Summary of Environmental Doctoral Thesis

Study purposes: Research and propose educational measures on environmental protection behaviors through experience for preschoolers 4-5 years old to contribute to improving the results of environmental protection education for children in preschool today.

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Objectives of the thesis: The objective of this study is to develop an energy and nutrients recovering wastewater treatment process combining physicochemical and biological methods for NRP wastewater.

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Objectives of the dissertation: Research on the degradation process of PE films containing prooxidant additives and recycled polyethylene. After that, preparing plant polybags with different time of degradation.

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The research goals of the thesis: Preparation and characterization of activated carbon products denaturated by surface oxidation technics. Determination of cation exchange capacity of the materials. Investigation of Mn and Fe linking on surface of prepared materials to form a new adsorption material for effective removing hazard anions in water environment.

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The research objectives of the thesi: Manufacturing biochar (BC) and activated carbon from coffee husk; Fabrication of biochar/activated carbon composite materials from coffee husk and MnFe2O4 nanomaterials to treat Cr(VI) and Ni(II) ions in water. Clarifying adsorption mechanism and heavy metal ion adsorption model on VLHP from coffee husk.

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objectives: To identify the state of heavy metal pollution in water and food in two coastal communes of Thuy nguyen District, Haiphong city in 2017- 2018. To describe the pattern of disease and the risk due to exposure to heavy metal contamination among community residents in the study area.

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Summary of Environmental engineering doctoral thesis: Investigation of activated carbon denaturation in order to create material for treatment of several hazard ions in water environment

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Research objectives: Assessing manifestation, finding out reasons, and warning risk of changes in Tien river channel belongs to Dong Thap province; proposing solutions for adaptive capacity with changes in Tien river channel belongs to the study area.

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Objectives of this dissertation: Develop the optimal preparation procedure of modified biochar and activated carbon derived from an agricultural byproduct, such as corncob wastes; Investigate the physical and chemical properties of modified biochar and activated carbon; apply modified biochar and activated carbon in removal of ammonium from synthesised and real water under batch and column experiments.

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Studying species component, distribution of honey bee species belonging to the family of Apidae, analyzing the ecological relations and determining for using some honey bee species as an indicator of environmental pollution on the affected ecosystems (farm ecosystems, perennial garden ecosystems, cultivated forest ecosystems and evergreen forest ecosystems) in some provinces in the Northern Vietnam, contributing to the conservation of honey bee species and producing highquality honey products for the economic development of local people.

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This thesis focuses on simulating the internal circulation process (gas pulling water) to determine: The amount of water (QN) was pulled up by the amount of gas (QK); and mixing ability of generated gas and circulating water flow, from which to calculate the periodic structure in the IC system.

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Research to develop an analytical method for methyl mercury in biological samples with high sensitivity, selectivity, and accuracy; research and assessment of the transformation and bioaccumulation of mercury in sediment and biological samples in Than Sa gold mining area, Vo Nhai district, Thai Nguyen province.

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Successfully synthesized nano – mixed oxide by different gelling agents; compared, selected the appropriate gelling agent; researched to evaluate the catalytic activity of mixed oxide nanoparticles formed with pollutants methyl orange (MO), methylene blue (MB). Successful dispersed mixed oxide nanoparticles on rGO; investigated catalytic activity of material systems on parathion, fenitrothion.

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Develop the process of producing crude extracts, fractions and pure chemical compounds isolated from E. fortunei; tudy of inhibitory effect of the crude ethanol extracts from E. fortunei on the growth of M.aeruginosa and evaluating their ecological safety to non-target aquatic organisms.

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Assess the EA implementation in mining enterprises in Binh Dinh province; measure the impact of factors on the EA implementation in mining firms in Binh Dinh province; proposing solutions to perfect the EA in mining enterprises in Binh Dinh province.

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The objective of this study is to develop an energy and nutrients recovering wastewater treatment process combining physicochemical and biological methods for NRP wastewater.

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This thesis aims to investigate advance techniques for leachate treatment, especially electrocoagulation, biological filtration, and their combination.

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Researching and developing technology for producing magnetic graphite materials from Vietnamese flake graphite sources as materials to be applied in treating the organic polluted environment.

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Study on modification/functionalization of conductive polymers using nanostructured materials (CNTs, Fe3O4 nanoparticles and Graphene) to develop the electrochemical biosensor and apply this biosensor in biomedical and environmental analysis.

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To determine status information disclosure of environmental accounting, influence factors and the extent of the impact of the factors to the disclosure of environmental accounting information in aquaculture enterprises Vietnam.

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