Properties of coir
According to TAPPI (1988), coconut fiber and organic matter can be re-used. The pH of coir is 5.5. quality
quantity of coconut fiber is not affected if the pH is lower. Coir has a number of properties and the
following chemical composition:
The C: N of 80: 1.
10-12% porosity.
Organic matter: 9.4 to 9.8%.
The total ash content: 3-6%.
Cellulose: 20-30%.
Lignin: 60-70%
Tannins: 8.0 to 8.5% (which are not hydrolyzed pyrocatechic-tannin).
EC (dS / m) 0.8.
N% 0.5.
P% 0.3.
K% 0.4.
cellulose in coconut fiber
Essential components of coconut fiber is cellulose (about 80%) and lignin (about 18%)
(Cellulose), [C
6
H
7
O
2
(OH)
3
]
n
. The cellulose molecules are unbranched chains, with
together to create a solid structure, high intensity stretch. Collection of molecules into the
micro fiber can be arranged along the vessel wall, a straight horizontal or primitive cell membranes. Molecules
cellulose are composed of several thousand units b - D - glucose connected by link b - 1.4 -
glucoside. Cotton is a natural fiber cellulose purest (90%); larch, cypress (coniferous)
approximately 50% cellulose, about 80% coconut fiber cellulose.
Cellulose does not dissolve in organic solvents, in the lye water and inorganic acids
diluted. Only cellulose dissolved in hydrochloric acid and phosphoric acid characteristics, dissolved in H
2
SO
4
and in a
some solution of quaternary organic bases. Susceptible cellulose hydrolysis by acids, and fish products
distribution is xenlodextrin, xenlobiozo and glucose .. [2]
II.4 / processing methods as adsorbent (VLHP)
a) Treatment of activated carbon to VLHP
Activated carbon is a form of carbon composed mainly of carbon, characteristic honeycomb structure
referendum. With this structure, the surface area of activated carbon is very large, reaching 600 - 1500m
2
/ g (parts
depending on the quality of coal)
Activated carbon is mainly prepared by pyrolysis
carbon-containing raw materials at temperatures less than 1000
0
C.
Activated carbon is the adsorbent quarter and flexible, are used
widely for many purposes such as removing color, odor, taste not
desired and organic contaminants, inorganic wastewater
and industrial activity, recovered solvents, cleaning
air, in the air pollution control of industrial emissions
and engine emissions, in many cleaning chemicals, pharmaceuticals
products, food products and a variety of applications in the gas phase.
The examined material: coconut fiber, rice husk, bamboo, jute, bagasse
Sugarcane is composed mainly of cellulose (coir, jute, bagasse
cane) and semi-cellulose (hemicellulose, husk). Themselves on the material contained capillary system
Managing large size in the range 10 - 50 micron. Except husk material inorganic concentrations
(ash) quite large (12%), other materials have the advantages of low ash used as raw
materials made of activated carbon. Three materials were selected to study the husk, bamboo and coir.
[3]
Activated carbon prepared from rice husk is done in three methods: pyrolysis (chemical coal)
in anaerobic conditions, coal chemical and simultaneously activated with soda and phosphoric acid
Activated carbon made from coconut fiber to achieve adsorption on par with commercial coal
Outstanding when activated with phosphoric acid in easier conditions (low temperature,
short time, low levels of chemicals [3]
Pros: good adsorbent, simple manufacturing methods, inexpensive materials, the specific surface
large
Cons: only physical adsorption is the appropriate diameter hole diameter pad.
Activator complex conditions,
b) Modified Handling as VLHP
Denaturation process is the chemical used to process materials which contain molecular structure
A large number of functional groups that, in order to form new links, new functional groups or
the empty slot, ... can be used to adsorb some substances and heavy metals.
With the main component is about 80% cellulose, coir is a suitable material for
be modified to become a good adsorbent, the world and in some countries have
Scientific studies modified some materials are agricultural products such as coir, bagasse
sugarcane, rice husk ... adsorbent for environmental remediation. The research team at the Institute for Chemistry, Institute
science and technology India VLHP survey and made from bagasse treated with citric acid to
split type Cr (VI) in aqueous solution. The results obtained showed variations tinhbang bagasse citric acid
can be almost completely adsorbed Cr (VI) adsorption efficiency is 98% at pH = 2, shaking speed 50
r / min and the concentration of 2000ppm [4]
Some researchers in Brazil have created the VLHP from bagasse treated with succinic anhydride
Cu ions to adsorb
2+
, Cd
2+
, Pb
2+
in aqueous solution. The maximum adsorption capacity for
Cu
2+
, Cd
2+
, Pb
2+
respectively 62mg / g and 106mg / g and 122mg / g. [5]
In Vietnam, there have been studies VLHP made from coir and husk with citric acid to
adsorption of toxic heavy metals such as Cu, Pb, Ni, Cd, As, Hg. These metals are related
directly to the GMO, cancer and serious impact on the environment [6]. The
Survey results show that two types of agricultural residues and coir husk is capable of adsorption / exchange
Ni ion exchange
2+
and Cd
2+
with high efficiency (50-60% for coconut fiber and 40-45% for rice husk)
Pros: simple method of implementation, can adsorb some heavy metals through
through functional groups,
Cons: not high adsorption performance.
opinion
From the advantages of the modified method can be realized as a method modified
use appropriate methods for handling toxic heavy metals, which saves costs but still provide
high-performance processors. Most are in the process of textile dyeing wastewater treatment and metal concentrations
and highly complex.
According to TAPPI (1988), coconut fiber and organic matter can be re-used. The pH of coir is 5.5. quality
quantity of coconut fiber is not affected if the pH is lower. Coir has a number of properties and the
following chemical composition:
The C: N of 80: 1.
10-12% porosity.
Organic matter: 9.4 to 9.8%.
The total ash content: 3-6%.
Cellulose: 20-30%.
Lignin: 60-70%
Tannins: 8.0 to 8.5% (which are not hydrolyzed pyrocatechic-tannin).
EC (dS / m) 0.8.
N% 0.5.
P% 0.3.
K% 0.4.
cellulose in coconut fiber
Essential components of coconut fiber is cellulose (about 80%) and lignin (about 18%)
(Cellulose), [C
6
H
7
O
2
(OH)
3
]
n
. The cellulose molecules are unbranched chains, with
together to create a solid structure, high intensity stretch. Collection of molecules into the
micro fiber can be arranged along the vessel wall, a straight horizontal or primitive cell membranes. Molecules
cellulose are composed of several thousand units b - D - glucose connected by link b - 1.4 -
glucoside. Cotton is a natural fiber cellulose purest (90%); larch, cypress (coniferous)
approximately 50% cellulose, about 80% coconut fiber cellulose.
Cellulose does not dissolve in organic solvents, in the lye water and inorganic acids
diluted. Only cellulose dissolved in hydrochloric acid and phosphoric acid characteristics, dissolved in H
2
SO
4
and in a
some solution of quaternary organic bases. Susceptible cellulose hydrolysis by acids, and fish products
distribution is xenlodextrin, xenlobiozo and glucose .. [2]
II.4 / processing methods as adsorbent (VLHP)
a) Treatment of activated carbon to VLHP
Activated carbon is a form of carbon composed mainly of carbon, characteristic honeycomb structure
referendum. With this structure, the surface area of activated carbon is very large, reaching 600 - 1500m
2
/ g (parts
depending on the quality of coal)
Activated carbon is mainly prepared by pyrolysis
carbon-containing raw materials at temperatures less than 1000
0
C.
Activated carbon is the adsorbent quarter and flexible, are used
widely for many purposes such as removing color, odor, taste not
desired and organic contaminants, inorganic wastewater
and industrial activity, recovered solvents, cleaning
air, in the air pollution control of industrial emissions
and engine emissions, in many cleaning chemicals, pharmaceuticals
products, food products and a variety of applications in the gas phase.
The examined material: coconut fiber, rice husk, bamboo, jute, bagasse
Sugarcane is composed mainly of cellulose (coir, jute, bagasse
cane) and semi-cellulose (hemicellulose, husk). Themselves on the material contained capillary system
Managing large size in the range 10 - 50 micron. Except husk material inorganic concentrations
(ash) quite large (12%), other materials have the advantages of low ash used as raw
materials made of activated carbon. Three materials were selected to study the husk, bamboo and coir.
[3]
Activated carbon prepared from rice husk is done in three methods: pyrolysis (chemical coal)
in anaerobic conditions, coal chemical and simultaneously activated with soda and phosphoric acid
Activated carbon made from coconut fiber to achieve adsorption on par with commercial coal
Outstanding when activated with phosphoric acid in easier conditions (low temperature,
short time, low levels of chemicals [3]
Pros: good adsorbent, simple manufacturing methods, inexpensive materials, the specific surface
large
Cons: only physical adsorption is the appropriate diameter hole diameter pad.
Activator complex conditions,
b) Modified Handling as VLHP
Denaturation process is the chemical used to process materials which contain molecular structure
A large number of functional groups that, in order to form new links, new functional groups or
the empty slot, ... can be used to adsorb some substances and heavy metals.
With the main component is about 80% cellulose, coir is a suitable material for
be modified to become a good adsorbent, the world and in some countries have
Scientific studies modified some materials are agricultural products such as coir, bagasse
sugarcane, rice husk ... adsorbent for environmental remediation. The research team at the Institute for Chemistry, Institute
science and technology India VLHP survey and made from bagasse treated with citric acid to
split type Cr (VI) in aqueous solution. The results obtained showed variations tinhbang bagasse citric acid
can be almost completely adsorbed Cr (VI) adsorption efficiency is 98% at pH = 2, shaking speed 50
r / min and the concentration of 2000ppm [4]
Some researchers in Brazil have created the VLHP from bagasse treated with succinic anhydride
Cu ions to adsorb
2+
, Cd
2+
, Pb
2+
in aqueous solution. The maximum adsorption capacity for
Cu
2+
, Cd
2+
, Pb
2+
respectively 62mg / g and 106mg / g and 122mg / g. [5]
In Vietnam, there have been studies VLHP made from coir and husk with citric acid to
adsorption of toxic heavy metals such as Cu, Pb, Ni, Cd, As, Hg. These metals are related
directly to the GMO, cancer and serious impact on the environment [6]. The
Survey results show that two types of agricultural residues and coir husk is capable of adsorption / exchange
Ni ion exchange
2+
and Cd
2+
with high efficiency (50-60% for coconut fiber and 40-45% for rice husk)
Pros: simple method of implementation, can adsorb some heavy metals through
through functional groups,
Cons: not high adsorption performance.
opinion
From the advantages of the modified method can be realized as a method modified
use appropriate methods for handling toxic heavy metals, which saves costs but still provide
high-performance processors. Most are in the process of textile dyeing wastewater treatment and metal concentrations
and highly complex.
Coconut fibre Specification
- Length :10 to 25 cm
- Moisture :Less than 15%
- Impurities :Less than 3% (husk dust)
- Knots/ Shells :Less than 2%
- Color :Brown / white
- Packing :110kg or 120 Kg Strapped Bales