Helena Joyce
In Factorio, pollution is represented as a red cloud that spreads outwards from buildings involved in processing items. It is a concern for players as it triggers biter attacks, with higher pollution values decreasing the time between attacks. While it is impossible to eliminate pollution entirely without mods, there are several strategies to reduce it. One effective method is to use efficiency modules, which significantly reduce pollution by lowering electricity costs. Another strategy is to switch to solar power, which produces no pollution except that required to fabricate panels and accumulators. Additionally, placing polluting buildings near forests can help, as trees absorb pollution, although they degrade over time and cannot regrow.
| Characteristics | Values |
|---|---|
| Trees absorb pollution | Every single tree absorbs a small amount of pollution in its chunk per second |
| Pollution and trees | If the total pollution in a chunk is above 60 units, once per second some of the trees in that chunk each have a chance to either lose one stage of leaves or have their leaves become one stage more gray. Regardless of whether the tree loses leaves or gets grayer, 10 pollution are absorbed by the tree |
| Pollution and bitters | Pollution adds to the evolution factor of bitters, increasing the risk of attacks on the factory |
| Pollution and buildings | Pollution is produced by many buildings involved in processing items and spreads outwards at a steady rate |
| Biggest sources of pollution | Steam burner boilers, resource extraction (miners, oil rigs) and raw material processing (chemical plants, smelters and centrifuges) |
| Reducing pollution | Use efficiency modules, solar panels, nuclear reactors, hand mining and hand crafting |
| Productivity modules | Productivity modules increase energy and pollution production but they also produce free product at no extra resource or pollution cost |
| Science labs | Science labs do not pollute, but the productivity bonus means you get free science |
| Bio-Industries mod | Allows for a lot of ways to produce your products "green" and includes things like air purification, tree nurseries, better solar power generators (and boilers) |
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What You'll Learn
Trees absorb pollution, but dead trees absorb less
In the game Factorio, trees play an important role in reducing pollution. Every tree absorbs a small amount of pollution per second, with the amount depending on the leaf density of the tree. As trees absorb pollution, they may lose leaves or their leaves may become grayer, indicating damage. Once the total damage to a tree reaches 120%, it stops absorbing pollution. Dead trees, however, absorb less pollution than living trees, with a rate of 0.0001 per tick compared to a range of 0 to 0.001 per tick for living trees. This reduced absorption rate can lead to higher pollution levels, causing more trees to die.
To decrease pollution in Factorio, players can employ several strategies. One approach is to focus on the major sources of pollution, such as steam burner boilers, resource extraction, and raw material processing. By improving the efficiency of these processes, pollution can be significantly reduced. For example, using electric drills instead of burner drills can decrease pollution by 2.4 times per ore. Additionally, players can utilise efficiency modules, which reduce pollution by lowering the power consumption of buildings. Another strategy is to transition to nuclear power, as it can help shrink the pollution cloud around factories.
While dead trees in Factorio absorb less pollution, it is important to note that in real-world ecosystems, dead trees, or snags, play a vital role. They contribute to nutrient cycling, releasing nutrients like nitrogen, potassium, and phosphorus into the soil as they decay. This process enhances soil quality and supports the growth of new vegetation. Additionally, dead trees serve as carbon stores and provide food, shelter, and nesting sites for various wildlife species, including birds, mammals, insects, and fungi.
To summarise, in the context of Factorio, trees effectively absorb pollution, but their absorption rate decreases as they deteriorate, leading to potential increases in pollution levels. To counter this, players can implement strategies to reduce pollution, such as improving process efficiency, using efficiency modules, and transitioning to nuclear power. Meanwhile, in natural ecosystems, dead trees are essential for nutrient cycling, carbon storage, and providing habitats for wildlife, showcasing their ecological significance.
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Solar panels can replace coal as an energy source
Solar panels can effectively replace coal as an energy source. Coal-fired power stations have long been a major source of electricity, supplying about 80% of Australia's power needs. However, there is a growing trend to phase out coal power due to its detrimental environmental impact and finite nature.
Solar power, on the other hand, offers a clean and renewable alternative. Solar panels generate electricity from sunlight without emitting greenhouse gases or other pollutants, and they do not deplete natural resources. While solar panels have lower energy conversion efficiency compared to coal, advancements in solar technology have improved their efficiency and cost-effectiveness over time.
In Factorio, players can also adopt strategies to reduce pollution and emulate a shift towards cleaner energy sources. One approach is to utilize efficiency modules, which can significantly reduce pollution by lowering the power consumption of buildings. Additionally, players can transition to electric drills, which pollute less than burner drills, and focus on reducing pollution from major sources such as steam burner boilers, resource extraction, and raw material processing.
Furthermore, players can consider using productivity modules strategically. While these modules increase pollution, they can produce free products, offsetting the pollution costs associated with producing additional inputs. Another strategy is to take advantage of tree mechanics, as trees absorb pollution. However, dead trees absorb less pollution, leading to higher pollution levels and a cycle of increased tree death.
By implementing these strategies, players can effectively reduce pollution in Factorio, reflecting a similar transition towards cleaner energy sources like solar power in the real world.
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Efficiency modules reduce pollution
Efficiency modules are an effective way to reduce pollution in Factorio. While the game's wiki does not explicitly mention pollution reduction as a feature of efficiency modules, players have observed that they do indeed reduce pollution. This is because pollution in Factorio is directly tied to power consumption; as efficiency modules reduce power consumption, they also reduce pollution.
A player on the Factorio forums noted that efficiency modules can reduce pollution from two sources: the facility producing energy and the consumption of energy. If a facility consumes less power, it will pollute less. This is especially beneficial for players using steam as their power source, as one source of pollution is the steam engines themselves.
Another player observed that efficiency modules can reduce pollution from machines that are not fully solar-powered. By reducing the power consumption of these machines, efficiency modules can lower pollution from both the machine and the steam engines powering it.
Efficiency modules can also be used in conjunction with solar panels to great effect. Solar panels produce no pollution except that which is required to fabricate the panels and accumulators. By using efficiency modules to reduce the pollution from the fabrication process, players can create a very small pollution cloud.
Additionally, efficiency modules can be strategically placed in certain machines to maximise pollution reduction. For example, using three level 1 efficiency modules in miners can reduce energy consumption by 80%, resulting in a significant decrease in pollution production.
While efficiency modules are very helpful for reducing pollution, it is important to note that they do not eliminate it completely. Players seeking to further reduce pollution may need to consider using mods or changing their map generation settings.
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Productivity modules increase energy and pollution production
Productivity modules can be placed inside item-producing buildings and labs to improve productivity. Each time the machine finishes crafting, an amount is added to the bar equal to the percentages of the productivity modules inside the machine. When the bar reaches 100%, an extra set of products is immediately generated without consuming any resources.
Productivity modules increase energy consumption per cycle and slow down the machine, leading to higher pollution levels. However, they also produce a free product at no extra resource or pollution cost, as the extra pollution produced by the module is offset by the pollution saved by not having to produce an additional set of inputs elsewhere.
For example, in an assembly machine with four productivity module 3s, there is a 40% chance for an extra product at the cost of 40% pollution, 320% more power used, and a 60% reduction in production speed. However, by using beacons to counteract the speed penalty, the relative additional pollution per product can be significantly reduced. With eight beacons, each with two speed modules, the machine's speed can be increased by 400%, resulting in a net gain of 340% speed and 212% more pollution per production cycle while still producing 40% additional free product.
Another strategy to reduce pollution is to use efficiency modules, which reduce the required electricity to run a machine and, consequently, decrease pollution generation. These modules can be especially effective in electric mining drills and oil rigs, which are major sources of pollution. Additionally, switching to solar power or nuclear power can help lower pollution levels.
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Advanced technologies and water purification systems can reduce pollution
Advanced technologies and water purification systems are key to reducing pollution and ensuring access to clean water. Water purification systems typically rely on physical, biological, or chemical filtration methods. Physical filtration uses semi-permeable membranes to filter out sediments and other contaminants. Biological filtration employs biofilm or biologically activated carbon (BAC) to break down organic compounds. Chemical filtration, while effective, can result in high concentrations of disinfection byproducts.
Nanotechnology is a form of physical filtration that uses tiny membrane pores to filter out pollutants that pass through other treatment processes. One of the most common nanotech water purification techniques is the carbon nanotube (CNT) filtration system. CNT-based systems remove organic, inorganic, and biological compounds from water, making it safe for drinking. NASA developed acoustic nanotube technology for wastewater treatment in the International Space Station, which uses acoustics to drive water through carbon nanotubes, leaving contaminants behind.
Another nanotechnology-based system is the use of sheets of graphene, a carbon-based material, to filter seawater. The sheets have minuscule holes that block particles of salt while allowing water molecules to pass through. Clay ceramic filters work similarly, allowing water molecules through while blocking biological contaminants, dirt, and other harmful substances.
In addition to nanotechnology, other advanced water purification systems are being developed. One such system is solar vaporization technology, which can derive potable water from seawater and polluted freshwater sources. Researchers at Princeton University have also developed a solar absorber gel that can be applied to contaminated water. When water passes through the gel, it purifies it by filtering out pathogens, metals, and other molecules.
Desalination is another popular water purification process, especially in the Middle East and the American Southwest, where water supplies are limited. While traditional desalination is energy-intensive, recent advancements have significantly reduced energy consumption by increasing the size of the membranes used.
Other innovative solutions include photocatalytic water purification, which uses photocatalysts and ultraviolet rays to remove toxic substances and contaminants at high speeds, and bioaugmentation, which introduces a mix of microorganisms to break down and remove contaminants. These advanced technologies and water purification systems offer efficient and cost-effective solutions to reduce pollution and provide access to clean water.
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