A two-step hybrid multi-criteria approach to analyze the significance of parameters affecting microwave-assisted pyrolysis

Pritam, Kocherlakota Satya; Puppala, Harish; Palla, Sridhar; Suriapparao, Dadi V.; Basak, Tanmay

doi:10.1016/j.psep.2023.01.064

Cited by 6 publications

(4 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where Y exp experimental values were attained during copyrolysis in TG, while Y cal calculated values were obtained using Equation (1).…”

Section: Simentioning

confidence: 99%

“…Biomass is a viable alternative renewable resource that outperforms other renewable resources in maintaining environmental quality while addressing global energy requirements. 1 Owing to its abundance, renewability, and significant environmental advantages, biomass energy has emerged as one of the most significant sustainable sources of energy, accounting for around 14% of global energy consumption or 38% of that in underdeveloped countries, 2 biomass holds about 50% of the total renewable energy produced. 3 Peach waste is one of the biomass sources which can be used for various energy applications.…”

Section: Introductionmentioning

confidence: 99%

“…It is an endothermic process that produces hydrocarbons in liquid, solid, and gas forms by thermally breaking materials from the exterior to the interior surface. 1 The pyrolysis of coal is inefficient due to the low H/C ratio resulting in significant carbon emissions and low pyrolytic products. 11 Although worldwide an energy policy is acceptable to reduce the share of coal as a primary type of fuel in renewable energy, still occupies a prominent spot in power generation in the future because there are some technologies known as coutilization that are developed to provide sensible and ecologically sustainable energy production.…”

Section: Introductionmentioning

confidence: 99%

“…Pyrolysis is a thermochemical process that converts coal and biomass into valuable products, allowing for variable operating conditions and output. It is an endothermic process that produces hydrocarbons in liquid, solid, and gas forms by thermally breaking materials from the exterior to the interior surface 1 . The pyrolysis of coal is inefficient due to the low H/C ratio resulting in significant carbon emissions and low pyrolytic products 11 .…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Exploring copyrolysis characteristics and thermokinetics of peach stone and bituminous coal blends

Khoja,

Gohar,

Khan

et al. 2023

Energy Science & Engineering

View full text Add to dashboard Cite

Copyrolysis, being an active area of research due to its synergistic impact in utilizing diverse fuel resources, including waste materials, like, peach stone (PS), has been the focal point for this study. PS, produced in vast quantities annually and typically intended for landscaping or insulation purposes, is being studied in combination with low‐grade bituminous coal for energy utilization focusing on thermokinetics and synergistic aspects. Coal‐peach stone (C‐PS) blends were formulated at different ratios and subjected to comprehensive characterization techniques, including ultimate analysis (CHN‐S), gross calorific value (GCV), Fourier transform infrared spectroscopy, and thermogravimetric analyzer (TGA). The ultimate analysis revealed an enhancement in carbon and hydrogen content from 45.38% to 68.08% and from 3.89% to 6.96%, respectively. Additionally, a reduction in sulfur and nitrogen content from 0.54% to 0.11% and from 1.16% to 0.42%, respectively, was observed with an increase in the ratio of PS in the C‐PS blends. The GCV of C‐PS blends ranged from 20.75 to 26.01 MJ kg−1. The pyrolysis conditions simulated in TGA are pivotal for evaluating thermokinetics and synergistic effects. The 60C:40PS blend shows a positive synergy index (SI) value of 0.0203% concerning total mass loss (MLT) indicating a favorable condition for bio‐oil generation. Coats–Redfern model‐fitting method reveals that the activation energy (Ea) of C‐PS blends increases in Section II with the addition of PS, and conversely, it decreases in Section III. The Ea for 100PS and 100C was 106.76 and 45.85 kJ mol−1 through (D3) and (F1), respectively, which was improved through the optimal blend 60C:40PS with an Ea of 94.56 and 27.58 kJ mol−1 through (D3) and (F2), respectively. The values obtained from linear regression prove that the kinetic models are effective while the thermodynamic analysis indicates that the pyrolytic behavior of C‐PS blends is characterized as endothermic, nonspontaneous, and capable of achieving thermodynamic equilibrium more rapidly.

show abstract

“…where Y exp experimental values were attained during copyrolysis in TG, while Y cal calculated values were obtained using Equation (1).…”

Section: Simentioning

confidence: 99%