TY - JOUR
T1 - 8Th iwa symposium on waste management problems in agro-industries- agro'2011
T2 - H2O2/UV-C treatment of textile preparation wastewater: Kinetic investigation on alternative combinations of commercial textile preparation auxiliaries
AU - Arslan-Alaton, Idil
AU - Olmez-Hanci, Tugba
AU - Shayin, Sarina
PY - 2012
Y1 - 2012
N2 - Four different textile preparation effluents were simulated to examine the applicability of the hydrogen peroxide/ultraviolet-C(H2O 2/UV-C) advanced oxidation process for the treatment of real textile preparation (desizing, scouring and bleaching) wastewater bearing the non-ionic surfactant nonyl phenol decaethoxylate (NP-10). In the absence of any textile preparation chemical, NP-10 degradation was complete in 15 min (rate coefficient: 0.22 min-1) accompanied by 78% chemical oxygen demand (COD) (rate coefficient: 0.026 min-1) and 57% total organic carbon (TOC) (rate coefficient: 0.014 min-1) removals achieved after 60 min photochemical treatment. H2O2 consumption rates were not significantly affected by the introduction of carbonate and chloride ions (average rate coefficient: 0.032 min-1) at pH values <11.5, above which H2O2 dissociation to its conjugate base HO2 became pronounced. The organic, phosphonate-based sequestering agents competed with NP-10 for UV-C light absorption and HO radicals. H2O2/UV-C oxidation of the simulated textile preparation effluent containing 3.0 g L-1 Cl-, 1.5 g L-1 NaOH and 1.0 g L-1 diethylenetriamine pentamethylene phosphonic acid (DTPMP) resulted in the worst treatment performance due to its high pH and organic carbon content. For this textile preparation effluent, NP- 10 abatement was complete in 100 min (rate coefficient: 0.018 min-1), while COD and TOC removals dropped down to only 16% and 8%, respectively, achieved after 60 min treatment. The highest H2O2/UV-C oxidation efficiency resulting in 34% COD and 28% TOC removals was obtained for the simulated textile preparation effluent comprising of 3.0 g L-1 Cl-, 1.5 g L -1 NaOH and 1.0 g L-1 1-hydroxy ethylidene-1,1- diphosphonic acid (HEDP). For this textile preparation effluent, NP-10 degradation was complete after 50 min (rate coefficient: 0.061 min-1) exposure to H2O2/UV-C treatment.
AB - Four different textile preparation effluents were simulated to examine the applicability of the hydrogen peroxide/ultraviolet-C(H2O 2/UV-C) advanced oxidation process for the treatment of real textile preparation (desizing, scouring and bleaching) wastewater bearing the non-ionic surfactant nonyl phenol decaethoxylate (NP-10). In the absence of any textile preparation chemical, NP-10 degradation was complete in 15 min (rate coefficient: 0.22 min-1) accompanied by 78% chemical oxygen demand (COD) (rate coefficient: 0.026 min-1) and 57% total organic carbon (TOC) (rate coefficient: 0.014 min-1) removals achieved after 60 min photochemical treatment. H2O2 consumption rates were not significantly affected by the introduction of carbonate and chloride ions (average rate coefficient: 0.032 min-1) at pH values <11.5, above which H2O2 dissociation to its conjugate base HO2 became pronounced. The organic, phosphonate-based sequestering agents competed with NP-10 for UV-C light absorption and HO radicals. H2O2/UV-C oxidation of the simulated textile preparation effluent containing 3.0 g L-1 Cl-, 1.5 g L-1 NaOH and 1.0 g L-1 diethylenetriamine pentamethylene phosphonic acid (DTPMP) resulted in the worst treatment performance due to its high pH and organic carbon content. For this textile preparation effluent, NP- 10 abatement was complete in 100 min (rate coefficient: 0.018 min-1), while COD and TOC removals dropped down to only 16% and 8%, respectively, achieved after 60 min treatment. The highest H2O2/UV-C oxidation efficiency resulting in 34% COD and 28% TOC removals was obtained for the simulated textile preparation effluent comprising of 3.0 g L-1 Cl-, 1.5 g L -1 NaOH and 1.0 g L-1 1-hydroxy ethylidene-1,1- diphosphonic acid (HEDP). For this textile preparation effluent, NP-10 degradation was complete after 50 min (rate coefficient: 0.061 min-1) exposure to H2O2/UV-C treatment.
KW - Hydroxyl radical scavengers
KW - Nonyl phenol decaethoxylate (NP-10)
KW - Phosphonic acidbased sequestering agents
KW - Textile preparation effluent
UR - http://www.scopus.com/inward/record.url?scp=84871881093&partnerID=8YFLogxK
U2 - 10.1080/09593330.2012.665489
DO - 10.1080/09593330.2012.665489
M3 - Article
C2 - 22988612
AN - SCOPUS:84871881093
SN - 0959-3330
VL - 33
SP - 1531
EP - 1537
JO - Environmental Technology (United Kingdom)
JF - Environmental Technology (United Kingdom)
IS - 13
ER -