Polycyclic aromatic hydrocarbon (PAH) emission from co-firing municipal solid waste (MSW) and coal in a fluidized bed incinerator

Emission, distribution and toxicity of polycyclic aromatic hydrocarbons (PAHs) during municipal solid waste (MSW) and coal co-combustion

“…Compared to coal and MSW combustion alone, MSW/coal co-combustion produced the least amount of total PAHs. It exhibited a different trend from the study in which the total PAH yields decreased in the order MSW N MSW/coal N coal (You, 2008). Regarding the distribution of 16 PAHs, Nap, Acy and Ace peaked at 700°C; Ant peaked at 800°C and others peaked at 900°C from MSW/coal co-combustion, which was moderately similar to that from coal combustion alone (shown in Fig.…”

“…The high proportions of HMW and MMW PAHs from MSW combustion was possibly related to the hydrogen abstraction acetylene addition (HACA) reaction. It was reported the HACA played a minor role for PAH formations during coal combustion while it was the main PAHs information mechanism during plastics combustion, especially for HMW PAHs (You, 2008). Considering the high proportion of plastics in MSW, HACA was responsible for the high yields of MMW and HMW PAHs from MSW combustion.…”

The Emission Characteristics of PAHs during Coal and Sewage Sludge Co-Combustion in a Drop Tube Furnace

“…Then, the concentrated solution was purified through a purifying tube packed with activated silica gel. The purified solution was condensed to 1 mL using a K-D concentrator and pure nitrogen (Tsai et al, 2002;You, 2008;Zhou et al, 2009). Finally, the extracted samples were put into brown vials and stored at 4°C for high-performance liquid chromatography (HPLC) analysis (Zhou et al, 2009).…”

“…However, the heat value (LHV) of MSW in China is only around 4200 kJ/kg (Yan et al, 2006), which barely meets the lowest requirement of incineration. In recent years, some scholars proposed coal/MSW co-combustion to solve the above problem (You et al, 2008;Zhu et al, 2008). However, the cocombustion method can not solve all of problems related to MSW treatment, some pollutants such as heavy metals, dioxins and Polycyclic Aromatic Hydrocarbons (PAHs) are formed during MSW incineration process (Tekasakul et al, 2008;Chomanee et al, 2009;Ye et al, 2012).…”

Effect of MSW Source-Classified Collection on Polycyclic Aromatic Hydrocarbons in Residues from Full-Scale Incineration in China

“…Significant research has been conducted on PAHs emission from incineration of different combustibles such as plastic wastes, for example PVC (polyvinyl chloride), HDPE (high-density polyethylene) and PP (polypropylene) (Wheatley et al 1993;Li et al 2001), medical wastes (Lee et al 2002), wood (Khalfi et al 2000) and waste with coal (You 2008). The influence of combustion parameters such as incineration temperature, residence time and gas composition on PAHs generation from different types of incinerators has been studied (Chiang et al 1992;Wey et al 2001;Khalfi et al 2000;Li et al 2001).…”