There is no simple solution that I know of. There is no whole house practical solution that I know of. For drinking water the primary methods are distillation, activated Alumina (aluminum oxide), reverse osmosis, fluoride ion exchange resin and bone char. You can purchase the RO, activated Alumina or fluoride ion exchange resin systems. For DIY the bone char is fairly easy to use. Bone char also removes a number of other contaminants. See:
-----Original Message----- From: Dan Nave [mailto:bhangcha...@gmail.com] Sent: Tuesday, July 20, 2010 11:01 AM To: silver-list@eskimo.com Subject: EXTERNAL:Re: CS>Pesticide filter uses silver nanoparticles Sure, distillation. Anything else? What about that stuff you add to fish tank water to neutralize the chlorine? Dan On Tue, Jul 20, 2010 at 12:38 PM, Garnet_LDN <garnet_...@austin.rr.com> wrote: > Distillation. > > www.wholesalewaterdistillers.com > > They have a one gallon counter top distiller for ~$100, even available with > a glass > collection jug. > > Janet > > > Dan Nave wrote: >> >> Steve, >> >> Are you aware of any methods to remove fluoride from city water? >> >> Dan >> >> On Mon, Jul 19, 2010 at 10:40 PM, Norton, Steve <stephen.nor...@ngc.com> >> wrote: >> >>> >>> This is interesting. A study has shown that silver nanoparticles >>> completely >>> remove endosulfan, malathion and chlorpyrifos from water. The mechanism >>> of >>> removal is adsorption followed by catalytic destruction. A household >>> filter >>> that uses the technology to remove pesticides from water has been >>> developed. >>> >>> - Steve N >>> >>> http://www.rsc.org/chemistryworld/News/2007/April/20040701.asp >>> >>> Pesticide filter debuts in India >>> >>> A domestic water filter that uses metal nanoparticles to remove dissolved >>> pesticide residues is about to enter the Indian market. Its developers at >>> the Indian Institute of Technology (IIT) in Chennai (formerly Madras) >>> believe it is the first product of its kind in the world to be >>> commercialised. >>> >>> Mumbai-based Eureka Forbes Limited, a company that sells water >>> purification >>> systems, is collaborating with IIT and has tested the device in the field >>> for over six months. Jayachandra Reddy, a technical consultant to the >>> company, expects the first 1000 units to be sold door-to-door from late >>> May. >>> >>> 'Our pesticide filter is an offshoot of basic research on the chemistry >>> of >>> nanoparticles,' Thalappil Pradeep who led the team at IIT Chennai >>> told Chemistry World. He and his student Sreekumaran Nair discovered in >>> 2003 >>> that halocarbons such as carbon tetrachloride (CCl4) completely break >>> down >>> into metal halides and amorphous carbon upon reaction with gold and >>> silver >>> nanoparticles1. >>> >>> Pradeep said this prompted them to extend their study to include >>> organochlorine and organophosphorous pesticides, whose presence in water >>> is >>> posing a health risk in rural India. In research funded by the Department >>> of >>> Science and Technology in New Delhi, his team found2,3 that gold and >>> silver >>> nanoparticles loaded on alumina were indeed able to completely remove >>> endosulfan, malathion and chlorpyrifos - three pesticides that have been >>> found at elevated levels in Indian water supplies. >>> >>> Use and recycle >>> >>> The mechanism of removal is 'adsorption followed by catalytic >>> destruction', >>> Pradeep explained. 'The chemistry occurs in a wide concentration range of >>> environmental significance.' He added that tests proved silver particles >>> from the filter are not released into the water. The IIT study found that >>> gold particles perform better in the case of endosulfan. However, for >>> cost >>> reasons, the commercialised filters use only silver particles, which >>> range >>> in size from 60 to 80 nanometres at a concentration (on their alumina >>> support) of 33 parts per million. >>> >>> 'Based on consumption patterns of a typical Indian household, the filter >>> is >>> designed to have enough nanomaterials to provide 6000 litres of >>> pesticide-free water for one year,' Pradeep said. 'After that, the >>> company >>> will recycle the filters to recover the silver.' >>> >>> Use of nanoparticles for environmental remediation is an emerging area of >>> research worldwide. Nanoscale iron powders had been shown to degrade >>> other >>> pesticides, including DDT and lindane4, 'and there are reports about the >>> use >>> of nanomaterials for removing arsenic, heavy metals and fluorides,' said >>> Pradeep. 'But ours is the first product to hit the market,' he said. >>> >> >> >> -- >> The Silver List is a moderated forum for discussing Colloidal Silver. >> Rules and Instructions: http://www.silverlist.org >> >> Unsubscribe: >> <mailto:silver-list-requ...@eskimo.com?subject=subscribe> >> Archives: >> http://www.mail-archive.com/silver-list@eskimo.com/maillist.html >> >> Off-Topic discussions: <mailto:silver-off-topic-l...@eskimo.com> >> List Owner: Mike Devour <mailto:mdev...@eskimo.com> >> >> >> >> > >
