presentation pritam.pptxsdfdsfrybj n, kyrt

1. Development of immobilized iron catalyst for water purification
Pritam Chakraborty
PG-II
Reg no: 24405110041
Roll no: CHEM041
Supervisor: Dr. Debobrata sheet
Assistant Professor
Presidency University

2. Types of
pollutant
Journal of Hazardous Materials Advances , 2025 , 18,100755

3. OH
HN O
OH
O
H2N
S
O
O H
N
N O
SOME ORGANIC POLLUTANTS
S
paracetamol
ibuprofen
sulfamethoxazole
OH
Cl Cl
2,4-DCP
DIBENZOTHIOPHENE
O
S
H N
H
H2N
OH
O
N
O
HO
AMOXICILLIN
N
NH2
O
Carbamazepine
R
S
ORGANIC
SULFIDES
Chem . Rev, 2019, 119, 3510-3673

4. ADVANCE OXIDATION PROCESS
• THIS PROCESS WAS FIRST PROPOSED IN
1980 FOR WATER PURIFICATION.
• DURING WASTEWATER TREATMENT
HYDROXYL RADICALS OR SULFATE RADICALS
ARE GENERATED IN SUFFICIENT QUANTITY
TO REMOVE REFRACTORY ORGANIC
MATTERS.
Hydroxyl radicals in AOPs
• Strong oxidizing agent
• Non-selective oxidant
• Produced through activation of
H2O2 / H2O by Fenton like process
RSC Adv., 2016,6, 84999-85011
Catalysts 2023, 13(11), 1440

5. FENTON PROCESS
CLASSICAL FENTON
CLASSICAL
FENTON
PRECIPITATION OF
IRON(III)HYDROXIDE
LIMITATION OF PH
RANGE(2-5)
POOR SELECTIVITY
 Large amount of
Fe(II) sludge
 Low catalyst
efficiency
 Limited pH range
DISADVANTAGES
ADVANTAGES
 Readily recycled
 Long lived
 Cheap
 Used in wide range
HETEROGENOUS FENTON

6. FENTON Fe-COMPLEX BASED
FENTON
Fe-
COMPLEX
BASED
DIFFICULT TO
SEPARATE
LESS STABLE
EXPENSIVE
ADVANTAGES
 Highly selective
 Tannable reactivity
 Can be modulated
through mimicking
biological oxidation
catalyst
NEED SOME
IMPROVEMENT
IM
PROVEM
ENT W
AYS
Colloids and Surfaces A: Physicochem. Eng. Aspects 460 (2014) 151–157
Sustainability 2021, 13(10), 5717
Coatings 2023, 13(8), 1456

7. SYNTHESIS
SYNTHESIS OF STARTING MATERIAL
+
N
N
NH2 H
O
MeOH
N
N
N
NaBH4
N
N
H
N
H2O
SYNTHESIS OF SILICA NANOPARTICLE
Si
O
O
O
O
TETRAETHYL ORTHOSILICATE
H2O,NH3
PH>8,EtOH
OH
OH
OH
HO
HO
OH
OH
HO

8. SYNTHESIS
SYNTHESIS OF THE CATALYST
N
N
H
N
ET3N
R.T, DRY ACN
Si
O
O
O
NCO
Si
O
O
O
N
H
C O
N
N
N
OH
HO
HO
OH
HO O Si
O
O
H
N
C
N
N
N
O
Fe(OTf)2
DCM,ACN
OH
OH
OH
HO
HO
OH
OH
HO
CH3CN
3-Isocyanatopropyltriethoxysilane
OH
O
O
HO
HO
OH
O
HO Si
H
N
O
N
N
N
Fe
OTf
OTf

9. CHARACTERIZATION
1H NMR IN 400 MHz • Ha proton of dpa at 3.99 ppm shifted to 4.6
ppm in the product.
• Hd and He proton of SILANE@NCO at 3.5
ppm and 1.7 ppm shifted to 3.7 ppm and
3.1 ppm respectively.

10. APPLICATION
• THIS CATALYST DEGRADE 80% OF Ibuprofen(ibp)
OH
O
Ibuprofen(ibp)
FUTURE WORK
H2N
S
O
O H
N
N O
sulfamethoxazole
OH
Cl Cl
2,4-DCP
N
NH2
O
Carbamazepine
Ibp standard
Product

11. ACKNOWLEDGEMENT
• I AM HEARTILY THANKFUL TO Dr. DEBOBRATA SHEET FOR HIS
GUIDENCE.
• HEARTILY GRATEFUL TO ALL FACULTY, NON-TEACHING STAFF OF
THE DEPT. OF CHEMISTRY OF PRESIDENCY UNIVERSITY.
• VERY MUCH THANKFUL TO MY SENIORS AND BATCHMATES,
FRIENDS.

13. Fenton AOP
MOST WIDELY USED
AOP IS FENTON LIKE
AOP
ENVIRONMENT
FRIENDLY
INEXPANSIVE
REAGENT
FENTON REACTION
A SOLUTION OF Fe2+
AND H2O2
SOLUTION WHICH PRODUCES
HYDROXYL RADICAL WHICH
ACT AS A STRONG OXIDIZING
AGENT.
FENTO
N
HOMOGENOUS
CLASSICAL
FENTON
FENTON Fe-
COMPLEX BASED
HETEROGENOUS
o SiO2 FUNCTIONALIZATION WITH
ORGANIC LINKERS
o POLYSTYRENE RESINS POPULAR IN
PEPTIDE SYNTHESIS AND LIGAND
ANCHORING
o METAL-ORGANIC FRAMEWORK CAN
PROVIDE HIGH SURFACE ARE
o CARBON NANOTUBE CAN ALSO
USED AS A SOLID SUPPORT