Influence of different types of coals and stoves on the emissions of parent and oxygenated PAHs from residential coal combustion in China

• Published in: Environmental pollution (1987) Vol. 212; pp. 1 - 8
• Main Authors: Wang, Yan, Xu, Yue, Chen, Yingjun, Tian, Chongguo, Feng, Yanli, Chen, Tian, Li, Jun, Zhang, Gan
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.05.2016
• Subjects: Air Pollutants - analysis; China; Coal - analysis; Coal stove; Emission factor; Household Articles; Oxy-PAHs; Oxygen - chemistry; PAHs; Polycyclic Aromatic Hydrocarbons - analysis; Residential coal; China, People's Rep; PAHs; Emission factor; Coal stove; Oxy-PAHs; Residential coal
• ISSN: 0269-7491; 1873-6424
• DOI: 10.1016/j.envpol.2016.01.041

To evaluate the influence of coal property and stove efficiency on the emissions of parent polycyclic aromatic hydrocarbons (pPAHs) and oxygenated PAHs (oPAHs) during the combustion, fifteen coal/stove combinations were tested in this study, including five coals of different geological maturities in briquette and chunk forms burned in two residential stoves. The emission factors (EFs) of pPAHs and oPAHs were in the range of 0.129–16.7 mg/kg and 0.059–0.882 mg/kg, respectively. The geological maturity of coal significantly affected the emissions of pPAHs and oPAHs with the lower maturity coals yielding the higher emissions. The chunk-to-briquette transformation of coal dramatically increased the emissions of pPAHs and oPAHs during the combustion of anthracite, whereas this transformation only elevated the emissions of high molecular weight PAHs for bituminous coals. The influence of stove type on the emissions of pPAHs and oPAHs was also geological-maturity-dependent. High efficiency stove significantly reduced the emissions of PAHs from those relatively high-maturity coals, but its influences on low-maturity coals were inconstant. •15 coal/stove combinations were tested to evaluate their effects on PAH emissions.•pPAH and oPAH emission factors were 0.129–16.7 and 0.059–0.882 mg/kg, respectively.•Geological maturity of coal can significantly affect emissions of pPAHs and oPAHs.•Chunk-to-briquette transformation of coal can increase the emissions of HMW PAHs. The chunk-to-briquette transformation of coal dramatically increased the emissions of high molecular weight PAHs during the combustion process.