Decolorization of CMP Pulp Effluent by Biological-Chemical Treatments

Document Type : Research Paper

Authors

1 Ph.D, University of Putra, Putra, Malaysia

2 Associate Professor, Department of Wood and Paper Sciences and Technology, Faculty of Natural Resources, University of Tehran, Karaj, I.R. Iran

3 Assistance Professor , Department of Technology of Celoloze & Paper Production, Shahid Beheshti University , Iran

4 Professor, Department of Wood and Paper Sciences and Technology, Faculty of Natural Resources, University of Tehran, Karaj, I.R. Iran

Abstract

The efficiency of Oxidation Processes, Enzymatic treatment, and combined enzymatic/chemical sequences on color remediation of CMP pulp mill effluent was investigated. Two kinds of fungal enzymes; Laccase (EC: 1.10.3.2) from Terametes versicolor and Versatile Peroxidase (EC: 1.11.1.7) from Bjerkandera adusta were chosen and applied. Also, the effect of external mediator on the enzyme based degradations was studied. It was found that both VP from Bjerkandera adusta and Laccase from Terametes versicolor decolorized the deep brown effluent to a clear light yellow solution. It has been found that, concomitant use of enzymes and photo-Fenton process produces a considerable effect on color remediation. The data analysis of sequence treatment indicated that, chemical treatment after the enzymatic stage (photo-Fenton as a post treatment unit) yield a better performance for the CMP effluent.

Keywords

References

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