Year: 2024
Type: dissertation
Abstract: This investigation explores innovative approaches for carbon-negative CO2 mineralization in industrial processes, aiming to significantly mitigate greenhouse gas emissions. It focuses on two primary strategies: integrating a modified Solvay process with steelmaking slag and assessing MgO for soil weathering. The integration of the modified Solvay process synthesizes sodium bicarbonate from saline brines using steelmaking byproduct, EAF slag, addressing both CO2 emissions and brine disposal issues. The second strategy evaluates the potential of MgO, a byproduct of future carbon-negative hydrometallurgical processes, as a sustainable soil amendment. MgO's slower, controlled release of alkalinity compared to calcium oxide and dolomite enhances soil health and facilitates long-term CO2 sequestration through the formation of carbonates. Advanced analytical techniques were employed to characterize the morphological and chemical properties of the minerals and monitor their transformations. The findings highlight the potential of these approaches to promote sustainable industrial practices and contribute to global climate change mitigation.
Author: Anto, Shadman Anto
Institution: University of Guelph
Language: English
Subfield: Environmental Engineering
Field: Environmental Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7204611364