What is the procedure for harsh RO membrane cleaning and can this method lower membranes weight?

26 April 2021 1 9K Report

we have some LG membranes that have gained too much weight (20-24 Kg). Can we lower their weight through harsh cleaning, and if so what are the appropriate temperature, pH and chemicals that we can use without damaging the membranes?

Zhao-Yu Ma

It is best to find out what are the main components of the contaminants before performing targeted chemical cleaning. The cleaning agent can be formulated based on the chemical tolerance of this type of RO membrane according to the "Operating Specifications" in Data Sheet provided by LG (https://www.lenntech.com/products/membrane/lg-chem.htm).

Badges
Science topic

Similar topics
Phytochemistry
Extracts

More Azadeh Vahedi's questions See All

Separation of organic acids-HPLC?

Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.

07 August 2024 8,782 3 View

I want to do a CFA in AMOS,I have 10 questions in a questinaire which are in 3 factors .Amos does not run the CFA at all.I can not understand why?

and shows no error or explanation about the reason .any one can help me?I think I am doing each step correctly

20 June 2024 3,295 2 View

I am working on antimicrobial effect of CBD (Cannabidiol), how should I prepare the stock which dissolve in Muller Hinton agar?

I am working on antimicrobial effect of CBD (Cannabidiol). As it is insoluble in water, I prepared a stock of 500 mg/ml (in DMSO). Now I have two problems: 1- I can not dissolve more than 500 mg...

10 June 2024 9,564 6 View

Hello. I want a protocol for peptide coating?

I have 7 peptides with 7 or more amino acids and I want to know that the peptides must be with biotin.

23 January 2024 5,185 0 View

May crafts experts help to improve this material? (preprint of IRAN Handicrafts and Traditional Arts)?

The Concise Version of IRAN Handicrafts and Traditional Arts was provided and the Comprehensive version will be released soon in collaboration with Dr. Senapathy Marisennayya. We also welcome any...

03 September 2023 5,914 4 View

@pm.Deterministic in pymc package of python has TypeError: Deterministic() missing 1 required positional argument: 'var'. How do I deal with it?

I am learning the pymc package from the book "Bayesian Methods for Hackers: Probabilistic Programming and Bayesian Inference". While executing some codes shown in the picture, I got errors. Does...

07 March 2023 2,216 1 View

Do you have information about grow artichokes Jeursalim (Helianthus tuberosus) in salin soil?

Dear researchers Do you have any information about the improvement of salt-contaminated soil by artichokes Jeursalim (Helianthus tuberosus)?

13 February 2023 5,500 2 View

Does somebody have some experience in use of rapamycin and 3-MA for osteoclasts?

Dears I want to interfere the autophagy pathway in osteoclasts using 3-MA and rapamycin. In the literature I found some controversial information about the concentrations. I would ask if...

29 June 2022 7,879 0 View

Cross-validation for Bayesian Regressions in STATA?

Hey all! Do you have any idea how we can implement cross-validation for Bayesian regressions? I'm developing a Bayesian Negative Binomial Regression using STATA. In a traditional Negative...

14 January 2022 4,987 4 View

How to choose blocks in Bayesian analysis?

Hey everybody! I'm implementing a Bayesian Negative Binomial using STATA 17. Because of some colinearity or convergence issues, I needed to put my variables in different blocks in the modeling...

13 September 2021 6,679 3 View

Can anyone explain why there is not any color bands in the middle portion of the tensile coupon?

Details of the Analysis. Static Analysis Composite Layup Continuum Shell Elements FRP Material (Elastic and Hashin Damage)

03 August 2024 8,538 4 View

What is the reason I get 400nm nanoparticles using an extruder with 200 nm membrane for cell membrane coating?

I am trying to coat my micelles and PLGA based nanoparticles with cell membrane using an Avanti mini extruder according to literature . I use 200nm membrane but my particles end up to be 400nm And...

30 July 2024 3,294 3 View

How Can I Apply Hashin Damage Properties to Solid Elements in Abaqus Without Using VUMAT?

Sure, here is the translation: I have a 3D orthogonal woven composite structure where warp, weft, and binder yarns are oriented in three directions. After modeling these yarns and the matrix in...

28 July 2024 8,169 0 View

Are the apoptotic cells is positive for γH2AX ?

It has been documented that apoptotic cells themselves can induce phosphorylation of serine 139 on H2AX (γH2AX) due to DNA fragmentation during apoptosis (doi: 10.1074/jbc.275.13.9390). As γH2AX...

28 July 2024 7,983 2 View

Does it exist some special technique for cutting ceramic membranes for Cross-sectional FESEM images?

Does it exist some special technique for cutting ceramic membranes for Cross-sectional FESEM or SEM images?

25 July 2024 5,482 2 View

How the KwaZulu natal riot affected south Africa?

How the damages of building and shopping centers affected the south African economy?

24 July 2024 5,401 2 View

Correct statistical approach for a hermit crab shell exchange experiment?

Hello, I'm planning a shell exchanging experiment with two marine, hermit crab species inside of a tank. I only have one tank available for this experiment. I plan on running 30-40 shell...

20 July 2024 5,676 3 View

Issues with Malaria Coated Nitrocellulose Membrane Releasing Moisture?

Hello, I am currently working with Malaria Pf/Pan nitrocellulose membranes coated for malaria detection. After drying the coated membranes in an Incubator (overnight at 37°C), I've noticed that...

16 July 2024 7,937 1 View

How can we test a Nafion membrane ?

we have a nafion 117 membrane and we want to know if it has the properties claimed by the sellers. what are the tests available ?

13 July 2024 503 1 View

NH3/NF3/H2 Remote plasma Oxi/nit selective etching mechanism help ??

Hello, I am an Etch Engineer. I am performing etching with high T_ox/Nit selectivity using remote plasma. Etching plasma is formed using only NH3/NF3/H2. 1. I wonder if it would be advantageous...

11 July 2024 8,115 2 View