Effect of pre-pyrolysis mode on simultaneous introduction of nitrogen/oxygen-containing functional groups into the structure of bagasse-based mesoporous carbon and its influence on Cu(II) adsorption

Wan, Zeqing; Li, Kunquan

doi:10.1016/j.chemosphere.2017.11.181

Cited by 40 publications

(10 citation statements)

References 64 publications

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“…A comparison of the adsorption capacity of Cu(II) on SBCMP obtained in this study to those of relevant adsorbents published in the literature is shown in Table 2 21,35,37,43–48 . It can be seen that SBCMP has a relatively high adsorption capacity for Cu(II) compared to other sugarcane bagasse based adsorbents and other bio‐adsorbents.…”

Section: Resultsmentioning

confidence: 70%

Polyethylenimine‐modified sugarcane bagasse cellulose as an effective adsorbent for removing Cu(II) from aqueous solution

Jiang

Xing

Zhang

et al. 2020

J of Applied Polymer Sci

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Polyethylenimine‐modified sugarcane bagasse cellulose (SBCMP), as a new adsorbent, was synthesized by the reaction of polyethylenimine (PEI) with sugarcane bagasse cellulose and glutaraldehyde. The adsorption of Cu(II) by SBCMP was pH‐dependent, and the higher removal efficiency of Cu(II) appeared in the range of pH 3.0–6.0. The adsorption isothermal data fitted well with the Langmuir model, and the maximum adsorption capacity of SBCMP was up to 107.5 mg/g. The adsorption kinetics was best described by the pseudo‐second‐order kinetic. The adsorption of Cu(II) by SBCMP was unfavorable at high temperatures, and thermodynamic analyses implied that the adsorption of Cu(II) by SBCMP was an exothermic reaction. Fourier transform infrared spectroscopy (FT‐IR) combined with X‐ray photoelectron spectroscopy (XPS) revealed that Cu(II) adsorption on SBCMP mainly controlled by the nitrogen atoms of NH group in PEI. The results of regeneration cycles showed that SBCMP was suitable for reuse in the adsorption of Cu(II) from aqueous solution. These experimental results suggested that SBCMP is expected to be a new biomass adsorbent with high efficiency in removing Cu(II) from wastewater.

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Section: Resultsmentioning

confidence: 70%

Polyethylenimine‐modified sugarcane bagasse cellulose as an effective adsorbent for removing Cu(II) from aqueous solution

Jiang

Xing

Zhang

et al. 2020

J of Applied Polymer Sci

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“…The pre-treatment of biomass (biomass treatment with chemicals before biochar preparation) usually involves surface oxygen modification to activate the biochar graphite layer and provide reactive oxygen sites for subsequent nitrogen incorporation. The defective carbon and oxygen provide active sites for N-modification (Wan and Li 2018). For example, ammonification of H 2 O 2 preoxidized coconut shell-based biochar resulted in an increase of nitrogen content from 14.43 to 15.48 wt% compared to N-doped biochar without peroxidation.…”

Section: Pre-treatmentmentioning

confidence: 99%

Nitrogen-doped biochars as adsorbents for mitigation of heavy metals and organics from water: a review

Kasera

Kolar

Hall

2022

Biochar

117

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Mitigation of toxic contaminants from wastewater is crucial to the safety and sustainability of the aquatic ecosystem and human health. There is a pressing need to find economical and efficient technologies for municipal, agricultural, aquacultural, and industrial wastewater treatment. Nitrogen-doped biochar, which is synthesized from waste biomass, is shown to exhibit good adsorptive performance towards harmful aqueous contaminants, including heavy metals and organic chemicals. Incorporating nitrogen into the biochar matrix changes the overall electronic structure of biochar, which favors the interaction of N-doped biochar with contaminants. In this review, we start the discussion with the preparation techniques and raw materials used for the production of N-doped biochar, along with its structural attributes. Next, the adsorption of heavy metals and organic pollutants on N-doped biochars is systematically discussed. The adsorption mechanisms of contaminant removal by N-doped biochar are also clearly explained. Further, mathematical analyses of adsorption, crucial to the quantification of adsorption, process design, and understanding of the mechanics of the process, are reviewed. Furthermore, the influence of environmental parameters on the adsorption process and the reusability of N-doped biochars are critically evaluated. Finally, future research trends for the design and development of application-specific preparation of N-doped biochars for wastewater treatment are suggested. Graphical abstract

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“…34,54 The principal interaction should be the π−π interaction between the π−electron system on ACs and aromatic structure of MB, and the hydrogen bonding interactions between the carboxyl/hydroxyl functional groups and MB molecules. 44,55,56 In addition, the electrostatic interactions with cationic MB were introduced as the mAC's surface is negatively charged (O − ). 8,9,12 Additionally, the introduction of iron oxides on the surface of mAC leads to the vastly improved MB adsorption as well, which should be attributed to the enhanced electrostatic interaction between iron oxides and MB molecules.…”

Section: Adsorption Mechanismsmentioning

confidence: 99%

Lignin-Derived Magnetic Activated Carbons for Effective Methylene Blue Removal

Keffer

Hsieh

et al. 2022

Ind. Eng. Chem. Res.

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Large-scale environmental remediation of polluted water requires an effective and recyclable adsorbent produced from an abundant, low-cost, and renewable feedstock via a simple processing procedure. In this work, we demonstrate that lignin-derived magnetic activated carbons (mACs) uniquely satisfy these five criteria for (i) high-performance adsorption, (ii) high regeneration efficiency, (iii) feedstock economic and environmental viability, (iv) single-step processing, and (v) large-scale production. The mACs are synthesized via an efficient cocarbonization and activation with simultaneous impregnation of ferric sulfate. The Langmuir model closely fits the adsorption of methylene blue (MB) by mACs within the temperature range of 298–323 K, where the adsorption capacity increases as temperature increases. This capacity increased from 55.0 mg g–1 to 220.2 mg g–1 with the presence of magnetic nanoparticles. In addition, the magnetite nanoparticles on the activated carbon surface significantly improve its recycling ability with a removal percentage above 95% after four cycles for 5:1 mAC.

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Effect of pre-pyrolysis mode on simultaneous introduction of nitrogen/oxygen-containing functional groups into the structure of bagasse-based mesoporous carbon and its influence on Cu(II) adsorption

Cited by 40 publications

References 64 publications

Polyethylenimine‐modified sugarcane bagasse cellulose as an effective adsorbent for removing Cu(II) from aqueous solution

Polyethylenimine‐modified sugarcane bagasse cellulose as an effective adsorbent for removing Cu(II) from aqueous solution

Nitrogen-doped biochars as adsorbents for mitigation of heavy metals and organics from water: a review

Lignin-Derived Magnetic Activated Carbons for Effective Methylene Blue Removal

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