Massive Fe/C-rich wastes are generated from water treatment, surface finishing, refining and chemical industries. The chemistry in recycling environmental products from the Fe/C-rich wastes has been advanced dramatically during the past decade. New strategies and novel processes have been developed to significantly reduce the production, environmental impacts, and disposal costs of Fe/C-rich wastes. Products from recycling Fe/C-rich wastes using clean production processes have shown great potential in environmental pollution control. Those products have been successfully used as an adsorbent, flocculant, catalyst, precipitant, demulsifying reagent, conditioning reagent, filter material, and membrane in treating waste streams and clean up environmental spills and pollutant releases. Green chemistry has advanced the concept of “waste to waste” through minimizing consumption of freshwater, chemical reagents, and energy in the recycling processes, which can play an important role in the circular economy.

Treating wastes with wastes has become the main direction for recovering resources from Fe/C rich wastes. Recycling the wastes into products for environmental pollution control should focus on
advanced chemistry concepts to design reaction routes and optimize reaction conditions for the improvement of productivity and performance stability of the products. Reducing the use of hazardous
chemical reagents, production of secondary wastes, and energy consumption should be emphasized as well in wastes recycling to achieve clean production and minimum carbon emission in the recycling processes. Green chemistry has opened up new avenues for recycling of Fe/C-rich wastes into environmental products through cleaner reaction routes and lower energy consumption without generating secondary wastes.

We welcome original research, review, mini review, perspective article, and short communication on topics of recycling wastes using green chemistry for environmental pollution control. Specific
themes include, but not limited to:

• Theoretical analysis, experimental research, project-scale findings within the chemical context of recycling Fe/C-rich wastes into environmental products
• Green chemistry for design, synthesis, and application of recycled products in environmental pollution control
• Advanced chemical strategy in the enhancement of recycled products for water/gas purification, wastewater treatment, waste disposal, and soil/groundwater remediation
• Clean production for the chemical conversion of Fe/C-rich wastes to novel environmental products.

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