Process Diagram

Band 6+: Biofuel production: how ethanol is made. Write at least 150 words.

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Image for topic: Biofuel production: how ethanol is made. Write at least 150 words.

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The image illustrates ethanol production from biofuel starting with energy (sunlight + carbon dioxide) aiding plant/tree growth; this is followed by harvesting, and pre-processing which releases carbon dioxide; processing involves breaking down cellulose into sugars; microbes are added to convert sugars into ethanol; ethanol is used as a fuel, releasing carbon dioxide again in the process.

Given the complexity of the image, the above description may not be entirely accurate.

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The diagram below depicts the process-making of biofuel called ethanol from raw plant materials.

Overall, biofuel production is a whole recycle process. It involves several stages, starting with absorbing energy using resources from plants and trees and ending with final fuel that can be distributed to customers.

First, sunlight and carbon dioxide was being absorbed by plants and trees for its growth purposes. Then, the plants and trees are harvested and transported to a processing factory. They are crushed until it becomes a tiny part called cellulose. Cellulose was being processed until it became sugar. Therefore, microbes were being added to sugars so it can be generated as a final fuel called ethanol.

Ethanol is an essential component for fuel engines. Hence, this biofuel is being distributed all over the gas station, where it can be used for vehicles to mobilize. Carbon dioxide created by a heated engine, later on would be absorbed all over again by plants and trees.

In conclusion, this whole recycling process is inevitable, and very beneficial for people’s lives.

Word Count: 174

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Overall Band Score

(+/- 0.5)

Vocabulary Complexity:
C1 - Intricate
Strive to incorporate even richer and more precise language.

Grammar Mistakes: N/A

Vocabulary Repetition:

plants: 4

being: 4

biofuel: 3

called: 3

trees: 3

Try using synonyms for the above words

Task Response

The report adequately covers the process of ethanol production, providing a general overview of the stages involved. However, there's room for improvement in terms of detail and precision. For instance, elaborating on the pre-processing stage and the specific role of microbes could enhance the description. Additionally, while the cyclical nature of the process is mentioned, emphasizing the inputs and outputs at each stage would provide a clearer understanding. The language is generally clear, but varying sentence structure and using more precise vocabulary could elevate the writing. To improve, focus on providing more specific details about each stage of the process and using more varied and precise language.

Coherence & Cohesion

The report generally presents a clear overview of the ethanol production process. However, the organization could be improved for better flow. Consider using more precise transition words to link the stages of the process more effectively. For example, instead of simply stating 'Then,' use phrases like 'Following this step' or 'Subsequently' to enhance the logical progression. The conclusion is somewhat generic; try to make it more specific to the process described, perhaps highlighting the efficiency or sustainability aspects of the cycle.

Lexical Resource

The vocabulary used is adequate for describing the process, but there's room for improvement by incorporating more specific and technical terms related to biofuel production. For instance, instead of 'tiny part called cellulose,' you could use 'cellulose fibers' or 'cellulose material.' Also, vary your word choice to avoid repetition; for example, find synonyms for 'absorbed' and 'processed' to demonstrate a wider range of vocabulary.

Grammatical Range & Accuracy

The report contains several grammatical errors that affect clarity. Pay close attention to verb tense consistency (e.g., 'was being absorbed' should be 'are absorbed' or 'were absorbed' depending on the context). Also, ensure correct subject-verb agreement and article usage. For example, 'a heated engine' could be improved to 'an engine' or 'the heated engine' depending on the intended meaning. Proofreading carefully for these errors will significantly improve the grammatical accuracy of your writing.

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