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Bifunctional erdite rods as an effective flocculant and catalyst in electro-Fenton systems

Progress in Natural Science:Materials International 2023年第4期33卷 518-525页

作者： Tong Sun Chengzhong Sun Ying Wang Jiancong Liu htet oo kaung Suiyi Zhu Zhongkai University of Agriculture and Engineering Crude Oil Shipping and Marketing Company Dagang Oilfield Company CNPC Supervision Company Jilin Oilfield Company CNPC School of Environment Northeast Normal University Lversheng Environmental Technology Company

Erdite rods were massively produced via a one-step alkaline heating route with the complete recycling of waste waterwork sludge. The sludge was a mixture of Fe, Mn, Al, and Si, but only Fe-bearing substances were converted as erdite rods. The erdite rods had 100 nm diameter and 1-5 μm length, and was hydrolysed as Fe-SH-rich flocs in wastewater. Its hydrolysis became slow in the presence of electric field but accelerated by adding PMS. pNitrophenol was targeted as organic pollutant to determine the rods performance. The removal efficiency of pnitrophenol was 7.4% by adding erdite rods, but up to 44.6% with the addition of erdite/PMS, and then dramatically increased to 98.7% in the electro-PMS/erdite system. Given that the free Fe was less than 30 mg/L,the surface Fe of Fe-SH-rich flocs predominated the PMS activation, in which the surface Fe enriched in electronic field and then was involved in the redox reaction of PMS and then reduced by the adjacent S on flocs. This enabled the recycling of Fe3+/Fe2+to activate PMS at high level. Thus, the erdite rods showed high p-nitrophenol removal efficiency in the electro-Fenton system in comparison with the other reported reagents, e.g. ferrous sulphate,ferbam, pyrite and FeS.

关键词： Erdite rods p-Nitrophenol Fenton reaction Wastewater treatment Flocculant

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Formulation and Evaluation of Lipstick with Betacyanin Pigment of <i>Hylocereus polyrhizus</i>(Red Dragon Fruit)

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Journal of Cosmetics, Dermatological Sciences and Applications 2020年第4期10卷 212-224页

作者： Theeoo Lwin Cho Yi Myint htet htet Win Wah Wah oo Khit Chit Department of Pharmacology University of Pharmacy-Mandalay Mandalay Myanmar Department of Pharmaceutics University of Pharmacy-Mandalay Mandalay Myanmar Biotechnology Research Department Kyaukse Myanmar Department of Food and Drug Administration Mandalay Myanmar Department of Food and Drug Administration Naypyidaw Myanmar

Lipstick is the most widely used cosmetic product. Although lipstick gives a lot of social, psychological and therapeutic benefits, it may harm the consumers. Because most lipsticks contained high lead level and long term use of high lead level lipstick may harm the consumers. Research findings have suggested that administration of various antioxidants can prevent or subdue various toxic effects of lead and generation of oxidative stress. Hylocereus polyrhizus (Red dragon fruit) is widely available in Myanmar and it contains powerful antioxidant amaranth colorant called betacyanin pigment. It can prevent the oxidative stress caused by low level of lead, thus suitable as natural colorant for lipstick. As a role of pharmacist, this research was intended to minimize the adverse effects of lipsticks by formulating natural lipstick with betacyanin pigment obtained from H. polyrhizus and other natural ingredients. Formulation of lipstick was carried out by heating and blending method with homogenizer at a speed of 12000 rpm. Then, pH, melting point, surface abnormalities, aging stability, perfume stability and antioxidant activity were performed as quality evaluation. Skin irritation test, microbial analysis and lead content determination were carried out as safety evaluation. Formulated lipsticks with betacyanin pigment of H. polyrhizus have acceptable quality. The IC50 of standard ascorbic acid and formulated lipstick were 4.51 μg/ml and 22.23 μg/ml respectively. In quantitative analysis for microbiological control, formulated lipstick had no visible colony and in qualitative analysis, Staphylococcus aureus, E. coli and Pseudomonas aeruginosa were not detected in 0.5 g of formulated lipsticks. Moreover, lead content of formulated lipstick was only 2.9 ppm that is within allowable limit and it had negligible skin irri

关键词： Lipstick Lead Betacyanin H. polyrhizus Quality Safety Red Dragon Fruit

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Comparison of Experimental and Theoretical Output Power of Grid Connected Photovoltaic System in Super Mega Factory

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Journal of Electrical Engineering 2018年第1期6卷 28-32页

作者： Kyaw Kyaw htet Than Zaw Htwe Wint Wint Kyaw Zeya oo Department of Electrical Power Engineering Yangon Technological University Yangon 095 Myanmar Department of Engineering Physics Yangon Technological University Yangon 095 Myanmar

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