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Matter and energy

Activated Carbon Filter Guidelines

Activated carbon filter

AC filters have a limited lifetime. Eventually, the surface of the AC becomes filled with adsorbed pollutants, and no further treatment occurs. ‘’Break-through” takes place when pollutants break through the filter and emerge in the treated water. When it happens, contaminant concentrations in the treated water can possibly be even higher than those in the untreated water. The cartridge then needs to be replaced. Knowing when breakthrough will occur and when to replace the cartridge is thus a major problem with AC treatment.

Unfortunately, unless the pollutants are smelled or tasted, they can be unknowingly consumed. In most cases, break-through can be positively verified only by chemical testing. Frequent chemical testing is impractical and expensive. Some cartridges are sold with predictions about their longevity. But these are generally only crude estimates since they do not consider the characteristics of a specific water source.

The retailer from whom you purchase the treatment device can better estimate a filter’s useful lifetime based on water usage (flow rate) and pollutant concentrations, shown in the chemical analysis. To make the most accurate estimates, you should learn what these amounts are before purchasing the system. If pollutant concentrations increase over time, and without testing done to reveal the change, such estimates may not be very practical or useful.

AC filters can be excellent places for bacteria to grow. A filter saturated with organic contaminants, or one that has not been used for a long time, provides ideal conditions for bacterial growth. A saturated filter supplies the food source for the bacteria. It is still unclear whether bacteria growing on the carbon pose a health threat. Some manufacturers place silver in the AC to prevent bacterial growth. The effectiveness of the silver has not been independently verified. In addition, the silver may contaminate the drinking water.

Human interrelationship

My Neighbour’s Smoke Is Killing Me


I have a new neighbour. She is friendly and is a quiet dweller. Everything seems perfect but frankly, her nonstop smoking is making me sick. I was so miserable that I’d pay anything for a good air purifier. I just needed to know which one to get.

Nothing, of course, is better than simply asking her not to smoke indoors. However, if others smoke there is no way that you can force them to kick the habit. Beyond asking her to walk a few hundred feet down the sidewalk, what can I do to protect my health? The best answers I know of are really sealing whatever the cracks are between the apartments and also getting a good air purifier. A good air purifier consists of a high quality carbon filter. Finally, I chose a HEPA air purifier.

By using a HEPA air purifier, I can enjoy clean air in your home. It removes up to 99.97% of ultrafine particulates from the air, and can protect me from secondhand smoke. The trick lies on the activated carbon filter inside the HEPA air purifier. Once I start using one I quickly notice how much easier it is to breathe – and how much better I feel overall.

The need to maintain good indoor air quality in the home is obviously important when some of the residents suffer from respiratory ailments. Respiratory conditions are undoubtedly worsened by secondhand smoke, but even totally healthy people (like me) can suffer problems due to continuous exposure. I had a hard time getting a good night’s sleep when I needed to breathe in secondhand smoke; I went through my days worn out and weary.

Matter and energy

Special Treatments for Pollutants


Pollutants come into different categories. Despite most air purifiers help remove pollutants, not every cleaner has the ability to tackle each pollutant in the same manner. Let’s look into the different type of pollutants in the air around us.

Pet Dander

Pet dander is a powerful allergen that can trigger severe reactions in to allergy-sufferers. The most common treatment would be an air purifier that contains a type of HEPA filter. True HEPA filters are certified and best known for removing allergens of all kinds, especially pet dander.

Dust, Dust Mites and Pollen

If you want to remove more solid particles floating around in the air like pollen or dust mites, a HEPA filter is all you need. Another option that’s especially good for dust is an ionizer. Ionizers are very similar to air purifiers, only their technology utilizes negative ions which attach in the air to the positively charged particles of dust.

Mold and Mildew

Most households have experienced some kind of mold or mildew problems which occur in humid environments. Once mold has spread, it produces airborne spores that can be dangerous to your health. The best treatment out there is an air purifier with a certified HEPA filter, and if it comes with an inbuilt ionizer even better! HEPA filters are great at removing solid particles out of the air, while Ionizers produce negative ions that attach to the spores and neutralize them.

Atmosphere, climate, and weather

A Survival Water Filter – Part 1


In the world we live in, we never know what is coming next. Fires, hurricanes, and other natural disasters can lead to disastrous situations. That is why we should always be prepared to be able to survive in many conditions. One key factor to survival in all situations is to get clean and safe water for drinking. In this article I will share how to build a filter for water purification, using only materials found in the wilderness (with the exception of cloth). I will also show you how to finally boil your water for purification in the wilderness.

So let’s get started!

First, gather all needed materials. you will only need one tool – A knife. Here is the list of the materials we will be using:

– Birch Bark

– A Small Live Branch or Small Live Plant

– Charcoal

– Gravel

– Stones

– A piece of clothing

The first thing we are going to need is the birch bark. We will use this bark to hold the filter together in a cone shape. Cut the bark in a half circle with a diameter of roughly one foot. Then, roll the bark into a cone. Of course, you could also use the top of a waterbottle that is cut in half (if you can find it during emergency situations).

The second item is a small live branch. Normally I wouldn’t suggest to cut live branch, but we are talking about a survival situation. We need to use the live branch or plant to tie the cone shape together.

What’s next? Continue on Part 2.


A Survival Water Filter – Part 2


The third and most important item is the charcoal. This is the part of the filter that removes the most impurities from the water. In order to get charcoal in the wild, you must make it yourself. The first step in making charcoal is building a fire. Once you have your fire, put one large log on the fire and wait until the log is totally burned but has not turned into ash. Using another stick, take the burn pieces of charcoal off of the log. Keep these pieces safe until the building process.

The next materials include stones and gravel. If you are in an area that does not have sand, then do not waste your time looking for it because it is not the most important part of the filter. You only need about a handful off each of these materials. The last material is a type of cloth. Although it is not found in the wild, cloth may be the easiest item to retrieve on this list.

After collecting the materials, we can start build the filter. It is actually very simple and easy. The first thing that you should do is roll the bark into a cone and use your knife to poke a hole through the overlapping part. String the leaf or branch that you picked earlier through the hole and tie off the end using a square knot.

Now, take your pieces of charcoal and put them in the center of the piece of cloth you have. Now bring all the corners of the cloth together so the charcoal sits in the bottom. Now, covering the charcoal, use your hand to smash it into a powder. Put the part with charcoal into the cone and spread out the corners so you can see the charcoal.

Pile on the gravel and then the rocks and your filter is set to go.

After that, boil the water For purification. We will need an area where clay is under the soil. We will use the clay to line the hole in the ground so that no water leaks into the earth. This is pretty simple, dig two holes, one for boiling and one to get clay. Take the clay and add a little bit of water to it so you can apply it to the hole. Seal off all the dirt. Now you can pour water into it and get your fire going along side it. You will need to find dry rocks to do this. Put a few rocks in the fire and once they have been in the fire for a while, you can put them into your water using another two sticks. You know its boiling when its bubbling.

Now you know how to put together a water filter in the wild. But this method for water purification is for SURVIVAL CONDITIONS ONLY, and it is not the best method of purifying water if you are near civilization. During “normal” times, find and install a qualified water filter for your drinking water.

Human interrelationship

When Should I Change My Refrigerator’s Water Filter?


Did you know that if you have a refrigerator with an ice maker or water dispenser, you probably have a water filter? Newer refrigerator models usually provide water filtration and dispense ice and water through the door. This filtered water provides you and your family with great tasting ice and water. But the key to continue having the best tasting and cleanest filtered water is to follow a regular maintenance schedule for your fridge filter.

Water travels through miles of piping before reaching your home. Along the way it may pick up impurities. Water filters and filtration systems can reduce these contaminants. Failure to change your refrigerator water filter allows contaminants (e.g. lead and chlorine) and newly formed bacteria to saturate the filter, forcing the filter to leak contaminants back into the water. Most refrigerator water filter systems do a good job at filtering out certain contaminates that cause bad odour and taste, but refrigerator water filters are not necessarily designed to eliminate some of the more harmful water contaminants. For these contaminants, other water filtration systems should be used in addition to your refrigerator’s filter.

How Do I Change My Refrigerator’s filter?

Many manufacturers have taken extra steps to ensure that the refrigerator filters are easy to access and replace. In most cases, changing your refrigerator water filter is quite simple. Each manufacturer’s refrigerator water filter system is different, and you should consult the owner’s manual to locate the filter and follow the directions for removing and replacing it. Changing your refrigerator’s water filter only takes a few minutes and will keep you and your family drinking clean, great tasting, filtered water.

Matter and energy

To Secure Clean Water


750 million people around the globe are lacking in safe drinking water, and nearly all of them in the developing countries. Africa is the region that lacks water the most. Insufficient water supply brings a huge health impact, as it kills lives.

Clean water is getting scarce, when nearly a third of the world’s population live in water-stressed areas. Meanwhile, the number of people becoming aware of risks of drinking contaminated water is increasing. What should we do, and what can we do to secure this scarce resource? Water filters will give you unimaginable solutions to this problem.

A water filter can effectively remove impurities, as well as unpleasant odour from the water. By far the most common type of water filters are those based on absorption, most of which use activated carbon. activated carbon filters can effectively trap contaminants, and eliminate odour in the water. They are high absorbent sponges, removing larger particles like sediment and silt from the water, so they’re no longer present in your consuming liquid. And of course, activated carbon filters will also make sure the end result has less odour and let the water tastes real. This is because they reduce the amount of chlorine and other contaminants that can make your water smell unpleasant.

Be sure that you are selecting the right activated carbon filters from the selling racks? First, we should choose the water filter which activated carbons are made by good source materials. There are several types of source materials for producing activated carbon such as coal, wood, coconut shells and peats, among them, coconut shells stand out. Coconut shell-based carbons tend to be harder and thus more resistant to abrasion. They also have very effective adsorbing capacities, and show superior removal performance in catalytic applications, such as drinking water treatment. We also need to choose a filter manufacturer that has its own carbon production facility, so that the quality of carbons is controlled and reliable.

Your body is about 70 percent water, and these tiny molecules of H20 are important for every biological functioning inside our body. Bear this in mind as you make decisions about securing clean water for you and your loved ones.

Matter and energy

Control smells in the grow room

grow room

So you want to know about odour control in the grow room. This is just a list of the things you can use to control the odour. Ideally, use a 2-prong approach for the best results. This entails running an ozone generator and an exhaust fan with a carbon filter.


There are several ways to run the carbon filter. First, pre-exhaust the area where you need to exhaust heat (and/or humidity) from the grow room. In this setup, the carbon filter goes into the grow room, where air is drawn first through the filter, then exhausted out of the room. The size of the filter has to be matched to the size of the fan so that the air going through the filter has enough contact time with the carbon to do the thing. If you pump the air through the filter too fast, the carbon can’t do it’s job. So, based upon the amount of heat you’re going to remove, you first determine the necessary fan size, then pick the correct filter for the fan. Don’t confuse with the order.

With the right fan/filter combo, all of the air being exhausted will be clean enough to blow directly outside (or into your house in the winter to utilize the heat and high quality oxygen rich air).

The other way to run a carbon filter is to simply connect the fan to the filter and put it into the area that you’re concerned about with no ducting. In this way, a larger fan with more air movement can be used because the air is being repeatedly drawn through the carbon filter. With this approach, the larger the filter and fan you choose the better.


Ozone use for odour control has a debate of pros and con’s, but one of the benefits is that it kills bacteria, not only in the growroom, but in the exhaust fan and carbon filter. So, if you’ve got an ozone generator treating the air in the room before it enters the carbon filter, it will kill the bacteria that can shorten the life of the carbon.

This dual approach, using ozone and carbon filter to deal with your organic fertilizer odour issues is probably the best overall approach.

Matter and energy

DIY Activated Carbon?

make activity carbon

We are sometimes asked, “Please show me how to make activated charcoal at home.” But first, you need to understand team activation, one of the most common ways to “activate” carbon.

Handmade Steam-Activated Carbon
Is it possible?

Steam-activation is primarily used for coconut charcoal and coal. In the production of steam-activated charcoal, first the coconut shell or coal is heated to create a char. This char is then activated high temperatures of 1,700° to 1,800°F with steam in the absence of oxygen. The activated charcoal is then cooled off. The very high temperatures required for steam activation is impossibly achieved in a conventional oven (260 °C). Thus, this method is all but limited to industrial technology.

Another huge limiting factor is the cost of production. The world today uses a huge amount of activated carbon annually and so production has to be on an industrial scale to control the price. Even if money was not an issue, the quality would likely also be an issue, since cooking temperatures and times that require professional knowledge are critical.

So, how can you make steam activated carbonactivated carbon produced by trusted carbon manufacturer. This is the most effective and yet affordable way.

Matter and energy

Which type of GAC filter system do I need?


A filter with granular activated carbon (GAC) is a proven solution to remove certain chemicals (in particular organic chemicals) from water. There are commonly two types of GAC filter system, including a whole-house filter or a point of use filter. Each system has its own features and is used in different applications. Sounds confusing? Don’t worry. Here it’s a guide for to find out your Mr. Filter.
There are several factors to consider:

  • The type and amount of contaminants in the water,
  • Other chemicals in the water,
  • Water use, and
  • Exposure pathways that need to be eliminated.

For those who have no clue about exposure pathways, exposure pathways are the ways chemicals enter your body. Some chemicals may cause harm if they are ingetsted while some are harmful if they are breathed in, some if they enter through the skin. Sometimes people are exposed through a combination of exposure pathways.

An under-sink filter protects people from ingesting the chemical by treating the drinking water only from that tap. It will not protect people from inhaling the chemical while showering or bathing, nor will it protect other water faucets.

A whole-house filter system treats all water traveling to any faucet in the home. It removes the chemical before it can be ingested, breathed in, or absorbed by the skin during washing or bathing.

Remember, no matter which filter system you’ll use, use only a licensed filter supplier. For either type of filter system, consistent maintenance and periodic filter or GAC replacement is essential to ensure effectiveness and prevent bacterial build-up.