Co-Oxidation reaction activity of pt cluster catalysts on ti0.9mo0.1o2 support - Trung Thanh NguyenIn summary, the novel catalyst is synthesized and characterized and it consists of clusters of Pt atoms dispersed on a Ti0.9Mo0.1O2 nanosupport. This catalyst showed extremely high activity for CO oxidation reaction. The chemical reactivity of our positively charged single Pt atoms. The more vacant orbitals of the cluster of Pt atoms, because of...
7 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 902 | Lượt tải: 0
Community participation in rural water supply: a case study in My Hoa – Tra Vinh - Nguyen Thi ThuyThe research yields some insights related to water supply schemes in rural areas of Vietnam. Insights are gained with respect to top-down and bottom-up aspects of the realization and operation of the schemes. First, the analysis of government documents, such as the Law on Water Resources, Prime Minister’s Decisions, Ministerial Joint Circulars a...
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Antibiotics and pesticides in water and sediments from intensive shrimp farms in southern vietnam - Nguyen Truong AnApplying passive sampling with POCIS sampler in monitoring the antibiotic and pesticide concentrations in the intensive shrimp farm water give accurate and continuous results. Survey results at two shrimp farming show ABs and pesticides which were chosen in this study were commonly existed in the water and sediments. Antibiotic concentrations in...
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Optimizing the process of transforming coffee husks into biochar by means of hydrothermal carbonization - Tran Thi HienStudy optimal factors in the converting process of coffee husk into biochar with high performance by means of hydrothermal carbonization using software Modde 5.0. The results showed that biochar performance depends on the reaction temperature and time more than the biomass to water ratio. The results coming from SEM, BET analysis show that when ...
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Distribution and sources of polycyclic aromatic hydrocarbons in aquatic sediment from Can gio coastal wetland, Hochiminh cityPresent study provided quantitative information in order to evaluate PAH contamination in sediment of Can Gio coastal wetland. A distinct spatial trend in PAH pollution between was observed. The mean ∑10PAHs concentration averaged 26±8.7; 8.7±5.4 and 16±9.3 ng/g for inland, estuarine and coastal zones, respectively. These pollutants tend to be a...
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Isolation and identification of aerobic microbial community treating benzene from a constructed wetland systemThe molecular identification of the isolates was performed by sequencing the 16S rRNA gene and comparing the sequences to the 16S rRNA database. For strain VS1, a comparison between the sequences of this strain to the 16S rRNA database using BLAST analysis revealed that strain VS1 is most closely related to Pandoraea pnomenusaCM25 at 99.9 % simi...
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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...
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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...
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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...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 566 | Lượt tải: 0
