کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7709746 | 1497332 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Addition of a foaming agent to improve N2 gas permeability of PVA/alginate carriers for deammonification process
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Addition of a foaming agent to improve N2 gas permeability of PVA/alginate carriers for deammonification process Addition of a foaming agent to improve N2 gas permeability of PVA/alginate carriers for deammonification process](/preview/png/7709746.png)
چکیده انگلیسی
Long term use of anammox carriers immobilized in PVA/alginate has always faced problem due to expansion and bursting due to dense surface. The physical and morphological characteristics were investigated by adding foaming agent to 0, 0.15, 0.3, 0.6 and 1.2Â w/v% to increase the gas permeability. Maximum real and bulk density, minimum specific surface area and swelling ratio were found at 0.3Â w/v% foaming agent. The gas permeability increased continuously up to 1.2Â w/v% foaming agent, as found in the break point test. The 0.3Â w/v% foaming agent gave optimum bacteria retention capacity of 98.9%. With 0Â w/v% foaming agent, non-porous outer layer was burst due to pressure of produced nitrogen gas as confirmed by morphology test. Addition of foaming agent caused porous structure and the anammox bacteria grew deep inside the carrier. Therefore, the optimum foaming agent content of 0.3% can greatly enhance process stability in the deammonification system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 45, 9 November 2017, Pages 27812-27819
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 45, 9 November 2017, Pages 27812-27819
نویسندگان
Daehee Choi, Dongryeol Lee, Wonsang Yun, Jinyoung Jung,