Prasenjeet Chakraborty

Research Field

Trace element

10.1016/j.marpolbul.2019.110520

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Citations (12)

Soil pollution in Indian coal mines, available remediation techniques and rock dust application: A review

Journal of Earth System Science (2023)

Prasenjeet Chakraborty Siddharth Singh Bodhisatwa Hazra

10.1007/s12040-023-02163-5

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Pyrolysis and combustion behavior of few high-ash Indian coals

International Journal of Coal Preparation and Utilization (2020)

Gaurav Raghuvanshi Prasenjeet Chakraborty Bodhisatwa Hazra A.K. Adak Pradeep Kumar Singh

In this study, three high-ash Indian sub-bituminous coals of different thermal maturities from three different open cast mines of Raniganj basin, eastern India, were studied to understand their combustion and pyrolysis behavior. The combustion analyses were performed under three different heating rates (5°C, 10°C, and 15°C/min). From the thermograms of TG-DTG pyrolysis curves, it was observed that the overall pyrolysis reaction can be deduced into four different temperature regions with each region showing unique properties, and those regions are inherent moisture loss, prior to primary pyrolysis, primary pyrolysis, and secondary pyrolysis regions. The main pyrolysis reaction occurs in the primary pyrolysis region for all the samples but a significant devolatilization has also been seen for the early oil window mature noncoking coal in the secondary pyrolysis region. The kinetic parameters were also evaluated for both combustion and pyrolysis analysis. X-ray diffraction revealed that this sample consists of a significant amount of siderite and pyrite, and consequently showed distinct behavior. It was observed that the pyrolysis properties and kinetics were closely related to their complex mechanisms and reactions. Rock-Eval pyrolysis also confirmed the presence of siderite in the sample, which decomposed simultaneously with the organic-matter during pyrolysis.

Bituminous coal

10.1080/19392699.2020.1855582

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Effect of a tropical cyclone on the distribution of heavy metals in the marine sediments off Kameswaram, Southeast coast of India

Marine Pollution Bulletin (2021)

V. Gopal R. R. Krishnamurthy T. Sreeshma Prasenjeet Chakraborty Chellamuthu Sabari Nathan

10.1016/j.marpolbul.2021.112741

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Comparative thermal behavior, Rock-Eval signature and kinetics of distinct thermally mature vitrain, fusain lithotypes and coals from India

International Journal of Coal Preparation and Utilization (2022)

Bodhisatwa Hazra David A. Wood Prasenjeet Chakraborty Deependra Pratap Singh Santi Gopal Sahu

Thermal and chemical properties of coals, and the lithotypes they contain, provide useful insight to their combustion and reaction behaviors. Analysis of thermal properties, proximate parameters, Rock-Eval signatures, and petrographic characteristics of vitrain, fusain lithotypes, and bulk coal samples of distinct ranks from Raniganj (high volatile bituminous A rank, HvbA) and Jharia (medium volatile bituminous rank, Mvb) basins (India) reveal contrasting features. The HvbA bulk coal is identified as the most reactive. HvbA and Mvb vitrains display comparable reactivities despite their distinct thermal maturities. Mvb vitrain generates spiky pyrograms, due to melt formation and bubble bursting typical of coking vitrains. Mvb fusian is more prone to self-heating, being characterized by an exothermic thermogram peak due to its greater propensity to adsorb oxygen. In contrast, HvbA fusain, with higher VM and ash, displays least reactivity. These features mean that Mvb coals require higher temperatures for ignition and consume more energy than HvbA coals. Multi-heating-rate Rock-Eval S2 pyrograms show excellent Arrhenius equation simulation fits for the HvbA and Mvb bulk coals and lithotypes, enabling determination of activation energies (E) and pre-exponential factors (A). Distinctive E and A values of the HvbA bulk coal are a consequence of its high liptinite content.

Exothermic reaction

10.1080/19392699.2022.2118261

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Critical insights from Rock-Eval analysis of vitrains

International Journal of Coal Geology (2021)

Bodhisatwa Hazra Deependra Pratap Singh Peter J. Crosdale Vivek Singh Pradeep Kumar Singh

Bursting

Crucible (geodemography)

10.1016/j.coal.2021.103717

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Citations (19)