4op: 51.30% predicted vs. 51.10% observed), demonstrating precision of the production process. Key structural properties, including BET specific surface areas (SSA), total pore volumes (Vt), and average pore diameters, exhibited notable differences between the PMAC-KOHop and PMAC-H3PO4op, with the former demonstrating superiority. Particularly, FTIR spectra highlighted higher aromaticity in PMAC-KOHop, revealing the preference for KOH over H3PO4 in the chemical activation of PMps. The high In achieved with the PMAC-KOHop indicated its efficacy as a pollutant adsorbent, aligning with the established attributes of commercial granular activated carbons for pollutants removal from wastewater. This study establishes PMps as a dependable AC precursor, emphasizing the advantages of KOH over H3PO4 in chemical activation. Future research should be directed at investigating PMAC-KOHop adsorption capabilities for diverse pollutants and exploring PMps' potential contributions to metallic or nanocomposite formations with other adsorbents.

show abstract

Linearity Graph in the Prediction of Granular Active Carbon (GAC) Adsorption Ability

Cited by 2 publications

References 4 publications

Decolorization of Lactose-6-Phosphate Solutions Using Activated Carbon

Decolorization of Lactose-6-Phosphate Solutions Using Activated Carbon

Statistical optimization of iodine adsorption for <i>Pentaclethra macrophylla</i> pods activated carbon production

Contact Info

Product

Resources

About