Sustainable Approach on the Treatment of Textile Wastewater …
95
8 Membrane Fouling
Membrane fouling is a term in which the solution or particle settles on the surface of
the membrane or the membrane pores in the process such as in membrane bioreactor
so that the performance of the membrane is degraded. Membrane fouling causes a
downfall in flux and it in turn transforms the quality of the water produced. Severe
fouling requires chemical cleaning or replacement of the membrane. Fouling can be
classified as reversible and irreversible fouling. Reversible fouling can be expelled
by strong shear force or backwashing. Physical cleaning does not prove effective in
eliminating irreversible fouling. Fouling can be controlled by air scour, relaxation,
by the addition of adsorbent or coagulant and by mechanical cleaning.
9 Application of Membrane for the Removal of Dye
The PI-based membrane displayed a dismissal of 98.65% against the Direct Red
23 color with a concentration of 100 ppm at 0.1 MPa. Consequently, this PI-based
UF film is profoundly advantageous and served as a powerful material for color
expulsion from wastewater released by the textile industry [48]. The expulsion of
Alizarin red-S was examined by filtration methodology in which AT1-500 membrane
was employed for the purpose of expulsion of the dye [49]. The filtration execution of
bentonite layer was assessed by unrelated filtration of Direct Red 80 and Rhodamine
B at 4 bar pressure. The impact of initial concentration and time for filtration was
observed and it demonstrated the dismissal of Direct Red 80 and Rhodamine B
could accomplish an estimation of 97.0 and 80.1% individually [50]. CHI upgraded
ultrafiltration accomplished within the sight of CHI demonstrated that the rate of
retention expanded upto 86% for methyl orange and 89% for Direct Blue 71 [51].
The conduct of a polyvinyl chloride hollow fiber ultrafiltration membrane for the
expulsion of methyl green dye from hydrous solution was assessed by examining the
impact of fluctuating the activity conditions like the flow rate and initial concentration
to decide upon the effect of separation processes at constant pressure and temperature
[52]. Ultrafiltration membranes were prepared from natural Moroccan clays. The
acquired membrane films were subjected to digressive filtration of Direct Red 80
dye solution having a concentration of 50 ppm under tension of 3 bar. Test results
show that color dismissal could accomplish an estimation of 99 and 97% individually
for the clays [53]. Ceramic membrane employed for ultrafiltration was utilized to
remove Reactive Black 5 dye has a wide range of initial concentrations from 50
to 500 mg/L [54]. Methyl green dye was expelled by adopting hybrid adsorptionmembrane technique in which a mesoporous material MCM-41 was utilized as an
adsorbent which in turn was combined with ultrafiltration technique and the rejection
coefficient was determined to be 94.79% [55].
95
8 Membrane Fouling
Membrane fouling is a term in which the solution or particle settles on the surface of
the membrane or the membrane pores in the process such as in membrane bioreactor
so that the performance of the membrane is degraded. Membrane fouling causes a
downfall in flux and it in turn transforms the quality of the water produced. Severe
fouling requires chemical cleaning or replacement of the membrane. Fouling can be
classified as reversible and irreversible fouling. Reversible fouling can be expelled
by strong shear force or backwashing. Physical cleaning does not prove effective in
eliminating irreversible fouling. Fouling can be controlled by air scour, relaxation,
by the addition of adsorbent or coagulant and by mechanical cleaning.
9 Application of Membrane for the Removal of Dye
The PI-based membrane displayed a dismissal of 98.65% against the Direct Red
23 color with a concentration of 100 ppm at 0.1 MPa. Consequently, this PI-based
UF film is profoundly advantageous and served as a powerful material for color
expulsion from wastewater released by the textile industry [48]. The expulsion of
Alizarin red-S was examined by filtration methodology in which AT1-500 membrane
was employed for the purpose of expulsion of the dye [49]. The filtration execution of
bentonite layer was assessed by unrelated filtration of Direct Red 80 and Rhodamine
B at 4 bar pressure. The impact of initial concentration and time for filtration was
observed and it demonstrated the dismissal of Direct Red 80 and Rhodamine B
could accomplish an estimation of 97.0 and 80.1% individually [50]. CHI upgraded
ultrafiltration accomplished within the sight of CHI demonstrated that the rate of
retention expanded upto 86% for methyl orange and 89% for Direct Blue 71 [51].
The conduct of a polyvinyl chloride hollow fiber ultrafiltration membrane for the
expulsion of methyl green dye from hydrous solution was assessed by examining the
impact of fluctuating the activity conditions like the flow rate and initial concentration
to decide upon the effect of separation processes at constant pressure and temperature
[52]. Ultrafiltration membranes were prepared from natural Moroccan clays. The
acquired membrane films were subjected to digressive filtration of Direct Red 80
dye solution having a concentration of 50 ppm under tension of 3 bar. Test results
show that color dismissal could accomplish an estimation of 99 and 97% individually
for the clays [53]. Ceramic membrane employed for ultrafiltration was utilized to
remove Reactive Black 5 dye has a wide range of initial concentrations from 50
to 500 mg/L [54]. Methyl green dye was expelled by adopting hybrid adsorptionmembrane technique in which a mesoporous material MCM-41 was utilized as an
adsorbent which in turn was combined with ultrafiltration technique and the rejection
coefficient was determined to be 94.79% [55].