Chemical industrial kilns used for co-processing of hazardous waste: Low environmental risks of polycyclic aromatic hydrocarbons (PAHs)

2020 ◽  
Vol 8 (5) ◽  
pp. 104312
Author(s):  
Xuebing Li ◽  
Li Li ◽  
Yuying Du ◽  
Meijia Liu ◽  
Qifei Huang ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Hazardous Waste ◽  
Aromatic Hydrocarbons ◽  
Environmental Risks ◽  
Polycyclic Aromatic

Surface water polycyclic aromatic hydrocarbons (PAH) in urban areas of Nanjing, China

2017 ◽  
Vol 76 (8) ◽  
pp. 2150-2157 ◽  
Author(s):  
Chunhui Wang ◽  
Shenglu Zhou ◽  
Shaohua Wu ◽  
Jing Song ◽  
Yaxing Shi ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Surface Water ◽  
Aromatic Hydrocarbons ◽  
Urban Areas ◽  
Coke Oven ◽  
Environmental Risks ◽  
Equivalency Factors ◽  
Polycyclic Aromatic ◽  
Toxic Equivalency Factors ◽  
Oil Source

The concentration, sources and environmental risks of polycyclic aromatic hydrocarbons (PAHs) in surface water in urban areas of Nanjing were investigated. The range of ∑16PAHs concentration is between 4,076 and 29,455 ng/L, with a mean of 17,212 ng/L. The composition of PAHs indicated that 2- and 3-ring PAHs have the highest proportion in all PAHs, while the 5- and 6-ring PAHs were the least in proportion. By diagnostic ratio analysis, combustion and petroleum were a mixture input that contributed to the water PAH in urban areas of Nanjing. Positive matrix factorization quantitatively identified four factors, including coke oven, coal combustion, oil source, and vehicle emission, as the main sources. Toxic equivalency factors of BaP (BaPeq) evaluate the environmental risks of PAHs and indicate the PAH concentration in surface water in urban areas of Nanjing had been polluted and might cause potential environmental risks. Therefore, the PAH contamination in surface water in urban areas of Nanjing should draw considerable attention.

Analysis of Particular Pollutants in Waste Transformer Oil

2015 ◽  
Vol 768 ◽  
pp. 204-211
Author(s):  
Song Tao Liu ◽  
Jia Liu ◽  
Li Na Zhu ◽  
Hong Wei Cao ◽  
Chuan Min Chen
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Hazardous Waste ◽  
Aromatic Hydrocarbons ◽  
Electric Power Industry ◽  
Operating Conditions ◽  
Transformer Oil ◽  
United Nations Environment Programme ◽  
Gas Chromatography Mass Spectrometry ◽  
Toxic Substances ◽  
Polycyclic Aromatic

Waste pollutions and disposal problems of transformer substation in electric power industry were paid more and more attention by people. Waste transformer oil contained many kinds of toxic substances. Transformer oil belongs to hazardous waste according to the definition of the United Nations Environment Programme (UNEP) and the National Hazardous Waste Inventory in China. The related research on environmental pollutants in waste transformer oil was less. The composition and content of particular pollutants which is harmful to human health and ecological environment in waste transformer oil was studied in this paper. Gas chromatography-mass spectrometry was chosen to detect the organic pollution composition and content of particular pollutants in transformer oil, based on investigation and analysis. Transformer oil samples running different time under 10KV voltage level were detected. The test results showed that with turbidity of oil rising, the content of polycyclic aromatic hydrocarbons in waste transformer oil increased, while benzene content changed in the opposite trend. Complex composition, different origin and different operating conditions were the reasons of difficulty to separate organic components in transformer oil during detection. This study is helpful for safe disposal of waste transformer oil. And it also can provide some theoretical support to eliminate the harm of the polycyclic aromatic hydrocarbons and benzene series.

scholarly journals Complex Contamination Research and Hazard Assessment of the Waste of the Wooden Railway Sleeper

2018 ◽  
Vol 13 (4) ◽  
pp. 385-403 ◽  
Author(s):  
Rokas Vilniškis ◽  
Rasa Vaiškūnaitė
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Phenolic Compounds ◽  
Hazardous Waste ◽  
Aromatic Hydrocarbons ◽  
Petroleum Products ◽  
Laboratory Research ◽  
The European Union ◽  
Polycyclic Aromatic ◽  
Hazard Level ◽  
Railway Sleeper

Before being put to use, wooden railway sleepers are impregnated with creosote to increase their longevity and protect them from any adverse environmental impact. Creosote consists of a number of chemical substances, and some of those substances, namely, the polycyclic aromatic hydrocarbons, phenolic compounds and heterocyclic aromatic compounds, are potent carcinogens. Apart from polycyclic aromatic hydrocarbons and phenolic compounds, during their use, sleepers are mostly contaminated with heavy metals and petroleum products. Upon railway reconstruction, wooden railway sleepers become the waste, which must be handled by the current legislation of the European Union. After determining the concentration of contaminants with laboratory research, it is possible to identify their hazard level and classify them as hazardous or non-hazardous waste. After conducting laboratory research on the waste of wooden railway sleeper analysed, they are classified as hazardous waste.

The Assessment of Contamination and Source of Polycyclic Aromatic Hydrocarbons from the Sediments of the Someş River

2019 ◽  
Vol 64 (1) ◽  
pp. 55-67
Author(s):  
Vlad Pӑnescu ◽  
◽  
Mihaela Cӑtӑlina Herghelegiu ◽  
Sorin Pop ◽  
Mircea Anton ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Polycyclic Aromatic
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