Green synthesis of graphene oxide from oil palm leaves as novel adsorbent for removal of Cu(II) ions from synthetic wastewater

Fathy, Mahmoud; Hosny, R.; Keshawy, Mohamed; Gaffer, Amany

doi:10.1007/s41127-019-00025-w

Cited by 19 publications

(3 citation statements)

References 25 publications

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“…28 The O-H stretching vibrations of the hydroxylic, carboxylic, and alcoholic groups of biomasses are represented by the broad and intense peaks observed at 3700-3050 cm −1 in the OPL feedstock but the OPL biochar exhibited weaker peak intensity. 27,28,30,77,78 This demonstrates the successful pyrolysis process associated with the loss of MC and the decrease in O─H content in the OPL biochar. 28 The intense peaks at 2918 and 2849 cmˉ1 in the OPL feedstock can be ascribed to alkane compounds' asymmetric and symmetric C-H stretching vibration.…”

Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 76%

Elaeis guineensisleaves for potential renewable sub‐bituminous coal: Optimization of biochar yield by response surface methodology and product characterization

Nik Pauzi,

Ramli,

Chan

et al. 2023

Biofuels Bioprod Bioref

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Pyrolysis of oil palm biomass residue can convert the rich organic matter in biomass into sustainable green energy, thereby addressing the challenge of surplus oil palm biomass residue generated during cultivation. Nonetheless, the pyrolysis of oil palm leaves (OPLs) has received limited attention. In this study, design of experiment‐response surface methodology (DoE‐RSM) was employed to identify the optimal combination of reaction temperature, residence duration, and nitrogen (N₂) flow rate for maximum biochar yield. The elemental analysis, high heating value (HHV), functional group, morphology, pore structure, and thermal behavior were assessed. By varying the operational parameters using response surface methodology, the biochar yield increased by 32.6–85.3%. The DoE‐RSM predicted a theoretical yield of 52.1% at 344 °C, 146 min, and 3.2 scfh N₂ flow rate. The experiment confirmed a comparable yield of 53.7% at the stated parameters. The HHV of 24.14 MJ kg−1 was recorded under optimal conditions, and was comparable to sub‐bituminous and bituminous coal. Fourier transform infrared analysis validated the OPL biochar by weakening O‐H, C=O, C‐OH, and C‐H peaks. Scanning electron microscopy images revealed enlarged pores and altered morphology in the OPL biochar. X‐ray diffraction showed lower crystallinity of the OPL biochar than the feedstock. Raman spectroscopy showed higher ID/IG, indicating a more disordered carbon structure in the OPL biochar. Thermogravimetric analysis confirmed higher temperature for main devolatilization of OPL biochar, and the differential thermogravimetric analysis curve pattern resembled that of Mukah Balingan coal. The findings are helpful for an initiative to convert a large amount of leftover OPLs produced during cultivation and to turn them into high value‐added material for a sustainable contribution to a circular carbon economy.

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Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 76%

Elaeis guineensisleaves for potential renewable sub‐bituminous coal: Optimization of biochar yield by response surface methodology and product characterization

Nik Pauzi,

Ramli,

Chan

et al. 2023

Biofuels Bioprod Bioref

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“…Lately, scientists have focused on preparing new multifunctional adsorbents with low costs and ease of use [ 16 , 17 ]. These adsorbents may be composed of synthetic or natural substrates, such as industrial byproducts, clays, biosorbents, and modified biosorbents [ 18 , 19 ]. Among these substrates, chitosan (natural biopolymers) [ 20 ] is considered an effective adsorbent for removing heavy metals [ 21 ] because it is a polysaccharide with the functional groups -OH and -NH 2 , is hydrophilic and biodegradable, and is easy to derive because of its ability to form chelates with the heavy metals [ 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Performance of Chitosan via a Novel Quaternary Magnetic Nanocomposite Chitosan/Grafted Halloysitenanotubes@ZnγFe3O4 for Uptake of Cr (III), Fe (III), and Mn (II) from Wastewater

et al. 2021

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A novel chitosan/grafted halloysitenanotubes@Zngmagnetite quaternary nanocomposite (Ch/g-HNTs@ZngM) was fabricated using the chemical co-precipitation method to remove the ions of Cr (III), Fe (III), and Mn (II) from wastewater. The characteristics of the synthesized Ch/g-HNTs@ZngM quaternary nanocomposite were investigated using FTIR, SEM, XRD, GPC, TGA, TEM, and surface zeta potential. The characterization analysis proved that the mentioned nanocomposite structure contains multiple functional groups with variable efficiencies. Additionally, they proved the existence of magnetic iron in the nanocomposite internal structure with the clarity of presentation of gaps and holes of high electron density on its surface. The results showed that the pH and time to reach an equilibrium system for all the studied metal ions were obtained at 9.0 and 60 min, respectively. The synthesized Ch/g-HNTs@ZngM nanocomposite exhibited maximum adsorption removal of 95.2%, 99.06%, and 87.1% for Cr (III), Fe (III), and Mn (II) ions, respectively. The pseudo-second-order kinetic model and, for isotherm, the Langmuir model were best fitted with the experimental data. The thermodynamic parameters indicated the exothermic and spontaneous nature of the adsorption reaction as proven by the ΔH° and ΔG° values. Additionally, chemical adsorption by the coordination bond is supposed as the main mechanism of adsorption of the mentioned metal ions on the nanocomposite. Finally, Ch/g-HNTs@ZngM displays prospected advantages, such as a low-expense adsorbent, high efficiency and availability, and an eco-friendly source, that will reduce the environmental load via an environmentally friendly method.

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“…Also, Fathy [12] synthesized ACTF from oil palm leaves. According to El-Sayed [13] amorphous carbon thin films ACTF was esisynthesized from sawdust used effectively to remove oil from water with high adsorption capacity [14].…”

Section: Introductionmentioning

confidence: 99%

Utilization of Cross-Linked Chitosan/ ACTF Biocomposite for Softening Hard Water: Optimization by Adsorption Modeling

et al. 2019

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I n this study cross-linked biocomposite with a high adsorption capacity was prepared by incorporating amorphous carbon thin film (ACTF); synthesized from rice straw by catalytic acid spray method; into the chitosan biopolymeric matrix by microwave irradiation precipitation technique. The new technique improves the polymeric cross-linking effect between ACTF and chitosan without catalyst and does not affect the spatial structure of chitosan. The physicochemical properties of the resulting biocomposite were evaluated by FTIR, SEM, XRD, Raman. The chitosan/ACTF biocomposite analyses refer to the presence of cave-shaped pores, high electron density and ion exchange active sites on internal and external surfaces in addition to high thermal stability. The adsorption study summarizes the potential of novel chitosan/ACTF biocomposite for the removal of Ca 2+ and Ba 2+ from water by batch adsorption. Freundlich isotherm model was best fitted to equilibrium data as well as the pseudo-second-order kinetic model was best fitted to adsorption kinetic data. Thermodynamic parameters (ΔG, ΔH, and ΔS) suggested the exothermic nature of Ca 2+ and Ba 2+ adsorption. The removal efficiency for Ca 2+ and Ba 2+ were 80% and 87.85 % at initial concentration of 100 mg/l, respectively. The results indicated that the chitosan/ACTF biocomposite has a high adsorption capacity and excellent water compatibility.

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Green synthesis of graphene oxide from oil palm leaves as novel adsorbent for removal of Cu(II) ions from synthetic wastewater

Cited by 19 publications

References 25 publications

Elaeis guineensisleaves for potential renewable sub‐bituminous coal: Optimization of biochar yield by response surface methodology and product characterization

Elaeis guineensisleaves for potential renewable sub‐bituminous coal: Optimization of biochar yield by response surface methodology and product characterization

Enhanced Performance of Chitosan via a Novel Quaternary Magnetic Nanocomposite Chitosan/Grafted Halloysitenanotubes@ZnγFe3O4 for Uptake of Cr (III), Fe (III), and Mn (II) from Wastewater

Utilization of Cross-Linked Chitosan/ ACTF Biocomposite for Softening Hard Water: Optimization by Adsorption Modeling

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