Pyrolysis-catalytic steam/dry reforming of processed municipal solid waste for control of syngas H2:CO ratio

Penney, Thomas K.; Nahil, Mohamad A.; Williams, Paul T.

doi:10.1016/j.joei.2022.03.001

Cited by 11 publications

(2 citation statements)

References 45 publications

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“…The scarcity of fossil fuel reserves and environmental issues such as global warming and the emission of pollutants from air, water, and soil during their utilization are essential problems associated with the current energetic system. So, biobased fuels can be an attractive energy source relative to traditional energy sources . Within this context, glycerol obtained as a byproduct during biodiesel production via a transesterification reaction seems to be a viable and promising biomass source for synthesis gas (syngas)/hydrogen production .…”

Section: Introductionmentioning

confidence: 99%

“…So, biobased fuels can be an attractive energy source relative to traditional energy sources. 1 Within this context, glycerol obtained as a byproduct during biodiesel production via a transesterification reaction seems to be a viable and promising biomass source for synthesis gas (syngas)/hydrogen production. 2 Aqueous phase reforming, 3,4 steam reforming, 5,6 sorption enhanced steam reforming, 7 chemical looping reforming, 8 autothermal reforming, 3,9 supercritical water reforming, 10 and dry reforming 11 are several processes by which synthesis gas and hydrogen can be produced.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of a Nanostructured Ni/CaO·Al₂O₃ Catalyst for Syngas Production via Glycerol Dry Reforming: Role of the Preparation Method

Pirzadi,

Meshkani

2024

Ind. Eng. Chem. Res.

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Four nickel nanostructure catalysts supported on the CaO•Al 2 O 3 (CA) support were synthesized with different synthesis procedures (i.e., coprecipitation, evaporation-induced self-assembly, sol−gel, and autocombustion) and have been investigated in a glycerol CO 2 -reforming reaction. The nitrogen adsorption−desorption, SEM, XRD, TEM, H 2 -TPR, O 2 -TPO, TGA, and FTIR techniques were used to characterize prepared Ni/CaO•Al 2 O 3 catalysts, and their catalytic performances were evaluated at 600− 750 °C, atmospheric pressure, and a CO 2 /glycerol ratio of 1. It was demonstrated that the preparation route strongly influenced the structural, textural, and chemical features of the as-prepared samples. The maximal conversion of glycerol (ca. 55% at 750 °C) was obtained over the Ni/CA sample prepared by the sol−gel technique. It also exhibited better catalytic stability during the 25 h of the dry reforming reaction. The smaller Ni crystalline size (16.7 nm) and high Ni dispersion with strong interaction with the CaO•Al 2 O 3 support for this sample can result in superior catalytic performance and stability compared with other synthesized samples. This synthesis procedure was sensitive to the solvent type, and the physicochemical property was significantly affected by changing the solvent; therefore, it should be noted as a significant parameter for this preparation method. For the investigation of this parameter, three solvents, including methanol, ethanol, and propanol, were applied in the sol−gel method, and the obtained results imply that employing ethanol as a solvent in this method resulted in achieving better structural properties as well as higher catalytic efficiency in the glycerol CO 2 -reforming reaction. As a result, the simple sol−gel technique was successful for the preparation of the Ni/CaO• Al 2 O 3 sample with high potential as a catalyst for glycerol CO 2 -reforming.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation of a Nanostructured Ni/CaO·Al₂O₃ Catalyst for Syngas Production via Glycerol Dry Reforming: Role of the Preparation Method

Pirzadi,

Meshkani

2024

Ind. Eng. Chem. Res.

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Three-stage pyrolysis–steam reforming–water gas shift processing of household, commercial and industrial waste plastics for hydrogen production

Alshareef,

Sait-Stewart,

Nahil

et al. 2023

Waste Dispos. Sustain. Energy

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Five common single plastics and nine different household, commercial and industrial waste plastics were processed using a three-stage (i) pyrolysis, (ii) catalytic steam reforming and (iii) water gas shift reaction system to produce hydrogen. Pyrolysis of plastics produces a range of different hydrocarbon species which are subsequently catalytically steam reformed to produce H2 and CO and then undergo water gas shift reaction to produce further H2. The process mimics the commercial process for hydrogen production from natural gas. Processing of the single polyalkene plastics (high-density polyethylene (HDPE), low-density polyethylene (LDPE), and polypropylene (PP)) produced similar H2 yields between 115 mmol and 120 mmol per gram plastic. Even though PS produced an aromatic product slate from the pyrolysis stage, further stages of reforming and water gas shift reaction produced a gas yield and composition similar to that of the polyalkene plastics (115 mmol H2 per gram plastic). PET gave significantly lower H2 yield (41 mmol per gram plastic) due to the formation of mainly CO, CO2 and organic acids from the pyrolysis stage which were not conducive to further reforming and water gas shift reaction. A mixture of the single plastics typical of that found in municipal solid waste produced a H2 yield of 102 mmol per gram plastic. Knowing the gas yields and composition from the single plastics enabled an estimation of the yields from a simulated waste plastic mixture and a ‘real-world’ waste plastic mixture to be determined. The different household, commercial and industrial waste plastic mixtures produced H2 yields between 70 mmol and 107 mmol per gram plastic. The H2 yield and gas composition from the single waste plastics gave an indication of the type of plastics in the mixed waste plastic samples. Graphical abstract

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Syngas from residual biogenic waste

Thulasiraman,

Govardhan,

Ganesapillai

2024

Waste Valorization for Bioenergy and Bioproducts

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Pyrolysis-catalytic steam/dry reforming of processed municipal solid waste for control of syngas H2:CO ratio

Cited by 11 publications

References 45 publications

Preparation of a Nanostructured Ni/CaO·Al₂O₃ Catalyst for Syngas Production via Glycerol Dry Reforming: Role of the Preparation Method

Preparation of a Nanostructured Ni/CaO·Al₂O₃ Catalyst for Syngas Production via Glycerol Dry Reforming: Role of the Preparation Method

Three-stage pyrolysis–steam reforming–water gas shift processing of household, commercial and industrial waste plastics for hydrogen production

Syngas from residual biogenic waste

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Pyrolysis-catalytic steam/dry reforming of processed municipal solid waste for control of syngas H2:CO ratio

Cited by 11 publications

References 45 publications

Preparation of a Nanostructured Ni/CaO·Al2O3 Catalyst for Syngas Production via Glycerol Dry Reforming: Role of the Preparation Method

Preparation of a Nanostructured Ni/CaO·Al2O3 Catalyst for Syngas Production via Glycerol Dry Reforming: Role of the Preparation Method

Three-stage pyrolysis–steam reforming–water gas shift processing of household, commercial and industrial waste plastics for hydrogen production

Syngas from residual biogenic waste

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Preparation of a Nanostructured Ni/CaO·Al₂O₃ Catalyst for Syngas Production via Glycerol Dry Reforming: Role of the Preparation Method

Preparation of a Nanostructured Ni/CaO·Al₂O₃ Catalyst for Syngas Production via Glycerol Dry Reforming: Role of the Preparation Method