Sustainability analysis of pelletized bio-fuel derived from recycled wood product wastes in Hong Kong

Published Date
Journal of Cleaner Production
1 February 2016, Vol.113:400–410, doi:10.1016/j.jclepro.2015.11.069

• Author 

• Md. Uzzal Hossain
• Shao-Yuan Leu
• Chi Sun Poon ^,

• Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong

Received 24 May 2015. Revised 24 October 2015. Accepted 23 November 2015. Available online 14 December 2015. 

Highlights

• •
  The present study assessed the sustainability of energy recovery from wood wastes in Hong Kong.
• •
  Bio-fuel derived from wood wastes can serve as an alternate fuel according to the physical and chemical analysis.
• •
  Energy generation from bio-fuel reduced environmental impacts significantly.
• •
  The outcomes of this study will provide new reference to future development of energy industry.

Abstract

The possibility of recovering energy from biomass residues has attracted a lot of research interest due to the environmental problems associated with burning coal. Wood wastes generated from construction and demolition activities and other wood product wastes can be a good potential source of renewable energy. The present study was conducted by using Hong Kong as an example to assess the environmental sustainability of converting recycled wood wastes (from construction and demolition activities and other wood product wastes) to produce wood pellets for direct energy generation. The chemical and physical characteristics of different types of wood product wastes were tested. An attributional lifecycle assessment approach was used to assess and compare the environmental impacts and sustainability for heat generation from the pelletized bio-fuel and coal. The test results showed that the energy content, chemical compositions and the trace metal concentrations all met the relevant standards. The results also showed that significant impacts on health, ecosystem, climate change and resources damage can be potentially avoided by using wood pellets instead of coal for energy generation. The overall findings demonstrated that the proposed “energy recovery” approach for using wood pellets as a bio-fuel in Hong Kong is environmentally sustainable, which can provide an alternative route for managing wood product wastes with the added benefits of energy recovery, and may be more applicable in mega cities especially when city-based incineration is a concern.

Keywords

Wood wastes

Bio-fuel

Lifecycle assessment

Energy recovery

Sustainability

---

Fig. 1.

 Table 1

Table 1.

 Table 2

Table 2.

 Table 3

Table 3.

Fig. 2.

 Table 4

Table 4.

 Table 5

Table 5.

Fig. 3.

Fig. 4.

 Table 6

Table 6.

• ∗ 
  Corresponding author. Tel.: +852 27666024; fax: +852 23346389.

For further details log on website :
http://www.sciencedirect.com/science/article/pii/S0959652615017357