@article{scholars3172, year = {2012}, pages = {1427--1431}, journal = {Computer Aided Chemical Engineering}, publisher = {Elsevier B.V.}, doi = {10.1016/B978-0-444-59506-5.50116-4}, volume = {31}, note = {cited By 2}, title = {Modeling and optimization of water-based polygeneration system}, abstract = {The impact of climate change, particularly drought, places an enormous pressure on the synthesis of process systems that use freshwater resources efficiently. This paper presents the synthesis of water-based polygeneration system to minimize freshwater consumption. A comprehensive model is formulated through a superstructure, featuring the possible configurations of simultaneous heat and power generations, re-circulating cooling water system, wastewater treatment options, as well as reaction and separation technologies for chemical production. Process units are modeled using Aspen Hysys 2006. A case study on the synthesis of optimum water polygeneration system is developed for an ethylene glycol production. The superstructure model is a mixed integer non-linear programming problem (MINLP) consisting of 305 equations, 326 variables and 20 binary variables. The objective of the model is to minimize freshwater make-up subject to 85 constraints. The model is subsequently solved using DICOPT++ in GAMS 20.7 with the optimum solution showing nearly 50 savings of freshwater consumption. {\^A}{\copyright} 2012 Elsevier B.V.}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84864520213&doi=10.1016\%2fB978-0-444-59506-5.50116-4&partnerID=40&md5=7ac2552c16717b86244abae3f007e98b}, issn = {15707946}, author = {Prihatin, T. and Mahadzir, S. and Abdul Mutalib, M. I.} }