• Degradation of glyphosate herbicide by an anodic oxidation process - Thanh Son LeDegradation of glyphosate herbicide by an anodic oxidation process - Thanh Son Le

    4. CONCLUSION This study has shown the possibility of using an electrochemical technique to efficiently oxidise glyphosate (4 -16 mg L-1) by the Ti/PbO2 anode. These works demonstrated that the current intensity, treatment time, pH and initial concentration are the influent parameters. The electrochemical reactor operated at current intensity o...

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  • The S-Block elementsThe S-Block elements

    A soap acts by dispersing grease and oil films into microscopic droplets. The droplets detach themselves from the surfaces being cleaned, become suspended in water, and are removed by rinsing. The alkali metal soaps are water soluble; the alkaline earth metal soaps are not. A soap can function well in hard water only after a part of it is used u...

    pptx27 trang | Chia sẻ: yendt2356 | Ngày: 28/11/2020 | Lượt xem: 732 | Lượt tải: 0

  • Preparation and characterization of porous carbon from rice husk applied for electrode materials - Nguyen Thi Thu HuyenPreparation and characterization of porous carbon from rice husk applied for electrode materials - Nguyen Thi Thu Huyen

    4. CONCLUSIONS Porous carbon was successfully synthesized by pyrolysis of RH at 450 oC during 3 hours under N2 gas atmosphere followed by hydrothermal treatment in NaOH 2M at 150 oC within 3 hours to remove the silica fraction. The activated porous carbon which obtained by K2CO3 activation at 900 oC has high specific surface area (SBET = 796.3 ...

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  • Bài giảng Hóa học vô cơ - Chương 8 – Nguyên tố chuyển tiếp - Nguyễn Văn HòaBài giảng Hóa học vô cơ - Chương 8 – Nguyên tố chuyển tiếp - Nguyễn Văn Hòa

    3. Cho biết độ tan của AgI (TAgI = 8,3.10-17) trong dung dịch NH3 1M. Biết Kb [Ag(NH3)2]+ = 108. 4. Xác định thế điện cực của Ag+/Ag khi cho NaCN vào dung dịch Ag(NO3)2 1M. Biết 0Ag+/Ag = 0,8V và [Ag(CN)2]- = 7,8.1019. (ĐS: - 0,37 V)

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  • Determination of atmospheric corrosion rate of metals in 12 Vietnamese areas - Pham Duy NamDetermination of atmospheric corrosion rate of metals in 12 Vietnamese areas - Pham Duy Nam

    4. CONCLUSIONS Most areas in the mainland of Vietnam has moderate or high corrosion rates for all four standard metals. In marine and coastal atmospheric regions, levels of corrosion are higher. It is particularly high on offshore islands. For instance, a CX corrosion level (extreme level) was found on Bach Long Vy island for steel samples. In...

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  • Study on the properties of silver plating on A6061 aluminum alloy - Vu Minh ThanhStudy on the properties of silver plating on A6061 aluminum alloy - Vu Minh Thanh

    4. CONCLUSION From the properties of the silver plating on the A6061 base, it can be showed that the plating was homogeneous, smooth and shiny structure, with a thickness of about 9.7 μm. The plating has a chemical composition and phase composition of silver metal with very high purity. Measurement results of corrosion current, frost accelerati...

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  • Recoveringrare earth oxide from NdFeB magnet of waste hdds by leaching and selective precipitation methods - Pham Khanh HuyRecoveringrare earth oxide from NdFeB magnet of waste hdds by leaching and selective precipitation methods - Pham Khanh Huy

    4. CONCLUSION The recovery of Neodymium from NdFeB magnet which contains 26 % of total rare earth and 60 % of Fe by crystallization and precipitation method has worked. Magnetic flux density of the NdFeB magnet was eliminated completely at 300 ºC after one hour in electric furnace. By the using selective crystallize and precipitation method by ...

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  • Influence of monoethylene glycol on corrosion inhibitor of wet gas pipeline - Nguyen Thi Le HienInfluence of monoethylene glycol on corrosion inhibitor of wet gas pipeline - Nguyen Thi Le Hien

    4. CONCLUSIONS MEG is a weak acid and causes a decrease in the pH of the solutions with increasing amounts of MEG, while in CO2 saturated solutions the pH of the solution is determined by the partial pressure of CO2. An increase in the MEG concentration results in a decrease in the corrosion rate at all concentrations and conditions of testing...

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  • An investigation of aganoerion polymorphum leaf extract as a copper working fluids’additiveAn investigation of aganoerion polymorphum leaf extract as a copper working fluids’additive

    4. CONCLUSIONS The study has shown that metal working fluids still retained the necessary properties such as flash point and pour point when add an inhibitor performance of an Aganonerion Polymorphum leaf extract. Both Aganonerion Polymorphum leaf extract and imidazoline had a good inhibitory effect on copper corrosion on the investigate soluti...

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  • Synthesis and catalytic activity of branched gold nanoparticles in AQUEOUS MEDIUM - Phan Ha Nu DiemSynthesis and catalytic activity of branched gold nanoparticles in AQUEOUS MEDIUM - Phan Ha Nu Diem

    4. CONCLUSIONS In summary, the combination of CTAB and the Pluronic F-127 yielded stable complexes that act as co-directing agents and favor the anisotropic growth of gold nanostructures in the form of multi-branched nanoparticles with diameter in the range of 80 – 120 nm. The importance of the existence of polymeric coatings on both AuNPs surf...

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