lanthanum chloride and activated carbon

[Joe Rice]

I dose lanthanum chloride into a filter sock which is also where I usually keep a bag of activated carbon. I've been taking the carbon out when I dose the lanthanum but I'm wondering if I really need to. Is lanthanum chloride removed by activated carbon?

 

[unbeknownst]

I believe the only way lanthinum can be completely removed is through a 5 micron filter sock. According to my understanding, carbon absorbs much smaller particles and pollutants.

 

[Joe Rice]

I believe the only way lanthinum can be completely removed is through a 5 micron filter sock. According to my understanding, carbon absorbs much smaller particles and pollutants.

The filter sock is for removing the particles created by the lanthanum reacting with the phosphate. My concern is whether the activated carbon might bind the lanthanum *before* it's able to react with the phosphate.

 

[BryanM]

The filter sock is for removing the particles created by the lanthanum reacting with the phosphate. My concern is whether the activated carbon might bind the lanthanum *before* it's able to react with the phosphate.

I don't think there's any concern here with the LC being dosed in to a filter sock that also contains a bag of carbon.

First, they operate on two different chemical principles.
Second, my understanding is the LC binding to phosphate is instant.. This is why I used my manifold to provide tank water directly on top of where I was dosing LC.

 

[Randy Holmes-Farley Verified Community Expert]

The filter sock is for removing the particles created by the lanthanum reacting with the phosphate. My concern is whether the activated carbon might bind the lanthanum *before* it's able to react with the phosphate.

It won't.