Electrodialysis, Biology

Assignment Help:

This method is used for the desalination of water i.e., for the removal of dissolved mineral salts, acids, alkalis and also the radioactive substances from the effluents. Electro dialysis is performed in a multi-chamber membrane apparatus, known as electrodialyser, under the influence of electric current.

An electrodialyser is divided by alternating cation exchange and anion exchange membranes into concentrating and desalinating chambers.

These members have fixed charge-negative or positive-whereby they become impermeable to either anions or cations. Under the influence of electric field the cations motion to the cathode penetrate through the cation exchange membranes and retained by anion exchange membranes while the anions moving to the cation exchahge membranes and are retained by cation exchange resins . As a result, the ions of both the charges are removed from one row or chamber and desalinated water from the other.

This technique is useful for the production of fresh water on arid-coastal regions.  In Japan, electrodialysis eg sea-water is the principal source of salt.

 

 


Related Discussions:- Electrodialysis

Types of matter, Kinds of Matter On basis of its chemical organization,...

Kinds of Matter On basis of its chemical organization, matter id of three categories elements, compounds and mixture An element is composed of obviously, earth similar atoms

What organisms make glycogen, What organisms make starch? What is it used f...

What organisms make starch? What is it used for? What organisms make glycogen? What is it used for?

Define the genetic growth pattern of infant, Define the genetic growth patt...

Define the genetic growth pattern of infant? It takes 1-3 years for an infant to establish his own genetic growth pattern. Once this figure is established (such as height-for-a

How rapidly a person breathes, Considering the nature of negative-feedback ...

Considering the nature of negative-feedback control and the function of the respiratory system, what effect do you predict that a decrease in CO2 in the internal environment would

Explain dietary diversification - iron deficiency anaemia, Explain the Diet...

Explain the Dietary diversification - Iron Deficiency Anaemia? It aims to ensure that deficient populations have access to foods rich in iron and also foods rich in vitamin C (

Explain the fermentability or degradability, Explain the Fermentability or ...

Explain the Fermentability or Degradability? As you are aware that colon contains over 400 known species of bacteria that exist in a symbiotic relationship with the host. All f

What are autotrophic beings, What are autotrophic beings? What are heterotr...

What are autotrophic beings? What are heterotrophic beings? Autotrophic beings are those that can make their own food, i.e., that make organic material from inorganic compounds

Short-term and long-term effects of forest destruction, List the short-term...

List the short-term and long-term effects of forest destruction  (a) on hillsides, (b) in the tropics.  (a) Deforestation on hillsides exposes the soil to erosion by rain and l

How does a population differ from a community, How does a population differ...

How does a population differ from a community? A population having of all members of a single species that live in an area, while a community consists of all organisms of any s

Applications of transgenic animals, A pp l i c a tion s of transgeni...

A pp l i c a tion s of transgenic animals Current applications of gene transfer in farm animals include the improvement of product quality and quantity, disease resistan

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd