Enhancement of the production of aromatics and bio-syngas from microwave ex-situ pyrolysis based on Zn/Zr modified biochar and multi-catalysts

Shi, Xiaopeng; Li, Pan; Wang, Xianhua; Song, Jiande; Fang, Shuqi; Chang, Chun; Pang, Shusheng

doi:10.1016/j.energy.2022.125307

Cited by 29 publications

(4 citation statements)

References 48 publications

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“…On one hand, physical thermal desorption is dominant at low temperature, and biochar can only promote diffusion with porous structures but has difficulty altering oil compositions. On the other hand, biochar has beenreported to promote aromatic formation, while aromatics are dominant at low temperature, contributing to negligible effect. , When the temperature exceeds 500 °C, the proportion of aromatics in liquid products decreases for AP of OS LH . However, BCP of OS LH exhibits obvious variations compared with AP of OS LH , and aromatics content elevates again with the presence of biochar.…”

Section: Resultsmentioning

confidence: 99%

Biochar-Assisted Catalytic Pyrolysis of Oily Sludge to Attain Harmless Disposal and Residue Utilization for Soil Reclamation

Lin

et al. 2023

Environ. Sci. Technol.

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Pyrolysis of oily sludge (OS) is a feasible technology to match the principle of reduction and recycling; however, it is difficult to confirm the feasible environmental destination and meet the corresponding requirements. Therefore, an integrated strategy of biochar-assisted catalytic pyrolysis (BCP) of OS and residue utilization for soil reclamation is investigated in this study. During the catalytic pyrolysis process, biochar as a catalyst intensifies the removal of recalcitrant petroleum hydrocarbons at the expense of liquid product yield. Concurrently, biochar as an adsorbent can inhibit the release of micromolecular gaseous pollutants (e.g. HCN, H 2 S, and HCl) and stabilize heavy metals. Due to the assistance of biochar, pyrolysis reactions of OS are more likely to occur and require a lower temperature to achieve the same situation. During the soil reclamation process, the obtained residue as a soil amendment can not only provide a carbon source and mineral nutrients but can also improve the abundance and diversity of microbial communities. Thus, it facilitates the plant germination and the secondary removal of petroleum hydrocarbons. The integrated strategy of BCP of OS and residue utilization for soil reclamation is a promising management strategy, which is expected to realize the coordinated and benign disposal of more than one waste.

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Section: Resultsmentioning

confidence: 99%

Biochar-Assisted Catalytic Pyrolysis of Oily Sludge to Attain Harmless Disposal and Residue Utilization for Soil Reclamation

Lin

et al. 2023

Environ. Sci. Technol.

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“…While the catalyst is usually placed downstream of the reactor, the biomass is introduced from the hopper and heated to the required temperature before it gets to the location of the catalyst. The interaction of the heated feedstock with the catalyst enhances product formation and ensures minimum residence time [45]. In recent studies, conventional fast and flash pyrolysis have been upgraded to catalytic fast pyrolysis (Fig.…”

Section: Catalytic Pyrolysismentioning

confidence: 99%

Advanced Thermochemical Conversion Approaches for Green Hydrogen Production from Crop Residues

Awogbemi,

Ojo,

Adeleye

2024

JRM

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The huge volumes of crop residues generated during the production, processing, and consumption of farm products constitute an ecological nuisance when ineffectively managed. The conversion of crop residues to green hydrogen is one of the sustainable management strategies for ubiquitous crop residues. Production of green hydrogen from crop residue sources will contribute to deepening access to clean and affordable energy, mitigating climate change, and ensuring environmental sustainability. However, the deployment of conventional thermochemical technologies for the conversion of crop residues to green hydrogen is costly, requires long residence time, produces low-quality products, and therefore needs to be upgraded. The current review examines the conventional, advanced, and integrated thermochemical conversion technologies for crop residues for green hydrogen production. After a brief overview of the conventional thermochemical techniques, the review delves into the broad narration of advanced thermochemical technologies including catalytic pyrolysis, microwave pyrolysis, co-pyrolysis, hyropyrolysis, and autothermal pyrolysis. The study advocates the deployment of integrated pyrolysis, anaerobic digestion, pyrolysis, and gasification technologies will ensure scalability, decomposition of recalcitrant feedstocks, and generation of high grade green hydrogen. The outlook provides suggestions for future research into cost-saving and sustainable integrated technologies for green hydrogen production towards achieving carbon neutrality and a circular bio-economy.

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“…Fig. 5 shows the number of chemical bonds in the solid residue [37]. In the 758-670 cm −1 range, the vibration of C═C is displayed in FTIR spectra [38].…”

Section: Ftir Analysis Of Solid Residuementioning

confidence: 99%

Microwave‐Driven Pyrolysis of Plastic Waste into Carbon Nanotubes and Hydrogen Using Spinel Ferrites

Shoukat,

Naz,

Yaseen

et al. 2024

Chem Eng & Technol

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In this study, NiFe2O4, ZnFe2O4, and MgFe2O4 catalysts are utilized to decompose plastic into hydrogen gas, liquids, and carbon nanotubes. Ferrite nanoparticles worked as a catalyst and heat susceptors for microwaves. MgFe2O4 catalyst resulted in highly structured carbon residue with fewer impurities than other catalysts. The oil yield of 13.5, 14, and 9.5 wt. % was obtained with NiFe2O4, ZnFe2O4, and MgFe2O4, respectively. Similarly, gas evolution was about 14, 13, and 12.5 wt. %, respectively. MgFe2O4 displayed superior H2 production efficiency of 90 % compared to the other two catalysts. These findings suggest high activity of MgFe2O4 catalyst compared to NiFe2O4 and ZnFe2O4 catalysts. This catalyst also showed stronger magnetic characteristics and reactivity.

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Enhancement of the production of aromatics and bio-syngas from microwave ex-situ pyrolysis based on Zn/Zr modified biochar and multi-catalysts

Cited by 29 publications

References 48 publications

Biochar-Assisted Catalytic Pyrolysis of Oily Sludge to Attain Harmless Disposal and Residue Utilization for Soil Reclamation

Biochar-Assisted Catalytic Pyrolysis of Oily Sludge to Attain Harmless Disposal and Residue Utilization for Soil Reclamation

Advanced Thermochemical Conversion Approaches for Green Hydrogen Production from Crop Residues

Microwave‐Driven Pyrolysis of Plastic Waste into Carbon Nanotubes and Hydrogen Using Spinel Ferrites

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