Skip to main content

Energy comparison: coal the pros and cons

Image
By
Hello,

Today we're talking about coal and how it's used as an energy source. As you've probably already noticed we're not really big fans of coal. So this post is going to be looking into the pros and cons of coal as an energy source.

General facts

Coal is a black sedimentary rock, made of carbon and hydrocarbons, that is found underground. It is formed by the remains of prehistoric plants and animals being buried deep in the earth under the right pressure. Coal, therefore, takes millions of years to form.

Pros

There are quite a few pros to using coal as an energy source. Firstly, it's cheap with a low cost per energy unit. It is also reliable as it can be burned at all times of day, during any weather and at any time of year. This is a big advantage because a lot of renewables are weather-dependent (solar, wind, ...).

There is also currently an abundance of coal, enough to last a few hundred years. It is also easy and safe to store, although there are worries regarding air pollution.

The coal industry provides millions of people with jobs and provides countless companies with their main energy source. These companies couldn't function as effectively with renewables due to price differences. The coal industry also creates large amounts of the power needed to meet global energy demands.

Cons

Even though we have enough coal to last 200 years, it will run out.
If we still rely on coal as primary energy source at the time coal becomes depleted, we as humanity will be in serious trouble.
https://environmental-conscience.com/coal-pros-cons/

Coal is nonrenewable so it can never be a long-term solution. Another major problem is air pollution. The combustion of coal leads to small particles in the air we breathe. This bad air quality has been linked to asthma, cancer, heart problems & neurological problems (https://www.ucsusa.org/resources/coal-and-air-pollution). The coal industry also produces large amounts of greenhouse gases, which are released into the atmosphere (carbon dioxide and methane). It can also lead to acid rain.

Here's a short explanation from one of our previous posts:
It's formed by NOX & SO2 reacting with water and oxygen which will turn them into nitrous acid (HNO2), nitric acid (HNO3) & sulfuric acid (H2SO4), meaning that instead of rain being formed from just water, it is instead also mixed with acid. While acid rain won't harm you, it can harm aquatic ecosystems and forests. When the rain falls on water, it will mix with the water and over time acidify it. This will make it uninhabitable for animals and plants. When the rain falls on trees and plants, it will kill the trees by pulling life-depending nutrients from the soil and weakens the plants' natural defence systems.
Acid rain could lead to crop failure which would cause global food shortages. Using coal also makes us very dependent on world market prices which will rise as coal supplies run short leading to even higher energy costs.

Another massive problem is that mining is necessary to extract coal. Mining leads to habitat and biodiversity loss. People are relocated from their homes, and the mining and transportation process produces even more greenhouse gases.

Ever so slightly radioactive waste is produced during coal mining. Although most of this is caught by filters, small amounts of radioactive ash and dust escape and are carried around by the wind. Even though this is currently considered to not be a threat to humans, there are fears of an increase in lung cancer.

Lastly, coal mines are very dangerous for workers and hundreds die every year. There are also allegations of human rights abuse in coal mines in Pakistan.

Conclusion

In our opinion, coal is not a good idea. It may not be currently possible to get rid of it completely, but we need more solutions. Coal is not only dangerous to the environment, but it is also bad for our health.


We hope that we have given you some things to think about with regards to coal and the use of it as an energy source. Thank you so much for being here and taking the time to read this post, we hope it has been informative.

Your Green World TeamšŸ’š




Labels:

Comments

Post a Comment

Popular posts from this blog

April Top Tips: ten tips for environmentally friendly travel

By
Hi Everyone! We haven't been very present on the blog again recently but we are back today with ten top tips for environmentally friendly travel. Most forms of travel over long distances (unless you are willing to put in a lot of physical effort) use fossil fuels and are generally not good for our planet. So today we will be giving you a few tips which although won't mean that your travel is 100% planet friendly, will be a good start to doing as much as you can.  Your Green World Blog TeamšŸ’š 1. Use trains and boats rather than planes where possible Planes are awful for the environment. They are, however, extremely practical and so easy to use, cheap...It's hard to avoid them! They are so quick too so you don't have to spend as much time travelling. However, they are really bad for the environment. For example, you could fly once to Edinburgh from Heathrow for the same carbon dioxide levels as driving to Edinburgh 336 times! 2. Fly...
Post a Comment
Read more

Discussion || Should Everyone Switch To Electric Cars?

By
Hi Everyone! Thank you so much for joining me today, as I hop on the blog to discuss whether everyone switching to electric cars would really help the environment. In other words, should everyone switch to electric cars? This is the first part of a two-part series, discussing electric cars, so stay tuned for part two!! I would like to start this post by stating that I am by no means an expert. This is knowledge I have from my own experience, and from research I have done. If anything is incorrect please take it as it is and accept that this is a discussion and I am taking on board all opinions from reliable sources on this complex topic. Electric cars are a huge topic when it comes to sustainability and "saving our planet". There is no debating the fact that electric cars are better for the environment than diesel or petrol once they are on the road. But the production of them is often very polluting, with one study show...
2 comments
Read more

The life of ... an alcon blue butterfly

By
Hi everyone, Today we are going to be looking into the life of an alcon blue butterfly (Phengaris alcon). After mating, the females lay their eggs on marsh gentian, a blue-coloured wildflower. The eggs can only be laid on these flowers, as this is what the newly hatched caterpillars will eat. Although in some alp regions, they can also be found on willow gentians, a close relative of the marsh gentian. Once the caterpillars have hatched from the eggs, their main predator and danger are the ants that swarm below. But high on their plant homes, the caterpillars are safe. However, this isn't where the alcon blue caterpillars are going to stay forever. Eventually, they drop down to the ground using silk strings. With no protection, they are soon dragged off by the ants. The most amazing part is, the alcon blue caterpillars give off the same scent and chemicals as the ant larvae. So the ants take the caterpillars back to their brood chamber, wher...
Post a Comment
Read more

Photo Essay | dolphin spotting boat ride

By
Hi Everyone! Quite a while ago now, me and my family went on a dolphin spotting boat ride, and I've been meaning to share some photos for ages now! We saw so many dolphins very close up and we managed to get some good shots, although it can never be as magical as in person! All photos in this post were taken by me or my family. They were so close to the boat! This photo is stunning! It's under the water! Again - under the water! It was so hard to capture them jumping! This was the boat.... ...
Post a Comment
Read more

Ecotourism: what it is, the advantages and the disadvantages

By
Hi Everyone! Today we wanted to talk about the idea of ecotourism, including the advantages and disadvantages of this concept. If you are looking to reduce your environmental and social impact when travelling, then this is the post for you! Ecotourism is a form of tourism which limits the damage to the environment and local community. It can involve helping in community projects such as planting trees, as well as taking part in local customs and festivals. It helps to keep the local culture alive, while preserving the natural environment.  The advantages are abundant. By helping in a project conserving the environment, tourists gain a new understanding and appreciation for the natural world and may be inspired to make changes in their "real" life to live more sustainably. It provides a valuable insight to a country and community, perhaps also inspiring more respect for different people and the lives they lead. The projects also provide sustainable income sources for locals, h...
Post a Comment
Read more

The life of ... a koala

By
Hello everyone, Today we're talking about koalas. Also known as koala bears, koalas are marsupials. So they're actually not bears. Koalas, phascolarctos cinereus , are tree dwelling and probably best known for spending most of the day sleeping. They live for up to 15 years in the wild although captive koalas generally live for longer. Koalas have a stout, gray body and a cream-coloured chest. They have a broad face, small yellow eyes and big fluffy ears. In adaptation to climbing, their feet are strong and clawed. Adult individuals in South Australia weigh 14kg and are 60-84cm big. Their Eastern cousins are considerably smaller. Koalas are found in Eastern and Southern Australia, where they live in eucalyptus trees. They feed on the leaves of these eucalyptus trees, eating up to 1.3kg a day. With a body weight of up to 14kg, this means they eat just under 10% of their body weight every single day. However, the le...
Post a Comment
Read more

Animals 36-40 in our '50 incredible animals' series

By
Hi, As you probably noticed, we took a break from this series, mostly due to having just too much to do. But we're back now with the last three posts. 36. The Pinocchio frog The Pinocchio frog can be found in the Foja Mountains in Indonesia. They mainly eat insects, although little is known about them. They are named because the males have a spike on their noses. They were only discovered in 2008, and this was completely by accident! It remained unnamed scientifically until over ten years later when it was given the name " Litoria pinocchio " . There is very little information about them but Wikipedia states that "the male Pinocchio frog inflates its nose when calling, and the nose decreases in size when the frog is calm and quiet," which I think is hilarious and so interesting! 37. Snub-nosed monkey Especially noticeable due to their curious looks, the snub-nosed monkeys can be found in the forests of central China and northern...
Post a Comment
Read more

Animals 21-25 in our '50 incredible animals' series

By
Hi Everyone! Here are the next five animals in our current series! We hope you learn something from this. 21. Stick insect Stick insects are masters of disguise. They look like twigs or leaves. This strange appearance makes them hard to spot when stationary. Stick insects are herbivores, feeding on leaves, and can live for up to three years. Their habitat includes most tropical and subtropical regions, but there are a few species that live in temperate areas as well. There are roughly 3 000 different stick insect species! Not much more is known about them, because they are difficult to find. The two main threats to their populations are the pet trade and people killing them so as to frame their carcasses, like butterflies. Their conservation status  ranges from critically endangered to least concern  - so basically every category that is on the list! 22. Glass frog The glass frog is, well, see through. You can literally ...
Post a Comment
Read more

Killing invasive species: necessary?

By
Hi everyone, Today's topic is a rather controversial one: is killing invasive species necessary? We'll take it apart for you to come up with your own opinion. Enjoy! Definition Firstly, let's clarify what an invasive species is. An invasive species is a species that is not native and most likely causes harm to the ecosystem where it now lives. This does not include animals that migrate to another area. Why is it a problem? Depending on the species and the ecosystem, invasive species can cause a lot of harm to their surroundings. Often invasive species have no predators in their new habitat and reproduce in such large numbers that they massively overpopulate, causing death for other species. Or they bring sicknesses the local animals are not accustomed to, and that kills them. For example black and brown rats are an invasive species on the Galapagos Islands : Black and brown rats were introduced to the Galapagos Islands in the 17th ce...
Post a Comment
Read more

Coral reefs

By
Hello! We would love to introduce you to the topic of coral reefs and especially coral reef bleaching, as it is a greatly ignored but certainly significant topic. Have fun! 5 coral reef facts 1. The Great Barrier Reef is the largest living structure on the planet and is 2300 km long! 2. Less than 0.1% of the world's ocean surface is covered in coral reefs. 3. At least 25% of all marine animals live there. 4. Coral reefs are often known as the rainforests of the ocean. 5. In 1 square kilometre of coral reef, up to 35 tons of fish can be 'produced'. The 5 biggest coral reefs in the world 1. Great Barrier Reef (near Australia) 2. Red Sea Coral Reef (near Egypt, Israel and Djibouti) 3. New Caledonia Reef (Pacific Ocean near New Caledonia) 4. The Mesoamerican Barrier Reef (near Mexico, Belize, Guatemala and Honduras) 5. Florida Reef (Atlantic Ocean/Gulf of Mexico near Florida) What is coral? Coral is actually made up of small anim...
Post a Comment
Read more