شیمى کاربردى روز

شیمى کاربردى روز

بررسی حذف تولوئن از فاضلاب صنایع نساجی با استفاده از فرآیند تلفیقی فنتون و امواج فراصوت مبتنی بر اکسیداسیون پیشرفته

نوع مقاله : مقاله علمی پژوهشی

نویسندگان
1 گروه رزین‌ها و افزودنی‌ها، پژوهشگاه رنگ، تهران، ایران
2 گروه پژوهش‌های زیست‌محیطی، پژوهشگاه رنگ، تهران، ایران
چکیده
فاضلاب تولیدی نساجی حاوی حلال‌های خطرناکی مانند متیل ایزوبوتیل کتون، متانول، متیل اتیل کتون، زایلن و تولوئن است. این ترکیبات آلی فرار خطرناک، مانند تولوئن، خطرات قابل توجهی را برای سلامت انسان و اکوسیستم‌های آبی ایجاد می‌کنند. فرآیندهای اکسیداسیون پیشرفته (AOPs) به دلیل تولید رادیکال‌های هیدروکسیل بسیار واکنش‌پذیر، برای تجزیه آنها امیدوارکننده هستند. هدف از این مطالعه استفاده از AOP ترکیبی فنتون-اولتراسوند برای به حداکثر رساندن حذف تولوئن از پساب نساجی مصنوعی و واقعی بود. تأثیر غلظت H2O2 (50-200 میلی‌گرم در لیتر)، دوز Fe2+ (10-25 میلی‌گرم در لیتر)، غلظت اولیه تولوئن (10-70 میلی‌گرم در لیتر)، pH (3-7) و فرکانس اولتراسونیک (0 یا 35 کیلوهرتز) بر راندمان حذف بیش از 30 دقیقه در دمای 25 درجه سانتیگراد با استفاده از آزمایش‌های دسته‌ای ارزیابی شد. برای اندازه‌گیری مقادیر تولوئن از کروماتوگرافی گازی فضای فوقانی استفاده شد. 100 میلی‌گرم در لیتر H2O2، 10 میلی‌گرم در لیتر Fe2+، 10 میلی‌گرم در لیتر تولوئن و pH برابر با 3 شرایط ایده‌آل بودند. با ترکیب فنتون-اولتراسوند، بالاترین اثربخشی حذف 89.7 درصد بود، در حالی که این میزان برای فنتون به تنهایی 86.2 درصد و برای اولتراسوند به تنهایی 6 درصد بود. به دلیل تداخل آلاینده‌های همراه، از جمله زایلن و بنزن، 72.3 درصد حذف برای فاضلاب نساجی واقعی در این شرایط حاصل شد. برای حذف تولوئن در پساب‌های صنعتی، این روش یکپارچه کارایی و مقرون به صرفه بودن فوق‌العاده‌ای را نشان می‌دهد و گزینه‌ای مقیاس‌پذیر برای تصفیه فاضلاب پالایشگاه‌ها و نساجی‌ها ارائه می‌دهد.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Investigating the Removal of Toluene from Textile Industrial Wastewater Using Integrated Advanced Oxidation-Based Fenton and Ultrasound Process

نویسندگان English

Milad Abniki 1
Zahra Rahmani 1
Nargess Yousefi-Limaee 2
Behzad Shirkavand Hadavand 1
1 Department of Resins and Additives, Institute for Color Science and Technology, Tehran, Iran
2 Department of Environmental Research, Institute for Color Science and Technology, Tehran, Iran
چکیده English

The manufactured wastewater of textiles contains perilous solvents like methyl isobutyl ketone, methanol, methyl ethyl ketone, xylene, and toluene. These hazardous volatile organic compounds, like as toluene, pose significant risks to human health and aquatic ecosystems. Advanced oxidation processes (AOPs) are promising for their degradation due to the generation of highly reactive hydroxyl radicals. The purpose of this study was to use a combined Fenton-ultrasound AOP to maximize the removal of toluene from both synthetic and actual textile effluent. The impact of H2O2 concentration (50–200 mg/L), Fe2+ dose (10–25 mg/L), beginning toluene concentration (10–70 mg/L), pH (3–7), and ultrasonic frequency (0 or 35 kHz) on removal efficiency over 30 min at 25 °C was assessed using batch tests. Headspace-gas chromatography was used to measure the amounts of toluene.100 mg/L H2O2, 10 mg/L Fe²⁺, 10 mg/L toluene, and pH 3 were the ideal circumstances. With combined Fenton-ultrasound, the highest removal effectiveness was 89.7%, as opposed to 86.2% for Fenton alone and 6% for ultrasound alone. Due to interference from co-pollutants, including xylene and benzene, 72.3% clearance was attained for actual textile wastewater under these circumstances. For the remediation of toluene in industrial effluents, this integrated method exhibits exceptional efficiency and cost-effectiveness, providing a scalable option for the treatment of wastewater from refineries and textiles.

کلیدواژه‌ها English

Textile manufacturing wastewater
Advanced oxidation process
Ultrasound
organic pollutants
Fenton
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