We now have to multiply this by
7.48 gal/cu ft
to equate the number to a cubic foot of resin: 2,923.98 x 7.48 = 21,871. So 1 meq/mL is equal to 21.87 Kgr/cu ft. A new resin with 2.0 meq/mL has a total capacity of 43.74 Kgr/cu ft.
How do you choose resin for ion exchange?
(4) a resin shall be chosen
according to the ingredients of the impurities in the original water
. Such as more organic substances in the original water, or removal of the radius of the ion, should choose the larger diameter of the resin. Try to choose high-strength porous resin.
How do you calculate the volume of resin in a bed?
The empty field is calculated using the formula:
Bed volume (L) = Bed height (cm) * Column crossectional area (cm2) / 1000
. Note that this calculation does not take into consideration the extra volume in the conical end cells which are present in some columns for example Chromaflow.
What is resin in ion exchange method?
An ion-exchange resin or ion-exchange polymer is a resin or polymer
that acts as a medium for ion exchange
. It is an insoluble matrix (or support structure) normally in the form of small (0.25–1.43 mm radius) microbeads, usually white or yellowish, fabricated from an organic polymer substrate.
What is ion exchange capacity of a resin?
In general terms, the capacity of an ion exchange resin can be
expressed as the quantity of ions that can be taken up by a specific volume of the resin
. … A measured quantity of cation resin, for example, is fully converted to the hydrogen (H) form with an excess of strong acid and then well rinsed.
How do you find the volume of resin in a column?
The slurry volume required for a desired column bed volume (volume of resin settled by gravity, V
gs
) can now be calculated using the equation:
100 × V
gs
/% slurry.
How do I calculate softener resin?
Multiply the number of people in your family times 70
(gallons of water used per day, national average). Multiply the answer by your water hardness in grains per gallon (to convert mg/l or ppm to grains, divide by 17.1).
What are the types of ion exchange resins?
4 Ion Exchange Systems. Ion exchange resins consists of two main types, i.e.,
cation exchange resins
, that exchange positively charged ions, such as sodium, for calcium, and anion exchange resins, that exchange negatively charged ions, such as chloride, for arsenic.
What is cation exchange resin used for?
Cation-exchange resins are used to
treat hyperkalaemia by accelerating potassium loss through
the gut, especially in the context of poor urine output or before dialysis (the most effective means of treating hyperkalaemia).
What will be the order of selectivity of ion?
Selectivity can be defined as
the relative ability of sample ions to form such a pair
. … This leads to elution orders for anions that are different from conventional ion-exchange chromatography (IC) of anions where cations are excluded from the stationary phase and have little effect on a separation.
Which of the following is an example of ion exchange resin?
The most common examples are
water softening and water purification
. In many cases ion-exchange resins were introduced in such processes as a more flexible alternative to the use of natural or artificial zeolites. Also, ion-exchange resins are highly effective in the biodiesel filtration process.
How many times a resin can be reused?
To avoid performance loss during protein A chromatography cycling, manufacturers often use sodium hydroxide for cleaning as it has the ability to hydrolyze proteinaceous residues and simultaneously sanitize the resin [6-8] yet the maximum number of times a protein A resin can be reused remains variable, ranging from
50
…
How long do ion exchange resins last?
In water treatment applications, typical resin lifetimes can range from
7 to15 years
for a cation exchange resin and 3 to 8 years for anion resins.
What is resin bed volume?
Bed volume:
volume per hours of liquid to be treated
/ volume of resin.
How do you pack a column with resin?
Carefully pour the
resin slurry down along the inside wall of the column
. Pouring along the wall prevents air from being trapped in the resin slurry. After the resin slurry is transferred to the column, rinse the inside walls of the column using a squirt bottle containing packing buffer.
What is compression factor of resin?
Using correct compression factor (CF) targets delivery of a known amount of resin to a calibrated column volume. …
L
cons
= consolidated bed height
, that is, bed height measured after settling the resin at a given linear velocity (cm/hour). A well-packed bed (middle) generates a stable column that offers good resolution.
