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

What best describes the amoebas division, What best describes the amoebas d...

What best describes the amoebas division?  (1) It is a Mode of asexual account in which a one parent is involved. The amoeba cell, which is unicellular, separates into two daug

Show the process of cell-to-cell communication, On the overall process of c...

On the overall process of cell-to-cell communication within the nervous system, what role does the Ca2+ play in the synapse? A) contributes in the biosynthesis of acetylcholine B)

Arctic tundra, The northern most biome on our planet is the arctic tundra. ...

The northern most biome on our planet is the arctic tundra. It is a treeless wet circumpolar band between the polar ice caps and the forests to the south. The predominant plants

What hormones participate in digestive secretions, Q. The releasing of dige...

Q. The releasing of digestive secretions is controlled by hormones. What are the hormones that participate in this regulation? The hormones that participate in the regulation o

What do atp and adp mean, What do ATP and ADP mean? What are the roles of t...

What do ATP and ADP mean? What are the roles of these molecules for the cellular energetic metabolism? ATP is an abbreviation of adenosine triphosphate, a molecule made of aden

Overturn - thermal stratification, Overturn - Thermal stratification T...

Overturn - Thermal stratification The summer or winter stratification is seasonal. Circulation of lake water occurs twice a year, in the spring and autumn (fall) seasons by a

Agro industrial-incriminating factors in feeds, Agro Industrial-Incriminati...

Agro Industrial-Incriminating factors in feeds There are many anti-nutritional factors present in feeds and fodders which affect the utilization of nutrients. Some of these are

Define oxidised starch, Oxidised starch Oxidised starch finds a number ...

Oxidised starch Oxidised starch finds a number of uses in the food industry where a neutral tasting, low viscosity 'body builder' is required as in lemon curd manufacture, in s

Give an account of attenuated vaccines, Question 1 Write short note on ...

Question 1 Write short note on inflammatory response 2 Give an account of attenuated vaccines 3 What is innate immunity? Explain its characteristic features 4 What adjuvants? E

Explain about the physiological accommodation, Explain about the Physiologi...

Explain about the Physiological Accommodation Physiological Accommodation contractile power of the ciliary muscle required to change the focussing power of the eye by ID. Meas

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