Fly ash to zeolite synthesis

1. Research Student: Seemab javed
MPhil Analytical Chemistry
ROLL# 32018
2020-GCUF-08667
Synopsis defence by Seemab javed
Department of Chemistry,
Government College University, Faisalabad
Synthesis of coal fly ash based zeolites to investigate their
selected metal purging activity from synthetic wastewater

2. CONTENTS
INTRODUCTION
• Problem statement
• Available strategies and their limitations
• Applications of zeolites for wastewater treatment
• Need for the project
• Aims and objectives
MATERIALS AND METHODS
• Sampling and pretreatment
• Synthesis of zeolites
• Characterization of raw and synthesized material
• Metals purging by zeolites from wastewater
• Statistical analysis
REFERENCES

3. INTRODUCTION
Problem Statement 1
Water is the major abundant natural resource of ecosystem
Industrialization, agricultural development and rapid
urbanization are causing serious pollution especially on
water resources
Industrial effluents contains heavy load of hazardous pollutants including
heavy metals/ions/salts, dyes, oil and other organic and inorganic
toxicants
Industrial effluents contains heavy load of hazardous pollutants including
heavy metals/ions/salts, dyes, oil and other organic and inorganic toxicants
Heavy metals (Zinc, Lead and Chromium), are the major source of water
pollution
To find an effective technique, is a prerequisite, for removal of heavy
metals from wastewater (Al-Zboon et al., 2011), (Liu et al., 2014)

4. INTRODUCTION
Problem Statement 2
Thermal power generation, cement industries, brick kilns, and as
chemicals for fertilizer and metallurgical production use coal
primarily
Coal-based thermal power plants have been emitting an alarming
amount of coal fly ash, harmful anthropogenic material
Harmful for plants, corrodes the exposed Metals
Coal fly ash components increases a persons risk of developing
cancer and other respiratory diseases
To find an effective technique, is also a prerequisite, to
manage increasing coal fly ash
(Sharma et al., 2018)

5. INTRODUCTION
The conventional treatment
methods
Biological methods
Chemical coagulation
Flocculation
Membrane Nano filtration
Some drawbacks of conventional
methods
Ineffectiveness & Time
consumption
Complex procedure & Toxic by-
product
High sludge formation & Time
consumption
High capital and Operational
cost
Available Strategies and their Limitations
(Sujitra et al., 2016)

6. INTRODUCTION
Heterogeneous material
SiO2, Al2O3 ,Fe2O3 , CaO,
As, Be, Cd, Cr, Co,Hg, Mo,
Se, Sr
FA waste is composed of Si
and Al as major components
Effective as raw material for
zeolite formation
Fly ash
Alumino-silicates with
exchangeable cations
Si to Al ratio can vary in
zeolites from 1 to infinity
Chemically and thermally
stable materials
have micro-pores of entry &
pore size varies from 3 to
12Ao
Zeolites
Synthesis of fly ash based
zeolites
(Yao et al., 2015)
(Blissett and Rowson, 2012

7. Metals purging using synthetic zeolites, employed for synthetic
wastewater treatment
Fly ash zeolites have negatively charged surfaces which is used
as sorbents to remove positively charged contaminants, such as
toxic metal ions, from water
Zeolites possess excellent ion exchange properties with metal.
Batch method is employed, using initial metal concentrations in
solution
The adsorption ratios of zeolite towards metal cations match the
Langmuir and Freundlich isotherms.
INTRODUCTIO
Metals Purging by Zeolites
(Peng et al., 2017).

8. Keeping in view the structural and compositional versatility of zeolites and
applications in wastewater treatment, it is very logical and reasonable approach to
develop some zeolite materials for wastewater treatment
The increase in surface area and synergetic impact of zeolite is expected to work as
energy efficient material for wastewater treatment
Therefore, this project “Synthesis of coal fly ash based zeolites to
investigate their metal purging activity from synthetic
wastewater” has been designed with the following objectives
INTRODUCTION
Need for the Project

9. To synthesize the coal fly ash based zeolites using alkaline techniques
To characterize the raw fly ash and synthesized materials using different analytical
techniques (XRD, FTIR spectroscopy, SEM and ICP-OES)
To Investigate the metal purging activity by zeolites for wastewater treatment
INTRODUCTION
Aims and objectives

10. Sampling of
CFA
Synthesis
of zeolites
Hydrother
mal
Alkaline-
fusion
assisted HT
Fly ash
based
zeolites
Characterization
Applications
(wastewater
treatment)
Statistical
analysis
Materials and Methods

11. Coal fly ash samples
Coal fly ash samples will be procured as raw
aluminosilicate source from Electrostatic
Precipitator (ESP) of the boiler plants from different
industries in Faisalabad, Pakistan by Striated
Random Sampling approach
Sample will be powdered and sieved under dry
conditions using 80 mesh size sieve to eliminate
coarser particles
Materials and Methods
Sampling and Pretreatment

12. • Alkaline mixture
• Hydrothermal treatment
• Aluminosilicate gel formation
• Crystallization
Conventional
hydrothermal treatment
• Alkaline mixture
• Alkaline fusion treatment
• Hydrothermal treatment
• Aluminosilicate amorphous gel
• crystallization
fusion assisted
hydrothermal treatment
Materials and Methods
Synthesis of Zeolites
(Elavarasan et al., 2019).

13. FTIR
• Surface
chemistry
• functionality
SEM
• Surface
morphology
XRD
• Mineralogical
composition
• crystallinity
ICP-OES
• Leach ability of
metals
Materials and Methods
Characterization of raw FA and Synthesized Materials
(Ren et al., 2019).

14. Materials and Methods
Metals purging by zeolites from wastewater
pH
Mass of
adsorbent
(Zeolites)
Contact Time
Initial metal
concentration
In batch experiments To
evaluate the essential
parameters like
sorption experiments To determine zeolites'
efficiency in cleaning synthetic wastewater will be
conducted at room temperature with known initial
metal concentration
Zeolites can sorb metals and can remove them
efficiently according to Equations
Adsorption capacity (qe) =
Co−Ce
W
× V
Removal efficiency (%) =
Co−Ce
C0
× 100
The adsorbed metals will be desorbed and
recovery of zeolites will be carried by the
use of different eluting reagents
Recovery (%) =
Cd
Ca
× 100
(Moyo et al., 2013).

15. Materials and Methods
Statistical analysis
The response surface methodology (RSM)
will be applied to optimize variables
All the analytical experiments will be
performed in three replicates
Data will be presented as M±SD.
The data obtained will be analyzed using
appropriate computer based statistical
package
(Vesna et al., 2014)

16. References
1. Ojha, K., Pradhan, N. C. & Samanta, A. N. (2004). Zeolite from fly ash: synthesis and
characterization. Bulletin of Materials Science. 27(6): 555-564.
2. Adinehvand, J., Rad, A. S. & Tehrani, A. S. (2016). Acid-treated zeolite (clinoptilolite) and its potential to zinc
removal from water sample. International journal of environmental science and technology. 13(11): 2705-2712
3. Adriano, D. C., Page, A. L., Elseewi, A. A., Chang, A. C. & Straughan, I. (1980). Utilization and disposal of fly ash
and other coal residues in terrestrial ecosystems: a review. Journal of Environmental quality. 9(3): 333-344.
4. Wang, S. & Wu, H. (2006). Environmental-benign utilization of fly ash as low-cost adsorbents. Journal of
hazardous materials. 136(3): 482-501.
5. Ke, G., Shen, H. & Yang, P. (2019). Synthesis of X-Zeolite from waste basalt powder and its influencing factors
and synthesis mechanism. Materials. 12(23): 38-95.
6. Koshy, N. & Singh, D. N. (2016). Fly ash zeolites for water treatment applications. Journal of Environmental
Chemical Engineering. 4(2): 1460-1472.

17. THANK YOU
For your precious time and attentions