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Study on energy use and carbon emission from manufacturing of OPC and blended cements in India

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Abstract

The demand for production of cements is ever increasing to meet the infrastructure development globally. The energy and emission factors available for cements in most of the life cycle assessment (LCA) databases may not exactly suit for all the geographical locations. The main challenge in Indian scenario is the absence of database for LCA study. This study attempts to develop the energy and emission factors for the manufacturing of cements in Indian context. In the present study, five different cement manufacturing plants located in north, south, east, west and central zones of India are considered to assess the energy dissipation and carbon dioxide emission involved during the production of ordinary Portland cement (OPC). Most of the data is collected from the field, so that the energy and emission factors determined will be suitable for the zonal study. The study is then extended to assess the energy consumption and carbon dioxide emission for three blended cements, viz. Portland Pozzolan cement (PPC), Portland slag cement (PSC) and composite cement (CC) with permissible known replacement levels of fly ash, granulated blast furnace slag and both fly ash and slag, respectively. The average energy use and carbon emission is found to be on higher side in India by 15.14% and 12.64%, respectively, compared to other countries in manufacturing of cements. An average energy consumption in manufacturing of PPC, PSC and CC is found to be respectively 24.5%, 35.3% and 43.13% less compared to that of OPC. The CO2 emission intensity for OPC is found to vary between 893 and 940 kg/tonne of cement from five different zones, and an average of respectively 24.8%, 40.97% and 47.18% lower CO2 emission was observed from PPC, PSC and CC compared to OPC. From the inventory results, CC has proven to be a more sustainable cement with low energy consumption and lower CO2 emission compared to other cements.

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Acknowledgements

This study was conducted for the partial fulfilment of PhD research work under Ministry of Human Resource Development (MHRD) fellowship at National Institute of Technology Warangal, India.

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CSK: conceptualization, methodology, investigation, writing—original draft, supervision.

RKP: validation, formal analysis, visualization, writing—review and editing.

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Correspondence to Chandra Sekhar Karadumpa.

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I, Chandra Sekhar Karadumpa (corresponding author), on behalf of all the authors give my consent for the publication of identifiable details, which can include photograph(s) and/or videos and/or case history and/or details within the text to be published in the Journal.

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The authors declare no competing interests.

The manuscript is not submitted to any other publications. The submitted work is original and is not published elsewhere in any form or language (partially or in full). This work is a complete study and has not been split into several parts to increase the quantity of submissions. The findings from previous studies considered in the present work are properly cited and acknowledged.

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Karadumpa, C.S., Pancharathi, R.K. Study on energy use and carbon emission from manufacturing of OPC and blended cements in India. Environ Sci Pollut Res 31, 5364–5383 (2024). https://doi.org/10.1007/s11356-023-31593-3

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  • DOI: https://doi.org/10.1007/s11356-023-31593-3

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