Preparation and characterization of activated carbon from agricultural wastes and their ability to remove chlorpyrifos from water

Hussain, Omaima; Hathout, Amal S.; Abdel-Mobdy, Yasmin E.; Rashed, M.M.; Rahim, Emam A. Abdel; Fouzy, A. S. M.

doi:10.1016/j.toxrep.2023.01.011

Cited by 46 publications

(18 citation statements)

References 43 publications

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“…The peak observed at 3620–3750 cm –1 corresponds to the stretching vibration of hydroxyl groups (−OH) on the phenolic and alcohol functional groups on the surface of the AC . The vibration peaks in the range of 3000–3600 cm –1 are attributed to the stretching vibration of water molecules adsorbed on the catalyst surface . The peaks in the range of 1300–1750 cm –1 originate from the vibration of the CC bond in aromatic rings and the conjugated vibration effect between the CO group and benzene rings or nitrogen-containing species .…”

Section: Results and Analysismentioning

confidence: 99%

“…32 The vibration peaks in the range of 3000− 3600 cm −1 are attributed to the stretching vibration of water molecules adsorbed on the catalyst surface. 33 The peaks in the range of 1300−1750 cm −1 originate from the vibration of the C�C bond in aromatic rings and the conjugated vibration effect between the C�O group and benzene rings or nitrogencontaining species. 6 Upon comparing with AC, the vibration intensity at 1300−1750 cm −1 significantly increases after the metal loading, with AC-5 exhibiting the highest intensity.…”

Section: Ft-ir Analysismentioning

confidence: 99%

“…34 The overlapping peaks in the range of 950− 1200 cm −1 (962 cm −1 ) are assigned to the stretching vibration of C−O−C, −OH, and C−N bonds. 33,35 The absorption peaks at 638, 698, and 838 cm −1 correspond to the out-ofplane bending vibration of σCH, which is related to the decomposition of bands during the hydrothermal impregnation of metal oxides. 32 In the figure, variations in vibration intensity are observed for all samples, indicating that regardless of changes in the loading amount of metal oxides, catalyst pore structure, and surface morphology, only the content of functional groups is altered, while the diversity of functional groups is retained.…”

Section: Ft-ir Analysismentioning

confidence: 99%

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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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Section: Results and Analysismentioning

confidence: 99%

Section: Ft-ir Analysismentioning

confidence: 99%

Section: Ft-ir Analysismentioning

confidence: 99%

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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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“…In our opinion, future studies should focus on the aspect of practical, industrial application, considering all involved factors: associated costs to produce the active material, energetic costs or costs related to the regeneration of the active materials, alongside the efficiency of the developed technologies, compared to the current state of the art (i.e., the use of activated carbon, clays, etc.) [113,114].…”

Section: Concluding Remarks and Future Perspectivesmentioning

confidence: 99%

Natural and Natural-Based Polymers: Recent Developments in Management of Emerging Pollutants

Fierăscu

Matei

et al. 2023

Polymers

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Anthropogenic activities lead to the issue of new classes of pollutants in the environment that are not currently monitored in environmental studies. This category of pollutants (known as emerging contaminants) includes a very wide range of target substances, such as pharmaceuticals, plant protection products, personal care products, dyes, toxins, microplastics and many other industrially important intermediaries. Together with an increasing demand for clean water (both for agricultural necessities and for the increasing population consumption), the need for the removal of emerging pollutants, simultaneously with the current “green chemistry” approach, opens the door for the industrial application of natural polymers in the area of environmental protection. Recent developments in this area are presented in this paper, as well as the application of these particular natural materials for the removal of other contaminants of interest (such as radioisotopes and nanoparticles). The current knowledge regarding the processes’ kinetics is briefly presented, as well as the future development perspectives in this area.

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“…The sharp peaks at 1740 cm −1 and 1367 cm −1 are due to the C-O stretching vibration of the carboxyl group [48]. The peak at 1219 cm −1 indicates the presence of C-O stretching of aliphatic ether [58]. The band at 1079 cm −1 refers to asymmetrical stretching of C-O-C functional group, while the band at 809 cm −1 refers to C-H bending [58].…”

Section: Characterization Of Materialsmentioning

confidence: 99%

Adsorption of Lead from Aqueous Solution Using Activated Carbon Derived from Rice Husk Modified with Lemon Juice

Futalan,

Diana,

Edang

et al. 2023

Sustainability

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In the present work, activated carbon (RHAC-LJ) was synthesized utilizing rice husk as a carbon source that is activated with lemon juice. Moreover, the adsorptive capacity of RHAC-LJ in removing Pb(II) from aqueous solution was investigated. FTIR analysis revealed the presence of amides, alkenes, carboxyl and hydroxyl groups in RHAC-LJ. SEM micrographs illustrate that activation with lemon juice resulted in high pore volume and greater pore diameter. Activation using acid from lemon juice can remove impurities from the adsorbent surface. The surface area and pore volume of RHAC-LJ were determined to be 112.87 m2·g−1 and 0.107 cm3/g, respectively. Adsorption kinetics followed the pseudo-second-order equation (R2 = 0.9941) with a rate constant of 3.3697 g/mg·min for Pb (II), which indicates chemisorption to be the rate-determining step of the process. The BBD model using RSM was applied in studying the effects of pH, stirring speed and adsorbent dosage and their interactions on the removal efficiency of RHAC-LJ. Analysis of variance was used to examine the significance of the model, independent parameters, and their interactions. Moreover, a removal efficiency of 98.49% can be attained using the following optimal conditions: 197 rpm, pH 5.49, and adsorbent dosage of 0.3487 g. Overall, the present work illustrates RHAC-LJ as a potential low-cost adsorbent for the removal of Pb(II) from synthetic wastewater.

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Preparation and characterization of activated carbon from agricultural wastes and their ability to remove chlorpyrifos from water

Cited by 46 publications

References 43 publications

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

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

Natural and Natural-Based Polymers: Recent Developments in Management of Emerging Pollutants

Adsorption of Lead from Aqueous Solution Using Activated Carbon Derived from Rice Husk Modified with Lemon Juice

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Preparation and characterization of activated carbon from agricultural wastes and their ability to remove chlorpyrifos from water

Cited by 46 publications

References 43 publications

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

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

Natural and Natural-Based Polymers: Recent Developments in Management of Emerging Pollutants

Adsorption of Lead from Aqueous Solution Using Activated Carbon Derived from Rice Husk Modified with Lemon Juice

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Product

Resources

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

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