Research on the ability of handling ammonia contaminated air stream by activated carbon materials from coconut fiber (AC-1) and peanut husk (AC-2), impregnated with ZnCl2 - Nguyen Thi Kim Anh4. CONCLUSION The model of ammonia removal by adsorption with 3 materials: Activated carbon made from coconut fiber (AC-1), peanut husk (AC-2) and commercial activated carbon (AC-3) showed its high performance (over 80 %). In particular, AC-2 gave higher performance andResearch on the ability of handling ammonia contaminated air stream by activa...
6 trang | Chia sẻ: thucuc2301 | Ngày: 28/11/2020 | Lượt xem: 488 | Lượt tải: 0
Occurrence of pahs in the atmosphere and incense burning area in Ha Noi associated with health risk assessment - Van Dieu Anh4. CONCLUSIONS The concentration of PAHs in incense burning area were 3 - 7 time higher than those in ambient air in Ha Noi. In both sites, toxic PAHs were the dominant compounds among the detected PAHs. Carcinogenic PAHs accounted for 80 % of total PAHs in incense burning area. The estimated ILTCR indicated that high potential carcinogenic ris...
5 trang | Chia sẻ: thucuc2301 | Ngày: 28/11/2020 | Lượt xem: 493 | Lượt tải: 0
Removal of Cd(II) from aqueous solutions by crumpled graphite oxide - Ha Xuan Son4. CONCLUSION Crumpled graphite oxides were effectively utilized as an effective low-cost adsorbent for the removal of Cd(II) via adsorption from aqueous solution. The SEM pictures show that the CGO possesses a crumpled morphology. The adsorption of Cd(II) followed the Langmuir adsorption model with the maximum adsorption capacity of 40.82 mg/g...
6 trang | Chia sẻ: thucuc2301 | Ngày: 28/11/2020 | Lượt xem: 440 | Lượt tải: 0
Thermal decomposition and Shelf-Life of petn and pbx based on petn using thermal methods - Nguyen Trung Toan4. CONCLUSIONS Thermal behavior and decomposition kinetics of the PBXs with various binder contents were evaluated in comparison with the pure PETN. The experimental results demonstrate that the introduced binder (plasticised NC) accelerated the thermal decomposition process of PBXs, resulting in reductions in their decomposition temperatures a...
9 trang | Chia sẻ: thucuc2301 | Ngày: 28/11/2020 | Lượt xem: 553 | Lượt tải: 0
Optimization of ultrasonic extraction for determination of 16 polycyclic aromatic hydrocarbons in air particle - Hanh Thi Duong4. CONCLUSIONS The ultrasonic extraction procedure for determination of 16 typical polycyclic aromatic hydrocarbons (PAHs) in air particles was optimized. This method is quick, simple and costeffective. The extraction steps were minimized therefore it avoids contamination. Moreover, the method produced the high recovery rates for 16 PAHs with go...
11 trang | Chia sẻ: thucuc2301 | Ngày: 28/11/2020 | Lượt xem: 501 | Lượt tải: 0
Investigation of cerium (III) activated-Ceria Nanoparticles as corrosion inhibitors for carbon steel. CONCLUSIONS This work focused to investigate the corrosion protection performance of cerium salt activated-cerium(IV) oxide nanoparticles in NaCl solution and in organic coating by comparative study with CeO2 nanoparticles and Ce(NO3)3. The size of CeO2 nanoparticles obtained about 11 nm by homogeneous precipitation technique. In a 0.1 M NaCl...
9 trang | Chia sẻ: thucuc2301 | Ngày: 28/11/2020 | Lượt xem: 552 | Lượt tải: 0
Catalytic activity of Cr2O3/sepiolite in the oxidation of benzyl alcohol - Nguyen Tien Thao. CONCLUSIONS Two chromium oxide/sepiolite catalysts with different Cr2O3 loadings synthesized by precipitation route had finely dispersed Cr2O3 particles on the magnesium silicate. The prepared materials possessed high surface area and porosity and were used as catalysts for the oxidation reaction between C6H5CH2OH and t-BuOOH at milder condit...
8 trang | Chia sẻ: thucuc2301 | Ngày: 28/11/2020 | Lượt xem: 482 | Lượt tải: 0
Effects of CoD/TN ratio and loading rates on performance of modified sbrs in simultaneous removal of organic matter and nitrogen from rubber latex processing wastewater - Duong Van Nam4. CONCLUSION The modified SBRs consisting of both oxic and anoxic zones showed high performance in the simultaneous removal of organic matter and nitrogen from rubber latex processing wastewater even under very simple operation modes without any separate anoxic phases and without any additional energy for recycling or mixing mixed liquor. The...
10 trang | Chia sẻ: thucuc2301 | Ngày: 28/11/2020 | Lượt xem: 456 | Lượt tải: 0
Synthesis and application of chitosan/graphene oxide/magnetite nanostructured composite for fe(III) removal from aqueous solution - Le Dang Truong4. CONCLUSIONS In the present work, graphene oxide (GO) was successfully synthesized by Hummers method and it was used to prepared chitosan/magnetite/graphene oxide (CS/Fe3O4/GO) - a novel magnetically separable adsorbent - by a simple co-precipitation route. The Fe3O4 nanoparticles 5 10 15 20 25 5 4 3 2 C e /q e (g/L) C e (mg/g) wi...
7 trang | Chia sẻ: thucuc2301 | Ngày: 28/11/2020 | Lượt xem: 467 | Lượt tải: 0
A study on the localized corrosion inhibition for mild steel in saline solution - Nguyen Dang Nam4. CONCLUSIONS This paper mainly reports the advantage of the Y(4NO2Cin)3 compound to perform highly efficient inhibitor suitable for mitigating corrosion and localized corrosion of mild steel in an aggressive chloride environment. The results indicated that corrosion rate of mild steel increased with an increase in Cl¯ ion in aggressive soluti...
10 trang | Chia sẻ: thucuc2301 | Ngày: 28/11/2020 | Lượt xem: 460 | Lượt tải: 0
