Two-in-One Fuel Synthetic Bioethanol-Lignin from Lignocellulose with Sewage Sludge and Its Air Pollutants Reduction Effects

Ju-Hyoung Park, Min-Ho Jin, Young-Joo Lee, Gyu-Seob Song, Jong Won Choi, Dong-Wook Lee, Young-Chan Choi, Se-Joon Park, Kwang Ho Song and Joeng-Geun Kim
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Ju-Hyoung Park: Clean Fuel Laboratory, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Korea
Min-Ho Jin: Department of Chemical & Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea
Young-Joo Lee: Clean Fuel Laboratory, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Korea
Gyu-Seob Song: Clean Fuel Laboratory, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Korea
Jong Won Choi: Energy Saving Laboratory, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Korea
Dong-Wook Lee: Advanced Materials and Devices Laboratory, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Korea
Young-Chan Choi: Clean Fuel Laboratory, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Korea
Se-Joon Park: Clean Fuel Laboratory, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Korea
Kwang Ho Song: Department of Chemical & Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea
Joeng-Geun Kim: Energy Saving Laboratory, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Korea

Energies, 2019, vol. 12, issue 16, 1-15

Abstract: Developing effective, economical, and environmentally sound approaches for sewage sludge management remains an important global issue. In this paper, we propose a bioethanol-lignin (nonfood biomass)-based sewage sludge upgrading process for enhancing the heating value and reducing air pollutants of hybrid sewage sludge fuel (HSF) for the effective management of sewage sludge. Sewage sludge paste with the lignin-CaO solution implies drying at 105 °C accompanied by torrefaction at 250 °C. During torrefaction, moisture and partly volatile matter begin to evaporate, and are almost vaporized out to the surface. In this study, the proposed process enhances the net caloric value (NCV) to 37%. The lignin-embedded HSF shows a two-in-one combustion peak regardless of the mixing ratio, resulting in a 70% reduction of unburned carbon (UBC) emissions, which is one of the particular matter (PM) sources of combustion flue gas. Other air pollutants, such as CO, hydrocarbon, NO x , and SO x , were also reduced by the proposed process. In particular, SO x emission remained at ~1 ppm (average value) regardless of the sulfur content of the fuel.

Keywords: sewage sludge; biomass; lignocellulose; lignin; upgrading fuel (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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