Composition and source identification of deposits forming in landfill gas (LFG) engines and effect of activated carbon treatment on deposit composition
| Autor: | Berrin Tansel, Orhan Sevimoglu |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Environmental Engineering
business.product_category Siloxanes Turkey chemistry.chemical_element Zinc Management Monitoring Policy and Law Combustion Octamethylcyclotetrasiloxane Chromium Waste Management medicine Waste Management and Disposal Motor oil Metallurgy General Medicine Sulfur Waste Disposal Facilities Nickel chemistry Biofuels Charcoal Calcium business Activated carbon medicine.drug Nuclear chemistry |
| Zdroj: | Journal of Environmental Management. 128:300-305 |
| ISSN: | 0301-4797 |
| DOI: | 10.1016/j.jenvman.2013.05.029 |
| Popis: | Compositions of deposits forming on engines parts operated with landfill gas (LFG) were analyzed. The deposit compositions were compared before and after the installation of activated carbon system for treatment of LFG. Deposits forming on the spark plugs had significantly higher levels of calcium, chromium, and nickel in comparison to those forming on the engine heads. The LFG contained about 9.5 ± 0.4 mg/m(3) total siloxanes, majority of which were octamethylcyclotetrasiloxane (D4) (5.0 ± 0.2 mg/m(3)), decamethylcyclopentasiloxane (D5) (2.9 ± 0.1 mg/m(3)) and hexamethyldisiloxane (L2) (1.6 ± 0.1 mg/m(3)). The samples collected from the engine heads before the activated carbon treatment of LFG had significantly high levels of silicon (149,400 ± 89,900 mg/kg) as well as calcium (70,840 ± 17,750 mg/kg), sulfur (42,500 ± 11,500 mg/kg), and zinc (22,300 ± 7200 mg/kg). After the activated carbon treatment, silicon levels decreased significantly; however, deposits had higher sulfur content (104,560 ± 68,100 mg/kg) indicating that the activated carbon released some sulfur during treatment. The analyses indicate that zinc and calcium originated from the additives in the lube oil while lead, aluminum, copper, nickel, iron, chromium were due to the engine wear. |
| Databáze: | OpenAIRE |
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