High silicates, This could be the Answer

0 Members and 1 Guest are viewing this topic. 221 views

  • Tim
  • Global Moderator
  • Posts: 2,165
  • Liked: 528
  • Thanks Given: 320
  • Received: 441
  • Location: Camberley
  • Tank Thread: https://reefbase.co.uk/members'-tanks-6/tims-first-and-last-upgrade/msg42396/#msg42396

I have very high silicates in my tank as per my icp and coming out of my ro unit, so I have been on the lookout for something to filter the silicates with my ro unit before it gets to the tank.

I was reading a thread on UR and Omotics have hopefully come up with a answer.
It’s a different type of resin that targets silicates, it’s placed after the di pod so it’s not a replacement for standard mixed bed resin but a addition.



The white canister already loaded was £20.41 plus delivery and if going by the product stats it’s a no brainer.
I will hopefully get it hooked up and a icp sent Monday to see what happens.

Below are the stats from osmotics

According to my calculations, with a silicate feed of 500ug/l the cartridge will remove 100% of silicates in 2367 litres of RO/DI water. Remember that your silicate level in RODI should be much lower than 500ug/l anyway so the life expectancy will be correspondingly higher. The calculations are based on our 600ml cartridges. If we end up supplying larger cartridges then capacity will be higher again.

Note that this calculation is based on NO OTHER contaminants being present in the water hence running the cartridge post RO/DI and ensuring a maximum flow rate of 3.8lpm. I recommend running at much slower rates which would be expected in most RO units to ensure the residence time in the resin is maximised to remove silica contaminants.

Applying different feed values gives the following capacities.

100ug/l = 11800litres
200ug/l = 5917litres
300ug/l = 3945litres
400ug/l = 2958litres
500ug/l = 2367litres

These are based on manufacturers data under lab conditions.




Tim

ajm83

  • Andy
  • Global Moderator
  • Posts: 472
  • Liked: 105
  • Thanks Given: 113
  • Received: 71
  • Problems: 99
  • Tank Thread: https://reefbase.co.uk/members'-tanks-6/andy's-85l-nano/new/#new

Reply #1

Quite interested in this as silicate is one of the things which continually rises in my tank despite 0 TDS water.  I gather normal DI resin doesn't remove it very well.

Mike

  • Administrator
  • Posts: 8,249
  • Liked: 1726
  • Thanks Given: 660
  • Received: 1116
  • Location: Manchester
  • Tank Thread: https://reefbase.co.uk/members'-tanks-6/i-conica's-tank-(picture-heavy!)/

Reply #2

I love that egg rack. Why is it not working properly though? Eggs too egg shaped?
Donate to the running of ReefBase

Asco1104

  • Tim
  • Global Moderator
  • Posts: 2,165
  • Liked: 528
  • Thanks Given: 320
  • Received: 441
  • Location: Camberley
  • Tank Thread: https://reefbase.co.uk/members'-tanks-6/tims-first-and-last-upgrade/msg42396/#msg42396

Reply #3

Quite interested in this as silicate is one of the things which continually rises in my tank despite 0 TDS water.  I gather normal DI resin doesn't remove it very well.

Normal mixed bed dosnt remove all of the silicates, it’s something to do with positively and negative charged ions behaving differently with different resins.


Tim

Thanks:


Asco1104

  • Tim
  • Global Moderator
  • Posts: 2,165
  • Liked: 528
  • Thanks Given: 320
  • Received: 441
  • Location: Camberley
  • Tank Thread: https://reefbase.co.uk/members'-tanks-6/tims-first-and-last-upgrade/msg42396/#msg42396

Reply #4

I love that egg rack. Why is it not working properly though? Eggs too egg shaped?


People take eggs from the middle Mike


Tim

HK_Fuey

  • Graeme
  • Administrator
  • Posts: 5,550
  • Liked: 1532
  • Thanks Given: 439
  • Received: 1277
  • Location: Newcastle
  • Tank Thread: https://reefbase.co.uk/members'-tanks-6/graeme's-6x2x2-840l/

Reply #5

Also following along.  I'm pretty sure it's silicates feeding my diatoms  :offended:

Mike

  • Administrator
  • Posts: 8,249
  • Liked: 1726
  • Thanks Given: 660
  • Received: 1116
  • Location: Manchester
  • Tank Thread: https://reefbase.co.uk/members'-tanks-6/i-conica's-tank-(picture-heavy!)/

Reply #6

Oh are they not supposed to roll down?
Donate to the running of ReefBase

Asco1104

  • Tim
  • Global Moderator
  • Posts: 2,165
  • Liked: 528
  • Thanks Given: 320
  • Received: 441
  • Location: Camberley
  • Tank Thread: https://reefbase.co.uk/members'-tanks-6/tims-first-and-last-upgrade/msg42396/#msg42396

Reply #7

They are but it dosnt work


Tim

Asco1104

  • Tim
  • Global Moderator
  • Posts: 2,165
  • Liked: 528
  • Thanks Given: 320
  • Received: 441
  • Location: Camberley
  • Tank Thread: https://reefbase.co.uk/members'-tanks-6/tims-first-and-last-upgrade/msg42396/#msg42396

Reply #8

I plumbed in the media specific for silicates yesterday and sent my ro sample of today, should hopefully get the results by the end of the week.

On my last icp it was 14 ugl with a set point of zero


Tim

Asco1104

  • Tim
  • Global Moderator
  • Posts: 2,165
  • Liked: 528
  • Thanks Given: 320
  • Received: 441
  • Location: Camberley
  • Tank Thread: https://reefbase.co.uk/members'-tanks-6/tims-first-and-last-upgrade/msg42396/#msg42396

Reply #9

So I got my icp results back a few days ago and it wasn’t as good as I hoped.

Last test was 14ugl
This test was 10ugl

So slightly better but not perfect.
There’s another silicate colour changing resin that I might have a go with. If I do I will update this thread.


Sent from my iPhone using Tapatalk

Gav

  • Global Moderator
  • Posts: 1,762
  • Liked: 400
  • Thanks Given: 686
  • Received: 323
  • Location: Highlands
  • Tank Thread: https://reefbase.co.uk/members'-tanks-6/gav's-aqua-oak/

Reply #10

Does the icp specify which form of silica is left in its measurements ?

Asco1104

  • Tim
  • Global Moderator
  • Posts: 2,165
  • Liked: 528
  • Thanks Given: 320
  • Received: 441
  • Location: Camberley
  • Tank Thread: https://reefbase.co.uk/members'-tanks-6/tims-first-and-last-upgrade/msg42396/#msg42396

Reply #11

No it dosnt

http://lab.atiaquaristik.com/share/f2bd273cc6bf8e3fbc72


Sent from my iPhone using Tapatalk

Gav

  • Global Moderator
  • Posts: 1,762
  • Liked: 400
  • Thanks Given: 686
  • Received: 323
  • Location: Highlands
  • Tank Thread: https://reefbase.co.uk/members'-tanks-6/gav's-aqua-oak/

Reply #12

That's a pain , it would have been good to know which as it may point to the weak point , reactive silicate ( which is the equal combination of silica and bisilicate ) which I assume the resin you've fitted should be removing , and colloidal silicate should be remove by your Ro membrane  .

Tags: