%0 Journal Article %1 Romero.2017 %A Romero, Romina %A Contreras, David %A Segura, Cristina %A Schwederski, Brigitte %A Kaim, Wolfgang. %D 2017 %J Environmental Science and Pollution Research %K Fenton Pinus hydroxyl radical reaction tannin %N 7 %P 6135--6142 %R 10.1007/s11356-016-7532-1 %T Hydroxyl radical production by a heterogeneous Fenton reaction supported in insoluble tannin from bark of Pinus radiata %V 24 %X Fenton reactions driven by dihydroxybenzenes (DHBs) have been used for pollutant removal via advanced oxidn. processes (AOPs), but such systems have the disadvantage of DHB release into the aq. phase. In this work, insol. tannins from bark can be used to drive Fenton reactions and as a heterogeneous support. This avoids the release of DHBs into the aq. phase and can be used for AOPs. The prodn. of ·OH was investigated using a spin-trapping ESR technique (5-dimethyl-1-pyrroline-N-oxide/·OH) in the first minute of the reaction and a high-performance liq. chromatog.-fluorescence technique (coumarin/7-hydroxycoumarin) for 20 min. The ·OH yield achieved using insol. tannins from Pinus radiata bark was higher than that achieved using catechin to drive the Fenton reaction. The Fenton-like system driven by insol. tannins achieved 92.6 $\pm$ 0.3 \% degrdn. of atrazine in 30 min. The degrdn. kinetics of atrazine was linearly correlated with ·OH prodn. The increased reactivity in ·OH prodn. and insoly. of the ligand are promising for the development of a new technique for degrdn. of pollutants in wastewater using heterogeneous Fenton systems. on SciFinder(R)

@article{Romero.2017, abstract = {Fenton reactions driven by dihydroxybenzenes (DHBs) have been used for pollutant removal via advanced oxidn. processes (AOPs), but such systems have the disadvantage of DHB release into the aq. phase. In this work, insol. tannins from bark can be used to drive Fenton reactions and as a heterogeneous support. This avoids the release of DHBs into the aq. phase and can be used for AOPs. The prodn. of ·OH was investigated using a spin-trapping ESR technique (5-dimethyl-1-pyrroline-N-oxide/·OH) in the first minute of the reaction and a high-performance liq. chromatog.-fluorescence technique (coumarin/7-hydroxycoumarin) for 20 min. The ·OH yield achieved using insol. tannins from Pinus radiata bark was higher than that achieved using catechin to drive the Fenton reaction. The Fenton-like system driven by insol. tannins achieved 92.6 $\pm$ 0.3 {\%} degrdn. of atrazine in 30 min. The degrdn. kinetics of atrazine was linearly correlated with ·OH prodn. The increased reactivity in ·OH prodn. and insoly. of the ligand are promising for the development of a new technique for degrdn. of pollutants in wastewater using heterogeneous Fenton systems. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Romero, Romina and Contreras, David and Segura, Cristina and Schwederski, Brigitte and Kaim, Wolfgang.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2a5891e34a3a5b4b1f2756c2fb33bd2b5/huebleriac}, doi = {10.1007/s11356-016-7532-1}, interhash = {f59127ebe9f1b0fdd0b095cb7a5382d8}, intrahash = {a5891e34a3a5b4b1f2756c2fb33bd2b5}, issn = {0944-1344}, journal = {Environmental Science and Pollution Research}, keywords = {Fenton Pinus hydroxyl radical reaction tannin}, number = 7, pages = {6135--6142}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {Hydroxyl radical production by a heterogeneous Fenton reaction supported in insoluble tannin from bark of Pinus radiata}, volume = 24, year = 2017 }