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.

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.

The objectives of the dissertation: The objective of the dissertation is to determine the residue of pesticides OCPs in water, sediments, aquatic organisms at the estuary of the Saigon – Dong Nai and to evaluate the toxicity of the pesticides DDTs on the embryos and larvae of the Pacific oysters (Crassostrea Gigas), Fish Medaka (Oryzias latipes).

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

The objective of the dissertation is to determine the residue of pesticides OCPs in water, sediments, aquatic organisms at the estuary of the Saigon – Dong Nai and to evaluate the toxicity of the pesticides DDTs on the embryos and larvae of the Pacific oysters (Crassostrea Gigas), Fish Medaka (Oryzias latipes).

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.

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.

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.

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

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

Objectives of research: Research on ammonia removal in groundwater in Hanoi with the concentration of less than 25mg/L (20mgN/L) by simultaneous Nitrification and Denitrification process in the equipment using MBBR with porous carriers (DHY) of a high surface area of about 6,000-8,000 m2 /m3 , high porosity and light weight, easily moving in water without addition of substrates.

Objectives of thesis: Study on phenol treatment in water by ozonation process combined with catalysts. An empirical kinetic model and one quadratic regression equations were built based on experimental data for destroying phenol by heterogeneous catalytic ozonation process with response variables (initial pH, ozone concentration, catalyst concentration and reaction time). Application of phenol treatment in coking wastewater.