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Research Article
Xianqin Lu
Qilu University of Technology
Corresponding Author
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Carbon spheres, as a widely used carbon material, has attracted extensive attentions. The hydrothermal carbonization (HTC) method was a promising candidate for production of carbon-sphere. But the raw lignocellulose was natural resistant and hardly transformed into the carbon-spheres during HTC. Herein, acidic lithium bromide (LiBr) was supplied in the HTC process to break the resistance of lignocellulose and promoted the nano-carbon spheres forming in mild conditions: 140°C for 150 min. The carbon spheres from raw corn stover showed decent morphology properties and abundant functional groups, which was better than that from pine and poplar wood. It led to the high removal efficiency of the biochar-corn stover to both heavy ions and methyl orange in the waste water. Meanwhile, the filtrate under the optimal reaction was already reused. After five runs, the recycling showed slight effect on the morphology properties and the adsorption capability of biochar. These results verified the practical production of biochar spheres from lignocellulose in mild conditions, which provided more potential for the synthesis of novel biomass-based materials for wide applications.
Keywords
corn stover, carbon spheres, acidic LiBr, Cr(VI), methyl orange
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This preprint is under consideration at Cellulose. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research Article
Xianqin Lu
Qilu University of Technology
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Under Review
Version 1
Posted 22 Mar, 2021
No community comments so far
Reviewers invited
Invitations sent on 18 Mar, 2021
Reviews received
Received 18 Mar, 2021
Editor invited
On 17 Mar, 2021
Editor assigned
On 08 Mar, 2021
First submitted
On 08 Mar, 2021
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Carbon spheres, as a widely used carbon material, has attracted extensive attentions. The hydrothermal carbonization (HTC) method was a promising candidate for production of carbon-sphere. But the raw lignocellulose was natural resistant and hardly transformed into the carbon-spheres during HTC. Herein, acidic lithium bromide (LiBr) was supplied in the HTC process to break the resistance of lignocellulose and promoted the nano-carbon spheres forming in mild conditions: 140°C for 150 min. The carbon spheres from raw corn stover showed decent morphology properties and abundant functional groups, which was better than that from pine and poplar wood. It led to the high removal efficiency of the biochar-corn stover to both heavy ions and methyl orange in the waste water. Meanwhile, the filtrate under the optimal reaction was already reused. After five runs, the recycling showed slight effect on the morphology properties and the adsorption capability of biochar. These results verified the practical production of biochar spheres from lignocellulose in mild conditions, which provided more potential for the synthesis of novel biomass-based materials for wide applications.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
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