Fly Ash in Concrete Production: A Legal and Regulatory Review of Environmental Impacts
2024
M. Z. M. Nomani, Omair Shaquib and Mansi Sharma
From 2016 to 2040, global energy demand is expected to increase by almost 50%. A substantial proportion of this expansion will remain concentrated in emerging economies, predominantly India and China. The energy demand, namely for coal, will increase due to reasons such as population growth, industrialization, and the remarkable expansion of the middle class. In India, the coal employed is categorized as low-grade and exhibits a notable ash content, ranging from 30 to 45 percent. Using lignite or coal in thermal power stations leads to generating a significant quantity of fly ash. The issues of controlling fly ash due to its propensity to cause air and water pollution must be addressed efficiently, especially given the large volume of ash produced and the environmental impact it causes in India. This article thoroughly examines Indian fly ash, encompassing its distinctive attributes, a wide array of uses, environmental ramifications, and regulatory structure. The volume of fly ash produced has experienced a significant rise in the last ten years, primarily because coal-fired thermal power plants are responsible for meeting more than 70% of the nation’s electricity demands. Currently, India is responsible for the production of about 180 million metric tonnes of fly ash. Moreover, this article provides a thorough examination of the global landscape about the manufacturing and utilization of fly ash, with a particular focus on India.
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