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An Analysis of the Use of Biosludge as an Energy Source and Its Environmental Benefits in Taiwan

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  • Wen-Tien Tsai

    (Graduate Institute of Bioresources, National Pingtung University of Science and Technology, Pingtung 912, Taiwan)

Abstract

The objective of this paper was to provide a preliminary analysis of energy utilization from biological wastewater treatment sludge (biosludge) in Taiwan, a densely populated country (estimate 640 persons/km 2 ) with a high dependence (over 99%) on imported energy. The discussion focused on the status of biosludge generation and its management in the years 2004–2010. Findings showed that the main types of combustible waste ( i.e. , biosludge) produced by the industrial and agricultural sectors of Taiwan included food processing sludge, wine brewery sludge and agricultural sludge which may be reused as auxiliary fuel in the utilities (e.g., generator, boiler and incinerator). Furthermore, two conceptual biosludge-to-energy systems have been addressed with regard to the thermochemical conversion processes. One is to adopt direct combustion for power generation in the combined heat and power system. Another system uses pyrolysis and gasification for producing biochar (solid fuel), bio-oil (liquid fuel) and syngas (gas fuel). Based on their thermochemical properties and reported generation quantities, the energy potential and the environmental benefits of mitigating CO 2 emissions were also analyzed in the study, showing around 1.1 × 10 3 TJ/year and 57 Gg CO 2 /year, respectively.

Suggested Citation

  • Wen-Tien Tsai, 2012. "An Analysis of the Use of Biosludge as an Energy Source and Its Environmental Benefits in Taiwan," Energies, MDPI, vol. 5(8), pages 1-10, August.
    • Handle: RePEc:gam:jeners:v:5:y:2012:i:8:p:3064-3073:d:19453
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    References listed on IDEAS

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    1. Tsai, W.T. & Chou, Y.H., 2006. "An overview of renewable energy utilization from municipal solid waste (MSW) incineration in Taiwan," Renewable and Sustainable Energy Reviews, Elsevier, vol. 10(5), pages 491-502, October.
    2. Yun-Hsun Huang & Jung-Hua Wu, 2009. "Energy Policy in Taiwan: Historical Developments, Current Status and Potential Improvements," Energies, MDPI, vol. 2(3), pages 1-23, August.
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