“…Recent work in this area increasingly have involved the development of optimization models, primarily solved using mathematical programming (Faria and Bagajewicz, 2010a;2009;Tan et al, 2009;Karuppiah and Grossmann, 2008;Tan et al, 2007b;San Roman et al, 2007;Gunaratnam et al, 2005) as well as other approaches such as fuzzy programming (Tan and Cruz, 2004;Aviso et al, 2010a;Aviso et al, 2010b), Monte Carlo simulation (Tan et al, 2007a) and artificial intelligence-based metaheuristic algorithms (Jeżowski et al, 2007;Hul et al, 2007). The optimization-based approach mainly requires the construction of a superstructure network representation of design alternatives that leads to a mixed-integer linear/nonlinear program (MILP/MINLP).…”