Browse Month by July 2015
Matter and energy

To Secure Clean Water

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.

Life

Get Away Pollutants During Home Reconstruction

Appendices-HealthyHomse-UpstairsLivingArea_fmt

Remodelling can make an older home feel new again. But it’s at the same time filling the air with dangerous chemicals and other contaminants that put your family’s health at risk. That’s why it’s important to protect your home’s Indoor Air Quality (IAQ) throughout the entire reconstruction process.

Demolition is generally the least pleasant and most dangerous step in reconstruction, at least in terms of IAQ. Dangerous pollutants are released by tearing, stripping and sanding paint. This is especially true for homes built before the late 1970s, when lead based paint and asbestos insulation were still commonly used in construction.

Solution: Seal off remodelling areas before you begin. Try to enter the room from the exterior only.

After the completion of demolition, the installation of new components comes. This process has its own IAQ issues. If materials such as stone, tile and wood are cut inside the home, this can create dust that triggers breathing problems, runny nose and watery eyes, especially in those with allergies.

Solution: Protect the indoor air from unnecessary contaminants. Ask your contractor to cut materials and tile outside so that most dust stays outside as well. Leave windows open at least a crack at all times until the fumes are gone.

The key is to plan ahead and pay attention to Indoor Air Quality at each critical stage of reconstruction. When the project is done, “fresh” your new home with a high-quality air purifier to reduce risks of leftover pollutants.

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.

EXHAUST FAN AND 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 GENERATORS:

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

A Wonderful BBQ Wedding

bbq wedding

My high school best friend was getting married in Italy. She hosted a BBQ wedding on a piece of big grassland. Honestly, I wasn’t really interested in joining the party at the beginning as it took me 12 hours to land there. But turned out this trip and the party were so much wonderful.

The BBQ party was the highlight of the wedding and it started at evening. The fuel they used was coconut shell charcoal instead of gas or coal. This reflected the couple as Earth lovers and the wedding theme as natural. One of the benefits using coconut shell charcoal is that there’s no smoke. Guests could chat and socialise easily without being “covered” by the smoke.

Because of the consistent heat for over four hours using coconut charcoal made it a very a convenient method of barbecuing (and also economical). There’s no need for anyone to replenish the grill with more fuel during cooking.  After the party, there was little ash produced that allowed us to clean grill a lot easier after barbecuing.

This really inspired me and I tried to use the same fuel for barbecuing with my kids after going home. Well, I can say, coconut charcoal is definitely one of the cleanest and cheapest ways of enjoying a grilling meal. It’s really something which should be given a thought as once you switch to coconut charcoal you won’t feel like trying another fuel for your grill. There’s no health risk, which is my particular concern for the kids, and the meat tastes just as it is. I even find it amazing as there’s no interruption in the middle to refuel my BBQ.

Matter and energy

Carbon FAQs – What raw materials can be used to made carbon?

coconut_shell_charcoal_precept

Basically, any carbonaceous material can potentially be activated.  The common raw materials include, for example, wood (soft & hard), coal, coconut shells, peats and others. Since activated carbon is manufactured from naturally occurring raw materials, its properties will vary. It is necessary to understand the nature of these raw materials, if you would want to purchase carbon for whatever your purpose.

Wood may be activated by one of two methods, i.e. steam or chemical activation, depending on the desired product. The carbon is usually supplied as a finely divided powder which since produced from waste materials such as sawdust, is relatively cheap and can be used on a “throw-away” basis.

Coal is also a readily available and reasonably cheap raw material. The type of activate obtained depends on the type of coal used and its initial processing prior to carbonisation and activation. It is normal procedure to grind the coal and reconstitute it into a form suitable for processing, by use of a binder such as pitch, before activation. Generally, coal contains bigger pores that make it a fairly well adsorbent for gas and air application.

Coconut shell is another common type of raw materials. It contains about 75% volatile matter that is removed largely by partial carbonisation, to minimise shipping costs. The iodine number is high of coconut based carbon, which indicates a higher adsorption capability for molecules. The ash content is normally low and the hardness is relatively higher that makes the carbon hard to breakdown in water. Because of these features, coconut-carbon is a very good filter media for water, beverage and air industries to produce cleaner liquid and air.

Find more about charcoal made from coconut shells http://www.cocarb.com/

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?

granular_activated_carbon_from

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.