کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8098908 | 1522077 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Application of Mg-Al-modified biochar for simultaneous removal of ammonium, nitrate, and phosphate from eutrophic water
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
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چکیده انگلیسی
Water eutrophication is a serious environmental problem worldwide. Biochar derived from the thermochemical treatment of biomass, particularly the modified biochar, can be used as a new type of adsorbent for environmental management. In this study, Mg-Al-modified soybean straw biochars (Mg/BC, Al/BC, and Mg-Al/BC) were prepared to remove NH4+, NO3â, and PO43â from eutrophic water. Brunauer-Emmett-Teller analysis, X-ray diffraction spectroscopy, scanning electron microscopy, and Fourier transform infrared techniques were used to characterize the physical and chemical properties of the biochar. The single-solute-adsorption properties and adsorption kinetics of NH4+, NO3â, and PO43â were initially examined. Results showed that the maximum adsorption capacities for NH4+ (0.70Â mg/g), NO3â (40.63Â mg/g), and PO43â (74.47Â mg/g) were achieved on Mg-Al/BC, Al/BC, and Mg/BC, respectively. The bi-solute-coadsorption and tri-solute-coadsorption properties of NH4+, NO3â, and PO43â were then studied to simulate the adsorption in actual eutrophic water. Mg/BC and Al/BC can be used to treat eutrophic water contaminated with PO43â and NO3â, respectively. Mg-Al/BC could effectively improve the quality of water whereNH4+, NO3â, and PO43â coexist. Therefore, the Mg-Al-modified biochars can be used as an excellent adsorbent for the treatment of eutrophic water.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cleaner Production - Volume 176, 1 March 2018, Pages 230-240
Journal: Journal of Cleaner Production - Volume 176, 1 March 2018, Pages 230-240
نویسندگان
Qianqian Yin, Ruikun Wang, Zhenghui Zhao,