Modification of activated carbon-based adsorbent for removal of industrial dyes and heavy metals: A review

Raninga, Milan; Mudgal, Anurag; Patel, Vivek; Patel, Jatin; Sinha, Manish Kumar

doi:10.1016/j.matpr.2022.11.358

Cited by 37 publications

(12 citation statements)

References 72 publications

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“…The latter received chemical or thermal treatments, but the costs or the environmental impact that could be generated are not always indicated. Raninga et al (2023) indicates that the cost of physical and chemical activation with LiOH, KOH, and H 2 SO 4 ranges from 1.72 to 2.89 UDS/kg of adsorbent [68]. Similarly, H 3 PO 4 -modified berry leaves are priced at USD 10.68/kg, while activated carbon costs USD 172.96/kg [69].…”

Section: Adsorption Isotherms and Kineticsmentioning

confidence: 99%

Efficient Decontamination: Caffeine/Triclosan Removal using Rice Husk in Batch and Fixed-Bed Columns

Almeida-Naranjo,

Cuestas,

Guerrero

et al. 2024

Water

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Abundant, easily accessible, and low-cost agro-industrial residues represent attractive alternatives for removing emerging contaminants from water. In this work, the aqueous adsorption of caffeine/triclosan onto rice husk (RH) was studied in batch and continuous processes. For this purpose, adsorbents with three particle size ranges (120–150, 300–600, 800–2000 µm) were prepared and evaluated. The composition, structure, surface morphology, functionality, and specific surface area of the RH biosorbents were determined. This characterization revealed that RH primarily consists of lignin, cellulose, and hemicellulose, making up to 80.1% of its composition. RH also exhibited an irregular surface, with several functional groups (OH, C=O, CH, C=C, C-OH), and a relatively small specific surface area (1.18 m2/g). Batch tests were carried out using different RH sizes, doses (1–50 g/L), and contact times (5–300 min), using 20 mL of caffeine/triclosan solutions (30 mg/L). Tests were conducted to fit the most adequate kinetics and isotherm models. The optimal doses (g/L) for caffeine and triclosan removal were 4.5 and 1.5 with small RH, 8.5 and 2.5 with medium RH, and 50.0 and 10.0 with large RH, respectively. The optimal contact times for all three particle sizes were 180 and 60 min. Triclosan removal was greater than that of caffeine (2.5–25.5%) with all three particle sizes, requiring less adsorbent (2.5–5.0 times) and shorter times (3 times). The experimental data fit better the Sips isotherm and Elovich kinetics models. The small (120–150 µm) particles achieved the highest caffeine/triclosan batch adsorption capacities (6.3/28.6 mg/g). Continuous tests were performed on fixed-bed columns of 1 cm in diameter, packed with 4, 5, and 8 cm of RH, operated with hydraulic loading rates between 2 and 4 m3/m2day. Small particles also reached the highest adsorption capacity in the removal of caffeine (352.7 mg/L) and triclosan (3797.2 mg/L), and the experimental data were well-fitted to the Bohart–Adams model. The research results not only demonstrate the effective removal of contaminants but also illustrate the versatility and applicability of rice husk in various conditions and systems.

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Section: Adsorption Isotherms and Kineticsmentioning

confidence: 99%

Efficient Decontamination: Caffeine/Triclosan Removal using Rice Husk in Batch and Fixed-Bed Columns

Almeida-Naranjo,

Cuestas,

Guerrero

et al. 2024

Water

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“…Additionally, frankincense-based materials combined with other substances, such as iron oxide, can further enhance their selectivity for explicit pollutants and adsorption capacity. Despite the presence of several adsorbents in the field of dye remediation, researchers persist to search for better adsorbents with enhanced activity, specificity, and other parameters …”

Section: Introductionmentioning

confidence: 99%

“…Despite the presence of several adsorbents in the field of dye remediation, researchers persist to search for better adsorbents with enhanced activity, specificity, and other parameters. 48 Therefore, we proposed that using frankincense-based functionalized multiwalled carbon nanotubes (Fr-fMWCNT) and frankincense-based functionalized multiwalled carbon nanotubes with iron oxide (Fr-fMWCNT-Fe 3 O 4 ) as an adsorbent for removing organic dyes, such as CV, could potentially offer several advantages over other conventional adsorbents, like lower cost, being more eco-friendly, and being a natural and sustainable material. Moreover, our preparation method also involves the use of no harsh chemicals and an energy-efficient, eco-friendly approach, leading to a costeffective wastewater treatment solution.…”

Section: Introductionmentioning

confidence: 99%

Frankincense-Based Functionalized Multiwalled Carbon Nanotubes with Iron Oxide Composites for Efficient Removal of Crystal Violet: Kinetic and Equilibrium Analysis

Hussain,

Hussaini,

Shariq

et al. 2024

ACS Omega

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In this study, novel adsorbents were developed by functionalizing multiwalled carbon nanotubes with frankincense (Fr-fMWCNT) and adding iron oxide (Fe 3 O 4 ) to the adsorbent (Fr-fMWCNT-Fe 3 O 4 ). The morphology, surface characteristics, and chemical nature of the synthesized samples were analyzed by using various characterization techniques. The prepared adsorbents were then applied for the elimination of the toxic dye, crystal violet (CV), from waterbased solutions by employing a batch adsorption method. The effectiveness of materials for the adsorption of CV was investigated by tuning various effective experimental parameters (adsorbent dosage, dye quantity, pH, and contact time). In order to derive adsorption isotherms, the Langmuir and Freundlich adsorption models were investigated and compared. The Fr-fMWCNT and Fr-fMWCNT-Fe 3 O 4 were found to remove 85 and 95% of the CV dye within 30 min of the adsorption experiment at pH 6, respectively. It was found that a pseudo-second-order reaction rate was consistent with the experimental adsorption kinetics. The equilibrium data demonstrated that the Langmuir model adequately explained the adsorption behavior of the CV dye on the Fr-fMWCNT and Fr-fMWCNT-Fe 3 O 4 surfaces, respectively. According to the Langmuir study, the highest adsorption capacities of the dye are 434 mg/g for Fr-fMWCNT and 500 mg/g for Fr-fMWCNT-Fe 3 O 4 . Remediation of the CV dye using our novel composite materials has not been reported previously in the literature. The synthesized Fr-fMWCNT and Fr-fMWCNT-Fe 3 O 4 adsorbents can be economical and green materials for the adsorptive elimination of CV dye from wastewater.

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“…These methods include improving pore structure through doping with different substances, enhancing surface activity groups through impregnation of metal oxides, and optimizing activation temperature and atmosphere, which play a crucial role in the adsorption of NO x . , Wang et al used different concentrations of K 2 CO 3 for hydrothermal activation of Zhundong coal and found that the sample prepared with a K 2 CO 3 concentration of 0.01 g/mL exhibited a well-developed pore structure and significantly improved NO x adsorption performance. Wang et al developed a MnCuCeOx/γ-Al 2 O 3 catalyst modified with MNO x , which possesses dual active sites for NO x removal.…”

Section: Introductionmentioning

confidence: 99%

Surface Effects of Trace CuMnCe Loading on Coal-Based Carbon Materials and Mechanisms of NO_x Adsorption and Removal

Han,

Shao,

Wang

et al. 2023

Energy Fuels

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This study employed the water-thermal coupled high-temperature CO2 gasification method using Zhundong coal as the raw material to prepare porous carbon materials. A dual-function catalyst for NO x adsorption and reduction was prepared by loading Cu, Mn, and Ce components onto the carbon material through hydrothermal impregnation. The influence of metal loading content on the pore structure, surface functional groups, and synergistic effects between metals in the carbon-based catalyst was investigated during the preparation process. In the process of NO x removal using carbon-based catalysts, the primary components comprise two distinct phases: NO x adsorption and CO-SCR experiments. The experimental sequence involves the initial execution of NO x adsorption tests, succeeded by subsequent reduction treatments. These processes are undertaken systematically to comprehensively investigate the attributes of the catalyst. The physical and chemical parameters of the samples were characterized using XRD, Raman, H2-TPR, NO x -TPD, and other techniques. Finally, the NO x adsorption and reduction mechanism of representative samples were deeply analyzed using in situ DRIFTS. The results showed that when the loading amounts of Cu, Mn, and Ce were 0.006, 0.012, and 0.003 g, respectively, the pore structure of the catalyst was excellent, with a NO x adsorption performance (q e) of 16.23 mg/g, and the NO conversion rate reached 66% at 200 °C. This is mainly attributed to the enhanced interaction between metal species on the catalyst surface by optimizing the metal content on the carbon support, which promotes the dissociation of NO in the NO + CO reaction. In situ DRIFTS results confirmed that NO and CO adsorb on the catalyst surface, and CO* reacts with NO* to produce N2 and CO2, following the Langmuir–Hinshelwood mechanism.

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Modification of activated carbon-based adsorbent for removal of industrial dyes and heavy metals: A review

Cited by 37 publications

References 72 publications

Efficient Decontamination: Caffeine/Triclosan Removal using Rice Husk in Batch and Fixed-Bed Columns

Efficient Decontamination: Caffeine/Triclosan Removal using Rice Husk in Batch and Fixed-Bed Columns

Frankincense-Based Functionalized Multiwalled Carbon Nanotubes with Iron Oxide Composites for Efficient Removal of Crystal Violet: Kinetic and Equilibrium Analysis

Surface Effects of Trace CuMnCe Loading on Coal-Based Carbon Materials and Mechanisms of NO_x Adsorption and Removal

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Modification of activated carbon-based adsorbent for removal of industrial dyes and heavy metals: A review

Cited by 37 publications

References 72 publications

Efficient Decontamination: Caffeine/Triclosan Removal using Rice Husk in Batch and Fixed-Bed Columns

Efficient Decontamination: Caffeine/Triclosan Removal using Rice Husk in Batch and Fixed-Bed Columns

Frankincense-Based Functionalized Multiwalled Carbon Nanotubes with Iron Oxide Composites for Efficient Removal of Crystal Violet: Kinetic and Equilibrium Analysis

Surface Effects of Trace CuMnCe Loading on Coal-Based Carbon Materials and Mechanisms of NOx Adsorption and Removal

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Surface Effects of Trace CuMnCe Loading on Coal-Based Carbon Materials and Mechanisms of NO_x Adsorption and Removal