Questions tagged [pollution]

any addition of harmful substances or products in the environment (air, water, soil or food). For questions specifically about [air-polution], [greenhouse-gas-emissions] or [toxic-chemicals] please use those tags.

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2
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1answer
131 views

Does 1 container ship really pollute as much as 50,000,000 cars?

I remember seeing many news articles and posts on social media saying that a single container ship pollutes as much as 50 million cars. Is this true? How could that be possible? https://tech.slashdot....
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0answers
27 views

Could synthetic fibers be environmentally-friendly, can you deal with the issue of microfibers?

Synthetic fibers make up the largest share of total apparel production and are expected to become even more common. They also, it seems, contribute to microplastic pollution more than anything else. ...
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1answer
63 views

Why not outlaw low density plastics that cause ocean pollution?

I know it costs. But we got rid of chlorofluorocarbons and are preparing to eliminate stuff like coal! This in between. Proposal: By international agreement get rid of floatable PE, HDPE and PP and ...
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1answer
55 views

What hydrocarbons are produced by a diesel motor?

HC (I assum hydrocarbons) is a column in the euro emission standards for trucks & buses. Which hydrocarbons are produced and at what quantities? Would the particulate matter emissions be included ...
2
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1answer
37 views

Does a single Euro VI bus really release less NOx than a euro 6 diesel car?

A transport expert claimed that a Euro 6 car has fewer NOx emissions than a Euro VI bus, surely this cannot be correct?! https://en.wikipedia.org/wiki/European_emission_standards Euro 6b (diesel car) -...
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0answers
62 views

Should we use paper, plastic, or reusable bags. If reusable, which kind?

I found this site looking for one specifically geared to picking products based on sustainability. I'm not sure if such a specifically-focused site would actually be more effective than this one. The ...
5
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2answers
76 views

Does oil spilled in backyard contaminate groundwater?

A poster near a recycling station mentions that one liter of cooking oil contaminates 1 million liters of water and suggesting cooking oil recycling. If I spill cooking oil in the dirt of the backyard,...
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1answer
34 views

What is the difference in CO2 emissions between new and old double decker buses?

The Euro 6 bus WHTC test cycle here shows a value of 4.0 carbon dioxide and the Euro 5 ESC & ELR test cycles show a value of 1.5 CO. https://en.wikipedia.org/wiki/European_emission_standards It ...
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1answer
35 views

In what type of location is it likely to find larger or smaller amounts of ozone?

I've been looking at some air quality monitoring results for ozone and trying to understand why there is such difference between locations. Near busy roads, the sea, near factories? I am quite ...
3
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1answer
73 views

How effective is a Smoke Control Area at reducing particulates? (UK)

Smoke Control Areas are in place in 195 out of 434 local authorities. 53 of those cover the entire local authority. Smoke Control Areas make it illegal to burn coal and other smokey fuels and ...
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3answers
161 views

Do electric cars create more particulate pollution than petrol cars?

I have seen some reports saying that electric cars, because they are heavier and put more strain on the tyres, will create more particulate pollution than a petrol car. Is this true? and if so what ...
4
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1answer
117 views

My residential colony burns dry grass every year; how can I stop them?

Every year during June-October, it rains and a few months later after the rainy season there is a lot of grass growing in the empty sites in my residential colony. So all the grass is cut, piled up ...
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0answers
21 views

What are the most common sources of VOC pollution in outdoor air?

I have a personal pollution monitor that has been recording higher levels of VOCs the last 18 hours or so and I'm trying to understand and consider the reasons for this. I live in a fairly busy city (...
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47 views

Examples of a city or region with poor economy and environmental pollution that turned to green economy and prospered

I am looking for some examples of cities or regions that initially suffered from poor economy, unemployment, pollution or any environmental problems, but they turned to green technology and ...
5
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4answers
80 views

How to design a taxi rank to charge electric vehicles whilst waiting for fares?

This post deals with the design of a taxi rank and how to reduce the pollution created by idling and edging foroward. A few answers suggested that making the taxis switch to hybrids, or even better ...
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5answers
72 views

How to prevent pollution caused by a taxi rank? Is there a solution to the 'edging forward' cost of cars in a queue?

I am looking at ways in which a heavily polluting taxi rank near a train station could reduce its pollution footprint. My first thought was that the pollution was mostly down to idling and I am ...
4
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2answers
1k views

Preventing idling - ideas to keep warm in a car when the engine is off and it is cold outside

I have asked a few people whose cars are idling if they mind switching them off to reduce pollution. One response I get from quite a lot of people is that they need to keep the car running to enable ...
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0answers
69 views

Is Tawashi really suitable for dishwashing?

As a step to reduce my waste I planned to make a tawashi to replace artificial dishwashing sponges. I had a t-shirt not suitable to be donated, waiting to be upcycled, so I made t-shirt yarn out of it ...
3
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1answer
156 views

How to mark pavement and grass without harming environment

I'm looking for some kind of paint to make markings on the pavement and on a grassy area, so that the markings are well visible for a day or so. Spray paint would do the trick but is not very ...
3
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4answers
160 views

Is there a scientific consensus whether lifestyle or amount of human population the biggest problem

When discussing with a colleague about ecology yesterday, we had agreed on the following premise : Before industrial age, world population was low, and the environment was not significantly damaged ...
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2answers
882 views

Which consumes more carbon dioxide: a fully grown forest or a newly planted one that is growing?

I was talking to some friends and one of them claims that it is more efficient to combat global warming by cutting the trees and replanting them because a growing forest consumes more CO2. (Firstly, a ...
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1answer
103 views

Comparing train station pollution with smoking

A research done in my city's main train station showed 400,000 UFP particles per cubic centimetre. I am looking into printing pamphlets and wanted to inquire how does spending half an hour in a 400,...
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2answers
132 views

How do I get rid of numerous small pieces of charcoal?

There's a small piece of land used for burning tree branches on bonfire (because that's the easiest way to get rid of them). Most of the material gets burnt to ashes but some of it only turns into ...
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2answers
64 views

Dealing with waste in countries without waste management infrastructure

In previously sustainable countries, westernization brings unmanageable waste: We get flooded with plastic but don't even have garbage collection. Apparently the result is that 40% of the world's ...
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1answer
118 views

How can we all together clean up the vast plastic carpets in our oceans? [closed]

It is mind-boggling to me that there is still so much plastic out in our oceans, floating around for years and ever growing and nothing is being done about it. Governments should work together, ...
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0answers
496 views

Ammoniacal Nitrogen (NH3-N) test and sources of ammonia in natural bodies of water

One parameter that's involved in water quality assessment is ammoniacal nitrogen (NH3-N), a measure of ammonia. Where does ammonia come from in natural water sources, such as a river? What factor ...
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0answers
31 views

For the exactly same income, does a person pollutes more when living in a big city or in a small town? [duplicate]

I had a recent argument with a coworker (we are both engineers) that the amount of pollution (trash+water+air) generated by a person increases with the person's income (we both agreed on that) but my ...
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3answers
189 views

For the exactly same income, does a person pollute more when living in a big city or in a small town?

I had a recent argument with a coworker (we are both engineers) that the amount of pollution generated by a person increases with the person's income (we both agreed on that)... but my coworker ...
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5answers
7k views

Dishwasher or paper plates: which are worse?

After running the dishwasher last night it struck he how much energy it must consume: from heating large amounts of water to the motorized pumps and spinners to the heated plate drying. Then there's ...
6
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1answer
679 views

Types and quantities of air pollutants by fuel, per kWh, for electricity generation?

An often repeated claim is that transitioning from coal to natural gas reduces air pollution... but what pollutants? and by how much? how is the potential reduction calculated? While natural gas (...
3
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1answer
66 views

Soot from factories?

If soot was filtered from power plants, are there any trees or plants that would love to grow in it if mixed in the soil, if it is a sulfur substance? Could it also be filtered and used in the ...
5
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1answer
403 views

Are The Great Lakes Getting Cleaner or Worse?

I live in Hamilton Ontario which a major city right on the shore of Lake Ontario, and I was just doing some personal research on the pollution levels in lake Ontario. Generally the water here has a ...
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2answers
174 views

What impact do CFCs have on ozone? [closed]

I have read that Chlorofluorocarbons (CFCs) are detrimental to the Ozone layer. How exactly? Wasn't Mount Erebus shooting thousands of tons of chlorine per day into the upper atmosphere and over to ...
4
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0answers
69 views

Any sustainability difference between anionic/cationic/nonionic detergents?

Are any of these three types of detergents more or less damaging to manufacture and/or use or dispose of than the others? I realise these are rather broad classes, but this is usually the only detail ...
6
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3answers
96 views

Why refrigerant cooler is more popular than evaporative cooler?

When I look at how houses/offices are cooled in my area I see that refrigerant cooler is far more popular than evaporative cooler. I did not find any company which serves evaporative cooler services/...
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5answers
717 views

What measures could be taken to decrease the air pollution in a big city?

I live in Madrid, where like in most big cities there is a high level of air pollution, especially due to the traffic. The levels of pollution reached the maximum allowable level a couple of months ...
4
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1answer
81 views

How do leaves trap or block particulate pollution?

This article talks about how urban trees reduce particulate pollution. In particular, a study showed that a row of trees in front of houses reduced the level of pollution detected in the houses. ...
6
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3answers
155 views

Is using copper for gutters and roofs a sustainable choice?

I see with some high end housing construction the use of copper for gutters and drain pipes as well as roofs and flashing. Is using copper where it will be exposed to water runoff from rain a good ...
7
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2answers
112 views

Curbing non-exhaust (non-tailpipe) transport emissions of particulates

Small particulate matter (PM10, PM2.5) is a nasty pollutant that is prevalent in a lot of cities. Some of these emissions come from exhausts (tailpipes); regulation has spurred on technological ...
7
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1answer
611 views

Does burning used motor oil to generate heat on-site have a lower impact than sending it for recycling?

The service station next to my office saves the used oil from oil changes to burn in a special heater in the colder months. It is my understanding that used motor oil can be recycled in a number of ...
4
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1answer
47 views

From a sustainability perspective, what is a method by which a city can set priorities regarding pollution? [closed]

From a sustainability perspective, what is a method by which a city can set priorities regarding pollution. In other words, which pollutants are the most important to reduce. So many pollutants are ...
4
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1answer
102 views

How safe it is to produce, use, and dispose of PVC?

Environmental benefits of PVC are touted on what appears to be an industry funded website but there is also some serious criticism of PVC claiming that the manufacture produces dioxin and that ...
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4answers
485 views

What are the steps needed to fix Harbin's smog problem?

Harbin is a north-eastern Chinese city famous for its toxic smog. The smog has been caused by a combination of the weather, stubble being burnt in fields, coal being burnt for the municipal heating ...
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2answers
3k views

Is it good to decompose plastic waste by burning?

Most of the people say its not good to decompose plastic materials by burning, but anyway it has to be decomposed after its use. Is it safe to burn plastics? If not how can we decompose plastic ...
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3answers
184 views

Should municipalities consider rain barrels to be suitable substitutes for rain gardens? (Rain barrel vs rain garden)

My county requires rainwater management to be incorporated into lot plans for new construction if a certain percentage of the lot is impervious. This seems a sensible measure. We are under the ...
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2answers
2k views

How do atmospheric concentrations of CO2 and NOx vary by city and within cities?

What would a well ventilated port city such as Honolulu, Hawaii, USA have for the concentrations (in parts per million) of CO2 or NOx, compared to a city like Linfen, China which is the site of a ...
5
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1answer
203 views

Studies show that toxic flame retardants in foam cushions pollute our living environments. Does this include memory foam?

I have a memory foam mattress and I've read studies** which have found flame retardants such as PBDEs (Polybrominated diphenyl ethers) and "chlorinated Tris" (TDCPP is one of number of chlorinated ...
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4answers
157 views

Cleaner alternatives to gear and chain oils

I use generic gear oil to lubricate my motorcycle’s chain. I have a modern fuel-injected machine, so the chain is the only source of storm-water pollution I can think of. I try to use as little oil as ...
42
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10answers
96k views

Which tree consumes most carbon dioxide and poisonous gases?

I want to suggest to a gardener to plant trees for reducing pollution and poisonous gases emitted from a factory. Which species is preferable to plant in the area around the factory?
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2answers
100 views

Small scale deployment of the ocean cleanup project

The Ocean Cleanup Project aims to collect floating plastic from the oceans. By having static "sea water processors" filter the water. Are there any existing small scale deployments of this idea, i.e ...