Tài liệu, tai lieu

Investigation of ability liberation of metals from printed circuit boards by mechanical processes for physical separation processes
Air 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...
7 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 981 | Lượt tải: 0
Lab-Scale study on co-digestion of kitchen waste, sludge and sewage
According 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-...
6 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 733 | Lượt tải: 0
Comparison of ethanol yield between separate and simultaneous hydrolysis and ethanol fermentation of formic- Fractionated sugarcane bagasse - Ngo Duy Sa
It 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: 925 | Lượt tải: 0
Initial assessment of some related socio-Economic parameters under the impacts of climate change at district 8 in Ho Chi Minh city
Results 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...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 846 | Lượt tải: 0
Distribution of heavy metals in surface water, suspended particulate matter, sediment and clam (meretrix lyrata) from downstream of saigon-Dong Nai River, Vietnam - Tran Tuan Viet
This study shown that some contaminated heavy metals (Cu, Pb, Zn, Cd and Cr) in surface water could accumulate in SPM, sediment and clam at the coastal area near the estuary of SGDN River. The concentrations of metals in environmental components and Clam Meretrix Lyrata at Can Thanh are higher than at Tan Thanh. Only correlations between Cr conce...
7 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 889 | Lượt tải: 0
Assessment of urban environmental sustainability in hue city as a case study - Tran Anh Tuan
The assessment of urban environmental sustainability in Hue city is considered the first case in Viet Nam as to practical use of the indicator set developed by MONRE. In general, the urban environmental sustainability of Hue city was ranked “fairly good”. It proved that the proposed 5 – step assessment process and the recommended barometer with ...
6 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 1055 | Lượt tải: 0
Application of acid modified red mud for lead ion removal from aqueous solution - Pham Thu Trang
Based on the results presented in this study, the following conclusions can be recommended: Raw red mud generated from alumina production can be used as a low cost adsorbent for Pb(II) removal from aqueous solution. The Pb(II) removal efficiency of red mud can be enhanced by the modification using HCl solution. The highest modification efficien...
9 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 1042 | Lượt tải: 0
Assessment of farmers’ prone state to natural disasters: a case of mainstream hydropower development in the lower Mekong Delta, Vietnam
Result of the study provides a comprehensive view at the prone state of the Mekong Delta under baseline conditions of hydropower development. Communities in Vietnam Mekong Delta have main income sources from rice farming, fishing and aquaculture, so changes in floods pattern or salinity can directly affect people’s livelihoods. In Vietnam, most ...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 997 | Lượt tải: 0
Investigate the efficiency of recovery of recyclables from household wastes in Dau Tieng town,Dau Tieng district, Binh Duong province
Recyclables recovered by scrap buyers: The weight of recyclables purchased from households in the region accounts for 98.84 % of the total weight of recyclables purchased by individuals. The ratio of the weight of recyclables purchased from the other sources (markets, offices, stores, etc.) is only 1.16 %. The average weight of recyclables purch...
7 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 965 | Lượt tải: 0
Modification of titanium dioxide nanomaterials by sulfur for photocatalytic degradation of methylene blue even under visible light - Nguyen Tan Lam
Modification of TiO2 by sulfur enhanced the photocatalytic activity of the TiO2 leading to effective use of the synthesized materials even under visible light region. The obtained results indicated that sulphate ions adsorbed or penetrated of into the crystal lattice of TiO2 leading to decrease band gap energy of titania in anatase form from 3.2...
7 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 867 | Lượt tải: 0

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