Ghodrati, Faezeh, Hemmati, Azadeh, Faghihi, Morteza, Ashrafi, Ziba. (1403). Nitrate adsorption from synthetic aqueous solutions by Ca(OH)2 and clinoptilolite zeolite nano-particles. هنرهای کاربردی, 1(2), -. doi: 10.22075/jpetk.2024.25827.1006
Faezeh Ghodrati; Azadeh Hemmati; Morteza Faghihi; Ziba Ashrafi. "Nitrate adsorption from synthetic aqueous solutions by Ca(OH)2 and clinoptilolite zeolite nano-particles". هنرهای کاربردی, 1, 2, 1403, -. doi: 10.22075/jpetk.2024.25827.1006
Ghodrati, Faezeh, Hemmati, Azadeh, Faghihi, Morteza, Ashrafi, Ziba. (1403). 'Nitrate adsorption from synthetic aqueous solutions by Ca(OH)2 and clinoptilolite zeolite nano-particles', هنرهای کاربردی, 1(2), pp. -. doi: 10.22075/jpetk.2024.25827.1006
Ghodrati, Faezeh, Hemmati, Azadeh, Faghihi, Morteza, Ashrafi, Ziba. Nitrate adsorption from synthetic aqueous solutions by Ca(OH)2 and clinoptilolite zeolite nano-particles. هنرهای کاربردی, 1403; 1(2): -. doi: 10.22075/jpetk.2024.25827.1006

Nitrate adsorption from synthetic aqueous solutions by Ca(OH)2 and clinoptilolite zeolite nano-particles

Sustainable Energy & Chemical Engineering
دوره 1، شماره 2، تابستان 2025    اصل مقاله (4.49 M)
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.22075/jpetk.2024.25827.1006
نویسندگان
Faezeh Ghodrati1؛ Azadeh Hemmati* 2؛ Morteza Faghihi3؛ Ziba Ashrafi4
1MIHAN Industrial Group, Tehran, Iran.
2Semnan University, Semnan University
3Chemistry & Process Engineering Department, Niroo Research Institute, Tehran, Iran
4Mohaghegh Ardebili University, Ardebil, Iran
چکیده
In this research article, the authors utilized a ball mill to grind Clinoptilolite zeolite 98% and Ca(OH)2 nanoparticles, and subsequently characterized the resulting adsorbents using SEM, TEM, XRD, and FTIR analyses. To optimize the adsorption process, they employed the Box-Behnken Design (BBD) of Response Surface Methodology (RSM) to evaluate the impact of various parameters, including pH (ranging from 5 to 9), adsorbent amount (ranging from 0.5 to 2 g), and temperature (ranging from 25 to 45 °C). The authors determined that the optimal temperature for nitrate adsorption was 45°C at a pH of 5, using 2g of adsorbent. Applying the pseudo-second-order dynamic model for investigation, the optimal retention time was determined to be 15 min. The maximum amounts of nitrate removed by Ca(OH)2 and zeolite were found to be 60.34% and 58.04%, respectively, with the the absorption equilibrium equation fitting well to the Langmuir model. Under optimal conditions, a mixture of Ca(OH)2 and zeolite (at a ratio of 1:3) removed a maximum of 56.70% of nitrates. These findings demonstrate the significant potential of natural zeolite and Ca(OH)2 for nitrate adsorption.

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کلیدواژه‌ها
Adsorption؛ nitrate؛ Ca(OH)2؛ zeolite؛ nano-particles
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