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3 Progress of Joint Research Activities
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Research No.: ㉚ E-6 ODA Loan Joint Research Date: Oct. 16 , 2020
th
To study possible techniques to treat soil, water

1 General Title and air pollution in the specific context of
the Vietnamese Mekong Delta

CTU: Pham Van Toan (Leader), Doan Van Hong Thien, Dang Huynh Giao, Nguyen Huu Chiem, Van Pham Dan Thuy,
Core Kim Lavane, Bui Thi Minh Dieu, Quach Ngoc Thinh, Ngo Thuy Diem Trang
2
Members Japanese Universities: KOYAMA Jiro (Kagoshima University), TARAO Mitsunori (TUAT), NISHIMURA Taku (Tokyo),
NISHIKAWA Yukihiro (KIT), MIYATA Seiji (KIT)
3 Duration May 2017 – Oct. 2020 (3 years and 6 months) <Kick-off>

Main
4 Objectives The aims of the program are to establish techniques to mitigate
environmental pollution from agricultural development, aquaculture,
economy and climate change.
5 Focal Points ❖Experiments on removing target
pesticides/antibiotics from
wastewater by the pilot-scale
model of wastewater treatment
system. (5) Ion exchange ;(4) Cold plasma; (3) sedimentation; (2) coagulation/flocculation and (1) Storage tank
Fig. 1 Schematic of pilot- scale model of wastewater treatment system Fig. 2 Removal efficiency of chlorpyrifos from wastewater
❖ Synthesis Co-ZIFs and
experiments on removing organic
pollutant from water through
catalytic oxidation process of
Fig. 4 SEM micrographs of Ag/ZnCo- Fig. 5 The Congo
ZIFs at the different magnification Red (CR) and another kind of Co-ZIFs.
ratios (a) x5000, (b) x10000, (c) Malachite Green
x30000; (d) ZnCo-ZIFs (MG) removal
efficiency after
four times of
Fig. 3 PXRD of (a) Ag/ZnCo-ZIFs, (b) ZnCo-ZIFs-1:8 reusing Ag/ZnCo-
ZIFs
❖ Development processes for
manufacturing nanocellulose
from paper and investigation of Fig. 6 Processes of manufacturing nanocellulose
the conditions for producing
cellulose membrane.
Fig. 7 Production processes of cellulose membrane
❖ Experiments on developing the low cost system
for domestic water treatment. ❖ Experiments on developing a prototype of
MFC electricity harvesting system.

Fig. 8 Constructed wetland systems Fig. 9 Removal efficiencies of constructed wetlands
using charcoal residues
Fig. 10 Configuration of electricity Fig. 11 MFC voltage (orange curve) and MOSFET
harvesting system gating signal (blue curve)
❖ Experiments on exploring the microbial activities ❖ Experiments on screening plant species having
associated with the pollutant reduction. Inactivation of ability to remove salts and selection of salt-
E. coli enhanced by anaerobic microbial iron reduction. resistant plants species.

Fig. 12 Effects of iron reduction on Fig. 13 Ferruos ion production (A) and inactivation rate of E. coli at three stages of
inactivation of E.coli anaerobic incubation Fig. 14 Salt tolerance capacity of Para grass Fig. 15 Field experiment on the plant species having
(Brachiaria mutica), Paspalum grass (Paspalum ability to remove salts
atratum) and Setaria grass (Setaria sphacelata)
6 Perspectives Developed technologies have valuable scientific contribution and potential applicability in the
context of the Mekong Delta in Viet Nam
ⓒ All Rights Reserved, Nov. 2020 (CTU)

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