| Abstract |
The main contributor to global warming is carbon dioxide (CO2), herewith referred to as a greenhouse gas, with a growth of nearly 2.7%, 60% above that recorded around late twentieth century. Globally, the regulation and minimization of CO2 have consequently become a consensus. In South Africa (SA), most CO2 releases are from burning coal and future forecasts show that CO2 releases will increase more and more should there be no counter-progress in the creation of carbon capture technologies (CCT). Additionally, by integrating CCT into the main sources of anthropogenic CO2 releases, like coal power plants (CPPs), challenges of CO2 releases will be brought to the barest minimal. Despite the challenge it presents, yet an inherent research opportunity therein, with possibility of developing a novel CCT. Hence, this paper presented a review on the theme "hydrotalcite-derived material from waste metal dust, a solid adsorbent for CO2 capture: Challenges and opportunities in SA's CPPs". This theme was subdivided into the following subthemes: challenges and opportunities inherent in SA's CPPs; review of past and current publications on CO2 capture from CPP. The conclusions reached are that the use of waste metal dust and/or coal fly ash to produce solid adsorbents will go a long way to saving significant cost of managing CO2 emissions, while the conversion of this waste to product amongst other benefits will strengthen the goal of achieving a circular economy in the mining industry. |
