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Anaerobic digestion of pulp and paper mill wastes: an overview of the developments and improvement opportunities
- Source :
- Repositório Científico de Acesso Aberto de Portugal, Repositório Científico de Acesso Aberto de Portugal (RCAAP), instacron:RCAAP
- Publication Year :
- 2016
- Publisher :
- Elsevier, 2016.
-
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 treatment 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. (C) 2016 Elsevier B.V. All rights reserved.
- Subjects :
- Engineering
Pulp and paper industry
WATER TREATMENT PLANTS
020209 energy
General Chemical Engineering
02 engineering and technology
010501 environmental sciences
PACKED-BED REACTOR
Wastewater
BLEACHED KRAFT PULP
7. Clean energy
01 natural sciences
CO-DIGESTION
Sludge
Industrial and Manufacturing Engineering
12. Responsible consumption
Biogas
Hazardous waste
Anaerobic digestion
0202 electrical engineering, electronic engineering, information engineering
Environmental Chemistry
Mill
EFFLUENT TREATMENT
0105 earth and related environmental sciences
MEMBRANE BIOREACTOR
Waste management
business.industry
BAFFLED REACTOR
Paper mill
General Chemistry
UASB REACTOR
Methane production
6. Clean water
Waste treatment
13. Climate action
SULFATE-REDUCING BACTERIA
Profitability index
Sewage treatment
business
MICROBIAL COMMUNITY STRUCTURE
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Repositório Científico de Acesso Aberto de Portugal, Repositório Científico de Acesso Aberto de Portugal (RCAAP), instacron:RCAAP
- Accession number :
- edsair.doi.dedup.....b69de69000eef8b0d92ebf8f65db2270