title: Emission of polycyclic aromatic hydrocarbons (PAHs) from the liquid injection incineration of petrochemical industrial wastewater.
abstract: This study investigated the emission of polycyclic aromatic hydrocarbons (PAHs) from stack flue gas and air pollution control device (APCD) effluent of the liquid injection incinerator (LII) disposing the petrochemical industrial wastewater, and PAH removal efficiencies of wet electrostatic precipitator (WESP) and wet scrubber (WSB). The PAH carcinogenic potency were investigated with the benzo(a)pyrene equivalent concentration (BaP(eq)). The remarkably high total-BaP(eq) concentration (220 microgNm(-3)) in the stack flue gas was much higher than those of several published emission sources, and indicated the possible influence on its surrounding environment. The total-PAH emission factors of the WESP, WSB and stack flue gas were 78.9, 95.7 and 30,900 microgL(-1) wastewater, respectively. The removal efficiencies of total-PAHs were 0.254, 0.309 and 0.563% for WESP, WSB and overall, respectively, suggesting that the use of both WESP and WSB shows insignificant PAH removal efficiencies, and 99.4% of total-PAHs was directly emitted to the ambient air through the stack flue gas. This finding suggested that the better incineration efficiencies, and APCD removal efficiencies for disposing the petrochemical industrial wastewater are necessary in future.
authors: Department of Chemical and Materials Engineering, Cheng Shiu University, 840, Chengching Rd., Kaohsiung 833, Taiwan, ROC.
authors: Lin-Chi
authors: LC
authors: Wang
authors: I-Ching
authors: IC
authors: Wang
authors: Juu-En
authors: JE
authors: Chang
authors: Soon-Onn
authors: SO
authors: Lai
authors: Guo-Ping
authors: GP
authors: Chang-Chien
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D019652:Extraction and Processing Industry; D005740:Gases; D017745:Incineration; D007220:Industrial Waste; D010578:Petroleum; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D014865:Waste Disposal, Fluid
chemical_list: D000393:Air Pollutants; D005740:Gases; D007220:Industrial Waste; D010578:Petroleum; D011084:Polycyclic Aromatic Hydrocarbons