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    Title: Microwave-pyrolysis treatment of biosludge from a chemical industrial wastewater treatment plant for exploring product characteristics and potential energy recovery
    Authors: Lin, Kuo-Hsiung;Lai, Nina;Zeng, Jun-Yan;Chiang, Hung-Lung
    Contributors: 輔英科技大學 環境工程與科學系
    Keywords: Microwave heating;Polyaromatic hydrocarbons (PAHs);Pyrolysis oil;Heat value
    Date: 2020-05-15
    Issue Date: 2020-09-10 10:54:49 (UTC+8)
    Abstract: Sludge obtained from the biological wastewater treatment facility of a chemical plant was pyrolyzed for reuse via microwave heating in the temperature range of 400–800 °C. Higher temperature reduces the yield of residues and enhances the gas production. The pyrolysis process produced 16–24 dry-wt.% of oil, which the heat value ranged from 7600 to 8300 kcal kg?1. Apart from As, Cd and Mo, merely a small amount of toxic elements can be released into pyrolysis oil. For the liquid oil, the total concentration of the 16 PAHs was 100–207 μg g?1 and the concentration of nitro-PAHs is much lower than that of PAHs. High temperature increases the energy consumption in microwave power and reduces the produced energy from pyrolysis residue and oil. Therefore, lower energy consumption and higher energy recovery efficiency could be achieved at lower pyrolysis temperature.
    Relation: Energy,Volume 199, 15 May 2020, 117446
    Appears in Collections:[Department of Environmental Engineering and Science] Journal Article

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