A Technical Feasibility Study and Environmental Impacts of Green Cement Production from Recycled Fly Ash in Pakistan | [Journal of Pakistan Institute of Chemical Engineers • 2021]

Author(s):

1. H. M. Masood: Department of Chemical Engineering, NFC Institute of Engineering & Fertilizer Research, Faisalabad, Pakistan

2. S. Haider: Department of Chemical Engineering, NFC Institute of Engineering & Fertilizer Research, Faisalabad, Pakistan

3. U. Javed: Department of Chemical Engineering, NFC Institute of Engineering & Fertilizer Research, Faisalabad, Pakistan

4. S. Hussain: Department of Chemical Engineering, NFC Institute of Engineering & Technology, Multan, Pakistan

5. N. Ali: Department of Chemical Engineering, NFC Institute of Engineering & Fertilizer Research, Faisalabad, Pakistan

6. M. Ashraf: Department of Chemical Engineering, NFC Institute of Engineering & Fertilizer Research, Faisalabad, Pakistan

Abstract:

In contrast to traditional Portland cement, green cement is an environmental friendly and sustainable option that offers a reduction in greenhouse gas (especially carbon dioxide) emissions. Green cement comprises of a higher component of alumino-silicates, in turn, which has increased the demand for renewable energy and recycling of waste materials. This study presents a technical discussion on the possibilities for producing green cement in Pakistan. Although a variety of alumino-silicate-based materials like rice husk, sugar cane and furnace slag are studied, fly ash is a raw material of choice for green cement owing to its availability, lower costs, and eases in conversion, energy savings and low green houses emissions. The study also provide estimates of fly ash can replace 80-100% of the limestone used for the traditional Portland cement in Pakistan, however, requiring a sodium-based activator. The study concludes with an overview of the site selection and identifies a suitable area in the Sindh region of Pakistan.

Page(s): 33-39

DOI: DOI not available

Published: Journal: Journal of Pakistan Institute of Chemical Engineers, Volume: 49, Issue: 1, Year: 2021

Keywords:

Limestone , Particle size , Fly Ash , Loss on Ignition LOI , Green Cement , Clinker

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