Water purification of arsenic

The problem of water purification from arsenic has recently become very urgent due to the fact that the WHO (World Health Organization) requirements for the content of arsenic in drinking water have radically changed. Previously, the permissible level of arsenic in water was 50 µg/l, now this figure has been reduced to 10 µg/l. Due to this, the vast amount of water resources in the world has exceeded this limit. The problem is especially acute for the USA, the countries of the Central Asian region and the Far East, Japan, China, India, Bangladesh, Mexico, Spain. In some cases, the excess concentration of arsenic in drinking water is so high, that clinical signs of mass poisoning of the population already arise.

Conventional water purification systems for arsenic removal are not effective enough and don’t allow water purification in small and separate systems.

The material PANION 140 is designed specifically for household and local water purification systems of 3- and 5-valence arsenic. Compared to existing sorbents, PANION® material provides faster water purification due to its fibrous structure, which allows their use in thin filter layers, which in turn significantly reduces the size of the filter. It is easy to use, especially in domestic water purification systems. 

Fibrous ion exchanger PANION 140

PANION 140 — fibrous ion exchange filtering material for selective removal ions of Arsenic (III), Arsenic (IV) and heavy metals from drinking water.

Applications

• Water purification from ions of Arsenic (III), Arsenic (IV), heavy metals;

Technical specification*

Functional groups	Nanoparticles of FeOOH, which are involved in polymer fibrous matrix
The base polymer	Anion exchanger with tertiary amino groups on base of polyacrylonitrile (PAN) fiber
Content of FeOOH, mmol/g	0,9 - 1,3
Temperature working range	0 – 60°C
pH working range	5 – 10
Textile forms	Staple fiber: cut length 30-70 mm. Non-woven needle-punched fabric: surface density from 200 to 1000 g/m2; width of the fabric up to 1600 mm, thickness from 2 to 10 mm. On special request the others textile forms can be produced: threads, cloths, bands, short staple fiber etc..
Stability against aggressive media	Stable against concentrated acid solutions, Na2CO3 and all organic solvents. Sorption capacity is reduced in high concentrated acid solutions
Regeneration	Not regenerating
Adsorption activity on ion As (BV - quantity of sorption layer volumes purified, initial concentration – 100 microgram/m3)

* - on a customer request fibrous ion exchange material with other physical and chemical properties can be produced.