Tài liệu, tai lieu

Removal of ni2+ from aqueous solution by adsorption onto tea waste–derived activated carbon - Long Giang Bach
The porous activated carbon fabricated from cheap and abundant tea waste source was found to be an effective adsorbent for removal of Ni2+ ions from aqueous solution. The RSM involving CCD was successfully applied to assess the influence of independent parameters, including Ni2+ initial concentration, pH and AC dosage on the removal of Ni2+ and ...
9 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 941 | Lượt tải: 0
Integrated evaluation model for surface water quality a case study in Ho Chi Minh city, Vetnam - Thu Thi Minh Nguyen
The water quality evaluation model was built based on the logic of fuzzy theory. Quality monitored data from a catchment area in a developing city has been applied for testing the results and compared to other regular method, Vietnam national water quality index. The results of the two methods show parallels and this in turn shows that fuzzy eva...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 793 | Lượt tải: 0
Greenhouse gas emissions from anaerobic digestion plants - Nguyen Thanh Phong
The emission factors were transferred into CO2 equivalents according to IPCC (2007). The overall CO2 emissions were in a range from 31 to 435 kg (Mg biowaste)-1. The CH4 emissions from AD plants were more important than the emissions from N2O and NH3 (Figure 5A). The emissions of CH4 accounted from 36 - 92 % while the emission of N2O and NH3 con...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 807 | Lượt tải: 0
Effect of organic loading rate on simultaneous removal of nitrogen and phosphorus from aquatic product processing wastewater by advanced a2/o – baf system - Nguyen Xuan Quynh Nhu
In this study, the model of combined A2/O – BAF system was operated well and treatment efficiencies of nitrogen and phosphorus at four loading rates were very high. It was capable of achieving effluents with very low nitrogen and phosphorus concentrations from aquatic product processing wastewater. For a loading rate of 0.75 kgCOD/m3/day, treatm...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 783 | Lượt tải: 0
Co-Oxidation reaction activity of pt cluster catalysts on ti0.9mo0.1o2 support - Trung Thanh Nguyen
In 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: 1050 | Lượt tải: 0
Community participation in rural water supply: a case study in My Hoa – Tra Vinh - Nguyen Thi Thuy
The 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...
7 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 916 | Lượt tải: 0
Antibiotics and pesticides in water and sediments from intensive shrimp farms in southern vietnam - Nguyen Truong An
Applying 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...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 935 | Lượt tải: 0
Optimizing the process of transforming coffee husks into biochar by means of hydrothermal carbonization - Tran Thi Hien
Study 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 ...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 986 | Lượt tải: 0
Distribution and sources of polycyclic aromatic hydrocarbons in aquatic sediment from Can gio coastal wetland, Hochiminh city
Present 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...
7 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 702 | Lượt tải: 0
Isolation and identification of aerobic microbial community treating benzene from a constructed wetland system
The 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...
7 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 745 | Lượt tải: 0

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