| Author | Nghiem Trung Dung |
| Call Number | AIT Thesis no. EV-96-24 |
| Subject(s) | Polycyblic aromatic hydrocarbons
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering. |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. EV-96-24 |
| Abstract | For the purpose of P AHs analysis, twelve composite samples of particulates in the flue gas emitted from the thermal power plant of the Bai Bang Paper Company, Vietnam were taken isokinetically on glass fibre filters using an existing stack sampler with some modifications. Three existing sampling ports with total 12 traverse points were used for this study. Each composite sample was collected for a period of eight hours with 40 minutes per each traverse point. Collected samples were wrapped in aluminium foil and stored at -4 °C to avoid photooxidation as well as thermal decomposition of P AHs. The samples were Soxhlet extracted in methylene chloride for 18 hours with at least three cycles of the solvent through the filters per hour and followed by clean-up on silica gel column using a mixture of methylene chloride/n-hexane ( 4/6, V N) for elution. The extracts were solvent exchanged to acetonitrile and analyzed for phenanthrene, fluoranthene, pyrene, chrysene and benzo[a]pyrene by high performance liquid chromatography with fluorescence detection using a wavelength program and gas chromatography with mass spectrometer detection. The analytical results indicate that these compounds were present on the particulates of the flue gas emitted from the plant with concentrations 10.4, 6.5, 4.3, 2.4, 0.06 ng/Nm3 and emission factors 95.l, 58.5, 38.3, 21.1, 0.62 ng/kg of coal respectively. The results are lower as compared to other studies conducted for coal-fired boilers in United Kingdom and China. The concentrations as well as the emission factors of the compounds decrease with increasing number of benzene rings resulting from the domination of low molecular mass P AHs in the flue gas. A decrease of recovery efficiencies of the studied P AHs with the increase in their number of benzene rings due to strong adsorption on the particulates was observed. |
| Year | 1996 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. EV-96-24 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering (EV) |
| Chairperson(s) | Reutergardh, Lars Baetz |
| Examination Committee(s) | Nguyen Thi Kim Oanh;Shrestha, Ram Manohar |
| Scholarship Donor(s) | Swedish International Development Cooperation Agency (Sida) |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1996 |