PAH emission from the incineration of waste oily sludge and PE plastic mixtures

Li, Chun-Teh; Lee, Wen‐Jhy; Mi, Hsiao-Hsuan; Su, Chun-Ching

doi:10.1016/0048-9697(95)04705-x

Cited by 96 publications

(44 citation statements)

References 9 publications

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“…16 PAHs are carcinogenic, making their identification and minimization imperative in the combustion process. The characteristics of PAHs from different sources (e.g., biomass burning, 17 agricultural debris combustion, 18 animal carcass incineration, 19 domestic combustion, 16,20 and plastic combustion [21][22][23] ) have been reported; however, to the best of the authors' knowledge, no studies have reported on the PAHs formed in the combustion of waste PLA. In addition, the combustion of waste PLA is not thoroughly understood.…”

Section: Introductionmentioning

confidence: 79%

Combustion Kinetics and Emission Characteristics of Polycyclic Aromatic Hydrocarbons from Polylactic Acid Combustion

Chien

Liang

Liu

et al. 2010

Journal of the Air & Waste Management Association

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This study investigates the combustion kinetics and emission factors of 16 U.S. Environmental Protection Agency priority polycyclic aromatic hydrocarbons (PAHs) in polylactic acid (PLA) combustion. Experimentally, two reactions are involved in the PLA combustion process that potentially result in the release of lactide, acetaldehyde, and n-hexaldehyde. The products may continuously be oxidized to form carbon dioxide (CO 2 ) and some PAHs produced because of incomplete combustion. The analytical results indicate that the emission factors for PAHs are in the range of not detectable to 98.04 g/g. The emission factors are much lower than those of poly(ethylene terephalate) (PET) and other combustion of plastics. Results from this work suggest that combustion is a good choice for waste PLA disposal.

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Section: Introductionmentioning

confidence: 79%

Combustion Kinetics and Emission Characteristics of Polycyclic Aromatic Hydrocarbons from Polylactic Acid Combustion

Chien

Liang

Liu

et al. 2010

Journal of the Air & Waste Management Association

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“…Furthermore, the auxiliary fuel must be added to the incinerator to keep the incineration temperature constant. 12 As mentioned above, no technology currently has reached a satisfactory solution from the environmental and highly effective point of view. Consequently, there is a need for environmentally benign technologies capable to effectively neutralize the oily sludge and reduce its adverse impacts on the environment.…”

Section: -11mentioning

confidence: 99%

An Effective Process for Removing Organic Compounds from Oily Sludge

Jing¹,

Luan²,

Chen³

et al. 2011

Journal of the Korean Chemical Society

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ABSTRACT. Wet air oxidation (WAO) of oily sludge was carried out using Fe 3+ as catalyst, placed in a 0.5 L batch autoclave in the temperature range of 250-330 o C. Experiments were conducted to investigate the effects of temperature, the initial COD, reaction time, concentration of catalyst and O2 excess (OE) on the oxidation of the oily sludge. The results showed that in the WAO 88.4% COD was achieved after 9 min reaction at temperature of 330 o C, OE of 0.8 and the initial COD of 20000 mg/L. Temperature was found to have a significant impact on the oxidation of oily sludge. Adding a catalyst significantly improved the COD removal. Homogenous catalyst, Fe 3+, showed effective removal for pollutants. COD removal was 99.7% in the catalytic wet air oxidation (CWAO) over Fe 3+ catalyst. The results proved that the CWAO was an effective pretreatment method for the oily sludge.

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“…More than 80% of the total concentration of PAHs in incineration flue gas are in the gaseous phase. 2 For the sake of public health, it is very important to remove PAHs. Although a wet scrubber can be used to remove acidic gas from flue gas effectively, it is of no use in removing PAHs because of their low solubility in water.…”

Section: Introductionmentioning

confidence: 99%

Removal of Vaporous Naphthalene Using Polyoxyethylenated Nonionic Surfactants

Huang

Lee

2003

Journal of the Air & Waste Management Association

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Previous research has demonstrated that an anionic surfactant can increase the solubility of the vapor phases of both naphthalene and sulfur dioxide in water. This study examines the feasibility of removing polycyclic aromatic hydrocarbons (PAHs) during gas absorption by adding the polyoxyethylenated nonionic surfactants tetraethylene glycol monodecyl ether (C 10 E 4 ), octaethylene glycol monodecyl ether (C 10 E 8 ), and octaethylene glycol monotetradecyl ether (C 14 E 8 ), to water. The apparent solubility and absorption rates of naphthalene in surfactant solution were slightly higher than in pure water at a concentration lower than the critical micelle concentration (CMC). However, the apparent equilibrium naphthalene solubility increased linearly in proportion to the concentrations of nonionic surfactants because of the solubilization effect of micelles at concentrations above the CMC. The solubilization effect exceeded that of the reduced mass transfer coefficient, increasing the rate of absorption of vaporous naphthalene. For the four surfactants, the capacity to solubilize naphthalene was in the order C 10 E 4 Ͼ C 14 E 8 Ͼ C 10 E 8 Ͼ sodium dodecyl sulfate (SDS) and was related to the hydrophile-lipophile balance values of the surfactants. The enrichment factors, which can express the degree of naphthalene solubility in solution, were 6.09 -14.2 at a surfactant concentration of 0.01 M for the three polyoxyethylenated nonionic surfactants. Empirical findings confirm that adding nonionic surfactants increases the absorption efficiency of hydrophobic organic compounds (HOCs) using spray or packed tower.

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PAH emission from the incineration of waste oily sludge and PE plastic mixtures

Cited by 96 publications

References 9 publications

Combustion Kinetics and Emission Characteristics of Polycyclic Aromatic Hydrocarbons from Polylactic Acid Combustion

Combustion Kinetics and Emission Characteristics of Polycyclic Aromatic Hydrocarbons from Polylactic Acid Combustion

An Effective Process for Removing Organic Compounds from Oily Sludge

Removal of Vaporous Naphthalene Using Polyoxyethylenated Nonionic Surfactants

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