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Views: 800 Author: Site Editor Publish Time: 2025-10-28 Origin: Site
Water Treatment: Widely used in reverse osmosis (RO) and nanofiltration (NF) for drinking water purification. CA RO membranes effectively remove salts, heavy metals, and organic contaminants from groundwater or surface water, making them suitable for small-scale water treatment plants and household water purifiers.
Food Industry: Applied in the concentration of fruit juices (e.g., orange juice, apple juice) and dairy products. Their hydrophilic nature minimizes adsorption of organic substances, ensuring the original flavor of food is preserved while reducing energy consumption compared to traditional thermal concentration methods.
Biotechnology: Used in the separation and purification of biological macromolecules (e.g., proteins, enzymes) due to their biocompatibility, which avoids denaturation of active biological substances during the separation process.
Wastewater Treatment: Dominant in ultrafiltration (UF) and microfiltration (MF) for industrial wastewater recycling. For example, in textile wastewater treatment, PSF UF membranes separate dyes and suspended solids from water, enabling reuse of treated water in production processes and reducing environmental pollution.
Medical Field: Used in hemodialysis devices. PSF membranes allow the passage of small-molecule toxins (e.g., urea, creatinine) while retaining beneficial macromolecules (e.g., proteins, blood cells), ensuring efficient detoxification during dialysis and good biocompatibility to avoid adverse reactions in patients.
Electronics Industry: Applied in the purification of ultrapure water for semiconductor manufacturing. PSF MF membranes remove tiny particles and microorganisms from water, meeting the strict purity requirements (up to 18 MΩ·cm) for water used in chip production.
Environmental Protection: Used in membrane bioreactors (MBRs) for municipal sewage treatment. PVDF MBR membranes combine biological degradation with membrane separation, efficiently removing organic matter and nitrogen/phosphorus from sewage, and producing high-quality effluent that meets reuse standards. Their anti-fouling and chemical resistance ensure long-term stable operation in complex sewage environments.
Chemical Industry: Applied in solvent recovery and gas separation. For instance, in the pharmaceutical industry, PVDF nanofiltration membranes separate and recover organic solvents (e.g., ethanol, methanol) from reaction mixtures, reducing solvent waste and production costs. In gas separation, they selectively separate carbon dioxide (CO₂) from natural gas, improving the purity of natural gas.
Energy Sector: Used in proton exchange membranes (PEMs) for fuel cells. Modified hydrophilic PVDF membranes have good proton conductivity, enabling efficient transfer of protons between electrodes while resisting corrosion from fuel cell electrolytes, thus enhancing the performance and lifespan of fuel cells.
High-Temperature Process Separation: Used in the petrochemical industry for high-temperature oil-water separation. For example, in the processing of heavy oil, ceramic microfiltration membranes separate water and impurities from high-temperature (above 200°C) oil streams, improving the quality of oil products and reducing equipment wear.
Pharmaceutical and Food Sterilization: Applied in the sterilization of heat-sensitive pharmaceuticals (e.g., antibiotics) and beverages (e.g., beer, wine). Ceramic membranes remove microorganisms (e.g., bacteria, fungi) through physical filtration without using high temperatures or chemical disinfectants, preserving the efficacy and flavor of products.
Environmental Remediation: Used in the treatment of high-concentration organic wastewater (e.g., from chemical plants, landfills). Ceramic membranes withstand harsh chemical conditions and high temperatures, enabling efficient degradation and separation of toxic organic compounds, and facilitating the recycling of wastewater.
