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Task 1 Band 8

Cambridge IELTS 19 Academic Writing Test 3 Task 1

You should spend about 20 minutes on this task. Write at least 150 words.
The diagram below shows how a biofuel called ethanol is produced.

Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The diagram illustrates the process involved in producing ethanol, a type of biofuel. Overall, the production can be categorised into three key stages: harvesting, pre-processing and processing, forming a cyclical system.

In the initial stage, plants and trees absorb sunlight and carbon dioxide to generate the energy required for growth. Once fully grown, they are harvested and enter the pre-processing phase. During this stage, the plant material is fed into a cutting machine, where it is reduced to smaller fragments and converted into cellulose.

The final stage involves processing the cellulose into usable fuel. First, it undergoes chemical treatment to break it down into sugars. Microbes are then added to ferment these sugars, producing ethanol. The finished biofuel is subsequently used to power vehicles such as cars, trucks and aircraft. Notably, the combustion of ethanol releases carbon dioxide, which is reabsorbed by plants, thereby completing a sustainable carbon cycle.

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Student Comments From Evaluate Writings

  • saksham shrestha 2 days ago

    Band Score 5The figure shows how ethanol produce Overall, firstly we should have to harvest plant and tree and grind in pressure . Now we should have to make cellulose. By cellulose we can make chemical. Then we should have to separate waste chemical and sugar. At last we can make ethanol . Now we can use it in our daily life. Firstly , we should have to dig our land to crop tree and plants . plants are grow by sunlight and carbon dioxide. Few years later we can harvest tree and plants . In 3 step we should have to cut the tree in a piece and grind in manufacture . In 4 step we would capable to make cellulose. Then we should have to pre processing cellulose and make chemical . In 5 step we should have to separate chemical and sugar. At he end we should have to add microbes then we would capable to make ethanol.

  • Pride GAPARE 1 week ago

    Band Score 5.5The diagram represents the production of a biofuel called ethanol. Overall, it is evident that there are various steps that are undertaken to produce ethanol approximately seven steps. Initially, energy is formed when sunlight and carbon dioxide combine then it acts as a source of nutrient for plants and trees to grow. When plants and trees grow, there are harvested using a tractor. Then, the tractor transport plants for pre - processing. After that, cellulose is produced which is further processed into liquid form. Furthermore, chains of sugars are formed. Finally, microbes are added to chains of sugars to break it down and produce ethanol. Ethanol is then used by different modes of transport namely: aeroplanes, trucks, cars as a form of fuel. When the different modes of transport are moving, they emit carbon dioxide in the air that quickly goes back to the atmosphere to combine with sunlight and later on form energy.

  • Radhikasehgal789 1 week ago

    Band Score 6.5The diagram illustrates the production process of ethanol, specifically introducing the various stages involved in the process cycle. Overall, the ethanol manufacturing process includes several interconnected stages, which initiate from the growth of plants and trees by consuming some energy sources and culminate in the distribution of biofuel as ethanol. Initially, the sunlight and carbon dioxide facilitate the growth of plants and trees, which serve as the primary stage of producing ethanol. Following their harvest, these plants undergo a pre-processing phase that extracts cellulose. This cellulose subsequently undergoes further processing, which yields sugars, which are essential for the fermentation stage. During the fermentation stage, the sugars are converted into ethanol by the action of some microbes. The resultant microbes can be used further for transportation vehicles such as airplanes, trucks, and cars, which emit carbon dioxide. Then, the cycle continues as the released carbon dioxide is eventually utilized in the initial phase of plant growth.

  • Towkir ahmmed Rana 1 week ago

    Band Score 5.5The process diagram illustrates how a biofuel named ethanol is produce. Overall the process consists of about eight stages beginning with energy and end up with delivery and its a never ending process. the process is start with energy providing plants sunlight and carbon dioxide, then plants and trees grow. After that using tractor harvest them and put them into pre processing machine after that cellulose them then it goes for process making liquid. After that it convert into sugars by processing it look like roots of trees then in the next process they add in it microbes and finally it convert into Ethanol and they can use it for propulsion for car ,tracks, airplane then it again melt into wind and again use for plants and trees grow.During this entire process plants undergo different kinds of process and finally convert into Ethanol.

  • Kalajo5178 2 weeks ago

    Band Score 5.5The given diagram illustrates the process of producing biofuel called ethanol using energy captured by the plants and processing that to produce ethanol which are used to run vehicles. There are 7 distinct steps involved in production of ethanol, starting from harvesting plants and tress to processing them turning them into a final product that can be used in day to day life. At fist the grown plants and trees which capture the energy from sunlight and carbon dioxide are harvested using industrial machines and they are turned into small chunks using pre processing machine. After pre processing cellulose is extracted and chemically processed in a factory to extract the sugars. That sugar is the main substance that is required for ethanol production. In that produced sugar microbes are added to produce ethanol. Ethanol is then used to power cars, trucks and planes . When ethanol is burned by the engine it generates carbon dioxide, which is released in atmosphere.

  • Jubayer Hossain 2 weeks ago

    Band Score 6.5The diagram depicts the production process of ethanol, a biofuel derived from organic matter. Overall, it presents a sequence of stages—from the intake of solar energy to the emission of carbon dioxide—and emphasizes the closed-loop nature of the system. The cycle starts with trees and plants, which absorb sunlight and carbon dioxide to grow. Once fully grown, the biomass is harvested and undergoes pre-processing to isolate cellulose. In the subsequent chemical phase, sugars are introduced to the cellulose, followed by microbes that enable the conversion of the mixture into ethanol. This ethanol is then used mainly as fuel for vehicles and various technologies. A major by-product of ethanol combustion is carbon dioxide, which is released into the atmosphere. Importantly, this CO₂ is later taken up again by new plant growth, thereby closing the loop. As such, the process illustrates a sustainable and renewable approach to fuel generation.

  • Муханжан Еркежан; VIP RYL-6 3 weeks ago

    Band Score 5.5The diagram illustrates the process of how ethanol is produced. Overall, it can be clearly seen that it starts with growing of plants and trees, which help to produce carbon dioxide. Then they harvested and pre-processed which makes a cellulose, where it will be processed by some chemicals to make sugar. After to create an ethanol microbes are added, which is used as fuel for cars, trucks and aeroplanes. The significant product of ethanol is carbon dioxide which is then released back to an atmosphere that helps plants to absorb energy, which is mixture of sunlight and carbon dioxide and grow.

  • Rounak Kukreja 3 weeks ago

    Band Score 6Ethanol is a widely used biofuel consumed by all types of commute, from cars to aeroplanes. the cycle of producing ethanol starts from plants and trees, where they create their energy using sunlight and carbon dioxide through photosynthesis and grow. Later, they're harvested and then pre-processed using heavy duty machines to form a chemical called cellulose, which is then processed in factories to produce forms of sugar. microbes are then added to these sugars to create ethanol, which is then used as fuel for cars, trucks, aeroplanes, etc. these vehicles, in turn, produce carbon emissions that then help the plants grow.

  • Maria Rhiza Precioso 3 weeks ago

    Band Score 5.5The diagram illustrates the process of ethanol.Overall, the production consists of stages, beginning with planting tress and ending with the release of carbon dioxide. The process involves both mechanical and chemical treatment before the final stage of the process. Initially, plants are planted and needs sunlight to grow.Once it has matured the tress are now ready to harvest.After harvesting, it is now subjected to pre-processing stage to extract cellulose. Next, the chemical process takes place where sugars and microbes are added to prepare for the final stage of the production process. In the following stage,Ethanol is produced and is ready to fuel cars, trucks, and even planes.A significant by-product of ethanol is carbon dioxide which is then released back into the atmosphere and then reabsorbed by the growing plants, completing the cycle of the process.Furthermore, the process demonstrates a renewable method of fuel production.

  • Güldem Şimşek 1 month ago

    Band Score 5.5The diagram gives information about the process of ethanol anh how is it made. Overall, the process have some stages started by the energy which coming from sunlight and carbon dioxide and the final stage is the ethanol is maded. Fist of all, the plants and trees have grewth by the energy which countein sunlight and corbon dioxide. After that, the growth plants are ready to harvest. After trees and plants are harvested the harvested plants undergo a machine process to be able to become cellulose. Secondly, the smaller pices of plants undergo a process which is become a sugars. In addition, some microbes are added to produce the ethanol. The transportations are used by people whic are plains, cars and tracks give the atmoshfer a carbon dioxide emissions in this way the hall process started again. Which is the final step of the diagram.

  • Nikita Kovalenko 1 month ago

    Band Score 6The diagram presented shows the key stages of the ethanol production. Overall, the process of the ethanol production is complex and repeating and involves environment, people and the usage of various equipments. Sunlight and carbon dioxide both serve as sources of energy for plants and trees. After trees and plants reach a certain stage of growth, people harvest them using the special equipmet. Afterwards, the stage of pre-processing begins, that contribute to cellulose, which is then processed. Having completed the processing, sugars appear, and microbes are to be added to them, so that ethanol can appear. Ethanol is widely used in the transportation system as a source of fuel. A number of different vehicles use it, and carbon dioxide is afterwards emitted to the environment. Then, the process of the ethanol production begins again.

  • Farahzod Rahimqulov 2 months ago

    The diagram below shows how a biofuel called ethanol is produced. Summarise the information by selecting and reporting the main features, and make comparisons where relevant. The protcess shows biofuel production: how ethanol is made . Starting from energy to the last carbon dioxide. Starting with siquel we have plants and trees on our planet and trees needs to be grow for that needs energy plants gets energy from sunlight and carbon dioxide combine. This gives plants and trees grows. After planting plants adn trees we get harvest from them. That harvest will be pre process and cellulose. The main chemical steps will begone. The first thing we gotta add is sugars to our preready product. One more adition we hame to add is microbes right after this process we can get the ethanol itself. Ethanole in our society will be used for whecl palns and for other technics. One of the major part of it is the seaquancy after usage of ethanol fuel some courage comes out the name of it carbon dioxide. Like mentioned abow carbon dioxide needs to plants grow it is the part of process too. Thats how to get the biofuel production how ethanol is made.

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