Fly Ash-Activated Carbon Powder Composites for Dyes and Heavy Metals Removal
Advanced wastewater treatment requires highly efficient substrates, able to insure in a single step process the water discharge requirements. The paper the results obtained in the simultaneous removal of heavy metals and dyes, using a composite powder of fly ash and activated carbon. The results show that adding a small amount of activated carbon in a powder mixture with modified fly ash is highly effective in removing cadmium from wastewaters also containing dyes (methylen blue or methyl orange). Chemisorption is the likely mechanism governing this process.
Yansheng Yin and Xin Wang
M. Visa et al., "Fly Ash-Activated Carbon Powder Composites for Dyes and Heavy Metals Removal ", Advanced Materials Research, Vols. 79-82, pp. 243-246, 2009