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Title: Anaerobic digestion of pulp and paper mill wastes: an overview of the developments and improvement opportunities
Author: Kamali, Mohammadreza
Gameiro, Tânia
Costa, Maria Elisabete V.
Capela, Isabel
Keywords: Pulp and paper industry
Anaerobic digestion
Methane production
Issue Date: Aug-2016
Publisher: Elsevier
Abstract: Various organic and inorganic hazardous substances are commonly originated during the processing of virgin or recovered fibers (RCFs), when the pulp and paper (P&P) are produced. Hence, pulp and paper industry (PPI) strongly need to employ advanced waste treatment processes as a powerful tool to comply with the stringent environmental regulations in one hand, and to increase their profitability in the current declining P&P markets, on the other hand. Among the treatment alternatives, anaerobic digestion (AD), is an interesting cost effective alternative with a small environmental footprint and has been increasingly adopted by the PPI to reach this goal. However, the application of AD to deal with wastes generated in P&P mills has been restricted due to a number of limitations, regarding the anaerobic reactor design and the operating conditions. Hence, the optimization of the AD performance would be a crucial step in order to increase the economic benefits, and also to satisfy the strict environmental protection standards. To this end, this paper presents an overview on the current state of the developments associated with AD treat ment of P&P mill wastes to assess the applicability of this treatment process for the management of this type of complex wastes. In this context, suggestions are provided to maximize both biogas production and removal efficiency, focusing on the relationship between waste composition and reactor design and operational conditions, which will enhance methane capture and contribute to prevent global warming.
Peer review: yes
DOI: 10.1016/j.cej.2016.03.119
ISSN: 1385-8947
Appears in Collections:CICECO - Artigos

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