Selective removal of resin and fatty acids from mechanical pulp effluents by ozone

The application of advanced oxidation technologies to the treatment of effluents from the pulp and paper industry: a review

“…As it has additionally been reported in several other essays, ozonation usually increases the biodegradability of paper mill effluents as well (Amat et al 2005a;Balcioglu et al 2007;Bijan and Mohseni 2004;Bijan and Mohseni 2005;Fontanier et al 2006;Helble et al 1999;Mansilla et al 1997;Nakamura et al 1997;Oeller et al 1997;Roy-Arcand and Archibald 1996;Salokannel et al 2007); mainly because of the successful degradation of certain toxic compounds and the promoted changes in molecular weight fractions from HMW to LMW (Amat et al 2005a;Balcioglu et al 2007;Bauman and Lutz 1974;Fontanier et al 2006;Hostachy et al 1997;Mansilla et al 1997). In fact, Amat et al (2003) also reported that there is an optimum ozone dosage which allows achieving the maximum increase in biodegradability and the highest efficiency of an ozonation process.…”

“…In addition, the ozone oxidation of resin acids has also been addressed relatively effective Laari et al 2000;Ledakowicz et al 2006;Roy-Arcand and Archibald 1996); whereas starch oxidation products showed lower degradation rates than lignin derivatives ones, probably due to the absence of carboncarbon double bonds (Amat et al 2005b;Langlais et al 1991) (Figure 1). Furthermore, why p-toluenesulfonic acid showed a slower degradation rate than other lignin derivatives was explained by the strong deactivating effect of its sulfonic group (Amat et al 2004).…”

“…Particularly, the success of ozonation applied to real wastewater from pulp and paper mills, whether biologically pre-treated or not, and effluents from bleaching stages, has been mainly attributed to the effective degradation of toxic lignin products and chlorophenolic compounds (Amat et al 2005b;Balcioglu et al 2007;Bierbaum et al 2012;Bijan and Mohseni 2004;Bijan and Mohseni 2005;Catalkaya and Kargi 2007;Fontanier et al 2005b;Fontanier et al 2006;Mansilla et al 1997;Oeller et al 1997;Rodríguez et al 1998;Roy-Arcand and Archibald 1996;Salokannel et al 2007;Sevimli 2005;Wang et al 2004;Yeber et al 1999a;Yeber et al 1999b). As it has additionally been reported in several other essays, ozonation usually increases the biodegradability of paper mill effluents as well (Amat et al 2005a;Balcioglu et al 2007;Bijan and Mohseni 2004;Bijan and Mohseni 2005;Fontanier et al 2006;Helble et al 1999;Mansilla et al 1997;Nakamura et al 1997;Oeller et al 1997;Roy-Arcand and Archibald 1996;Salokannel et al 2007); mainly because of the successful degradation of certain toxic compounds and the promoted changes in molecular weight fractions from HMW to LMW (Amat et al 2005a;Balcioglu et al 2007;Bauman and Lutz 1974;Fontanier et al 2006;Hostachy et al 1997;Mansilla et al 1997).…”

Comparison of Conventional and Catalytic Ozonation for the Treatment of Pulp Mill Wastewater

“…Ozone used for the treatment of pulp and paper mill wastewaters mainly acts on the compounds responsible for color and toxicity, AOX, wood extractives, chlorophenolic compounds, lignins, resin, and fatty acids (Mohammed and Smith, 1992;Roy-Arcand and Archibald, 1996;Marco et al, 1997;Chen and Horan, 1998;Korhonen and Tuhkanen, 2000;Laari et al, 2000;Freire et al, 2001;Alvares et al, 2001). The action of ozone is limited to a partial oxidation of organic matter and then often results in poor TOC and COD abatements.…”

Innovative Ozone/Oxygen Reactive Flotation for Paper Deinking

“…Thus surprisingly ozone is not yet used in paper recycling processes. However the strong oxidizing potential of ozone provides it the ability to degrade a wide number of organic compounds (Vilve et al 2008) and possibly non-cellulosic contaminants in recovered cellulosic pulps or dissolved products in recycling effluents (Reynolds et al 1989;Roy-Arcand and Archibald 1996).…”