کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
640537 | 1456976 | 2015 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Biogenic synthetic schwertmannite photocatalytic degradation of acid orange 7 (AO7) assisted by citric acid
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Biogenic synthetic schwertmannite photocatalytic degradation of acid orange 7 (AO7) assisted by citric acid Biogenic synthetic schwertmannite photocatalytic degradation of acid orange 7 (AO7) assisted by citric acid](/preview/png/640537.png)
چکیده انگلیسی
Schwertmannite was synthesized through the oxidation of FeSO4 by Acidithiobacillus ferrooxidans LX5 cell suspension and characterized using X-ray diffraction spectroscopy (XRD) and scanning electron microscope (SEM). Schwertmannite photocatalytic degradation of acid orange 7 (AO7) assisted by citric acid was further investigated at different initial pH values and different concentrations of schwertmannite or citric acid. The results showed that it was difficult for AO7 to be discomposed by schwertmannite or citric acid alone under UV irradiation. However, the removal of AO7 was significantly enhanced when biogenic schwertmannite and citric acid coexisted in the reaction system. Low pH and high initial concentrations of citric acid and schwertmannite were beneficial to the degradation of AO7. Hydroxyl radical (OH) and Fe(II), the intermediates, were investigated during the reactions to reveal their correlation with the degradation of AO7. A possible mechanism for biogenic schwertmannite photocatalytic decomposition of AO7 in the presence of citric acid was proposed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 143, 25 March 2015, Pages 27-31
Journal: Separation and Purification Technology - Volume 143, 25 March 2015, Pages 27-31
نویسندگان
Jing Guo, Chao Dong, Jing Zhang, Yeqing Lan,