Technological Solutions to Reduce Environmental Pollution in Large Cities

The pollution prevailing in large cities is a problem worldwide. Pollution caused by factories and constant traffic affects not only the ecosystem, but also the quality of life of the inhabitants. To try to mitigate this situation a bit, the experts have been in charge of finding solutions that can help clean the air of the big cities, and this time the great ally in the task is technology again.

The inhabitants of the big cities are exposed all the time to high levels of pollution, since the air - due among other things to the smoke emanating from the big factories and to a constant traffic - contains toxic substances and very harmful to health. Faced with this problem, expert researchers in the field of pollution propose solutions through technology. Know in the following note what new gadgets can help you clean the air you breathe a little.

If you want to be part of those who add to reduce the level of pollution in your city there are several steps you can take; as for example take into account some of these technological solutions devised by experts in order to alleviate the problem of pollution.

Start & Stop Technology

Traffic is one of the most polluting factors of any city. The gases emitted by the fuel are highly harmful to the air and therefore to the health of the population. Star & Stop is a technology developed by the Bosch company that aims to reduce emissions of carbon dioxide (CO2) from the atmosphere and save fuel when the vehicle is paused, for example at a traffic light or traffic jam. In situations like this, the system goes into standby and shuts off the engine, but just by pressing the clutch again the engine is activated again. Currently in Europe one of every two cars that are manufactured include this technology, which saves 8% of fuel in urban environments.

Photocatalyst Pavement

Scientists at the University of Technology in Eindhoven are developing an active chemical capable of absorbing pollutants such as nitrogen oxides (NxOy) - which are a set of highly toxic chemical compounds - and transforming them into other less polluting ones, such as nitrate.

The substance developed by the researchers is composed of titanium oxide, active substance that is sprayed on the pavement and fixed on the surface, transforming the soil into a photocatalyst capable of reducing the contaminating impact of vehicles.

Photocatalyst pavements can be 50% more expensive, but they are a good investment for the health of the population, since tests carried out showed that it can reduce nitrogen oxide by up to 45%.

Hand Tree

In a literal sense, a solution at your fingertips. Hand Tree is an air purifying bracelet that works in a similar way to a plant! As it does? Take carbon dioxide and convert it to oxygen; that is, it takes the dirty air and returns it purified. This invention is one of the finalists of the design and technology contest Electrolux Desing Lab 2013, which had as its motto to be inspired by urban life. Its young creator, Alexandr Kostin, ensures that the bracelet is able to purify the air eliminating dust and smoke among other contaminating issues, and explains that if all the inhabitants of a large city used these wristbands, the effect of pollution would be significantly reduced managing to resemble the air of a forest.

eCo3 Hispacold

eCo3 is also an air purifier developed by the company Hispacold, in order to disinfect and purify the air of buses and coaches; with which the risk of contagion of diseases through respiration in this type of transport can be mitigated, since it reduces by 90% the activity of the microbes in the environment and totally eliminates the concentration of volatile organic compounds VOC which are the responsible for the bad smell. How good it would be to have one in each public transport unit!


Some Concepts and Principles of Technology that is Applied in the Environment.


  • Make known the positive and negative side of technology in the environment in which we live.

  • Show the environmental problems caused by technological activities.

  • To make known the technologies at the service of the environment.

Environmental impact of technology

Since prehistoric times people have obtained resources to hunt, protect, etc., from nature. Nature is capable of renewing many natural resources if consumed at an adequate pace, but other resources can not be renewed. For example, oil and coal take millions of years to form. However, since the time of the Industrial Revolution, people have consumed most of the world's reserves of these fossil fuels.

For a long time industrial and technological needs have been satisfied without paying attention to possible damage to the environment. Now it seems that at least these damages are known; we just need to put the means at our disposal to avoid them.

Environmental problems caused by technological activities

Human activities, from the obtaining of a raw material, to the disposal of the waste generated after obtaining a technological product, can have disastrous consequences for the conservation of the environment. Some examples are desertification, the environmental impact of technological works, the pollution produced in the obtaining and treatment of many raw materials or energy sources and the waste generated in many industrial activities.

Direct environmental impact: The execution of public works (roads, swamps, etc.) and mining operations modify the ecosystem in which many animal and plant species live. These works can separate the populations of both sides of the road, railroad, etc.

Desertification: Every year increases the desert planet's surface. This results in a general impoverishment of the soil, which harms the agricultural and livestock activities of the affected region.

Contamination: It is perhaps the most noticeable effect. The increase in energy consumption has considerably increased the proportions of certain gases (carbon dioxide, sulfur oxides, etc.) in the atmosphere, especially near industrialized areas. Some consequences of air pollution are the global warming of the planet due to the greenhouse effect or the decrease in the thickness of the ozone layer.

Residuous generation. Certain technological activities generate waste very contaminants that are difficult to remove, such as some plastic materials or nuclear waste.

Oil tanker accidents: have disastrous consequences for the marine environment in which they take place. The oil slicks produced can considerably damage the populations of fish, seabirds, etc., of the affected region.

Technology at the service of the environment

Science and technology can serve to help preserve the environment. Some examples are the prediction of forest fires, the recycling of certain materials or the use of alternative energy sources.

The prediction and extinction of forest fires is carried out by artificial satellites. Modern detection methods allow the presence of fires to be noticed shortly after they occur.

  • The recycling of certain products, such as glass, paper, etc., can prevent overexploitation of some raw materials (wood, etc.).

  • Renewable energy sources, such as solar, wind or geothermal, do not deplete themselves and, in general, pollute less than non-renewable sources, such as coal or oil.

In other words, technology in general, which includes technologies of information technology, communications, and industry in general, have spared no effort to develop quickly, but in most cases, at the expense of environmental degradation in which we are included as human beings.

With this, nature is getting sick with death and we with it. But if we start to become aware of what is happening or what we are not doing to protect it, at present we have a wide variety of technological tools that can facilitate ecological efforts.

In the end I can only say that if we put at the service of nature all the existing technology, eg satellites, we can perform a monitoring of our beloved mother earth, and work to protect it.

Technology in many aspects helps to improve the environment, we use less paper, we do not need to move as much as we did for what we save on fuel etc ... as you are, it helps us improve many other aspects.

As is logical, technology is not always good, we consume more electric power with all the devices.

Society now begins to be aware of the current problems of the environment so it is beginning to reward companies that try to avoid this contamination.

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