| dc.description.abstract | To prevent CO2-induced climate change, the world is quickly moving toward a carbon-neutral society by using electric vehicles, renewable energy sources, and other energy sources, which demand more resources than traditional ones in terms of materials, minerals, and metals. In this regard, recycling processes of rare earth elements (REEs), metals, plastic, and glass from secondary sources with a zero-waste strategy have become more important in order to reduce environmental damage and bring them into the economy when primary mineral resources are running out. Therefore, in this Research Topic, studies on effective, non-hazardous, long-term, and ecological recycling processes of solid wastes, including by-products from industrial processes containing metals have been compiled.
This Research Topic, which selects and collects eleven original research papers and one mini-review paper that has conducted studies on this field, sheds fresh light on critical aspects providing crucial scientific knowledge that will benefit future research. The first part of the articles collected is related to the release and migration of heavy metals in solid wastes. Zhang et al. calculated the environmental vulnerability factors affecting the dissolution of heavy metals in fly ash from a thermal power plant. Fly ash has been suggested as a possible soil conditioner and additive that might be used to enhance reclamation soil in coal mining subsidence sites. Zheng et al. analyzed how low molecular weight organic acids such as citric acid and malic acid impacted the migratory characteristics of Pb in polluted soils. Due to its capacity to activate Pb, the use of citric acid has been suggested as a technique that can improve the efficacy of remediating reclaimed soil. Since it has been reported that the smelting technique has the potential for innocuous processing to overcome the waste Research Topic in the electrolytic manganese industry by creating glass ceramics using electrolytic manganese slag as feedstock and solidified heavy metal constituents (Sun et al., 2020), Wang et al. studied the process of heavy metal solidification and stability in glass-ceramics containing electrolytic manganese slag. It has been concluded that the glass-ceramic system’s interwoven pattern of glass and crystal phases also contributed to the improved curative influence of heavy metals. In addition, Hao et al. explored the possibility of making glass ceramics from wastes such as coal gasification slag and petrochemical incineration fly ash (PIFA) by trapping dangerous toxic metals in their crystalline-noncrystalline multistage composition. | tr |
