Chemosphere

Photocatalytic degradation of lignin and lignin models, using titanium dioxide: the role of the hydroxyl radical

…, SZ Falone, R Ruggiero, D da Silva Perez, A Castellan

Index: MacHado, Antonio E.H.; Furuyama, Aline M.; Falone, Sandra Z.; Ruggiero, Reinaldo; Perez, Denilson Da Silva; Castellan, Alain Chemosphere, 2000 , vol. 40, # 1 p. 115 - 124

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Citation Number: 69

Abstract

The role of hydroxyl radicals on the degradation of lignins during a cellulosic pulp bleaching process including a photocatalytic stage, was assessed using peroxyformic acid lignins EL1 and REL1 and two phenolic biphenyl lignin models 1 and 2. The irradiations were performed in the absence of photocatalyst TiO2 and H2O2 (condition a), in the presence of TiO2 (condition b) and in the presence of H2O2 (condition c). The experiments were ...