The world suffers from many challenges nowadays. Recycling, pollution, energy, arid areas are examples of these problems. Pollution has its bad effects on the environment like global warming, spreading out of diseases, and destroying agriculture. Also, the world suffers from a crisis in energy. Nonrenewable sources for energy are about to run out, so the world is trying to find alternative and renewable sources for energy and to take advantage of wasted energy. as anyone knows, the main cause of air pollution is the smoke that comes form factors. This smoke stores a huge amount of thermal energy, but unfortunately, it’s wasted energy. many projects have been involved in solving these problems. many types of air filters have been invented like 

• Fiberglass filter. 

• Polyester and pleated filters. ...

 • High-efficiency particulate arrestance (HEPA) filters. ...

 • Washable air filters

 They all clean the air from solid particles and harmful gases; however, there are two sides of the coin. These filters are very expensive and that might cause a problem in developing and poor countries. Also, they don’t clean the air a hundred percent and their efficiency depends on their type. They need high maintenance and frequent changes, too. Some of them release excess ions and gases like Ozon which is very harmful to the environment. Our project has been designed in order to help in solving pollution and energy problems by using a modern material called MOF( metal-organic framework). This material is made by nanotechnology. Basically, it’s an organic material bonded to a metal in a certain way and shape. This material has a super ability in storing harmful gases and energy without any side effects. MOF has been chosen due to its relatively cheap cost and its high efficiency Which we chose as design requirements for our project. This material is going to be involved in a device like an air filter in a certain way in order to collect the highest amount of harmful gases and at the same time store the wasted thermal energy to help in solving energy crises.

The world has become impure and the causes of death, such as the epidemics and diseases, have increased, but problems are no longer dependent on diseases. With the development of life the problems have developed and more causes of death appeared in the world, such as pollution, especially air pollution, where air pollution resulted in 4.9 million victims in 2017. Air pollution reduces the age of the human, for example, the person in Europe loses two years of his life because of air pollution, so we focused on the main cause of air pollution which is factory smoke. Our project is to find a solution to purify the smoke of factories in addition to storing energy and thus we're going to use the wasted energy. Everybody knows the importance of energy today. It is the base of progress for countries, especially industrial ones [1-2]

First, we will put the filter under the ground in order to reduce the space in any factory from the presence of many machines and devices in the factory Second, the use of isolated metal tubes to transport smoke and fumes laden with toxic gases, dust, and solid materials. The tubes will be supplied with an air suction to increase the speed of moving smoke to the filter. Third, we will use a fine-pore fabric to put the MOF inside in order to collect and store gas molecules and the thermal energy. This cloth removes dust particles with some reverse cleaning of the smoke. Fourth, after the passage of smoke through MOFs. harmful gases particles and the heat of smoke will be preserved in the MOFs material. Fifth, the MOF substance will be put after the process in isolated bags to preserve them and take them to release the energy from them then we can use it again and repeat the process. The remained air will enter a cooling room to reduce its temperature to be the same as the atmospheric air temperature. Here comes the role of the general filter device to measure the smoke temperature that we purified to make its temperature like the air temperature. This energy is clean and we can provide modern devices with this energy, for example, physical accelerators or applications for particle physics. Thus, we cleaned the factory fumes and created clean energy which we can use for many uses.

Notes: When designing the device, we considered the ratio of dust, temperature, the moisture of gases, and. The device can be placed in many factories such as cement factories. The device is safe and has no danger to people or other nearby machines. If there are some gases that have not been stored or preserved with the use of MOF, we will put them in special tanks and they will be purified and measure the temperature of the normal air and the temperature of the smoke before it goes out to the air through the general candidate. The general filter measures the air temperature after purification to match the air temperature when the air that we purified exits outside the factory. The size of the filter varies by the volume of exhausts, gases, and smoke in each plant

MOF’s properties have dazzled us, so we have decided to take advantage of them in order to solve these two problems. These properties are absorption of harmful gases or fluids like hydrogen and carbon dioxide, storing energy, packing density, pore-volume, and big surface area. All these properties make it a good choice to filter the smoke that comes from factories. We chose material due to its efficiency in isolation and keeping thermal energy in order to store the highest amount of thermal energy [3-4]. We have decided to build the rooms under the ground in order to be able to take advantage of each part of the land and to reduce the area that the project takes. This material is characterized by the big surface area so that a small amount of MOF material will be enough [5]. Also, its cost is relatively cheap. The general cost is 507$ for 15 gm from the MOFs and this price changes depends on the type of the MOFs.

Air is an important part of several basic cycles that make life possible on Earth. pollution is one of the most dangerous problems in the world. With MOF material, we will be able to solve this problem in a better way because it has many important characteristics. MOFs will absorb harmful gases and at the same time, it will store thermal energy and take advantage of it in the future. In the end, the environment will be protected from air pollution and life will be better.

1] https://www.eea.europa.eu/themes/air/air-pollution-sources-1

 [2] https://www.nanowerk.com/mof-metal-organic-framework.php

 [3] https://novomof.com/?utm

 [4] https://science.sciencemag.org/content/341/6149/1230444

 [5] https://pubs.rsc.org/en/content/articlehtml/2007/jm/b706432b

 [6] https://www.nasa.gov/mission_pages/station/research/long_duration_sorbent_testbed

 [7]  http://www.esa.int/ESA_Multimedia/Images/2015/08/Biologial_air_filter_for_International_Space_Station