The diagram illustrates the manufacture of ethanol fuel from corn. The process of making this fuel requires 9 steps in total. It begins with harvesting corn and ends with delivering products to the gas station.
The first stage involves collecting corn from fields and then delivered to warehouses to store. After that, corn is milled in the grinder and mix with water to be cooked for 4 hours. The mixture after cooking is fermented in 48 hours.
At the next stage of the process, the combination is separated into liquid and solid by-products, a liquid obtained and then be purified in 5 hours to eliminate bacteria before stored in fuel tanks. Finally, ethanol fuel production ends when the product is loaded into containers and moved to the gas station.
- The graph below shows the percentage of Australian exports to 4 countries from 1990 to 2012
- It is predicted that robots are going to become increasingly important in our lives How could robots be used in the future Will this development be a positive or a negative development 78
- The diagram below shows one way of manufacturing ceramic pots
- The charts below give information on the ages of the populations of Yemen and Italy in 2000 and projections for 2050 Summarise the information by selecting and reporting the main features and make comparisons where relevant 78
- In recent years there has been a considerable rise in crimes committed by young people in cities What has caused this What solutions can you suggest 73