Study on co-Fermentation of cow dung and giant dirt in semi-continuous anaerobic digester - Nguyen Le PhuongThis pilot scale experiment was performed to develop co-digestion process of cow dung and giant dirt in case of one-stage and two-stage processes. The reactors were fed with mixtures of CD and GD of 100 %CD, 50 %CD + 50 %GD, and 100 %GD (0.8 g VS/L*day for 17 L of substrate) and temperatures were maintained at room temperature. During operation ...
6 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 850 | Lượt tải: 0
Application of pre-Ozonation for removal of disinfection by- products pre-cursor from Saigon river water - Bui Thi Thanh LoanBy using a lab-scale ozone contactor, the optimum condition for operation was obtained at ozone dose of 1.5 mgO3/mgDOC, pH 8.5, and contact time of 15 minutes. Under this condition, the removal efficiencies of THMFP, DOC, iron (II), total iron, and manganese were 41 %, 29 %, 23 %, 2 %, and 76 %, respectively. The results also confirmed that ozon...
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Partition of polycyclic aromatic hydrocarbons in water-Sediment system containing humic acid - Van Dieu AnhPartition of Phenanthrene (Phe), Pyrene (Pyr), and Benzo[a]pyrene (BaP) in the sediment water system with the presence of humic acid (HA) was investigated and the effect of HA on the partition was investigated. The presence of dissolved humic acid shifted the equilibrium partition to the water phase, and decreased the apparent sediment water par...
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Sewer discharge characteristics and water balance in dry season in Hue, Vietnam - Tran Nguyen Quynh AnhCombined sewer discharge characteristics in an urban residential area in Hue city on dry days in dry season (DdDs) were presented and compared with those on dry days in rainy season (DdRs). Discharge flow rate on DdDs fluctuated among hours in a day and corresponded to the water consumption trend. Average discharge flow rate on DdDs was 2.33±0.2...
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Simultaneous removal of some heavy metals and arsenic from aqueous solutions by phragmites australis - Tran Thi Huyen NgaA suitable plant for phytoremediation would have a high capacity to accumulate heavy metals and metalloids and a high biomass and rapid growth [8]. In addition, plants able to concentrate metals within the whole plant at concentrations 100 times higher than that in the growing solution (Bioconcentration factor - BCF) should be considered good ac...
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Application of principle component analysis to build provincial eco-Efficiency index for Binh Duong province from 2001-2012 - Doan Ngoc Nhu TamTo increase eco-efficiency, the process of the social economic development of Binh Duong province to simultaneously satisfy three objectives: Increase the value of social and economic development (increase SDI), Reduce exploitation and consumption of resources (reducing RCI), and Reduce environmental pressures (reducing EPrI). Binh Duong provin...
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Investigation of ability liberation of metals from printed circuit boards by mechanical processes for physical separation processesAir separation using vacuum sorter equipment was applied to separate heavy fraction (almost metallic component) and light fraction (almost non-metallic component). PCBs were divided to five different fractions of particle sizes: 0.25–0.5, 0.5–1.0, 1.0–1.4, 1.4–2.36, >2.36 mm. The results of investigation showed that it is inefficient to separate...
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Lab-Scale study on co-digestion of kitchen waste, sludge and sewageAccording to Figure 4, the average TKN concentration of MH1influent (1128 mg/L) was lower than that of MH2 (1443 mg/L), while the average TP concentration of MH1 influent (33 mg/L) was higher than that of MH2 (7 mg/L) (Fig. 5). The average ammonia concentration of MH1 influent and MH2 influent were 131 mg/L and 60 mg/L, this showed that organic-...
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Comparison of ethanol yield between separate and simultaneous hydrolysis and ethanol fermentation of formic- Fractionated sugarcane bagasse - Ngo Duy SaIt was seen that for 96h process, the SSF-6h-370C having ethanol concentration and ethanol recovery higher than those of SSF-6h-300C (Figure 2.B). In investigation of the influence of temperature on the SSF of cassava starch, Mingjun et al. (2012) recognized the balancing between hydrolysis temperature and fermentation played important role in t...
9 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 738 | Lượt tải: 0
Initial assessment of some related socio-Economic parameters under the impacts of climate change at district 8 in Ho Chi Minh cityResults of AHP and LVI evaluation show that CC impacts on the studied parameters at District 8 in HCMC can be divided into two groups of level from four criteria guided by the ADB but also six criteria by the WB as tried in this study. The first impact level group includes six main criteria whereas the second impact level group includes eighteen...
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