Survey the most efficient parameters for modifying Clinoptilolite's ion exchange process to uptake sulfate ions by the Design of Experiments method (DOE)

Zeolites are a diverse group of inorganic microporous crystalline minerals that are commonly used in adsorption processes due to their distinct characteristics. Natural zeolites, as opposed to synthetic zeolites, have gained popularity in many parts of the world due to their abundance, affordability, and ease of processing. On the other hand, the contamination of water resources by various organic and mineral chemicals such as nitrate, sulfate, and so on, as well as the ability of zeolitic adsorbents to remove these pollutants, have clearly demonstrated the necessity for research into zeolite modification methods. In this study, the modification of Clinoptilolite natural zeolite was examined utilizing a simple and inexpensive approach for sulfate removal, which is an efficient and cost-effective process with promising future industrial applications. We used an ion exchange technique to create an ecologically friendly adsorbent that also provided good treatment results. Furthermore, to improve zeolite efficiency, operating parameters such as temperature, time, and solution concentration were evaluated, and the effect of different parameters on absorption performance was studied and determined using the surface response method (RSM). The greatest adsorption efficiency of ۸۱.۷۹% was recorded at T = ۶۰ °C, t = ۳ hours, and C = ۰.۶ M. In addition, the modified clinoptilolite was characterized using XRD, FTIR, and EDS to assess the altered structure and performance.

کلیدواژه ها:

Clinoptilolite ، Water treatment ، Sulfate removal ، Ion exchange ، RSM method