International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 05 Issue: 04 | Apr-2018 www.irjet.net p-ISSN: 2395-0072 © 2018, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 870 Capturing carbon dioxide from air by using Sodium hydroxide (CO2 Trapper) Harshdeep Singh 1 , Prashant Gupta 2 , Akshay Soni 3 , Rohit Joshi 4 , Ram Jatan Yadav 5 , Ashutosh Singh 6 1,2,3,4 Jims Engineering Management Technical Campus (JEMTEC-affiliated to GGSIPU) Department of Mechanical Engineering, Knowledge park 3, Greater Noida, Uttar Pradesh 5,6 Assistant Professor Department of Mechanical Engineering,JIMS Engineering Management Technical Campus, Greater Noida., India.201308 ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - Carbon dioxide (CO2) emissions have become one of the most serious issues and this environmental concern is being faced by our civilization today. These emissions are mainly generated from the combustion of coal, oil and natural gas which are the main energy resources in our daily life, economic growth and industrial development. It is widely considered a primary factor in global climate change. In addition, it adversely affects our earth. Switching from fossil fuel would take time and in mean time, emissions will grow to a factor that will take centuries for plants to absorb it. Therefore, we need a solution for this. A possible solution is to capture carbon directly from air same as plants do and store it. This paper presents a way to capture carbon from air by using NaOH. This paper also presents design, materials and cost analysis of prototype created for carbon capturing facility. Reactions and chemicals involved to do so along with experimental data of effectiveness of carbon capturing. Key Words: Air purifier, Carbon Scrubber, Carbon Capture, Direct Air Capture (DAC), Carbon Dioxide Trapper. 1. INTRODUCTION It is well known that CO2 plays a dominating role in the greenhouse gases. Global climate change leads to the high interest in the technologies relevant to the CO2 capturing that is one of the potential methods to reduce greenhouse gas emissions. Carbon dioxide (CO2) emissions have become one of the most serious issues and environmental concerns facing our civilization today. At present even if we stop using fossil fuels or producing excess co2, we still cannot revert to the present normal state of the earth so we need to remove the excess co2 more rapidly than flora, as trees would require a long time to absorb the present excess carbon from the atmosphere. Trees also require large amount of cultivating land of the earth which could be used for productive purpose. Keeping in mind all the challenges faced by humanity this project would help overcome the important problem of global warming. The amount of carbon dioxide (CO2) in the atmosphere continues to rise and rather rapidly due to unparalleled cumulative CO2 emissions, provoking the undesirable greenhouse gas effect. Certainly, it is becoming critical to develop economical and practical pathways to reduce the CO2 emissions; and appropriately, prospective routes to address this enduring challenge are considered. (i) CO2 emission reduction from post-combustion stationary and mobile sources where CO2 concentration is in the range of 10–15% and (ii) CO2 removal from air called direct air cap0ture (DAC), which is another alternative option to reduce greenhouse gases emissions in a uniform way globally. Although DAC is relatively more challenging than post-combustion capture, it is recognized that it might be practical, provided that suitable adsorbent combining optimum uptake, kinetics, and energetics and CO2 selectivity is available at trace CO2 concentration. Figure 1: Carbon dioxide ppm level over the time 1.1 Literature Review Several methods has been developed and used to capture carbon dioxide from high emission sources and store it in different conditions, some of the featured work that has been done is: Carbon capture and storage (CCS) involves the separation and capture of CO2 from flue gas, or syngas in the case of IGCC. CCS is a three-step process that includes: 1. LiOH absorption solution developed by NASA use same principle but different compound.