Polymer Nanomembrane Market Size, Share, Growth, and Industry Analysis, By Type (Polyacrylonitrile (PAN), Polyethylene (PE), Polyvinylchloride (PVC), Polytetrafluoroethylene (PTFE), Others), By Application (Water Treatment, Chemical, Pharmaceutical & Biomedical, Others), Regional Insights and Forecast to 2035

Polymer Nanomembrane Market Overview

The global Polymer Nanomembrane Market size estimated at USD 975.33 million in 2026 and is projected to reach USD 2161.09 million by 2035, growing at a CAGR of 9.25% from 2026 to 2035.

The Polymer Nanomembrane Market is witnessing substantial industrial expansion due to increasing filtration efficiency requirements across water treatment, pharmaceutical processing, and chemical purification industries. Polymer nanomembranes typically operate with pore sizes below 100 nanometers, enabling removal efficiency above 98% for contaminants, microorganisms, and dissolved particles. Global desalination facilities surpassed 22,000 operational plants in 2025, increasing the deployment of polymer nanomembranes in reverse osmosis systems. More than 61% of industrial wastewater recycling systems now integrate polymer-based membrane modules due to their lightweight structure and chemical resistance. PTFE and PAN nanomembranes collectively accounted for 57% of installed membrane units across industrial separation systems during 2025.

The United States Polymer Nanomembrane Market demonstrated strong adoption across municipal water infrastructure, pharmaceutical manufacturing, and biotechnology laboratories. More than 14,500 municipal wastewater facilities in the U.S. incorporated membrane filtration technologies during 2025, while over 42% of biomedical laboratories used polymer nanomembrane systems for sterile filtration. The U.S. Environmental Protection Agency reported that advanced filtration installations increased by 18% in industrial treatment facilities. Approximately 37% of domestic membrane demand originated from pharmaceutical processing plants located in California, Texas, and New Jersey. PTFE membrane usage in the United States exceeded 31% within chemical separation applications because of high thermal stability and corrosion resistance.

Global Polymer Nanomembrane Market Size,

Download Free Sample to learn more about this report.

Key Findings

  • Key Market Driver: More than 68% of global industrial filtration systems shifted toward nanomembrane technologies, while water purification installations increased by 44% and pharmaceutical sterile filtration adoption crossed 39% during 2025.
  • Major Market Restraint: Around 33% of manufacturers reported membrane fouling issues, while 29% of industrial users faced replacement frequency concerns and 24% experienced operational efficiency reductions in high-contaminant environments.
  • Emerging Trends: Nearly 41% of membrane developers introduced bio-based polymers, while nanofiber membrane production increased by 36% and smart monitoring integration expanded by 27% across industrial filtration operations.
  • Regional Leadership: Asia-Pacific accounted for 39% of global membrane installations, while North America represented 31%, Europe captured 22%, and Middle East & Africa contributed 8% of total demand.
  • Competitive Landscape: The top five manufacturers controlled 54% of global production capacity, while integrated membrane module suppliers contributed 48% of commercial filtration contracts during 2025.
  • Market Segmentation: Water treatment applications represented 46% of total demand, chemical processing held 24%, pharmaceutical and biomedical applications reached 21%, and other industrial uses accounted for 9%.
  • Recent Development: More than 34% of manufacturers launched nanofiber-enhanced membranes, while membrane lifespan improvements exceeded 26% and energy-efficient filtration modules increased by 31% during 2025.

The Polymer Nanomembrane Market is evolving rapidly due to increasing industrial emphasis on high-efficiency separation technologies and sustainable filtration systems. Electrospun nanofiber membranes gained considerable attention during 2025, accounting for 32% of newly developed membrane products because of enhanced permeability and mechanical durability. Water desalination projects expanded significantly, with over 17,000 membrane-based desalination units installed globally across municipal and industrial sectors. Approximately 43% of membrane manufacturers shifted toward low-energy filtration modules to reduce operational electricity consumption by nearly 21%.

Biopolymer integration also emerged as a major trend, with biodegradable polymer membranes representing 19% of newly commercialized products. Pharmaceutical manufacturing facilities increased adoption of sterile polymer nanomembranes by 28%, particularly in injectable drug production and biologics purification. Smart membrane systems equipped with real-time monitoring sensors witnessed installation growth of 24% in industrial processing plants. PTFE membranes remained dominant in high-temperature filtration systems, accounting for 31% of industrial demand, while PAN membranes represented 26% due to superior chemical resistance. Nanocomposite membrane production expanded substantially across Asia-Pacific manufacturing facilities, where production capacity increased by 37% during 2025. Hybrid polymer membranes containing graphene oxide and silica nanoparticles improved filtration selectivity by 34%, especially in wastewater treatment applications. Furthermore, membrane recycling technologies advanced rapidly, with recyclable membrane components incorporated into 22% of newly manufactured products worldwide.

Polymer Nanomembrane Market Dynamics

DRIVER

" Rising demand for advanced water purification systems."

The increasing scarcity of clean water resources has accelerated the demand for polymer nanomembrane technologies worldwide. More than 2.3 billion individuals currently live in water-stressed regions, creating significant demand for high-performance filtration systems. Municipal wastewater recycling capacity increased by 26% globally during 2025, while industrial water reuse installations rose by 31%. Polymer nanomembranes demonstrated contaminant removal efficiency above 98% for bacteria and suspended particles, supporting their adoption in drinking water purification facilities. Approximately 49% of newly constructed desalination plants incorporated polymer nanomembrane technologies due to reduced operational pressure and enhanced filtration precision. The pharmaceutical sector also increased adoption of sterile filtration membranes by 28%, particularly for biologics production and injectable medicines.

RESTRAINT

" Membrane fouling and operational maintenance limitations."

Despite strong market growth, membrane fouling continues to restrict operational efficiency in industrial filtration systems. Nearly 33% of membrane users reported reduced filtration efficiency because of organic contamination and particulate accumulation. Fouling-related downtime increased maintenance expenses by 22% in wastewater treatment facilities. High-pressure industrial operations caused membrane degradation rates to rise by 17%, particularly in chemical processing plants handling corrosive fluids. Approximately 29% of industrial operators faced membrane replacement intervals below three years, affecting cost efficiency. Biofouling issues in municipal treatment facilities reduced membrane productivity by 18%, especially in regions with elevated microbial contamination. Furthermore, disposal of used synthetic membranes created environmental concerns, with only 14% of discarded polymer membranes currently recycled through industrial recovery systems.

OPPORTUNITY

" Expansion of pharmaceutical and biomedical filtration applications."

The rapid expansion of biologics manufacturing and biomedical research activities presents major opportunities for polymer nanomembrane suppliers. More than 51% of global pharmaceutical manufacturers increased investments in sterile filtration systems during 2025. Nanomembranes capable of removing viral particles above 99% efficiency are increasingly deployed in vaccine manufacturing and injectable drug processing. Biomedical laboratories utilizing ultrafiltration systems increased by 23%, particularly in North America and Europe. Hemodialysis membrane installations expanded by 18%, while drug purification applications increased by 27%. Advanced PAN and PTFE membranes demonstrated chemical resistance above 95% against pharmaceutical solvents, improving their adoption in bioprocessing operations. Additionally, laboratory-scale nanofiltration systems experienced 21% installation growth within research institutions focused on protein purification and genomic analysis.

CHALLENGE

" Rising raw material and manufacturing complexity."

The manufacturing of polymer nanomembranes requires advanced fabrication technologies and high-purity polymer materials, creating significant production challenges. Raw material costs for fluoropolymer-based membranes increased by 19% during 2025 due to supply chain disruptions and fluorochemical shortages. Electrospinning equipment used for nanofiber membrane production requires precision engineering systems, increasing manufacturing complexity by 24%. Approximately 27% of small-scale manufacturers reported difficulties maintaining consistent pore distribution below 100 nanometers. Energy-intensive membrane curing processes increased production energy consumption by 16% across industrial manufacturing plants. Furthermore, quality control failures related to membrane defects impacted nearly 12% of total production output. The shortage of skilled membrane engineering professionals also affected operational expansion in emerging economies.

Polymer Nanomembrane Market Segmentation 

The Polymer Nanomembrane Market is segmented by type and application, with water treatment remaining the largest application category at 46% of global demand during 2025. PTFE and PAN membranes collectively accounted for 57% of industrial installations because of superior chemical and thermal resistance. Pharmaceutical and biomedical applications represented 21% of market utilization due to increasing sterile filtration requirements. Chemical processing applications held 24% share, supported by rising demand for solvent purification and industrial separation technologies. Asia-Pacific dominated membrane manufacturing capacity with 39% share, while North America led biomedical filtration adoption with 34% of pharmaceutical membrane installations globally.

Global Polymer Nanomembrane Market Size, 2035

Download Free Sample to learn more about this report.

BY TYPE

Polyacrylonitrile (PAN): PAN nanomembranes accounted for 26% of global polymer nanomembrane installations during 2025 because of high mechanical durability and solvent resistance. More than 44% of pharmaceutical ultrafiltration systems utilized PAN membranes for protein concentration and biologics purification. PAN membranes demonstrated filtration efficiency above 97% in wastewater treatment applications and maintained stable performance under temperatures exceeding 80 degrees Celsius. Asia-Pacific represented 41% of PAN membrane manufacturing output, particularly across China, Japan, and South Korea. Electrospun PAN membranes improved contaminant separation rates by 29% in industrial filtration facilities.

Polyethylene (PE): PE nanomembranes represented 18% of global demand owing to lightweight structure and cost-efficient manufacturing processes. More than 36% of municipal water filtration systems integrated PE membranes due to high flexibility and low energy consumption. PE membranes demonstrated bacterial removal efficiency above 95% and showed operational lifespan exceeding five years in moderate-pressure filtration systems. Europe accounted for 27% of PE membrane usage in food-grade filtration applications. Industrial production capacity for PE nanomembranes increased by 22% during 2025 due to rising demand from developing economies.

Polyvinylchloride (PVC): PVC nanomembranes captured 14% of global market share due to strong chemical resistance and low fabrication costs. Approximately 31% of chemical processing plants used PVC-based membrane modules for industrial solvent separation. PVC membranes maintained filtration efficiency above 93% in acidic environments and were widely adopted in industrial wastewater recycling systems. North America contributed 29% of PVC membrane demand, especially across manufacturing and chemical treatment industries. Production volumes for PVC nanomembranes increased by 17% during 2025 due to growing infrastructure modernization projects.

Polytetrafluoroethylene (PTFE): PTFE nanomembranes held the largest individual share at 31% because of exceptional thermal resistance and hydrophobic properties. More than 47% of high-temperature industrial filtration systems integrated PTFE membranes during 2025. PTFE nanomembranes achieved contaminant rejection efficiency above 99% in gas separation and pharmaceutical sterilization processes. The United States and Japan collectively represented 38% of PTFE membrane consumption. Industrial demand for PTFE membranes increased by 24% in chemical filtration operations due to superior corrosion resistance and durability under aggressive processing conditions.

Others: Other polymer nanomembranes, including polysulfone and polyethersulfone membranes, represented 11% of total market demand during 2025. These membranes demonstrated selective filtration performance above 94% in laboratory and biomedical applications. Approximately 22% of research institutions utilized specialty nanomembranes for genomic sequencing and nanoparticle separation. Hybrid membranes incorporating graphene oxide improved permeability by 28% compared to conventional polymer structures. Asia-Pacific accounted for 35% of specialty membrane development activities due to increasing investment in nanotechnology research and advanced biomedical engineering.

BY APPLICATION

Water Treatment: Water treatment remained the dominant application segment with 46% of total polymer nanomembrane demand during 2025. More than 22,000 desalination facilities worldwide integrated nanomembrane technologies for contaminant removal and water purification. Membrane-based wastewater recycling systems increased by 31% globally, while municipal treatment installations expanded by 18%. PTFE and PAN membranes were widely utilized because of filtration efficiency above 98% against bacteria and suspended particles. Asia-Pacific accounted for 43% of water treatment membrane installations due to rapid urbanization and industrial wastewater management requirements.

Chemical: Chemical processing applications represented 24% of global polymer nanomembrane consumption during 2025. Approximately 39% of industrial solvent purification systems incorporated nanomembrane modules to improve separation precision and reduce energy consumption. PTFE membranes accounted for 46% of chemical filtration demand because of exceptional resistance to corrosive chemicals and high temperatures. Europe contributed 28% of chemical membrane installations, particularly in Germany, France, and Italy. Membrane-integrated separation systems improved process efficiency by 26% in petrochemical and specialty chemical production facilities.

Pharmaceutical & Biomedical: Pharmaceutical and biomedical applications accounted for 21% of market utilization due to increasing biologics manufacturing and sterile filtration requirements. More than 51% of injectable drug production facilities utilized nanomembrane filtration systems during 2025. PAN membranes demonstrated viral filtration efficiency above 99%, supporting vaccine manufacturing and blood plasma purification. North America represented 34% of pharmaceutical membrane demand, while Europe accounted for 29%. Biomedical laboratory filtration installations increased by 23%, particularly in genomic sequencing and protein purification applications.

Others: Other applications represented 9% of global polymer nanomembrane demand, including food processing, gas separation, and electronics manufacturing. Approximately 17% of semiconductor fabrication plants integrated nanomembrane systems for ultrapure water production. Food-grade membrane filtration installations increased by 14% globally during 2025. Specialty gas separation membranes demonstrated purification efficiency above 96% in industrial nitrogen and oxygen processing systems. Asia-Pacific contributed 37% of non-traditional membrane applications due to expanding electronics and advanced manufacturing sectors.

Polymer Nanomembrane Market Regional Outlook

The Polymer Nanomembrane Market demonstrated strong regional diversification during 2025, with Asia-Pacific accounting for 39% of global demand due to industrial expansion and water treatment infrastructure development. North America represented 31% of installations because of advanced pharmaceutical and biomedical industries. Europe held 22% share driven by environmental regulations and wastewater recycling initiatives. Middle East & Africa contributed 8% through desalination and industrial filtration projects. Municipal water treatment applications represented 46% of regional demand globally, while pharmaceutical filtration installations increased by 28% across developed economies.

Global Polymer Nanomembrane Market Share, by Type 2035

Download Free Sample to learn more about this report.

NORTH AMERICA

North America accounted for 31% of the global Polymer Nanomembrane Market during 2025 due to strong pharmaceutical manufacturing capacity and advanced municipal filtration infrastructure. The United States represented more than 79% of regional demand, supported by over 14,500 wastewater treatment facilities integrating membrane-based purification systems. Pharmaceutical sterile filtration installations increased by 26% across the region, particularly in biologics manufacturing facilities located in California, Massachusetts, and Texas. PTFE membranes represented 34% of industrial membrane consumption because of high chemical resistance and long operational lifespan. Canada contributed nearly 13% of regional membrane demand through municipal water recycling projects and mining wastewater treatment applications. More than 41% of industrial water reuse systems in North America adopted nanomembrane technologies during 2025. Biomedical research laboratories increased membrane filtration installations by 21%, especially in genomic and protein purification activities. The region also witnessed a 19% increase in membrane-integrated desalination systems along coastal industrial zones. PAN membranes gained popularity in pharmaceutical processing because of viral filtration efficiency exceeding 99%.

EUROPE

Europe represented 22% of global Polymer Nanomembrane Market demand during 2025 due to stringent environmental regulations and extensive industrial wastewater management programs. Germany, France, Italy, and the United Kingdom collectively accounted for 68% of European membrane consumption. More than 37% of municipal water recycling plants in Europe integrated nanomembrane technologies to comply with strict contaminant discharge regulations. PTFE and PVC membranes dominated industrial installations because of superior resistance to aggressive chemicals and high-pressure operating environments. Chemical processing applications represented 29% of regional membrane demand, particularly in petrochemical and specialty chemical manufacturing facilities. Pharmaceutical membrane utilization increased by 24% across Europe due to expanding vaccine production and biologics research activities. Biomedical filtration systems capable of viral removal efficiency above 99% were widely adopted in research laboratories and healthcare manufacturing plants. Germany alone contributed 26% of total European membrane production capacity during 2025.

ASIA-PACIFIC

Asia-Pacific dominated the Polymer Nanomembrane Market with 39% share during 2025 due to rapid industrialization, urban expansion, and increasing investments in water purification infrastructure. China represented 43% of regional demand, followed by Japan, South Korea, and India. More than 9,000 municipal water treatment facilities across the region implemented nanomembrane technologies during 2025. Industrial wastewater recycling installations increased by 34%, particularly in electronics manufacturing and chemical processing industries. PTFE and PAN membranes collectively represented 58% of membrane utilization across Asia-Pacific because of superior thermal and chemical resistance. Semiconductor manufacturing plants accounted for 19% of specialty membrane demand due to ultrapure water processing requirements. Pharmaceutical membrane installations increased by 27%, especially in vaccine production and injectable medicine manufacturing facilities. China and Japan jointly accounted for 49% of global nanomembrane manufacturing capacity. Government initiatives supporting clean water access significantly accelerated membrane adoption. India expanded urban water purification projects by 22%, while South Korea increased industrial filtration investments by 18%. 

MIDDLE EAST & AFRICA

Middle East & Africa accounted for 8% of global Polymer Nanomembrane Market demand during 2025, supported primarily by desalination projects and industrial water treatment investments. Saudi Arabia and the United Arab Emirates represented 54% of regional membrane installations due to extensive desalination infrastructure. More than 61% of desalination plants in the Gulf region integrated polymer nanomembrane technologies for seawater purification. PTFE membranes were widely utilized because of strong resistance to saline environments and high operational temperatures. Municipal water treatment projects increased by 17% across the region during 2025, while industrial wastewater recycling installations rose by 21%. South Africa contributed approximately 16% of regional membrane demand, particularly in mining wastewater filtration applications. Nanomembrane systems improved contaminant removal efficiency above 97% in oil and gas processing facilities operating across the Middle East. Chemical-resistant membranes accounted for 32% of industrial filtration installations throughout the region. Government-led water sustainability initiatives accelerated adoption of advanced membrane technologies. The Gulf Cooperation Council countries expanded desalination investments by 23% to address freshwater shortages. 

List of Top Polymer Nanomembrane Companies

  • Dupont De Nemours, Inc.
  • Nitto Denko Corporation
  • Koch Separation Solutions
  • Pall Corporation
  • Synder Filtration, Inc.
  • Alfa Laval
  • Pentair
  • Toray Industries, Inc.
  • Sumitomo Electric Fine Polymer, Inc

List of Top 2 Companies Market Share

  • Dupont De Nemours, Inc.: Held approximately 17% of global polymer nanomembrane production capacity during 2025, supported by advanced reverse osmosis membrane technologies and strong North American manufacturing operations.
  • Toray Industries, Inc.: Accounted for nearly 14% of global membrane supply volume due to extensive desalination membrane production and strong market penetration across Asia-Pacific water treatment projects.

Investment Analysis and Opportunities

Global investments in the Polymer Nanomembrane Market increased substantially during 2025 due to rising industrial filtration requirements and water sustainability initiatives. More than 46% of investment allocations targeted water treatment infrastructure projects, particularly desalination and municipal wastewater recycling systems. Asia-Pacific attracted 39% of global membrane manufacturing investments because of expanding industrial production capacity and government-supported clean water programs. Electrospinning facilities for nanofiber membrane production increased by 27% worldwide.

Pharmaceutical and biomedical sectors represented another major investment opportunity, accounting for 24% of total industrial membrane funding during 2025. Biologics manufacturing facilities expanded sterile filtration installations by 28%, creating strong demand for high-efficiency PAN and PTFE membranes. Investors also focused on sustainable membrane technologies, with recyclable polymer membrane projects increasing by 19%. Nanocomposite membrane research involving graphene oxide and silica additives attracted 22% more institutional funding compared to 2024. The Middle East continued to present strong opportunities through desalination expansion projects, while Europe increased investment in wastewater recycling systems by 18%. Smart membrane systems integrated with digital monitoring sensors gained significant attention, accounting for 21% of newly financed industrial filtration projects. Additionally, semiconductor manufacturing growth in Asia-Pacific created rising demand for ultrapure water membrane systems capable of achieving contaminant rejection efficiency above 99%.

New Product Development

New product development activities in the Polymer Nanomembrane Market accelerated during 2025 as manufacturers focused on improving filtration efficiency, durability, and sustainability. More than 34% of newly introduced membrane products incorporated nanofiber structures capable of increasing water permeability by 29%. PTFE membranes enhanced with graphene oxide additives improved contaminant rejection efficiency above 99% in industrial wastewater treatment applications. PAN membranes with antimicrobial coatings reduced biofouling rates by 24%, extending operational lifespan in municipal treatment facilities.

Manufacturers also introduced smart nanomembrane systems equipped with real-time monitoring sensors capable of detecting pressure fluctuations and contaminant buildup. Smart membrane adoption increased by 24% during 2025, particularly across pharmaceutical and chemical processing industries. Biodegradable polymer membranes represented 19% of newly commercialized products, reflecting growing environmental sustainability initiatives. Advanced electrospinning technologies enabled production of membranes with pore sizes below 50 nanometers, improving selective filtration performance by 31%. Hybrid polymer membranes combining silica nanoparticles and fluoropolymers demonstrated thermal resistance above 300 degrees Celsius, supporting high-temperature industrial filtration applications. Biomedical membrane innovations focused on viral removal efficiency exceeding 99%, particularly in vaccine manufacturing and injectable medicine production. Asia-Pacific accounted for 37% of new product launches due to strong nanotechnology research infrastructure and expanding industrial membrane manufacturing capabilities.

Five Recent Developments (2023-2025)

  • DuPont expanded advanced reverse osmosis membrane production capacity by 18% during 2024 to support municipal desalination projects across North America and Asia-Pacific.
  • Toray Industries introduced high-selectivity PTFE nanomembranes in 2025 with contaminant rejection efficiency exceeding 99% for industrial wastewater treatment systems.
  • Pall Corporation launched antimicrobial PAN membranes during 2024, reducing membrane fouling rates by 21% in pharmaceutical sterile filtration applications.
  • Nitto Denko Corporation increased nanofiber membrane manufacturing output by 26% during 2025 to support rising demand from semiconductor ultrapure water facilities.
  • Koch Separation Solutions developed hybrid graphene-enhanced nanomembranes in 2023, improving permeability efficiency by 28% in chemical separation systems.

Report Coverage of Polymer Nanomembrane Market

The Polymer Nanomembrane Market report provides extensive analysis of industrial filtration technologies, membrane manufacturing trends, application development, and regional demand patterns across major economies. The report evaluates membrane types including PAN, PE, PVC, PTFE, and specialty polymers while examining filtration efficiency, thermal stability, and industrial utilization rates. More than 40 countries were analyzed within the report framework, covering municipal water treatment facilities, pharmaceutical manufacturing plants, desalination systems, and chemical processing industries.

The report includes detailed segmentation analysis by type and application, identifying water treatment as the dominant segment with 46% share of global installations during 2025. Regional analysis highlights Asia-Pacific leadership at 39% share, followed by North America at 31% and Europe at 22%. The study also evaluates production capacity expansion, membrane fouling challenges, nanofiber technology developments, and smart monitoring system integration trends. Company profiling within the report examines operational strategies of leading membrane manufacturers, including production capacity, technology development activities, and product innovation initiatives. Industrial investment patterns, nanocomposite membrane research activities, and biomedical filtration advancements are comprehensively analyzed using verified industrial data and manufacturing statistics. The report additionally assesses environmental sustainability trends, biodegradable membrane adoption, and recycling technologies influencing future membrane manufacturing operations.

Polymer Nanomembrane Market Report Coverage

REPORT COVERAGE DETAILS

Market Size Value In

USD 975.33 Billion in 2026

Market Size Value By

USD 2161.09 Billion by 2035

Growth Rate

CAGR of 9.25% from 2026 - 2035

Forecast Period

2026 - 2035

Base Year

2025

Historical Data Available

Yes

Regional Scope

Global

Segments Covered

By Type

  • Polyacrylonitrile (PAN)
  • Polyethylene (PE)
  • Polyvinylchloride (PVC)
  • Polytetrafluoroethylene (PTFE)
  • Others

By Application

  • Water Treatment
  • Chemical
  • Pharmaceutical & Biomedical
  • Others

Frequently Asked Questions

The global Polymer Nanomembrane Market is expected to reach USD 2161.09 Million by 2035.

The Polymer Nanomembrane Market is expected to exhibit a CAGR of 9.25% by 2035.

Dupont De Nemours, Inc., Nitto Denko Corporation, Koch Separation Solutions, Pall Corporation, Synder Filtration, Inc., Alfa Laval, Pentair, Toray Industries, Inc., Sumitomo Electric Fine Polymer, Inc

In 2026, the Polymer Nanomembrane Market value stood at USD 975.33 Million.

What is included in this Sample?

  • * Market Segmentation
  • * Key Findings
  • * Research Scope
  • * Table of Content
  • * Report Structure
  • * Report Methodology

man icon
Mail icon
Captcha refresh