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Renewable Energy Generation by Full-Scale Biomass Gasification System Using Agricultural and Forestal Residues

Pract. Period. Hazard. Toxic Radioact. Waste Manage. Volume 11, Issue 3, pp. 177-183 (July 2007)

Issue Date: July 2007
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Agnes S. F. Tong,1 Keith C. K. Lai,2 Kelvin T. W. Ng,3 Daniel C. W. Tsang,4 Tongzhou Liu,5 Jess Liu,6 Jing Hu,7 Weihua Zhang,8 and Irene M. C. Lo,9 M.ASCE
1Research Engineer, Institute for the Environment, The Hong Kong Univ. of Science and Technology, Clear Water Bay, Kowloon, Hong Kong. E-mail: agnes.tong@alumni.ust.hk
2Postdoctoral Fellow, Dept. of Civil Engineering, The Hong Kong Univ. of Science and Technology, Clear Water Bay, Kowloon, Hong Kong. E-mail: kepenny@ust.hk
3Research Assistant, Dept. of Civil Engineering, The Hong Kong Univ. of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.
4Research Assistant, Dept. of Civil Engineering, The Hong Kong Univ. of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.
5Research Assistant, Dept. of Civil Engineering, The Hong Kong Univ. of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.
6Research Engineer, Institute for the Environment, The Hong Kong Univ. of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.
7Postdoctorate Fellow, Dept. of Civil Engineering, The Hong Kong Univ. of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.
8Research Assistant, Dept. of Civil Engineering, The Hong Kong Univ. of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.
9Associate Professor, Dept. of Civil Engineering, The Hong Kong Univ. of Science and Technology, Clear Water Bay, Kowloon, Hong Kong (corresponding author). E-mail: cemclo@ust.hk
This study investigated the application of biomass gasification to generate renewable energy, using three different types of agricultural and forestal residues: rice husk, almond shell, and waste wood. The field work was carried out in a full-scale gasification plant in Jiangxi, China. The heat value of product gas and the environmental pollution impacts of different biomasses under different gasifying temperatures were studied. Under the carbon feed rate in the range of 200–400  kg  C/h and similar biomass moisture content, increasing carbon feed rate had positive effect on the concentration of carbon-containing fuel gas components CO and CH4, whereas the concentration of CnHm was not much affected. Another fuel gas component H2 was affected by the moisture content of the biomass as it was generated by hydrolysis. In addition, the mobility of trace elements in biomass during the gasification process was evaluated and correlated with the concentration of gas pollutants produced. Thus, the potential environmental impacts can be preliminarily assessed by the elemental analysis of feedstock and ash residues.

©2007 ASCE
History: Submitted 17 January 2007; accepted 25 January 2007
Digital Object Identifier http://dx.doi.org/10.1061/(ASCE)1090-025X(2007)11:3(177)

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ISSN:
1944-8376 (online)   1090-025X (print)
Publisher:
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