Membrane Material And Performance Characteristics Of Filter Membrane
In the shape of the thin and round precut disc, membrane filters are a good tool for fast and high-efficient filtration of liquid and gas samples. We can find membrane filters made of different synthetic materials for your application, such as cellulose acetate, cellulose nitrate(collodion), polycarbonate, polypropylene, and polyamide (nylon). With the exception of polycarbonate filters, most other membrane filters contain a 50–85% filtering surface.
When you are selecting the membrane filters, you may find so many options to choose from in the market. How do you know which is the right one for your application? By the way for knowing the nature of your solution to be filtered, The first thing you should pick up is the right membrane material,
If the membrane filter is being used as a vent for a gas stream, the membrane made of Hydrophobic PTFE and Polyester (PETE) is the choice; if you want to collect air particles on the membrane surface, PTFE, Silver, PP, and glass fiber is perfect. To the liquid solution, if you are interested in particles retained on the membrane surface, Polycarbonate (PCTE) and PETE will be easy for surface retrieval and microscopy. When the filtered fluid is what you need, MCE and Nylon are perfect protein-binding capacity for sterilization, and Cellulose Acetate, PES, PP, and PVDF have good flow rates as well.
Performance Characteristics of HAWACH Filter Membranes
HAWACH filter membranes are strong with the burst (longitudinal) and tensile (lateral) strength is monitored during the process of production. To produce the high-quality filter membranes, we guarantee to use the high purity reagents and raw materials all the time and handle HAWACH filter membranes in a high graded cleanroom to minimize ambient contamination.
HAWACH filter membranes are the thin membranes with high porosity which provides high surface area for adsorption and binding. With the perfect thermostability, all of HAWACH membranes can be sterilized by autoclaving. Depending on the different membrane polymer, the operating temperature can be up to 180°C with minimal shrinkage.
The Procedures In Where We Use The Membrane Filters
Membrane filtration is a process that can separate the suspended particulate matter from the soluble and fluid components by the pressure forcing water or any kind of carrier fluid through a porous membrane. Having specific ratings of the pore sizes, membrane filters can keep the particles that are bigger than the size of the pores through the process of surface capture, as well as the particles which are smaller than the pore size of the membrane filter, can be kept by other types of mechanisms.
Membrane filters are useful tools for different purposes, so before you select the membrane filter for the applications, it’s important to know the types of procedures you are going to have, such as cross-flow filtration, ultrafiltration, microfiltration, nanofiltration, and reverse osmosis.
The procedure of cross-flow filtration is widely used for murky liquids such as wine, juice, in the food industry. It can be used in dialysis too. With the filter surface’s material of stainless steel, textile fabric, or plastic, The microfiltration is used in biotechnology applications, such as separating water-oil emulsions and separating colloidal hydroxides.
By using low pressures and membrane filters with bigger-sized pores, nanofiltration a be used in treatments performed for drinking water such as eliminating heavy metals and softening water. And the procedure of ultrafiltration is widely used only for protein separation and the cold sterilization in the pharmaceutical industry, but also for wastewater cleaning and metal recovering in the field of metallurgy.
Being the pressure-driven process, reverse osmosis is used to treat process, drinking, and aquarium water. We can also find them in where producing juice concentrates and treating wastewater.