Sunday, June 3, 2007

22. Purifiers/Cleansers/Concentrators

(soap, water, membrane sieves, clays, diatomaceous earth, ultrasound, gas diffusion/heat, etc.)

The below video however is a brilliant cross-over example mixing several consumptive use categories at once: waste remediation, energy generation, and water purification all in one! The application is mentioned near the close of the video though the whole video is interesting.

Given that human waste streams like fecal coliform pollution will always exist, some form of remediation will likely always be there. This one is modular, localizable to a watershed, and thus an ingenious application of sustainable technology. It makes use of an energy technology's by-product effects (clean water and energy) to conduct waste water purification. Talk about solving many issues at once! This really is the special category of 'remediation' though I post it here as well because it is a general example of purifiers/cleansers/concentrators as well.

Oxy Hydrogen Process (Water Fuel Cell)
8:25 min


Mark said...

Category might include "surfactants."


Designed closed water systems for industrial cooling and production should perhaps be mandatory--to avoid externalities into the environment.

Mark said...

Instead, surfactants were added to #35 instead.

Mark said...

Safer Water Worldwide
Industrial Toxicologists Develop Cost-Effective, Life-Saving Disinfection

December 1, 2006 — Industrial toxicologists at a non-profit venture founded by Procter & Gamble developed PUR, a water purifier that combines a flocculant -- which separates particles and organisms from water -- and a disinfectant that kills microbes after 30 minutes.

The water is then filtered through a cloth to remove the debris.

PUR is intended as a cost-effective way of treating contaminated water in developing countries -- where this kills an estimated 5,000 children a day -- as well as during a disaster such as hurricane Katrina.

CINCINNATI -- In the United States, with just the turn of a knob, clean, drinkable water is right at our fingertips. That's not the case in many parts of the world. But new technology is making it possible for people worldwide to have drinkable water ... With a stir of a powerful powder.

You wouldn't drink dirty water straight out of a river. But in [peripherially dominated] developing nations [that are sometimes intentionally kept destroyed and without a form of local politics by choice from core countries invasions to keep the area destabilized, poor, and disease ridden intentionally to make it easier to dominate the area], tap water is not a choice.

"People have to share their drinking water sources with their animals. People many times drink from open ponds or streams," Greg Allgood of P&G Children's Safe Drinking Water Program based in Cincinnati, tells DBIS.

...And that leads to deadly water-borne illnesses. Allgood, an industrial toxicologist, is director of P&G's Children's Safe Drinking Water Program, a non-profit venture for the consumer-products giant.

"We need to rapidly address the crisis of so many children dying from unsafe drinking water," he says. One packet of P&G's PUR Purifier of Water can clean about two-and-a-half gallons of water as clean as your tap water. Allgood says the packets contain iron sulphate and calcium hypochlorite, which kill bacteria and viruses while removing parasites and heavy metals.

The packets are being used in Haiti, the Dominican Republic, Africa, Kenya, Malawi, Uganda and Pakistan and are helping save lives from some of the most deadly diseases.

PUR doesn't have U.S. approval yet. [who cares about that 'approval']

Meanwhile, P&G is working with other non-profit agencies to expand the distribution of PUR into other African nations.

On the open market, packets sell for around 10 cents apiece. [expensive! Would be far better to simply take the chemicals and find better sources for them that are cheaper than 10c apiece! Sunlight is a great cleanser; this seems more for emergency water purification instead of a long term solution that can be far more infrastructural in how to handle water.]


Mark said...

Liquid glass: the spray-on scientific revelation
Liquid glass, a revolutionary invisible non-toxic spray that protects against everything from bacteria to UV radiation, could soon be used on a vast range of products.

By Nick Collins
Published: 9:41AM GMT 01 Feb 2010

The spray, which is harmless to the environment, can be used to protect against disease, guard vineyards against fungal threats and coat the nose cones of high-speed trains, it has been claimed.

The versatile spray, which forms an easy-clean coating one millionth of a millimetre thick – 500 times thinner than a human hair – can be applied to virtually any surface to protect it against water, dirt, bacteria, heat and UV radiation.

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It is hoped that liquid glass, a compound of almost pure silicon dioxide, could soon replace a variety of cleaning products which are harmful to the environment, leaving our world coated in an invisible, wipe-clean sheen.

The spray forms a water-resistant layer, meaning it can be cleaned using only water. Trials by food-processing companies showed that sterile surfaces covered with a film of liquid glass were equally clean after a rinse with hot water as after their usual treatment with strong bleach.

The patent for the technology is owned by a German company, Nanopool, which is in discussions with UK companies and the NHS about the use of liquid glass for a wide range of purposes.

Several organisations are said to be testing the product, including a train company in Britain, which is using liquid glass on both the interior and exterior of the train, a luxury hotel chain, a designer clothing company and a German branch of a hamburger chain.

Key to the product's versatility is the fact it can be sold in a solution of either alcohol or water, depending on what surface needs to be coated. The layer formed by the liquid glass is said to be flexible and breathable.

Neil McClelland, Nanopool's UK project manager, told The Independent: "Very soon almost every product you purchase will be protected with a highly durable, easy-to-clean coating ... the concept of spray-on glass is mind-boggling."