An OxiTop(®) protocol for screening plant material for its biochemical methane potential (BMP)

A protocol was developed for determining the biochemical methane potential (BMP) of plant material using the OxiTop(®) system. NaOH pellets for CO(2) absorption and different pretreatment methods were tested for their influence in the BMP test. The use of NaOH pellets in the headspace of the bottle...

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Bibliographic Details
Published in:Water science and technology 2012-01, Vol.66 (7), p.1416-1423
Main Authors: Pabón Pereira, C P, Castañares, G, van Lier, J B
Format: Article
Language:English
Subjects:
Anaerobic conditions
Anaerobic digestion
Anaerobic treatment
Anaerobiosis
Biodegradability
Biodegradation
Biodegradation, Environmental
biomass
Bone morphogenetic proteins
Carbon dioxide
Cellulose
Chemical oxygen demand
Comminution
Environmental impact
Headspace
Lignin
Methane
Methane - chemistry
organic waste
Particle size
Pellets
Plants
Pretreatment
Screening
Sodium hydroxide
Stability
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Summary:A protocol was developed for determining the biochemical methane potential (BMP) of plant material using the OxiTop(®) system. NaOH pellets for CO(2) absorption and different pretreatment methods were tested for their influence in the BMP test. The use of NaOH pellets in the headspace of the bottle negatively affected the stability of the test increasing the pH and inhibiting methanization. Sample comminution increased the biodegradability of plant samples. Our results clearly indicate the importance of test conditions during the assessment of anaerobic biodegradability of plant material, considering BMP differences as high as 44% were found. Guidelines and recommendations are given for screening plant material suitable for anaerobic digestion using the OxiTop(®) system.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2012.305