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Optimization of the aqueous extract process from mangosteen peel for dyeing silk - Hong Phuong Pham ThiThe results of optimum extraction conditions were obtained temperature at 61.4 oC, time 149.2 minutes and percent of extract ratio is 84.6342 % (1/5). The results showed the juice extracted from mangosteen peel can be use to dye silk fabric with high color strength and fastness. The results allow hope a dyeing natural colors technology were prod...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 837 | Lượt tải: 0
Removal of total phosphorus from municipal wastewater using cylindrical aluminum electrode in continuous mode - Tran Tuan VietThis study showed that the applying of Aluminum electrode in continuous mode to remove T-P from municipal waste water is very efficient. According to this results, the samples with low TSS concentrations were removed T-P more efficient than other. With high TSS concentrations, the ability to separate into 2 phases of samples was high when HRT in...
6 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 853 | Lượt tải: 0
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...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 765 | Lượt tải: 0
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...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 976 | Lượt tải: 0
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...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 863 | Lượt tải: 0
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...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 908 | Lượt tải: 0
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 ...
6 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 971 | Lượt tải: 0
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...
7 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 860 | Lượt tải: 0
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 ...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 739 | Lượt tải: 0
