نشریه علمی فرآیند نو

نشریه علمی فرآیند نو

تاثیر شرایط مختلف بر سنتز جاذب کربنی از ضایعات تایر جهت حذف یون آرسنیک از محیط آبی

نوع مقاله : پژوهشی

نویسندگان
حسین محمدی 1
محمد جواد واعظی 2
رضا خوشبوی 3
1 دانشجوی کارشناسی ارشد، دانشکده مهندسی شیمی، دانشگاه صنعتی سهند، تبریز
2 استادیار، دانشکده مهندسی شیمی، دانشگاه صنعتی سهند، تبریز
3 استادیار، مرکز تحقیقات کربن سبز، دانشکده مهندسی شیمی، دانشگاه صنعتی سهند، تبریز
10.22034/farayandno.2024.2035131.1967
چکیده
در این پژوهش، جاذب­های کربنی از ضایعات تایر خودرو توسط فرایند کربن سازی خشک جهت حذف آلاینده غیرآلی یون آرسنیک از محیط آبی سنتز گردید. تاثیر متغیرهای مختلف در فرایند کربن­سازی همچون زمان ماند (0/5، 1، 2 و4 ساعت)، دمای فرایند (°C 400، 550، 700 و800) فشار داخل راکتور فرایند (0/6-، 0/3-، 1، 5 و10 بار) و اندازه ذرات، در بازده جرمی فرایند و ظرفیت جذب جاذب­ها بررسی شد. سپس برای تعیین سطح تخلخل و گروه‌های عاملی مشخصه­یابی جاذب­ها توسط FTIR، BET-BJH وXRD انجام گرفت. نتایج نشان‌دهنده تاثیر مثبت همه متغیرها به جز زمان ماند، درکسب نتیجه مطلوب می ­باشد. بهترین ظرفیت جذب (mg/g 3/3) برای حذف یون آرسنیک برای جاذب تهیه شده در شرایط مطلوب در زمان ماند h2، دمای °C700، فشار 0/3- بار و اندازه ذراتmm  3 حاصل شد. تاثیر غلظت اولیه آلاینده نشان میدهد که فرایند جذب از مدل فرندلیچ (R2>0.994) پیروی می‌کند.  نتایج نشان داد چار حاصل از ضایعات تایر می ­تواند جاذب کربنی نسبتا موثر برای پاکسازی آب آلوده به آرسنیک محسوب شود.
کلیدواژه‌ها
چار
مواد نانوساختار کربنی
حذف آرسنیک
کربن سازی خشک
ضایعات لاستیک

موضوعات

عنوان مقاله English

Effect of Synthesis Parameters on Tire Waste-Derived Carbon Adsorbents for Arsenic Removal from Aqueous Solution

نویسندگان English

Hussein Mahmodi 1
Mohammad Javad Vaezi 2
Reza Khoshbouy 3
1 Master Student, Faculty of Chemical Engineering, Sahand University of Technology, Tabriz, Iran
2 Assistant Professor, Faculty of Chemical Engineering, Sahand University of Technology, Tabriz, Iran
3 Assistant Professor, Faculty of Chemical Engineering, Sahand University of Technology, Tabriz, Iran
چکیده English

In this study, carbon adsorbents were synthesized from tire waste using a dry carbonization process to remove inorganic arsenic ions from aqueous environments. The influence of various carbonization process parameters such as holding time (0.5 to 4 hours), process temperature (400 to 850°C), reactor pressure (-0.6 to 10 bar), and particle size on the mass yield and adsorption capacity of the adsorbents was investigated. Subsequently, the porosity and functional groups of the adsorbents were characterized using FTIR, BET-BJH, and XRD techniques. The results indicated that all variables positively impacted the achievement of optimal conditions. The highest adsorption capacity for arsenic ion removal was obtained under the optimal conditions of a 2-hour holding time, a temperature of 700°C, a pressure of -0.3 bar, and a particle size of 3 mm. The findings showed that the char derived from tire waste could serve as a relatively cost-effective adsorbent for the remediation of arsenic-contaminated water.

کلیدواژه‌ها English

Char
Carbon Nanostructured Materials
Arsenic Removal
Dry Carbonization
Tire Waste
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