• Hydrophilic ZSM-5 zeolite membranes exhibit excellent stability and dehydration performance for concentrating and dehydrating H2SO4 solutions, even at high concentrations (6 M) and temperatures (90 °C).
• The membranes achieve near-complete rejection of inorganic salts (natrium, iron, magnesium) in acid/salt mixtures, demonstrating high desalination efficiency.
• Pervaporation with ZSM-5 membranes offers an energy-efficient and environmentally friendly alternative for treating acidic wastewater, addressing a critical industrial need.
• The membranes maintain neutral permeate pH even under harsh acidic conditions, confirming their acid resistance and potential for long-term industrial application.