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ارزیابی مقایسهای گوگردزدایی استخراجی از سوخت مایع با استفاده از حلالهای اوتکتیک عمیق حاوی تری اتانول آمین با نقش دوگانه دهنده پیوند هیدروژنی - گیرنده پیوند هیدروژنی | ||
| شیمى کاربردى روز | ||
| دوره 20، شماره 74، فروردین 1404، صفحه 281-296 اصل مقاله (813.26 K) | ||
| نوع مقاله: مقاله علمی پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22075/chem.2025.36942.2346 | ||
| نویسندگان | ||
| فریناز خالقی؛ محبوبه بهروزی* | ||
| گروه شیمی، دانشکده علوم، دانشگاه زنجان، زنجان، ایران | ||
| تاریخ دریافت: 01 اسفند 1403، تاریخ بازنگری: 15 اردیبهشت 1404، تاریخ پذیرش: 28 خرداد 1404 | ||
| چکیده | ||
| گوگرد موجود در سوخت، یکی از منابع اصلی آلایندهها است که مشکلات زیست-محیطی را به همراه دارد. بعلاوه، وجود ناخالصیهای گوگرد، منجر به بروز مشکلات خوردگی در واحدهای پالایشگاه و غیرفعال شدن کاتالیزور مورد استفاده در پالایشگاهها میشود؛ بنابراین گوگردزدایی از سوخت بسیار ضروری است. استفاده از فناوریهای سبز جهت حل این مشکل، مورد توجه بسیاری از محققان است. حلالهای اوتکتیک عمیق (DESs) به عنوان حلالهایی مشابه با مایعات یونی در نظر گرفته میشوند و به دلیل ویژگیهایی چون سازگاری با محیط زیست و قیمت بسیار پایین، توجه روزافزونی را در فرآیندهای جداسازی و استخراج به خود جلب کردهاند. در این مطالعه، حلال اوتکتیک عمیق با اختلاط تری اتانول آمین (TEOA) به عنوان دهنده پیوند هیدروژنی (HBD) وکولین کلراید (ChCl) به عنوان گیرنده پیوند هیدروژنی (HBA) تهیه شد. سپس این حلال اوتکتیک عمیق در گوگردزدایی استخراجی جهت حذف تیوفن (Th) مورد استفاده قرار گرفت. نتایج حاصل با زمانی که TEOA نقش HBA در DES را ایفا میکند، مورد مقایسه قرار گرفت و کارایی TEOA در هر دو نقش دهندگی و گیرندگی پیوند هیدروژنی در فرآیند گوگردزدایی ارزیابی شد. برای مدلسازی و بهینهسازی فرایند استخراج، از روش سطح پاسخ (RSM) استفاده شد. سه پارامتر عملیاتی موثر بر گوگردزدایی، نسبت اجزای حلال اوتکتیک عمیق (HBA:HBD)، محتوای اولیه گوگرد و نسبت جرمی حلال اوتکتیک عمیق به سوخت مدل (DES:MF)، انتخاب شدند. در شرایط عملیاتی بهینه برای دو حلال اوتکتیک عمیق، حداکثر راندمان استخراج در یک مرحله به ترتیب 3/70 و 8/71 درصد بود. | ||
| کلیدواژهها | ||
| گوگردزدایی استخراجی؛ حلالهای اوتکتیک عمیق؛ کولین کلرید؛ تری اتانول آمین؛ پلی اتیلن گلیکول | ||
| عنوان مقاله [English] | ||
| Comparative Evaluation of the Extractive Desulfurization of Liquid Fuel Using Deep Eutectic Solvents Containing Triethanolamine with Dual Role Hydrogen Bond Donor-Hydrogen Bond Acceptor | ||
| نویسندگان [English] | ||
| Farinaz Khaleghi؛ Mahboobe Behroozi | ||
| Department of Chemistry, Faculty of Sciences, University of Zanjan, Zanjan, Iran | ||
| چکیده [English] | ||
| Sulfur in fuel is one of the main sources of pollutants that cause environmental problems. In addition, the presence of sulfur impurities leads to corrosion problems in refinery units and deactivation of the catalyst used in refineries; therefore, desulfurization of fuel is very necessary. The use of green technologies to solve this problem is of interest to many researchers. Deep eutectic solvents (DES) are considered as solvents similar to ionic liquids and have attracted increasing attention in separation and extraction processes due to their features such as environmental compatibility and very low price. In this study, a deep eutectic solvent (DES) was prepared by mixing triethanolamine (TEOA) as the hydrogen bond donor (HBD) and choline chloride (ChCl) as the hydrogen bond acceptor (HBA). This DES was then used in extractive desulfurization to remove thiophene (Th). The results were compared with those obtained when TEOA acted as the HBA in the DES and the efficiency of TEOA in both HBD and HBA roles in desulfurization was evaluated. Response surface methodology (RSM) was used to model and optimize the extraction process. Three operating parameters affecting desulfurization, the DES component ratio (HBA: HBD), the initial sulfur content, and the mass ratio of DES to model fuel (DES:MF), were selected. Under optimal operating conditions for both DES, the maximum extraction efficiency in one stage was 70.3 and 71.8%, respectively. | ||
| کلیدواژهها [English] | ||
| Desulfurization, Deep eutectic solvents, Choline chloride, Triethanolamine, Polyethylene glycol | ||
| مراجع | ||
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