A waste management model for optimal recycling-landfilling policies under macroeconomic conditions

Chang Chih Chen, So De Shyu, Yen Chun Wu, Chih Yuan Yang

Research output: Contribution to journalArticle

1 Citation (Scopus)


This research provides a waste management model in the presence of macroeconomic conditions. An optimal control problem which integrates the recycling-landfilling decision with industry supply-demand dynamics is designed to achieve the value-maximizing objective. The model simultaneously considers idiosyncratic technical and aggregate demand shocks, while the stoppage time for landfill use is assumed to follow a Cox process with the intensity function of a firm's total waste collection. The closed-form solution of the optimal recycling ratio is also derived. The results suggest that when macroeconomic effects are neglected, optimal recycling ratios tend to be underestimated.

Original languageEnglish
Pages (from-to)852-858
Number of pages7
JournalEconomic Modelling
Issue number3
Publication statusPublished - 2011 May 1
Externally publishedYes



  • C53
  • C61
  • Macroeconomic conditions
  • Optimal recycling ratio
  • Q53
  • Waste management policies

ASJC Scopus subject areas

  • Economics and Econometrics

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