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1. Project Title:
Name of the Guide:
Acharya Institute of Technology
Department of Mechanical Engineering
Project Synopsis Presentation – 2021 -2022
Name of the Student USN
Group Number
Designation:
Direct Air Capture And Air Freshener
Dr . NAGARAJA K C
02-01-2024 | 1
SANJITH.B 1AY21ME417
DILIP G H 1AY21ME402
JEFNI SAMUEL 1AY21ME408
Acharya Institute of Technology, Acharya Dr. Sarvepalli Radhakrishnan Road, Soladevanahalli,Bengaluru 560107
• 5
Assistant Professor
Department of Mechanical Engineering,
Acharya Institute of Technology
2023-24
SUJITH FERNANDES 1AY21ME422

2. 10-05-2024 | 2
Acharya Institute of Technology, Acharya Dr. Sarvepalli Radhakrishnan Road, Soladevanahalli,Bengaluru 560107
AIR POLLUTION

3. ABSTRACT
1.CO2 Collection: DAC employs specialized materials to trap CO2 directly from
the air, isolating it from other gases.
2.Extraction Process: Once captured, CO2 undergoes processes to intensify its
volume for storage or utilization, creating a more potent stream.
3.Obstacles and Opportunities: High initial expenses and energy demands
pose challenges to widespread implementation. However, ongoing research
focuses on refining DAC technology for increased efficiency and reduced costs.
4.Advancing the Technology: Collaborative efforts across various sectors aim
to innovate and enhance DAC, making it more accessible and impactful in
combatting climate change.
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Acharya Institute of Technology, Acharya Dr. Sarvepalli Radhakrishnan Road, Soladevanahalli,Bengaluru 560107

4. BE THE SOLUTION FOR AIR POLLUTION
• AQI in Delhi ranges from 255 to 486 where as AQI in Bangalore is 164 in Bapuji Nagar. AQI
is an index measured in a scale range of 0 to 500 where 101-150 is unhealthy for sensitive
groups, 151-200 unhealthy, and 201-300 very unhealthy. It is important to have a quick and
immediate solution to control the air pollution.
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Acharya Institute of Technology, Acharya Dr. Sarvepalli Radhakrishnan Road, Soladevanahalli,Bengaluru 560107

5. Introduction
• This project has been divided into two stages where in 1st stage we are using
Hepa filter to filter out dust , dirt and bacteria's from air .
• Then the filtered air enters the 2nd stage where the Direct Air Capture (DAC)
is a technology used to remove carbon dioxide (CO2) directly from the ambient
air.
• It's a process designed to mitigate climate change and reduce the
concentration of greenhouse gases in the atmosphere.
• DAC systems are often considered a form of carbon capture and utilization
(CCU) technology.
10-05-2024 | 5
Acharya Institute of Technology, Acharya Dr. Sarvepalli Radhakrishnan Road, Soladevanahalli,Bengaluru 560107

6. Principle of working
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Acharya Institute of Technology, Acharya Dr. Sarvepalli Radhakrishnan Road, Soladevanahalli,Bengaluru 560107

7. MECHANISM
• Air Intake: DAC systems draw in large volumes of air from the atmosphere.
• CO2 Absorption: The captured air passes through a chemical sorbent or solvent
that selectively captures CO2molecules. This process is often facilitated by
chemical reactions that bind CO2 to the sorbent.
• Desorption and Capture of Pure CO2: After absorbing CO2, the sorbent
undergoes a desorption process, releasing the captured CO2.
• Regeneration: The sorbent can be regenerated and reused for multiple cycles of
CO2 capture.
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Acharya Institute of Technology, Acharya Dr. Sarvepalli Radhakrishnan Road, Soladevanahalli,Bengaluru 560107

8. Components of DAC
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Acharya Institute of Technology, Acharya Dr. Sarvepalli Radhakrishnan Road, Soladevanahalli,Bengaluru 560107
1. Acrylic Sheet
2. Solar Panel
3. Carbon Filter
4. Suction Fan
5. Antimicrobial Filter
6. HEPPA Filter
7. Zeolite
8. Air Quality Indicator
9. Carbon Storage Tank
10. Regulators
11. Sensors(MQ 7)

9. Description
HEPPA FILTER
• Nano Protect HEPA filter is made of high quality
material & carbon filter to trap odor & VOCs
• It can capture up to 99.97%* of particles even as small
as 0.3 microns - the size of most common airborne
allergens, harmful particles, bacteria and viruses.
SUCTION FAN
• The fan is used to suck air through the air purifier. The fan
consists of a small electric motor with metal fan blades
attached to the motor's power take-off.
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Acharya Institute of Technology, Acharya Dr. Sarvepalli Radhakrishnan Road, Soladevanahalli,Bengaluru 560107

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Acharya Institute of Technology, Acharya Dr. Sarvepalli Radhakrishnan Road, Soladevanahalli,Bengaluru 560107
MQ7 SENSOR
• The MQ-7 sensor is used primarily for detecting
carbon monoxide (CO) gas in the surrounding
environment.
• Stable, long life and low cost.
• Good sensitivity to Combustible gas in wide range.
SOLAR PANEL
• The setup is operated by solar energy. Solar cells convert
the energy of sunlight directly into electricity through the
use of the photovoltaic effect.

11. 10-05-2024 | 11
Acharya Institute of Technology, Acharya Dr. Sarvepalli Radhakrishnan Road, Soladevanahalli,Bengaluru 560107
ZEOLITE BEADS
• Zeolite beads have the capability to adsorb carbon
dioxide (CO2) molecules.
• Zeolites are porous materials with a unique
crystalline structure, which have a cavities that can
selectively capture and adsorb various molecules
based on their size, shape, and polarity.
STORAGE TANK
• Carbon storage tanks securely contain captured CO2,
preventing its release into the atmosphere.
• They're crucial for safe, long-term storage, often in
underground geological formations, reducing
environmental impact.

12. Applications
• Industrial Zones: Near industries emitting high levels of CO2 to capture it directly
from concentrated sources.
• Urban Centers: Integration into city infrastructure to reduce localized emissions
and enhance air quality in densely populated areas.
• Agricultural Zones: Placing DAC facilities near agricultural areas to provide
captured CO2 for enhancing plant growth and promoting sustainable farming
practices.
• Remote Locations: In areas without access to the electrical grid, DAC can offer a
reliable method for CO2 removal.
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Acharya Institute of Technology, Acharya Dr. Sarvepalli Radhakrishnan Road, Soladevanahalli,Bengaluru 560107

13. References / source
Sl no Title Objective
1 Word Resource Institute mission is to promote environmental sustainability, economic opportunity,
and human well-being. They aim to address urgent global challenges, such
as climate change, sustainable development, and natural resource
management.
2
http://climeworks.com/ High-quality carbon removal for your climate strategy via Climeworks' direct
air capture and storage (DAC+S) technology.
3 Chat gpt the primary objective of ChatGPT, developed by OpenAI, is to provide a
conversational agent that can understand and generate human-like text
based on the input it receives,
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Acharya Institute of Technology, Acharya Dr. Sarvepalli Radhakrishnan Road, Soladevanahalli,Bengaluru 560107

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Acharya Institute of Technology, Acharya Dr. Sarvepalli Radhakrishnan Road, Soladevanahalli,Bengaluru 560107