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| 1 | Orange G degradation by heterogeneous peroxymonosulfate activation based on magnetic MnFe_(2)O_(4)/α-MnO_(2) hybrid显示文摘Wastewater containing an azo dye Orange G(OG)causes massive environmental pollution,thus it is critical to develop a highly effective,environmental-friendly,and reusable catalyst in peroxymonosulfate(PMS)activation for OG degradation.In this work,we successfully applied a magnetic MnFe_(2)O_(4)/α-MnO_(2) hybrid fabricated by a simple hydrothermal method for OG removal in water.The characteristics of the hybrid were investigated by Xray diffraction,scanning electron microscopy,energy-dispersive X-ray spectroscopy,Fourier transform infrared spectroscopy,Brunauer–Emmett–Teller method,vibrating sample magnetometry,electron paramagnetic resonance,thermogravimetric analysis,and X-ray photoelectron spectroscopy.The effects of operational parameters(i.e.,catalytic system,catalytic dose,solution pH,and temperature)were investigated.The results exhibited that 96.8% of OG degradation was obtained with MnFe_(2)O_(4)/α-MnO2(1:9)/PMS system in 30 min regardless of solution pH changes.Furthermore,the possible reaction mechanism of the coupling system was proposed,and the degradation intermediates of OG were identified by mass spectroscopy.The radical quenching experiments and EPR tests demonstrated that SO_(4)•̶,O_(2)•̶,and 1O2 were the primary reactive oxygen species responsible for the OG degradation.The hybrid also displayed unusual stability with less than 30%loss in the OG removal after four sequential cycles.Overall,magnetic MnFe2O4/α-MnO2 hybrid could be used as a high potential activator of PMS to remove orange G and maybe other dyes from wastewater. | Le Thi Thao To Van Nguyen Van Quy Nguyen Ngoc Man Phan Ki Jae Kim Nguyen Nhat Huy Nguyen Trung Dung | 2023 | Journal of Environmental Sciences2023,,2: | 3 |
| 2 | Assessing the test–retest repeatability of the V ietnamese version of the N ational E ye I nstitute 25‐item V isual F unction Q uestionnaire among bilateral cataract patients for a V ietnamese population显示文摘 | Kien Gia To Lynn Meuleners Huei‐Yang Chen Andy Lee Dung Van Do Dat Van Duong Tien Duy Phi Hoang Huy Tran Nguyen Do Nguyen | 2014 | Australasian Journal on Ageing2014,,: | 1 |
| 3 | The Roughness of Model Function to the Basis Functions显示文摘 | To Van Ban Nguyen Thi Quyen Phan Thu Ha | 2013 | Journal of Mathematics and System Science2013,3,8: | 1 |
| 4 | The impact of cataract surgery on depressive symptoms for bilateral cataract patients in Ho Chi Minh City, Vietnam显示文摘 | Kien Gia To Lynn B. Meuleners Michelle L. Fraser Dat Van Duong Dung Van Do Van-Anh Ngoc Huynh Tien Duy Phi Hoang Huy Tran Nguyen Do Nguyen | 2013 | International Psychogeriatrics2013,,: | 1 |
| 5 | A Study on the Selection of the Logistics Centre Location—Vietnam-Based Logistics Sector显示文摘Logistics can be considered as the major drive of the economy.Logistics centres play a significant role in the entire logistics networks from the point of materials sourcing to the point of last mile delivery.The efficiency of a logistics network depends on the existence of logistics centres to connect and integrate entire logistics system.This article discusses the importance of selection of the logistics centre location and recommends the procedure to specify the appropriate logistics centre location as a case of Vietnam-based logistics sector. | JSC Sai Gon Hiep Phuoc Port Ho Chi Minh City Viet Nam Ho Thi Thu Hoa Nguyen Van Khoang Bui Thi Bich Lien Tran Quang Dao To Thi Hang Le Van Thanh | 2020 | Management Studies2020,8,2: | 0 |
| 6 | Effect of Fish Meal (Low Value) as a Nutrient Source in Combination with Inorganic Fertilizer to Enhance the Algal Development in Fertilizer Pond显示文摘To study an application of low-value fishmeal (i.e. organic manure) and the effect of different nitrogen (N) and phosphorus (P) ratios (N/Ps) to the composition of algae prevailing in fertilized ponds for culturing Artemia. Phytoplankton composition and their abundance were determined through qualitative and quantitative sampling and analyses. The experiment included five treatments, control treatment using chicken manure (300 g/m^3), the others with fishmeal in different rates (i.e. 30 g/m^3, 60 g/m^3, 90 g/m^3, 120 g/m^3) with 3 replicates each and in a combination with inorganic fertilizer. Result indicated that the algal density of the experiment varied from 318 × 10^3 to 2,590 × 10^3 cells/mL and a significant difference among treatments (p < 0.05). The density of algae at the second treatment (30 g/m^3) is the highest with a mean density of 2,590 × 10^3 cells/mL. There are 38 phytoplankton species belonging to five phyla of algae, i.e. Bacillariophyta, Cyanophyta, Chlorophyta, Dinophyta and Euglenophyta. Also, there are 18 species of Bacillariophyta, 14 species of Chlorophyta, 4 species of Cyanophyta, 1 species of Dinophyta and 1 species of Euglenophyta. Algae compositions were 32, 34, 31, 27 species at control treatment, and 30 g/m^3, 60 g/m^3, 90 g/m^3, 120 g/m^3 fishmeal treatments, respectively. The dominant genus was usually Nitzschia, Thalassiosira, Navicula (Bacillariophyta), Tetraselmis (Chlorophyta), Oscillatoria (Cyanophyta), Euglena (Euglenophyta). Euglena usually appeared in the late phase of the experiment. | Nguyen Van Hoa Tran Suong Ngoc Dao To Nhi | 2019 | Journal of Environmental Science and Engineering(B)2019,8,1: | 0 |