A5101932829- Odor and Emission Control Technologies
- Environmental Chemistry and Analysis
- Electrochemical sensors and biosensors
- Anaerobic Digestion and Biogas Production
- Marine Biology and Environmental Chemistry
- Water Treatment and Disinfection
- Stress Responses and Cortisol
- Analytical Chemistry and Sensors
- Food Safety and Hygiene
- Adsorption and biosorption for pollutant removal
- Indoor Air Quality and Microbial Exposure
- Arsenic contamination and mitigation
- Membrane Separation Technologies
- Telecommunications and Broadcasting Technologies
- Microplastics and Plastic Pollution
- Toxic Organic Pollutants Impact
- Conducting polymers and applications
- Wastewater Treatment and Nitrogen Removal
- Advanced Chemical Sensor Technologies
- Phosphorus and nutrient management
- Effects and risks of endocrine disrupting chemicals
- Municipal Solid Waste Management
- Environmental remediation with nanomaterials
Vietnam National University, Hanoi
2019-2024
VNU University of Science
2019-2020
A novel iron-modified biochar (FMBC) derived from rice straw was synthesized using FeCl 3 modification for efficient As(V) removal aqueous solution. FTIR and SEM-EDX analyses were carried out to determine the mechanism involved in process also demonstrated that Fe had loaded successfully on surface of modified biochar. The showed higher arsenic ability than raw a maximum adsorption with an initial solution pH 5.0. Moreover, tested biochar, kinetics data well fitted by pseudo-second-order...
The effect of copper, zinc, chromium, and lead on the anaerobic co-digestion waste activated sludge septic tank in Hanoi was studied fermentation tests by investigating substrate degradation, biogas production, process stability at mesophilic fermentation. tested heavy metals were a range concentrations between 19 80 ppm. After tests, TS, VS, COD removal efficiency 4.12%, 9.01%, 23.78% for Cu(II) added sample. Similarly, efficiencies Zn(II) sample 1.71%, 13.87%, 16.1% Cr(VI) 15.28%, 6.6%,...
The effects of copper and zinc on the anaerobic co-digestion process waste activated sludge septic tank in Hanoi were investigated.The fermentation tests carried out 32 batch fermenters with 20 d hydraulic retention time at mesophilic temperature conditions.The different metal ion concentrations (19, 40, 60, 80 ppm) utilized for experiments, respectively.Cumulative biogas change total solids (TS) concentrations, volatile solid (VS), chemical oxygen demand (COD) tested during experiments.The...
A cross-sectional descriptive study design aims to investigate food safety knowledge and practices of 422 vegetarian-food processors at 126 vegetarian production, processing trading establishments in Hanoi City. The results showed that 24,5% had an acceptable general about safety. Their infrastructure hygiene, equipment tools is 39.2% 31.4% respectively. There are 32.1% studied subjects reach hygiene practices. proportion with evidence being trained only 31.1%. Research expected as the basis...
In this study, we developed a non-enzymatic electrochemical sensor using porous graphene electrode modified with ZnO nanoparticles (ZnO/fPGE sensor) to determine xanthine (XA) content. The ZnO/fPGE is fabricated hydrothermal method and CO2 infrared laser writing technique on polyimide film. morphology, structure, properties of the were meticulously characterized Raman spectroscopy, field-emission scanning electron microscopy (FE-SEM), Von-Ampe spectroscopy methods. exhibited broad linear...
This report presents the development of an electrochemical sensor for detecting cortisol in sweat, utilizing a flexible porous graphene electrode (fPGE). The fPGE was created using laser-induced technique on polyimide substrate. characterization material conducted through SEM and Raman spectroscopy. surface modified with cortisol-aptamer assistance linker molecules, PASE, to form sensor. properties were assessed cyclic voltammetry (CV). Cortisol detection achieved indirectly via reaction...
Cyclic volatile methylsiloxanes (cVMSs) are synthesis chemicals used widely in consumer products such as building materials, households, electrical and medical devices, personal care products. Due to being many applications, cVMSs released into various micro-environments. Recently, the pollution level of environment including sewage sludge has been gradually concerned. In this work, four typical cVMSs: hexamethylcyclotrisiloxane (D3), octamethylcyclotetrasiloxane (D4),...