Upgrading from batch to continuous flow process for the pyrolysis of sugarcane bagasse: Structural characterization of the biochars produced

Veiga, Paulo Apolinário da Silva; Cerqueira, Matheus Henrique; Gonçalves, Mayara Gabriela; Matos, Tassya Thaiza da Silva; Pantano, Glaucia; Schultz, Juliana; Andrade, Jaílson Bittencourt de; Mangrich, Antônio S.

doi:10.1016/j.jenvman.2021.112145

Cited by 42 publications

(9 citation statements)

References 47 publications

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“…Particulate material, rising from deteriorated regions of the bers, is present in some surface regions, together with cracks. The structural complexity of the natural material is responsible for this heterogeneity and it was also reported by (Veiga et al 2021;Liu et al 2022a).…”

Section: Characterization Of the Adsorbentsmentioning

confidence: 58%

Plasma-engineered sugarcane bagasse: A novel strategy for efficient mercury removal from aqueous solutions

Salas,

Antunes,

Rangel

et al. 2024

Preprint

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Metal ion adsorption using agro-industrial residues has shown promising results in remediating contaminated waters. However, adsorbent effectiveness relies on their properties, often necessitating processing for modification. Considering this, plasma treatment is effective in modifying material surfaces physically and chemically. This study investigated the modification of sugarcane bagasse (SB) using plasma-treated and evaluated its efficacy as a novel adsorbent for mercury removal from aqueous solutions. SB underwent low-temperature plasma treatment with sulfur hexafluoride (SF6) as the working gas, varying treatment times (2, 30, and 60 minutes) and fixed powers (80, 190, and 300 W) at 16 Pa pressure. Characterization via scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS/SEM), Fourier transform infrared spectroscopy (FTIR) and zero point of charge (pHpzc) revealed significant structural changes like increased in porosity and alteration in proportion atomic. Additionally, the successful incorporation of fluorine was confirmed in all treatment conditions, while sulfur was detected in only some samples. Amongst the tested conditions, the SB treated with 300 W for 60 minutes demonstrated the highest mercury removal efficiency, achieving an impressive 83.67% removal rate compared to untreated SB, which yielded only 57.95%. The adsorption mechanism exhibited both physical and chemical behavior, with chemisorption being the dominant process. The Freundlich model provided the best fit to the experimental data, with an R2 value of 0.97. In conclusion, plasma treatment can be a promising alternative for improving the physical and chemical characteristics of SB adsorbents, thereby improving their efficiency in removing mercury from aqueous solutions.

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Section: Characterization Of the Adsorbentsmentioning

confidence: 58%

Plasma-engineered sugarcane bagasse: A novel strategy for efficient mercury removal from aqueous solutions

Salas,

Antunes,

Rangel

et al. 2024

Preprint

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“… 47 Interestingly, the C content of ABL@KOH was the lowest among the biochar samples, indicating a lower carbonization degree. 48 Notably, the O/C and (O + N)/C ratios of the ABL@ZnCl 2 and ABL@H 3 PO 4 samples were the highest, proving that the samples had the highest polarity and could provide more adsorption sites in the subsequent adsorption experiment, which was conducive to the adsorption process. Moreover, it has been reported that the activation ingredient is one of the determining factors in obtaining high-quality CHM biochar.…”

Section: Resultsmentioning

confidence: 88%

“…The decrease in the H/C ratio indicated higher aromaticity, whereas the increased O/C and (O + N)/C ratios implied lower polarity, which might be attributed to the stronger hydrophobicity and fewer surface polar functional groups . Interestingly, the C content of ABL@KOH was the lowest among the biochar samples, indicating a lower carbonization degree . Notably, the O/C and (O + N)/C ratios of the ABL@ZnCl 2 and ABL@H 3 PO 4 samples were the highest, proving that the samples had the highest polarity and could provide more adsorption sites in the subsequent adsorption experiment, which was conducive to the adsorption process.…”

Section: Resultsmentioning

confidence: 97%

Biochar Derived from Chinese Herb Medicine Residues for Rhodamine B Dye Adsorption

Zhao

et al. 2023

ACS Omega

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In this study, one well-known CHM residue (Atropa belladonna L., ABL) was used to prepare biochar capable of adsorbing rhodamine B (RhB) with an ultrahigh surface area for the first time. Three micropore-rich ABL biochars including ABL@ ZnCl 2 (1866 m 2 /g), ABL@H 3 PO 4 (1488 m 2 /g), and ABL@KOH (590 m 2 /g) were obtained using the one-step carbonization method with activation agents (ZnCl 2 , H 3 PO 4 , and KOH) via chemical activation and carbonization at 500 °C, and their adsorption performance for RhB was systematically studied with adsorption kinetics, isotherms, and thermodynamics. Through pore diffusion, π−π interaction, and hydrogen bonding, ABL biochar had excellent adsorption performance for RhB. Moreover, when C 0 was 200 mg/L, biochar dosage was 1 g/L, and the contact time was 120 min; the maximum RhB adsorption capacity and removal efficiency on ABL@ZnCl 2 and ABL@H 3 PO 4 were 190.63 mg/g, 95% and 184.70 mg/g, 92%, respectively, indicating that it was feasible to prepare biochar from the ABL residue for RhB adsorption. The theoretical maximum adsorption capacities of ABL@ZnCl 2 and ABL@H 3 PO 4 for RhB were 263.19 mg/g and 309.11 mg/g at 25 °C, respectively. Furthermore, the prepared biochar showed good economic applicability, with pay back of USD 972/t (ABL@ZnCl 2 ) and USD 987/t (ABL@H 3 PO 4 ), respectively. More importantly, even after five cycles, ABL@H 3 PO 4 biochar still showed great RhB removal efficiency, suggesting that it had a good application prospect and provided a new method for the resource utilization of traditional CHM residues. Additionally, pore diffusion, π−π interactions, and hydrogen bonding all play roles in the physical adsorption of RhB on ABL biochar. π−π interactions dominated in the early stage of RhB adsorption on ABL@H 3 PO 4 , while pore diffusion played a crucial role in the whole adsorption process on both adsorbents.

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“…This indicated that the proportion of crystalline carbon increased with the activation temperature. 36 The high ratio also suggested an increased defect density in the activated TMFB sample. 37 …”

Section: Resultsmentioning

confidence: 98%

Functional utilization of biochar derived from Tenebrio molitor feces for CO₂ capture and supercapacitor applications

et al. 2022

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Upgrading from batch to continuous flow process for the pyrolysis of sugarcane bagasse: Structural characterization of the biochars produced

Cited by 42 publications

References 47 publications

Plasma-engineered sugarcane bagasse: A novel strategy for efficient mercury removal from aqueous solutions

Plasma-engineered sugarcane bagasse: A novel strategy for efficient mercury removal from aqueous solutions

Biochar Derived from Chinese Herb Medicine Residues for Rhodamine B Dye Adsorption

Functional utilization of biochar derived from Tenebrio molitor feces for CO₂ capture and supercapacitor applications

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Upgrading from batch to continuous flow process for the pyrolysis of sugarcane bagasse: Structural characterization of the biochars produced

Cited by 42 publications

References 47 publications

Plasma-engineered sugarcane bagasse: A novel strategy for efficient mercury removal from aqueous solutions

Plasma-engineered sugarcane bagasse: A novel strategy for efficient mercury removal from aqueous solutions

Biochar Derived from Chinese Herb Medicine Residues for Rhodamine B Dye Adsorption

Functional utilization of biochar derived from Tenebrio molitor feces for CO2 capture and supercapacitor applications

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Product

Resources

About

Functional utilization of biochar derived from Tenebrio molitor feces for CO₂ capture and supercapacitor applications