Fabrication of cellulose-Based chitosan coating adsorbents for capture to Cadmium (II) and Zinc (II) - Truong Thi Cam Trang4. CONCLUSION The present work described fabrication of chitosan coating cellulose fiber and application to heavy metal adsorbents. The results were compared in CF, ODCF and CCCF. The efficient removal of Cd(II) and Zn(II) was observed in the CCCF, when chitosan was coated on the fiber. It was followed that the adsorption had saturation behavio...
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Preparation of red mud/graphene composite and its application for adsorption of as(III) from aqueous solution - Ha Xuan Linh4. CONCLUSIONS An effective adsorbent from red mud/graphene composite (REEG) was successfully prepared and applied for As(III) adsorption from aqueous solutions. A removal efficiency of 97.98 % at pH 3 was obtained after 240 min by using of 0.05 g of REEG for 50 ml of 1 mg/L As(III) solution. The maximum adsorption capacity (qmax) was calculate...
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Effect of flux condition on pollutants removal of sponge membrane bioreactor treating hospital wastewater - Dang Bao Trong4. CONCLUSIONS The results demonstrated that sponge membrane bioreactor technology was appropriate for pollutants removal in hospital wastewater. The removal efficiencies of COD, TN, and TP were high and improved with an increase in flux ranges. The treated wastewater complies with Vietnam National Technical Regulation on health care wastewater...
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Synthesis of hydrotalcite powder and bead to remove arsenate - Tung Nguyen Thanh4. CONCLUSIONS Powder HT was synthesized at low and high super saturation condition. The HT formation under high super saturation condition with short reaction time had the highest As(V) removal efficiency. It could remove As(V) from 500 g/L to 6 g/L; met Vietnamese standard for drinking water of 10 g/L (QCVN01-2009/BYT). The high As(V) removal...
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Factors that affect the removal of nitrogen and phosphorous from piggery wastewater using microalgae –bacteria consortium - Ngo Van Chien4. CONCLUSION In this study, microalgae-bacterial consortium could be applied for wastewater treatment from piggery farm after biogas treatment process. After 20 hours of HRTs, removal efficiency of COD, NH4+_N and PO43-_P reached maximum at 71 %, 46 % and 77 % , respectively, under complete stirring condition, C/N was 4/1 and inoculum ratio of...
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Purification and characterization of laccase involved in the decolourization of synthetic dyes and 2,3,7,8-Tcdd congener degradation by the white rot fungus isolated from bavi forest of Vietnam - Phung Khac Huy Chu5. CONCLUSION The molecular weight of the purified laccase of strain FBV40 were 55 kDa and 60 kDa by SDS-PAGE. The optimum and stable pH for the enzymatic activity was 3.0 with ABTS. Kinetic constants Km and Vmax of Lac1 were 0.3 µM and 200,000 µM/mins. The decolourization efficiency of crude and Lac 1 are similar. This strain directly degraded...
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Photocatalytic degradation of formic acid inaqueous with Ni doped TiO2 coated on silicagel - Nguyen Thi Thanh Hai4. CONCLUSION In the present investigation, a study has been carried out on the photocatalytic degradation of formic acid by Ni doped TiO2/SiO2 nano-composite. The experiment results showed that catalyst samples had uniform nano size, anatase crystalline structure and the band-gap energy of Ni-TiO2/SiO2 (2.88-3.00 eV) was lower than that of TiO...
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Characteristics of household solid waste in Hue city - Tran Ngoc Tuan4. CONCLUSION The results of the research on 62 households over 7 days determined the generation amount of household solid waste in Hue city as 286±171 g/person/day, higher than that of 7 years ago (258 ± 163 g/person/day). Among 17 different groups, the two groups making up the largest amount were food waste (56.35 %) and garden waste (10.89 ...
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Using benthos to evaluate the quality of marine environment: Case study from central vietnam after the incident caused by formosa - Nguyen Thi Minh Phuong4. CONCLUSIONS Our study reveals that when the disaster in marine environment occurs, quantitative and qualitative investigations on benthic communities can effectively help to assess the quality of marine environment, with a reasonable budget, in comparison with chemical indicators. This finding can reduce the bias in assessing the quality of ...
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A review of seagrass studies by using satellite remote sensing data in the southeast asia: Status and potential - Nguyen Thi Thien Huong4. CONCLUSIONS The application of remote sensing images and GIS technology in mapping and analyzing of seagrass changes in the Southeast Asian countries are generally limited. Only few studies conducted in Cambodia, Myanmar, Malaysia, Philippines, Vietnam, and Thailand. Up-to-date, there has not any published documents related to the remote sen...
7 trang | Chia sẻ: thucuc2301 | Ngày: 28/11/2020 | Lượt xem: 813 | Lượt tải: 0
