*2.2. Plant Location and Capacity*

In this study, Iran is selected as a place for the biorefinery, where fossil fuel resources and methanol are widely available. However, the area has water shortages and is dealing with severe environmental impacts. Therefore, castor, as a low water demanding plant that can be cultivated in wastewater, is used. Considering the total world production of castor [9,27], a plant with the capacity of handling 120,000 tons of castor plant per year (based on the dry weight) is used.
