UPSC Mains 2025 · GS III · Q7 · 10 marks · 150 words

What is Carbon Capture, Utilization and Storage (CCUS) ? What is the potential role of CCUS in tackling climate change ?

हिन्दी में

कार्बन अवशोषण (कैप्चर), उपयोग तथा भंडारण (सी सी यू एस) से क्या आशय है ? जलवायु परिवर्तन से निपटने में सी सी यू एस की संभावित भूमिका क्या है ?

How a topper answered the closest question

Toppers wrote this one in a test series: “Climate change mitigation and adaptation strategy is not only about reducing future emissions but also involves active removal of already released carbon into the atmosphere. In this context what do you understand by the concept of Carbon Capture, Utilisation and Storage (CCUS) and discuss the progress of the international community in this regard.”

Ritika ChitlangiaAIR 55 · CSE 2024 · 168 wordsTheir whole copy

Opening · a definition

Carbon capture, utilisation and storage refers to the process of capturing the emissions of CO2, effectively re-utilising it and storing it, through geo-engineering & technological solutions.

Concept of CCUS

Body · points

→ Mainly relies on sequestration of carbon i.e. 'Blue carbon'. → Aims to reduce the impact of climate change through preventing the release of GHG into atmosphere.

Various methods of CCUS (1) Afforestation → increasing absorption of carbon (2) Ocean urea fertilisation - increase the capacity of oceans to sequester carbon.

(3) Aquifers / Filters → to capture carbon and release it in a safe environment. (4) Blue Hydrogen production → capturing of GHG in electrolysis process.

Progress of carbon CUS (1) Iceland → 'Carbfix' → to capture carbon released from industries. (2) Near Norway, carbon is stored under the water. (3) In India, Gujarat refinery → sequestered carbon underground. (4) USA → coal bed methane to reduce and sequester carbon.

Close · a summary

Therefore, CCUS is an alternative to reducing emissions of carbon and thereby limiting the impact of climate change.

How toppers approach this question, and more on its topic: open the question.

Source: UPSC, Civil Services (Main) Examination 2025, General Studies Paper III, Q7. The paper on upsc.gov.in. Themes and links to toppers’ answers are by UPSC Grade, not by UPSC.