Table 11.4 Various advanced oxidation processes employed for tannery wastewater treatment
Type of
tannery
wastewater
Advanced oxidation process
applied
Pollutant reduction
References
Raw tannery
wastewater
Fenton reagent
70% reduction in chemical
oxygen demand
Lins et al. (2003)
Coagulated/
flocculated
tannery
wastewater
Photocatalysis (ultraviolet rays/
titanium dioxide)
6% reduction in chemical
oxygen demand, 15%
reduction in biochemical
oxygen demand removal
and 11% total organic
carbon
Schrank et al.
(2004)
Biological
treated tannery
wastewater
Ozone
30% reduction in chemical
oxygen demand
Serdar Dogruel
M.D., Esra Ates
Genceli (2004)
Coagulated
tannery
wastewater
Fenton reagent
80% reduction in chemical
oxygen demand
Schrank et al.
(2005)
Coagulated
tannery
wastewater
Ultraviolet rays/hydrogen
peroxide
60% reduction in chemical
oxygen demand
Sauer et al. (2006)
Raw tannery
wastewater
Electrochemical process
70% reduction in chemical
oxygen demand
Kurt et al. (2007)
Equalized
tannery
wastewater
Electrochemical process
83.9% phenol degradation Costa et al. (2008)
40.5% total organic carbon reduction
Chromiumcontaining
tannery
wastewater
Electrocoagulation
95% of chromium removal Kongjao et al.
(2008)
Equalized
tannery
wastewater
Electrochemical process
51–56% reduction in
chemical oxygen demand
EspinozaQuiñones et al.
(2009)
30–700% total suspended
solids reduction
Raw tannery
wastewater
Ozone
60% reduction in chemical
oxygen demand
Preethi et al.
(2009)
Pre-treated
tannery
wastewater
Ozone
85% reduction in chemical
oxygen demand
Schrank et al.
(2009)
Synthetic
tannery
wastewater
Electrochemical
89% reduction in chemical
oxygen demand
Sundarapandiyan
et al. (2010)
(continued)
372
A. Tripathi and S. Narayanan