Economic viability analysis of a construction and demolition waste recycling plant in Portugal - part II: economic sensitivity analysis

被引:60
|
作者
Coelho, Andre [1 ]
de Brito, Jorge [1 ]
机构
[1] Univ Tecn Lisboa, Inst Super Tecn, Dept Civil Engn Architecture & Georesourres, P-1049001 Lisbon, Portugal
关键词
CDW fixed recycling plant; Economic analysis; Sensitivity analysis; MODEL;
D O I
10.1016/j.jclepro.2012.05.006
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Part I of this paper contained a technological description and economic evaluation of a large-scale high-end COW recycling plant in the Lisbon Metropolitan area. It concludes that economic viability is likely under the operating conditions considered, but these may and will very probably change in the near future. The reasons for such assumption have to do with the inherent uncertainty related to CDW generation (which might vary, for instance, due to socio-economic conditions in the region), such as the variability of CDW input gate fees and tariffs associated with landfilling rejected materials, which are market dependent parameters. This made it necessary to perform an (simplified) economic viability sensitivity analysis, focused on the investment return period and global economic balance. If parameters such as the plant's capacity, the COW input gate fee and landfill fee are varied, the investment return period is affected in different ways, though its value is generally kept below 8 years, for parameter variations of +/- 30%. The analysis indicates economic performance for variations in single parameters, except for the plant's capacity, which was considered to vary simultaneously with all others. Extreme best and worst scenarios were also tested in an attempt to define the model's boundaries. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:329 / 337
页数:9
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