1. Full name: Nguyen Ngoc Tu 2. Sex: Male
3. Date of birth: July 15, 1977 4. Place of birth: Nghe An
5. Admission decision: No. 3713/QĐ-ĐHKHTN, dated on 09/9/2014 by Rector of VNU University of Science.
6. Changes in academic process decisions No. 5035/QĐ-ĐHKHTN, dated on 29/12/2017 and 1679/QĐ-ĐHKHTN, dated on 03/6/2019 by Rector of VNU University of Science on the extension of training and thesis defense for PhD students.
7. Official thesis title: Research on utilization of Zeolite and Bentonite minerals for immobilizing Pb in agricultural soil in Van Lam district, Hung Yen province.
8. Major: Soil and Water Environment 9. Code: 9440301.02
10. Supervisors: Asso.Prof. Nguyen Ngoc Minh and Dr. Trinh Quang Huy.
11. Summary of the new findings of the thesis
- The study has evaluated the effects of the addition of Zeolite and Bentonite minerals on the mobility of Pb in paddy soils; the ability to reduce Pb accumulation in rice plant and in rice; and the assessments the impact of these minerals on the growth of experimental rice plant.
- The study has evaluated the extractable forms of Pb that plants can absorb in the paddy soil, including the exchange bound, carbonate bound and Fe-Mn oxides bound. The study has also found that the paddy soil contains a large amount of PhytPb (the Pb form in the phytolith structure in rice straw) as a result of the process of returning straw (Pb contamination) to the soil. The results of this study may be a prerequisite for proposing solutions to manage and treat Pb-contaminated rice straw.
12. Pratical applicability, if any: Application of Zeolite and Bentonite minerals to limit the mobility of Pb in paddy soils.
13. Further research directions, if any:
14. Thesis-related publications:
[1]. Nguyen, N.T., Nguyen, N.M., McNamara, M., Dultz, S., Meharg, A., Nguyen, T.V., Tran, T.C. (2019), “Encapsulation of lead in rice phytoliths as a possible pollutant source in paddy soils”, Environmental and Experimental Botany, 162, 58-66.
[2] Nguyen Ngoc Tu, Trinh Quang Huy, Ho Thi Thuy Hang, Nguyen Ngoc Minh (2018), “Study on synthesis and assessment of Zeolite properties using SiO2 recovered from straw”, Science and Technology Journal of Agriculture & Rural Development, 6/2018, 88 – 94.
[3]. Trinh, K.T., Nguyen, T.H.T, Nguyen, N.T., Ta-Yeong, W., Meharg, A.A., Nguyen, N.M. (2017), “Characterization and dissolution properties of phytolith occluded phosphorus in rice straw”, Soil and Tillage Research, 171, 19–24.
