Experimental Investigation of the Decarburization Behavior of Medical Waste Incinerator Fly Ash (MWIFA)

Abstract

The objective of the research was to compare the flotation performance of medical waste incinerator fly ash (MWIFA) by considering two methods: the cyclonic-static micro-bubble flotation column (FCSMC) method and conventional flotation cell (CFC) method. The results indicated that for FSCMC, the optimum parameters were kerosene = 3.5 g/kg·ash, methyl isobutyl carbinol (MIBC) = 0.2 g/kg·ash, Tween 80 = 7.5% of kerosene concentration, slurry concentration = 100 g/L, and pump speed = 380 r/min. The optimized conditions resulted in a higher dioxin removal efficiency (90.98%), carbon removal efficiency (91.88%) and lower loss on ignition (LOI) (4.96%). The data obtained from the CFC under different optimum operating conditions were 88.65%, 90.63% and 5.68%, respectively. FSCMC was proven to be more efficient for the flotation of MWIFA than CFC.

Recent Advances in Methods for the Recovery of Carbon Nanominerals and Polyaromatic Hydrocarbons from Coal Fly Ash and Their Emerging Applications

“…CFA nanomaterial containing C can be improved either by dry or wet-based methods such as electrostatic separation, froth flotation, separation based on density, and a few more [63,64]. The various methods that are used for carbon recovery or UC from CFA are depicted below in schematic Figure 1, and their summarized form is given in Table 2.…”

“…Among the wet separation methods, FF is one of the most reliable and economical technique for the extraction of UC or carbon particles from CFA [64,65]. The extraction of UC from CFA by FF applies a sequential separation step which has to be further separated.…”

Numerical Investigation of a Portable Incinerator: A Parametric Study

“…It means that a narrow gap exists regarding the full understanding of the combustion behavior inside incinerators [24,25]. More specifically, when pandemic dieses endanger human beings, the knowledge of incineration is of importance to deal with reducing the landfilling of the untreated medical wastes [26,27].…”

The Flotation Process Can Go Green

“…Flotation has direct application to (or we can say that it originates from) mineral processing, which is called "froth flotation". The latter field presents for sure special peculiarities compared to flotation techniques applied to wastewater treatment [1][2][3][4][5]. Haynes started the systematic application of flotation for sulfides in mineral beneficiation in order to efficiently separate them (with the use of oil) from gangue.…”