Used extensively in water purification to remove cations such as calcium, magnesium, and heavy metals. Commonly applied in laboratory settings for demineralization and deionization of aqueous solutions. Employed in the separation and concentration of metal ions in analytical chemistry, including sample preparation for techniques such as AAS or ICP. Useful in the food and beverage industry for sugar syrup decolorization and purification. Applied in pharmaceutical processes for drug purification and recovery of active compounds. In organic synthesis, it serves as a solid acid catalyst for proton replacement reactions or to remove bases from systems. Also utilized in environmental remediation to treat wastewater by capturing harmful cations.