Treatment of the effluent from a kraft bleach plant with the white-rot fungus Pleurotus ostreatoroseus sing

Abstract

-The ligninolytic fungusPleurotus ostreatoroseus (synonymy of Pleurotus ëous) was used to treat the first alkali extraction stage (E1) effluent of a kraft bleach plant. It was pelletized and used for two continuous experiments in a two-liter turbulent-flow bioreactor. In the first experiment, the average removal of color and of total phenols was 18.6 and 11.6%, respectively, after the addition of glucose. During the second experiment, which was developed with the addition of several quantities of glucose, the maximum removal of color, of total phenols and of lignin/chlorolignin was 19.4, 9.4 and 44.5%. For both experiments, the best results were obtained when the effluent was diluted and enriched with glucose. This indicated the need for an extra carbon source for the fungal treatment. Using the mycelial mass in suspension, three experiments were carried out. The best results were obtained with 20% fungus and shaking of the effluent. During the last three days of the experiment the average removal of color, of total phenols and of lignin/chlorolignin was 84.4±6.1, 82.1±5.7 and 72.4±8.9, respectively. The results indicate the potential of Pleurotus ostreatoroseus for use in the treatment of E1 effluent.

Decolourization and detoxification of pulp and paper mill effluent by Emericella nidulans var. nidulans

“…A study in 1988 reported the use of sucrose and ammonium chloride for treatment of paper mill effluent by S. commune [26]. In another study Pleurotus ostreatoroseus was used for the treatment of pulp and paper mill effluent and glucose was added [31]. Thus the use of co-substrates improved the decolourization potential of fungi [25].…”

Additive effects of CuSO4 and aromatic compounds on laccase production by Pleurotus sajor-caju PS-2001 using sucrose as a carbon source

“…The implementation of laccase-mediated systems holds promise for biotechnological processes of industrial and environmental interest, including cellulose pulp bleaching, textile dye decolorization, polycyclic aromatic hydrocarbon oxidation, effluent detoxification, and phenol removal (Breen and Singleton, 1999;Santos et al, 2002;Munari et al, 2007;Munari et al, 2008;Schmitt et al, 2012). Additionally, laccases have found use in the pharmaceutical, chemical, and cosmetic industries, as well as in foods and beverages, e.g., for the clarification and stabilization of fruit juices.…”

Chemical Oxygen Demand and Turbidity Improvement of Deinked Tissue Wastewater using Electrocoagulation Techniques

“…It is difficult to treat and purify this wastewater and to estimate the hazards (Ali and Sreekrishnan 2001;Ragunathan and Swaminathan 2004). The treatment systems apply physical, chemical, biological, ozonation, or a combination of methods for effective purification of industrial paper wastewater due to the variation of wastewater characteristics (Basak and Gokay 1999;Fu and Viraraghavan 2001;Tezel et al 2001;Santos et al 2002;Ragunathan and Swaminathan 2004;Terrazas et al 2010;Tezcan UN et al 2016;Hubbe et al 2016).…”