ISSN: 0974 – 3987
IJBST (2009), 2(4):47-51
Removal of Dyes from Wastewater using Adsorption
- A Review
Sivamani S, Leena Grace B
Department of Biotechnology, School of Biochemical Engineering, VMKV Engineering College, Vinayaka Missions University, Salem, INDIA
dr_sivamani@rediffmail.com
ABSTRACT:
The adsorption process is being extensively used for the removal of dyes from synthetic dyehouse effluents by various researchers.
The most widely used adsorbent is commercially available activated carbon. Despite the frequent use of adsorption in wastewater
treatment systems, commercially available activated carbon remains an expensive material. In recent years, the safe and economical
methods are required for the treatment of dyehouse effluents, which involved researchers to focus towards the preparation of low
cost adsorbents from cheapest sources. Therefore, in this review article, the different cheapest sources of preparing adsorbent are
discussed and their feasibility in treating dyehouse effluents is studied.
INTRODUCTION
Physical method of treating adsorbent involves
activation by heating in an oven. Chemical method of
treating adsorbent involves activation by adding acid
or alkali.
Dyeing industry is one of the largest water consuming
industries. The effluent coming out of the dyeing
industries contains various chemicals and colouring
compounds and the effluent requires proper treatment
before it is discharged into any water body. But, the
dyehouse effluents are very difficult to treat
satisfactorily because they are highly variable in
composition [1].
Since the addition of inorganic acids make the method
polluted and expensive, recently, researchers started to
use organic acids for the acid treatment of adsorbents.
Sometimes, combination of both methods may also be
used.
In most situations, the use of a combination of
different methods of treatment is necessary in order to
remove all the contaminants present in the wastewater
[2, 3 and 4]. Therefore, adsorption became one of the
most effective methods to remove colour from textile
wastewater [5, 6 and 7].
Cost is an important factor for comparing the
feasibility of adsorbents in treating dyehouse effluents.
However, in any report, cost analysis is not stated and
the expense of adsorbents varies depending on the
method of processing and availability of source
materials.
Despite the frequent use of adsorption in wastewater
treatment systems, commercially available activated
carbon remains an expensive material.
In general, an adsorbent is said to be low cost if it
requires little processing, abundant in nature with high
adsorption capacity [22].
The cheapest sources of preparing adsorbents include
sewage treatment plant biosolids (sludge) [8],
magnetically modified brewer’s yeast [9], cassava peel
activated carbon [10], tapioca peel activated carbon
[11], soil [12], fly ash [12, 18], jack fruit peel activated
carbon [13, 17], groundnut shell activated carbon
activated with Zinc chloride solution [14], neem leaf
powder [15], kaolinite [16], montmorillonite [16],
hazelnut activated carbon [16], bagasse pith [19],
natural clay [19], maize cob [19], rice bran based
activated carbon [20], guava seeds activated with Zinc
chloride solution followed by pyrolysis [21] etc.
The objective of this study is to contribute in the
search for low cost adsorbents and their utilization
possibilities to remove dyes from synthetic dyehouse
effluents.
LITERATURE
Reviews on low cost adsorbents for the removal of
dyes from wastewater are presented as follows.
Fly ash
Fly ash is a residue that results from the combustion of
coal in thermal power plants. The major components of
fly ash are alumina, silica, iron oxide, calcium oxide,
magnesium oxide and residual carbon.
They are used for the removal of dyes from synthetic
dyehouse effluents by various researchers. The two
methods of processing adsorbents are physical and
chemical methods.
International Journal of BioSciences and Technology (2009), Volume 2, Issue 4, Page(s):47-51
47
ISSN: 0974 – 3987
IJBST (2009), 2(4):47-51
Batch mode adsorption experiments are carried out, by
varying contact time, initial dye concentration, initial
adsorbent dosage, agitation rate, temperature and pH.
The results revealed that the adsorption capacity of
basic dyes was higher (22-24 mg/g) with the lower
values of the temperature (25-30°C), adsorbent dosage
(0.5-0.75% w/v), higher values of the initial pH (8-9)
and agitation rate (150-200 rpm). The equilibrium in
the solution was observed within 2 h of operation.
One of the main advantages of fly ash over the other
adsorbents is that it is in abundance and easily
available to make it a strong choice in the investigation
of an economic way of dye removal. Other advantage
is that it could easily be solidified after the pollutants
are adsorbed because it contains pozzolanic particles
that react with lime in the presence of water to form
cementation calcium-silicate hydrates [12].
The fly ash adsorbent was prepared for the adsorption
process by the following procedure [23]: The fly ash
sample was received from nearby thermal power plant
and then washed with distilled water to remove surface
dust and was dried in sun. Fly ash samples were stored
in the laboratory in airtight plastic container. The fly
ash adsorbent was characterised using standard
procedures to determine the physical and
physicochemical parameters.
The magnetically modified Saccharomyces cerevisiae
subsp. uvarum cells was studied as adsorbent in
removing water soluble dyes, Aniline blue, Congo red,
Crystal violet, Naphthol blue black and Safranine – O
from aqueous solutions [9].
The results revealed that the maximum adsorption
capacity of the magnetic cells differed substantially for
individual dyes; the highest value was found for
aniline blue, 220 mg/g. The dyes removal by activated
carbon prepared from cassava (Manihot esculenta)
peel was studied [10]. Cassava peel is an agricultural
waste from the food processing industry.
After analysis, the fly ash adsorbent is found to contain
60.10% SiO2, 18.60% Al2O3, 6.40% Fe2O3, 6.30%
CaO, 3.60% MgO. The values of surface area, porosity,
and bulk density of the adsorbent are 40.16 m2/g, 0.43
and 3.51 g/cm3 respectively. However, the constituents
of fly ash vary according to the type of coal used and
degree of combustion.
Activated carbons prepared from waste cassava peel
employing physical and chemical methods were tested
for their efficiency in the removal of dyes and metal
ions from aqueous solution. They have reported that
the material impregnated with H3PO4 showed higher
efficiency than the heat treated materials while both of
these were efficient as adsorbents for dyes and metal
ions. The removal of a basic dye, Rhodamine – B, by
using tapioca peel activated carbon as an adsorbent
was also studied [11].
The fly ash adsorbent was used for the removal of
various dyes like Methylene blue, Malachite green and
Rhodamine – B, from aqueous solutions [12]. The high
colour removal percentages are 93%, 89% and 77% for
the dyes, Methylene blue, Malachite green and
Rhodamine – B, respectively.
The adsorption on dyes, Malachite green and
Methylene blue was studied on two different samples
of fly ash, fly ash I and II [18]. They have concluded
that the maximum color removal was attained with fly
ash containing high carbon content.
The soil was used as adsorbent for removal of dyes,
Methylene blue, Malachite green and Rhodamine – B,
from aqueous solutions [12]. At optimal conditions, the
colour removal percentages are 89.18%, 83.20% and
71.56% for the dyes, Methylene blue, Malachite green
and Rhodamine – B, respectively.
Bagasse Pith
Bagasse pith is a waste product produced from sugar
refining industry. It is the name given to the residual
cane pulp remaining after sugar has been extracted.
Bagasse pith is composed largely of cellulose,
pentosan and lignin [24].
The jack fruit peel activated carbon was used as
adsorbent in removing a basic dye, Rhodamine – B,
from aqueous solution [13]. Batch mode adsorption
experiments are carried out, by varying initial dye
concentration, initial adsorbent dosage, and pH.
The research was carried out on adsorption of dyes,
Astrazone blue, Maxillon red and Telon blue using
bagasse pith [19]. Based on cost analysis, they showed
that the bagasse pith is economically attractive than
commercially available activated carbon.
The results revealed that the optimal adsorption
capacity of the basic dye was 121.47 mg/g, adsorbent
dosage (1.2 g/L), and the influence of pH on dye
removal was not significant. The maximum colour
removal percentage achieved was 96%.
Other low cost adsorbents
The sewage treatment plant biosolids (sludge) was
used as adsorbent in removing basic dyes, Basic blue 3,
Basic red 22 and Basic black 9 from aqueous solutions
[8].
The jack fruit peel activated carbon was also used as
adsorbent in removing a dye, Malachite green, from
aqueous solution [17].
Batch mode adsorption
experiments are carried out by varying initial dye
concentration, temperature and pH. They reported that
the maximum adsorption capacity attained was 166.37
mg/g at an initial pH of 6.0 and at 32 ± 0.5°C.
International Journal of BioSciences and Technology (2009), Volume 2, Issue 4, Page(s):47-51
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ISSN: 0974 – 3987
IJBST (2009), 2(4):47-51
Table 1. Various types of adsorbents for dye removal by adsorption
Percentage removal of dye (%)
Adsorbent
Reference
Acid
blue 16
Acid
red 183
Aniline
blue
Basic
black 9
Basic
blue 3
Basic
red 22
Brilliant
green
Congo
red
Crystal
violet
Malachite
green
Methylene
blue
Rhodamine B
Safranine O
Sewage treatment plant
biosolids
-
-
-
90.1
83.4
86.7
-
-
-
-
-
-
-
[8]
Modified brewer’s yeast
-
-
91.2
-
-
-
-
95.2
83.4
-
-
-
93.2
[9]
Tapioca peel activated
carbon
-
-
-
-
-
-
-
-
-
-
-
85.9
-
[11]
Jack fruit peel activated
carbon
-
-
-
-
-
-
-
-
-
82.6
-
88.2
-
[13 and
17]
82.6
-
-
-
-
-
-
-
-
-
-
-
-
[14]
Neem leaf powder
-
-
-
-
-
-
93.4
87.4
-
-
91.5
-
-
[15]
Kaolinite
-
65.2
-
-
-
-
-
-
-
-
-
-
-
[16]
Montmorillonite
-
72.3
-
-
-
-
-
-
-
-
-
-
-
[16]
Hazelnut activated
carbon
-
81.4
-
-
-
-
-
-
-
-
-
-
-
[16]
Guava seeds activated
carbon
-
-
-
-
-
-
-
-
-
-
76.3
-
-
[21]
Groundnut shell
activated carbon
International Journal of BioSciences and Technology (2009), Volume 2, Issue 4, Page(s):47-51
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ISSN: 0974 – 3987
IJBST (2009), 2(4):47-51
by Activated Sludge Process, In Proceedings of the 37th
Industrial Waste Conference, Purdue University,
Lafayette, Indiana, p.677, 1982.
The removal of acid dyes by using groundnut shell
powder activated by Zinc chloride solution was studied
as an adsorbent [14]. The results revealed that the
maximum adsorption capacity was found to be 55.5
mg/g of the adsorbent for 100 ppm initial
concentration of dye solution.
[4] Shelley, M.L., Randall, C.W. and King, P.H.,
Evaluation of Chemical-Biological and ChemicalPhysical Treatment for Textile Dyeing and Finishing
Waste, Journal WPCF, 4, 753, 1976
The neem leaf powder was used to remove three watersoluble dyes, viz., brilliant green, congo red and
methylene blue from aqueous medium [15]. The
adsorptive interactions were tested under varying
conditions of concentration of the dyes, amount of
adsorbent, pH, and temperature.
[5] McKay, G., Color Removal by Adsorption, American
Dye-stuff Reports, p. 38, 1980
[6] Yeh, R.L., Liu, R., Chiu, H.M. and Hung, Y.T.,
Comparative study of adsorption capacity of various
adsorbents for treating dye wastewaters, Intern. J.
Environmental Studies, Section B: Environmental
Science and Technology, 44, 259, 1993
The removal of acid red 183 from aqueous solution
was studied by activated carbon, raw kaolinite and
montmorillonite using an agitated batch adsorber [16].
The results revealed that the adsorption capacity was
1495, 111, 29 and 19 mg/g for CAC (commercial
activated carbon), HAC (activated carbon obtained
from hazelnut), KC (raw kaolinite) and MC
(montmorillonite) at 250C respectively.
[7] McKay, G. and Al-Duri, B., Comparison of Theory and
Application of Several Mathematics Models to Predict
Kinetics of Single Component Batch Adsorption
Systems, Trans. IChemE., 68 ( Part B), 255, 1990
[8] Md. Zahangir Alam., Biosorption of Basic Dyes Using
Sewage Treatment Plant Biosolids, Biotechnology, 3
(2), 200-204, 2004
Rice bran based activated carbon and guava seeds
activated carbon, followed by pyrolysis were also used
as adsorbents to remove dyes from aqueous solutions
[20 and 21].
[9] Safarikova M., Ptackova L., Kibrikova I., Safarik I.,
Biosorption of water-soluble dyes on magnetically
modified Saccharomyces cerevisiae subsp. uvarum
cells, Chemosphere, 59, 831–835, 2005
The comparative performance study of various
adsorbents for the removal of dye by adsorption was
highlighted in Table 1.
[10] Rajeshwari Sivaraj, Sivakumar S., Senthilkumar P. and
Subburam V, Carbon from Cassava peel, an agricultural
waste, as an adsorbent in the removal of dyes and metal
ions from aqueous solution, Bioresource Technology, 80
(3), 233-235, 2001
CONCLUSION
[11] Prakash Chidambaram and Sivamani Selvaraju,
Adsorption of Rhodamine – B, a basic dye, onto tapioca
peel activated carbon (TPAC), In Proceedings of the 2nd
National Conference on Functional Textiles &
Apparels, PSG College of Technology, Coimbatore,
India, p.7, 2007
A review of various adsorbents presented shows a
good potential for the removal of dyes from
wastewater. The adsorption capacity depends on the
type of adsorbent and the nature of wastewater.
The expensive adsorbents can be replaced by the low
cost adsorbents for the removal of dyes from
wastewater. More research should be carried out to
treat other industrial effluents for the exploration of
low cost adsorbents and to demonstrate the technology
effectively. As presented in table 1, various adsorbents
show a good adsorption capacity for the removal of
dyes.
[12] Ved Vati Singh, Studies on Natural Adsorbents for the
isolation of Industrial Pollutants from Waste water
Samples around Delhi, Department of Chemistry
Thesis, Jamia Millia Islamia University, Delhi, 2006
[13] Stephen Inbaraj B, Sulochana N, Use of jackfruit peel
carbon (JPC) for adsorption of rhodamine-B, a basic
dye from aqueous solution, Indian Journal of Chemical
Technology, 13, 17-23, 2006
[1] Do. J.S. and Chen. M.L., Decolourization of dyecontaining solutions by electrocoagualtion, J. of Appl.
Electrochemistry, 24, 785-790, 1990
[14] Malik R, Ramteke D.S., Wate S.R., Physico-chemical
and surface characterization of adsorbent prepared from
groundnut shell by ZnCl2 activation and its ability to
adsorb colour, Indian Journal of Chemical Technology,
13,319-328, 2006
[2] Hamza, A and Hamoda, M.F., Multiprocess Treatment
of Textile Wastewater, In Proceedings of the 35th
Industrial Waste Conference, Purdue University,
Lafayette, Indiana, p.151, 1980
[15] Arunima Sharma, Krishna G Bhattacharyya, Utilization
of a biosorbent based on Azadirachta indica Neem
leaves for removal of water-soluble dyes, Indian
Journal of Chemical Technology, 12, 285 – 295, 2005
[3] Shaul, G.M., Barnett, M.W. and Dostal, K.A.,
Treatment of Dye and Pigment Processing Wastewater
[16] Haluk Aydın A, Ömer Yavuz, Removal of acid red 183
from aqueous solution using clay and activated carbon,
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International Journal of BioSciences and Technology (2009), Volume 2, Issue 4, Page(s):47-51
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IJBST (2009), 2(4):47-51
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