Metallurgical Wastes Employed as Catalysts and Photocatalysts for Water Treatment: A Review
| Autor: | Edwin Avella, Rafael Schouwenaars, R.M. Ramírez-Zamora, Claudia Victoria Montoya-Bautista |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Municipal solid waste
hydrogen production Geography Planning and Development TJ807-830 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law TD194-195 01 natural sciences Ferromanganese Renewable energy sources slag Catalysis GE1-350 Environmental impact assessment valorization 0105 earth and related environmental sciences Hydrogen production Environmental effects of industries and plants Renewable Energy Sustainability and the Environment Metallurgy Slag low-cost catalyst water treatment 021001 nanoscience & nanotechnology Environmental sciences visual_art Photocatalysis visual_art.visual_art_medium Environmental science Water treatment metallurgical wastes 0210 nano-technology |
| Zdroj: | Sustainability, Vol 11, Iss 9, p 2470 (2019) |
| ISSN: | 2071-1050 |
| DOI: | 10.3390/su11092470 |
| Popis: | Metallurgical slags are a mass-produced industrial solid waste, often destined to landfills; the volumes disposed represent an environmental burden. Over the last three decades, applications have been found for these wastes, mainly as a low-cost additive in building materials. More recently, their unique chemical properties have attracted attention to produce high-added-value materials for environmental applications, to be used as adsorbents, catalysts, or a source of reactive species in environmental engineering. Such uses can be classified as a function of the added value generated, technological complexity, and environmental impact. This review will focus specifically on the modification and use of slags for catalysis, photocatalysis, and photocatalytic production of hydrogen, which have received relatively little attention in literature. A summary will be presented about the general requirements for using unmodified slags as well as slag processed under alkaline or acidic conditions for advanced oxidation processes. Then, an overview will be given of the use of slags as photocatalysts in water treatment, organized according to the origin of the product (steel, copper, magnesium, ferromanganese), as well as emerging reports on the photocatalytic production of hydrogen, in contrast to the use of highly specific titania-based products developed for the same purpose. |
| Databáze: | OpenAIRE |
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