09/05/2026
🔥 [STUDENT SCIENTIFIC RESEARCH COMPETITION 2025–2026] 🔥
*** TOPIC : "SYNTHESIS AND CHARACTERIZATION OF HYDROXYAPATITE FOR HEAVY METAL ADSORPTION ENHANCED BY MICROBUBBLE TECHNOLOGY" ***
Research Team Members
Hua Cong Thanh - Class 22H5
Nguyen Hoai Trung - Class 22H5
Le Van Huy - Class 22H5
Supervisor
Assoc. Prof. Dr. Nguyễn Thị Thanh Xuân
Dr. Phan Thanh Sơn
In recent years, heavy metal contamination in industrial and domestic wastewater has emerged as one of the most serious environmental challenges worldwide. Heavy metals such as Pb²⁺, Cd²⁺, Cu²⁺, Zn²⁺, and Cr⁶⁺ are characterized by high toxicity and resistance to degradation in the environment. In Vietnam, rapid industrialization, particularly in mining, metallurgical, and chemical industries, has significantly increased the discharge of heavy metals into water bodies, thereby causing adverse effects on ecosystems and human health. Conventional treatment methods, including chemical precipitation, ion exchange, electrochemical techniques, and membrane filtration, have demonstrated certain levels of effectiveness; however, they still face several limitations, such as high operational costs, considerable energy consumption, and reduced treatment efficiency at low contaminant concentrations. In this context, adsorption technology has emerged as a promising alternative owing to its simplicity, high efficiency, and flexible applicability. Hydroxyapatite (Ca₁₀(PO₄)₆(OH)₂) is a material possessing a stable crystalline structure, large surface area, ion-exchange capability, and strong affinity toward heavy metal ions. Furthermore, hydroxyapatite exhibits excellent biocompatibility, low toxicity, and can be synthesized from natural resources such as eggshells, animal bones, and seafood waste, thereby contributing to the promotion of circular economy practices and sustainable development. Nevertheless, the adsorption efficiency of hydroxyapatite is still strongly influenced by factors such as particle size, surface structure, and mixing conditions within the treatment system. Microbubble technology has recently been considered a novel approach for enhancing mass transfer efficiency and phase contact in water treatment systems. Microbubbles, typically smaller than 100 µm in diameter, possess a high specific surface area and prolonged residence time in solution, which improve the dispersion of adsorbent materials and enhance interactions between the adsorbent surface and metal ions. The integration of hydroxyapatite materials with microbubble-assisted systems may generate synergistic effects, significantly improving heavy metal removal efficiency compared with conventional adsorption methods. Based on these considerations, the synthesis and characterization of hydroxyapatite materials for heavy metal adsorption with microbubble assistance are of considerable scientific and practical significance. This study presents the results obtained from the synthesis and characterization of hydroxyapatite materials, highlighting their potential applications in industrial wastewater treatment, particularly in areas heavily affected by resource extraction and processing activities.
🌟 This competition aims to foster innovation, enhance research capabilities, and generate meaningful contributions to the community.
🌟 We kindly request that all submissions be sent to: [email protected] in accordance with the provided template.
⏰ Timeline:
• Submission Deadline: April 28, 2026
• Favorite Project Voting Deadline: April 28, 2026
🏆 Evaluation and scoring:
In addition to the judging panel’s evaluation, a “Favorite Project” category will be determined based on social media engagement as follows:
• Like/Reaction: 1 point
• Share: 3 points
(The shared post must have the hastag to claim the points)
🎁 Prize Structure:
🥇 First Prize: 1.500.000VND
🥈 Second Prize: 1.000.000VND
🥉 Third Prize: 500.000VND
⭐ Favorite Project Award: 500.000VND
📍 Venue:
📩 Contact for more information:
• Phone: 03579.19598 Mr. Son
We look forward to your participation and your innovative contributions to science and the community!