Greenhouse gas emissions from anaerobic digestion plants - Nguyen Thanh PhongThe 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: 774 | 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 NhuIn 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: 746 | Lượt tải: 0
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...
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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...
6 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 818 | Lượt tải: 0
