PPT Nurjanah, F1C117023,Graphene Modified Tannin From Gamal Leaf For Lead Adsorption

Proposal Research
Graphene Modified Tannin From Gamal Leaf
For Lead Adsorption
Present By:
NURJANAH (F1C117023)
Supervisor:
La Ode Ahmad, S.Si., M.Si., Ph.D.
DEPARTEMENT OF CHEMISTRY
FACULTY OF MATHEMATICS AND NATURAL SCIENCE
UNIVERSITY HALU OLEO
2019
Table of
Content
01
Introduction
02
Research Question
03
Literature Study
04
State of The Art
01 Introduction
Mining activities are a significant contributor to liquid waste. Gross
Domestic Product produced from the mining and quarrying sector
amounted to 167.7 trillion in 2000 and increased to 1,028.8 trillion in
2017.
waste continues to be a national to
international problems
Disposal of waste into water bodies without being processed first
Heavy metal which is one of the dangerous and toxic
materials (B3) is lead (Pb).
High Pb metal levels in the human body, will cause
negative effects:
inhibits enzyme activity
01
causes chromosomal (gen) abnormalities
03
02
reduce female fertility
inhibits the formation of
hemoglobin
05
04
cause kidney damage
Lead levels allowed in the water consumed by the
community are 0.005 ppm (SNI 01-3553-2006).
Currently the use of plant secondary metabolites
is being promoted as a heavy metal adsorbent
This method is quite promising considering the
low price, good adsorption ability, easily
regenerated and safe for the environment
One of the secondary metabolites of plants as
heavy metal sorbents is tannin
However, tannins have several drawbacks and
which are easily soluble in water, easily damaged
due to decomposition by micro-organisms
Thus, many research approaches on strengthening
tannins have been carried out like the methods of
immobilization and polymerization
Tannin compounds can be found in the
leaves of Gliricidia sepium (gamal)
Graphene is extraordinary like a large surface
area, high absorption capacity, and good
chemical and thermal stability.
Research on graphen has recently emerged as
an attractive adsorbent for removing heavy
metal ions
Unlike carbon nanotubes, both sides of the planar grapen
sheet are available for molecular adsorption
Graphene also offers extraordinary support for oxygen-containing
functional groups such as hydroxyl.
Then carried out research on Modified Tanin
Graphene as Lead Metal Adsorption
02
Research Question
01
How do you make graphen as a
tannin modified adsorbent for
Pb metal adsorption?
02
What are the characteristics of
graphen as a tannin modified
adsorbent for Pb metal adsorption?
03
What is the adsorption power of
graphen after modified tannin as an
adsorbent material for Pb metal?
03
Literature Study
Graphene
The graphene structure
is carbon nanomaterial
with a single layer of
hybridization sp2 carbon
atom arranged in a sixmembered ring with a
theoretical specific
surface area value of
2630 m2 / g
(Nupearachchi et al.,
2017).
Tannins
Lead Metal
Judging from its structure,
tannin has a large enough
potential to be used as an
adsorbent because the
bound -OH group can
interact with the adsorbate
component (Ana dan
Sukandar, 2017)
Lead is one of the toxic
heavy metals found in
industrial wastewater. Entry
of heavy metal
environments through
mining, smelting, battery
manufacturing, and
metallurgical industrial
processes and from
batteries, paints, ceramics,
lead bleaching etc
(Francisco dkk., 2018).
Biosorption
Biosorption is the
phenomenon of rapid
passive metal absorption by
biomass/adsorbent. Has
several advantages
compared to conventional
techniques namely: low cost,
high efficiency (Alexander
dkk., 2018).
04
State of The Art
Nukaromah dan Sukandar
Sanjaya dan Richzy
Study of Pb Adsorption Kinetics Using Active Charcoal
from Banana Skin
• The advantage of charcoal Active banana peel is this
ingredient composed especially from carbon, has
porosity and high inner surface area so it fits used in the
separation of heavy metals in waste liquid
• But the use of banana peels as Heavy metal
adsorbents also have disadvantages effectiveness metal
is not too high, and adsorbent this belongs to the type of
adsorbent that does not can be regenerated
Modification Of Tannes From The Akasia
Leaves Biomass (Acacia Mangium Wild) By
How To Polymerization As A Biosorben For
Metal Pb (II)
Chen et al.
Graphene Modified Tannin
From Gamal Leaf For
Lead Adsorption
In the performance test of three BTP
biosorbents, BDP and BEP obtained efficiency
of 85.58%, 80.35% and 66.43%, with BTP
adsorption capacity of 1.265 mg/g, BDP of
0.950 mg/g and BEP in the amount of 0.982
mg/g.
2016
2015
Nurjanah
2018
2017
Adsorption of heavy metals by graphene oxide/cellulose
hydrogel prepared from NaOH/Urea aqueous solution.
Competitive adsorption affinities were in the order of Pb
(II) > Cu(II) ≫ Cd(II) > Zn(II).
An adsorption capacity of 94 mg/g was achieved by GO/
cellulose hydrogel
Guo et al
2019
Efficient removal of aqueous Pb(II) using partially
reduced graphene oxide-Fe3O4
PRGO-Fe3O4 exhibit excellent adsorption
property toward aqueous Pb(II), as well as efficient
separation from water: Adsorption
equilibrium was reached in 10 min with the adsorption
percent and quantity of 95.77% and 373.14 mg.g-1
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