Performance of tio2 in photodegradation seafood wastewater - Luu Cam LucThe degradation efficiency of authentic seafood wastewater increased according to the rise of reaction time but this increasing became not considerable after 7 hours of reaction (Figure 8). After 7 hours of treatment, COD value of wastewater reached level A of the standard discharge requirement (COD < 50 mg/L) using TiO2-HT catalyst. Moreover, C...
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Effect of precursor materials and hydrothermal time on the morphology, microstructure and photocatalytic activity of tio2 nanotubes - Thi Ngoc Tu LeThe selection of nanopowder precursor and hydrothermal time has significantly affected the morphology, microstructure and photocatalytic property of the hydrothermally synthesized TiO2 nanotubes. The fabricated TNTs from nanopowder precursor with anatase phase (TiO2 – Merck) shows more uniform morphology and better crystallinity of TiO2 TNTs tha...
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Optimization of simafix red dye decolorization by using advanced oxidation process: photo-Fenton -Nga Thi DinhThe main purpose of wastewater treatment are high removal efficiency and low cost. Based on the results of the experiment which were mentioned above we know that the optimum value of pH for Fenton processes is pH = 3. By minimum values of Fe2+(7.162 mM) and H2O2 (0.037 mM) concentrations in order to achieve the low cost in treating. Using the de...
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Evaluation of the impact of dyke on the practice of using plant protection chemicals and the environment impact quotation index of rice cultivation areas in Thap Muoi, Dong Thap province - Nguyen Thi Van HaAlthough the EIQ has some limitation [10], the study results has indicated that EIQ could be used for future research and for integrated pesticide management evaluative efforts that emphasize the environmental affects of pesticides. It is necessary to survey and evaluate pesticide residual in next few years to be able to reach accurate conclusio...
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Utilization of analytical technique for evaluation of δ13cdic in groundwater using ea-Irms under the condition of Vietnamese lab - Thinh Thi Hong NguyenAnalytical technique for δ13CDIC in groundwater using EA-IRMS was utilized under the condition in Vietnamese lab. As a result, the recovery of DIC in groundwater can reach an average value of 93.14 %. Good reproducibility of the international standards were achieved with the value of first standard deviation less than 0.3 ‰ as well as the accura...
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Solvothermal synthesis of bi2wo6 and its photocatalytic activity under visible light irradiation - Trinh Duy NguyenWe have prepared Bi2WO6 using the solvothermal method at different temperatures. The phase structure and morphology of as-prepared Bi2WO6 samples were characterized by XRD, SEM, and DRS. We have also investigated the photocatalytic activity of these materials for the decomposition of RhB under visible light irradiation. From DRS results, Bi2WO6 ...
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Synthesis and photocatalytic activities of cuo-Tio2 nanocomposites - Thi Ngoc Tu LeCuO has been successfully deposited to TNTs by two different methods (A-C and photoreduction). Compared to the A-C method, the photo-reduction method was more suitable because it remains the stability of morphology and the initial structure of TNTs. The appearance of CuO results in the gradually shifted absorption spectrum of TNTs to the longer w...
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Combination of methane oxidation and denitrification process in a two-Stage bioreactor - Vu Phuong ThuThe two-stage bioreactor was designed to examine the combination and separation the methane oxidation and denitrification processes in an AMO-D system. Methane and oxygen should be supplied together to promote a mutual effect between methane oxidation and denitrification processes and enhance the overall efficiency. When methane and oxygen was ...
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Surface modification of activated carbon from rice husk for enhancing the nickel(ni2+) and cadmium (cd2+) adsorption capacity - Hoa Thai MaThe effect of the fixed conditions of ACRH modification on the Ni2+ and Cd2+ adsorption capacity investigated. The results showed that concentration of HNO3 and reaction time of the modification process effect significantly to the Ni2+ and Cd2+ adsorption capacity. Based on the experimental data, the best conditions were identified to be the equ...
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Enhanced efficiency of treatment of tnt wastewater by internal electrolysis reaction use bimetalic materials fe-Cu - Vu Duy NhonWe examined factors: pH, time, temperature, content of Fe-Cu bimetal to the efficient of TNT contaminated water treatment. Our results show that TNT concentration was reduced from 95-106.4 mg/l to 0.2 - 0.5 mg/l and decomposed almost completely after 8 hours at pH 5, 50 g Fe-Cu bimetal for 1 liter of wastewater, temperature 25 0C, and 8 hours of...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 788 | Lượt tải: 0
