What is a solution for "recovery" of certain types of elements from seawater by using a membrane? As an example, the recovery of just Lanthanum?

More Mehrnaz Safarnia's questions See All

I want to make a lysing solution to lysis RBC and WBC in the cell counter device but with the human blood the WBC is all in lymph. what should I do?

I need to make a lysing solution to lyse the RBC and WBC for using in cell counter of sysmex k1000. When I use the blood control all parameter are normal but when I used the human blood the cell...

11 February 2024 8,536 0 View

How to quantify Sodium Lauryl Sulfate content in the distilled water?

I have a solution containig some salts and also Sodium Lauryl Sulfate (SLS). How can I identify the quantity of this surfactant?

13 July 2023 9,195 2 View

Why does gel in phase lock tubes come as the upper layer?

I used phase lock tubes for RNA extraction, but after adding chloroform and spinning down the gel came on top of aqueous layer! does anyone know why this might happen? and what should I do to...

25 April 2023 8,718 0 View

How to encounter endogenous bacterial contamination?

Dear fellows I am into micropropagation of calladium. we didn't observe any bacterial contamination during the initiation and first subculture stages. the second subculture was done last week and...

09 August 2022 6,391 3 View

Why i can not replicate PDMS mold out from master with nanoholes?

I have a master with nanohole with diametre ~ 200 nm and a depth of 150 nm. i can not replicate the PDMS mold out from this master, every time PDMS is attached and fill the holes... Does anyone...

08 May 2022 1,143 0 View

2% Methyl Cellulose being separated after autoclave?

Hello everyone! I'm trying to make 2% MC, but after I autoclave the solution the water and the gel phase separate from each other! What can be done about this? Can I put it again on stirrer to...

21 July 2021 7,568 3 View

How can I get the diameter (molecular size) of the drug?

Diclofenac is separated by a nanofiltration membrane and the molecular size of diclofenac is needed to prove the mechanism of size exclusion. I did not find the molecular size of diclofenac...

29 October 2020 7,792 2 View

How do you eliminate and control internal bacterial contamination in plant tissue culture?

Hi dear fellows I am working on micropropagation of Begonia and Gloxinia which in both of them have internal bacterial contamination. I tried ppm and antibiotics in media but both of them have...

20 September 2020 8,423 4 View

How do you do calculation for preparing silver thiosulfate?

hi every body. silver thiosulfate (STS) is an ethylene inhibitors that enhance shoot organogenesis. the following is the preparation of STS according to sigma aldrich web site: Prepare a 0.1...

17 July 2020 4,486 1 View

Suspended air flotation in industrial wastewater treatment?

Hi, I am doing technical due diligence for a technology so-called Suspended air flotation in industrial wastewater treatment. this technology is similar to DAF, but using froth instead of air...

15 April 2020 2,392 0 View

• What the possible Persistent Organic Pollutants and Heavy metals present in fluorspar, sediments, and water bodies around its mining area?

Approximate concentrations are require in compared with the WHO permissible limts

11 August 2024 2,723 1 View

Handling Missing Data and Building a Predictive Model with Incomplete Information ?

I am developing a predictive model for a water supply network that involves 20 influencing points. However, I only have historical data for 10 out of these 20 points. I would like to know how to...

10 August 2024 4,005 2 View

Do interactions between biosphere, carbon cycle, & water cycle impact global warming & interaction between atmosphere & hydrosphere?

How do interactions between the biosphere, the carbon cycle, and the water cycle impact global warming and interaction between the atmosphere and the hydrosphere?

09 August 2024 3,291 2 View

Is it true that $\det(V(A))$ may be only $\pm 1$, depending on $n$, for the last symmetric tridiagonal matrix $A$?

One can try to generalize the Vandermonde determinant in the following direction: Let $A$ be any symmetric $n$-order square matrix. Consider its powers' diagonal elements $(A^k)_{ii}$ and...

08 August 2024 6,690 1 View

RNA later for the preservation of RNA in fecal samples at room temperature for one day (37°C)?

I am planning to collect human fecal samples for metatranscriptomic analysis using MGI. These samples are from indigenous people living in a region with high temperatures. I will have access to a...

06 August 2024 1,367 3 View

If we are using snowball sampling technique, how do we justify the true representativeness of the sample statistically? is there any statistical test?

Are there any statistical methods to justify your sampling technique using SPSS or AMOS?

05 August 2024 9,153 4 View

How to Add Missing Water Molecules in Protein-Membrane Simulations?

I have protein-membrane simulations (PDB, PSF, DCD) and have noticed that water molecules near the protein are not visible in the simulations. How can I fix this issue? Is there a way to place the...

04 August 2024 1,200 2 View

Why is nonpoint source pollution potentially more harmful and difference between point and nonpoint sources of water pollution?

01 August 2024 1,180 2 View

What is the best sampling strategy?

I am conducting a qualitative study that uses interviews to investigate the perceptions of teachers about a particular leadership practice and I am focusing on 3 schools which have a total number...

01 August 2024 8,457 10 View

How do living organisms play a role in the water cycle and why is nonpoint source pollution potentially more harmful than point source pollution?

01 August 2024 7,061 2 View

Saeedeh Mir

Adsorption can be a choice for this purpose to react with specific type of elements

Mehrnaz Safarnia

Thanks dear Saeedeh, but during adsorption, other metals dissolved in solution due to hydrolysis can also interact with functional groups on adsorbents, and separating them after adsorption can be problematic.

Fatima Boukhlifi

Adsorption

Other metals such as Fe, Scandium, etc. can also be absorbed by membranes, however in this instance I plan on recovering only La. Fatima Boukhlifi