کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7702990 | 1496862 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Peat moss-derived biochar for sonocatalytic applications
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Peat-moss derived biochar was used as a sonocatalyst for the degradation of rhodamine B (RhB) at different ultrasonic frequencies (40â¯kHz and 300â¯kHz). The biochar was prepared by pyrolysis of peat-moss at 300â¯Â°C under N2-saturated conditions. High removal efficiency was achieved when biochar (1000â¯mgâ¯Lâ1) was used as a sonocatalyst in the 40â¯kHz system, and high removal could be achieved by pre-adsorption and radical oxidation reactions on the surface of the biochar. This was validated in experiments employing radical scavengers. Sonochemiluminescence images and real images of the systems with no biochar, 100â¯mgâ¯Lâ1 biochar, and 1000â¯mgâ¯Lâ1 biochar also supported this observation. On the other hand, the addition of the biochar was less effective than expected for the degradation of RhB at 300â¯kHz. This was due to low dispersion of the biochar in solution in the high frequency system, where relatively weaker sonophysical effects could be obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 42, April 2018, Pages 26-30
Journal: Ultrasonics Sonochemistry - Volume 42, April 2018, Pages 26-30
نویسندگان
Jeonggwan Kim, Beomguk Park, Younggyu Son, Jeehyeong Khim,