4.4 Bioremediation Methods

61

Table 4.5

Application of integrated approaches for textile dye wastewater treatment.

Sl. no. Method

Wastewater

Results

References

1.

Combined

radiation and

biological

treatment

Reactive red-120

dye

The gamma radiation treatment of

textile dye significantly decreased

the concentration of RR-120 before

the start of the microbial treatment

(Pseudomonas sp. SUK1) and the

radiation-induced fragmented

products showed a variety of enzyme

activities

[28]

2.

Combined

biological and

advanced

oxidation

treatment

Composite

wastewater

samples were

collected from

inlet of sewage

treatment plant

Integration of advanced oxidation

processes with activated sludge

process yielded 98% and 100%

chemical oxygen demand (COD)

and color removal

[29]

3.

Combined

sub-filtration and

biological process

Dyeing and

printing

wastewaters

The wastewater is first treated by a

biological process, and then the

sub-filter method is used. The

average turbidity, color, and COD

reach 90.9%, 92.5%, and 91%,

respectively

[30]

4.

Combined

biological and

photocatalytic

process

Azo dye (Reactive

Black 5)

The photocatalytic process was used

as a posttreatment for biological dye

degradation. The combined process

was more effective than the

photocatalytic and biological process

only in aromatic byproduct

remediation

[31]

5.

Combined

ozonation and

anaerobic

treatment

Synthetic

wastewater

prepared using

Reactive Black 5

The combined process has achieved

a 90% reduction of the total COD

and 84% of the total organic carbon

(TOC) in the dye wastewater

[32]

6.

Combined

chemical and

biological process

Textile reactive

azo dye

The integrated biological processes

(Clostridium oleophila) and Fenton’s

reagent-yeast has decolorized 91% of

Reactive Black 5 dye with an initial

concentration of 500 mg/l

[33]

7.

e-Beam

irradiation and

activated sludge

system

Textiles effluent

The radiation treatment destroyed

the molecular structure of organic

compounds and converted them into

biodegradable compounds. Thus,

the degradation of dye become

easier in biological reaction

[34]

8.

Integrated

biological biofilm

and ozonation

Remazol Black B

The ozonation process is used as a

pretreatment for dye degradation.

Under the condition of 500 mg/l of

Remazol Black B dye and a pH of

3–11, a dye removal rate of about

96% can be achieved

[35]