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Membranes 2016, 6(1), 7; doi:10.3390/membranes6010007

Treatment of the Bleaching Effluent from Sulfite Pulp Production by Ceramic Membrane Filtration

1
Institute of Bioprocess Engineering and Membrane Technology, University of Applied Sciences Mittelhessen, 35390 Giessen, Germany
2
Sappi Fine Paper Europe, 89584Ehingen, Germany
3
Department of Chemical Engineering, Kansas State University, Manhattan, KS 66506, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Alberto Figoli
Received: 31 October 2015 / Revised: 24 December 2015 / Accepted: 30 December 2015 / Published: 31 December 2015
(This article belongs to the Special Issue Membranes for Environmental Applications)
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Abstract

Pulp and paper waste water is one of the major sources of industrial water pollution. This study tested the suitability of ceramic tubular membrane technology as an alternative to conventional waste water treatment in the pulp and paper industry. In this context, in series batch and semi-batch membrane processes comprising microfiltration, ultrafiltration and nanofiltration, ceramic membranes were developed to reduce the chemical oxygen demand (COD) and remove residual lignin from the effluent flow during sulfite pulp production. A comparison of the ceramic membranes in terms of separation efficiency and performance revealed that the two-stage process configuration with microfiltration followed by ultrafiltration was most suitable for the efficient treatment of the alkaline bleaching effluent tested herein, reducing the COD concentration and residual lignin levels by more than 35% and 70%, respectively. View Full-Text
Keywords: ceramic membrane; bleaching effluents; waste water treatment; chemical oxygen demand removal; membrane fouling; permeate flux rate ceramic membrane; bleaching effluents; waste water treatment; chemical oxygen demand removal; membrane fouling; permeate flux rate
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Ebrahimi, M.; Busse, N.; Kerker, S.; Schmitz, O.; Hilpert, M.; Czermak, P. Treatment of the Bleaching Effluent from Sulfite Pulp Production by Ceramic Membrane Filtration. Membranes 2016, 6, 7.

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