Department of Chemical Engineering, University of Alicante, P.O. Box 99, E-03080 Alicante, Spain.
Department of Chemical Engineering, University of Alicante, P.O. Box 99, E-03080 Alicante, Spain.
Sci Total Environ. 2018 May 1;622-623:1258-1264. doi: 10.1016/j.scitotenv.2017.12.068. Epub 2017 Dec 13.
Combustion and pyrolysis runs at 850°C were carried out in a laboratory scale horizontal reactor with different materials combining biomass and waste electrical and electronic equipment (WEEE). Analyses are presented of the carbon oxides, light hydrocarbons, polycyclic aromatic hydrocarbons (PAHs), polychlorinated benzenes (ClBzs), polychlorinated phenols (ClPhs), polybrominated phenols (BrPhs), polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs). Results showed that gas emissions were mainly composed of CO and CO; the high level of CO found in the pyrolytic runs was easily transformed into CO by reaction with oxygen. The total amount of light hydrocarbons emitted was higher in the samples containing WEEE, methane being the most abundant light hydrocarbon in all the runs. However, the presence of WEEE reduced the emission of PAHs which decreased with the increase of the oxygen. The total amount of BrPhs increased in the decomposition of the samples containing WEEE, reaching its maximum in pyrolysis runs. Emission of PCDD/Fs was enhanced in pyrolytic conditions and easily decreased in the presence of oxygen.
在一个带有不同材料的实验室规模卧式反应器中进行了 850°C 的燃烧和热解实验，这些材料结合了生物质和废弃电子电气设备（WEEE）。分析了二氧化碳、轻烃、多环芳烃（PAHs）、多氯苯（ClBzs）、多氯苯酚（ClPhs）、多溴苯酚（BrPhs）、多氯二苯并对二恶英和二苯并呋喃（PCDD/Fs）。结果表明，气体排放物主要由 CO 和 CO 组成；热解实验中发现的高水平 CO 很容易通过与氧气反应转化为 CO。含 WEEE 的样品中排放的轻烃总量较高，所有运行中甲烷都是最丰富的轻烃。然而，WEEE 的存在减少了 PAHs 的排放，随着氧气的增加而减少。含 WEEE 的样品分解时 BrPhs 的总量增加，在热解运行中达到最大值。在热解条件下 PCDD/Fs 的排放增加，在氧气存在下容易减少。
