UPSC Courses

DNA banner


  • 23 December, 2023

  • 2 Min Read

Algae-assisted Carbon capture

IIT Jodhpur’s innovative technology uses algae-assisted fuel cells to capture carbon dioxide, treat wastewater and generate power.

  • It is an indirect method for converting CO2 into carbonates and then use it for algal growth.

Aim – To generates power, algae biomass and treats water by utilising algae-assisted MFC for flue gas carbon capture.

Flue gas the gas produced from the flue or chimneys of thermal power stations and other industrial plants

Microbial fuel cells (MFC)

  • A bio-electrochemical device that generates electricity by harnessing the metabolic activity of microorganisms.
  • When microorganisms break down organic matter as in wastewater into simpler molecules, electrons are released in the process.
  • If these electrons are made to flow through an external circuit, you get electric current.

WorkingCO2 from the flue gas is absorbed by the wastewater supplemented with sodium bicarbonate and generates flue-gas-derived bicarbonates (FGDBs).

  • FGDB helps in growth of algae Chlorella vulgaris which is thermo-tolerant and can grow in wastewater.
  • Algae-assisted MFC is then used to generate electricity.

Significance – This indirect biochemical route of CO2 fixation is advantageous since more inorganic carbon can stay in the water.

    • 1 tonne of algae captures 180 tonnes of flue gas CO2.
    • For a cubic meter of wastewater and FGDB in MFC, they got energy of 0.0066 kWhr.

This is the 1st time that the integration of algae MFC with flue gas carbon capture has been attempted anywhere.

Limitations – A tonne per day of CO2 capture requires 2 sq km algae culture area (aerial) in vertically aligned pipes.


Pradhan Mantri Suryodaya Yojana

Recently, Prime Minister announced Pradhan Mantri Suryodaya Yojana under which 1 crore households will get rooftop solar power systems. India’s Status of Current Solar Capacity India currently stands at 4th place globally in solar power capacity. As per Ministry of New an

Foreign Contribution Regulation Act (FCRA)- NGO 

The Foreign Contribution Regulation Act, 2010 (FCRA) registration of two prominent non-governmental organisations (NGOs) — Centre for Policy Research (CPR) and World Vision India (WVI) have been cancelled this month. What is FCRA? Key provisions of FCRA, 2010 Key aspects Description

Voice clone-AI

Voice clone fraud has been on the rise in India. AI voice cloning – It is the process of creating a synthetic replica of a person’s voice through machine learning and speech synthesis technology.It is called as voice deepfakesor audio deepfakes. Objective – To achieve a high level of na

Science communication- how to promote

Steps taken by India to promote Science Communication Publications and Information Directorate (PID) - An organisation under Council of Science and Industrial Research (CSIR) established in 1951 for publishing and disseminating scientific information in India. National science magazines- The PI

Universal Basic Income (UBI)- Analysis

Universal Basic Income (UBI) can strengthen welfare architecture and unlock the nation’s latent demographic potential. UBI - It is an income support mechanism typically intended to reach all or a very large portion of the population regardless of their earnings or employment status. Objective- To provide enough to co


Search By Date

Newsletter Subscription
SMS Alerts

Important Links

UPSC GS Mains Crash Course - RAW Prelims Answer Key 2024