“…As a consequence, this technology can be considered as the lowest cost technology for water desalination (Carter, 2015) in comparison to others existing technologies, such as thermal desalination (multistage flash desalination, MSF; multi-effect distillation, MED) (Moonkhum et al, 2010). RO is a prominent separation process in process industries (such as textile, paper, food, electrochemical, biochemical industries) and in wastewater treatment in addition to water desalination due to its power to separate impurities effectively and in a way appropriate to the environmental demands (Elhalwagi, 1992;Bódalo-Santoyo et al, 2003;Nguyen et al, 2009;Slater et al, 1983). As a result, a number of researchers in the past decades developed several mathematical models of RO desalination process in order to explain the separation technique and to carry out model based optimisation to enhance the efficiency of the production process Mujtaba, 2012, 2013a,b;Barello et al, 2015;Manenti et al, 2015).…”