scholarly journals Biochemical methane potential (BMP) of solid organic substrates: evaluation of anaerobic biodegradability using data from an international interlaboratory study

2011 ◽  
Vol 86 (8) ◽  
pp. 1088-1098 ◽  
Author(s):  
F. Raposo ◽  
V. Fernández-Cegrí ◽  
M.A. De la Rubia ◽  
R. Borja ◽  
F. Béline ◽  
...  
Keyword(s):  
Interlaboratory Study ◽  
Organic Substrates ◽  
Biochemical Methane Potential ◽  
Anaerobic Biodegradability ◽  
Methane Potential ◽  
Using Data

scholarly journals Biochemical Methane Potential of Cork Boiling Wastewater at Different Inoculum to Substrate Ratios

2021 ◽  
Vol 11 (7) ◽  
pp. 3064
Author(s):  
Roberta Mota-Panizio ◽  
Manuel Jesús Hermoso-Orzáez ◽  
Luis Carmo-Calado ◽  
Gonçalo Lourinho ◽  
Paulo Sérgio Duque de Brito
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Treatment Plant ◽  
Organic Substrates ◽  
Biochemical Methane Potential ◽  
Volatile Solids ◽  
Working Volume ◽  
Methane Potential ◽  
Bmp Test ◽  
Cork Industry

The present study evaluates the digestion of cork boiling wastewater (CBW) through a biochemical methane potential (BMP) test. BMP assays were carried out with a working volume of 600 mL at a constant mesophilic temperature (35 °C). The experiment bottles contained CBW and inoculum (digested sludge from a wastewater treatment plant (WWTP)), with a ratio of inoculum/substrate (Ino/CBW) of 1:1 and 2:1 on the basis of volatile solids (VSs); the codigestion with food waste (FW) had a ratio of 2/0.7:0.3 (Ino/CBW:FW) and the codigestion with cow manure (CM) had a ratio of 2/0.5:0.5 (Ino/CBW:CM). Biogas and methane production was proportional to the inoculum substrate ratio (ISR) used. BMP tests have proved to be valuable for inferring the adequacy of anaerobic digestion to treat wastewater from the cork industry. The results indicate that the biomethane potential of CBWs for Ino/CBW ratios 1:1 and 2:1 is very low compared to other organic substrates. For the codigestion tests, the test with the Ino/CBW:CM ratio of 2/0.7:0.3 showed better biomethane yields, being in the expected values. This demonstrated that it is possible to perform the anaerobic digestion (AD) of CBW using a cosubstrate to increase biogas production and biomethane and to improve the quality of the final digestate.

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

2012 ◽  
Vol 66 (7) ◽  
pp. 1416-1423 ◽  
Author(s):  
C. P. Pabón Pereira ◽  
G. Castañares ◽  
J. B. van Lier
Keyword(s):  
Anaerobic Digestion ◽  
Plant Material ◽  
Co2 Absorption ◽  
Biochemical Methane Potential ◽  
Test Conditions ◽  
Anaerobic Biodegradability ◽  
Methane Potential ◽  
Bmp Test ◽  
The Stability ◽  
Guidelines And Recommendations

A protocol was developed for determining the biochemical methane potential (BMP) of plant material using the OxiTop® system. NaOH pellets for CO2 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.

scholarly journals The Efficiency of Industrial and Laboratory Anaerobic Digesters of Organic Substrates: The Use of the Biochemical Methane Potential Correction Coefficient

Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1280 ◽  
Author(s):  
Krzysztof Pilarski ◽  
Agnieszka A. Pilarska ◽  
Piotr Boniecki ◽  
Gniewko Niedbała ◽  
Karol Durczak ◽  
...  
Keyword(s):  
Biomass Conversion ◽  
Industrial Scale ◽  
Pig Manure ◽  
Correction Coefficient ◽  
Organic Substrates ◽  
Biochemical Methane Potential ◽  
Anaerobic Digesters ◽  
Potato Waste ◽  
Beet Pulp ◽  
Methane Potential

This study is an elaboration on the conference article written by the same authors, which presented the results of laboratory tests on the biogas efficiency of the following substrates: maize silage (MS), pig manure (PM), potato waste (PW), and sugar beet pulp (SB). This article presents methane yields from the same substrates, but also on a technical scale. Apart from that, it presents an original methodology of defining the Biochemical Methane Potential Correction Coefficient (BMPCC) based on the calculation of biomass conversion on an industrial scale and on a laboratory scale. The BMPCC was introduced as a tool to enable uncomplicated verification of the operation of a biogas plant to increase its efficiency and prevent undesirable losses. The estimated BMPCC values showed that the volume of methane produced in the laboratory was overestimated in comparison to the amount of methane obtained under technical conditions. There were differences observed for each substrate. They ranged from 4.7% to 17.19% for MS, from 1.14% to 23.58% for PM, from 9.5% to 13.69% for PW, and from 9.06% to 14.31% for SB. The BMPCC enables estimation of biomass under fermentation on an industrial scale, as compared with laboratory conditions.

The use of thermochemical pretreatments to improve the anaerobic biodegradability and biochemical methane potential of the sugarcane bagasse

2014 ◽  
Vol 248 ◽  
pp. 363-372 ◽  
Author(s):  
A.G. Costa ◽  
G.C. Pinheiro ◽  
F.G.C. Pinheiro ◽  
A.B. Dos Santos ◽  
S.T. Santaella ◽  
...  
Keyword(s):  
Sugarcane Bagasse ◽  
Biochemical Methane Potential ◽  
Anaerobic Biodegradability ◽  
Methane Potential

scholarly journals Improving Inter-Laboratory Reproducibility in Measurement of Biochemical Methane Potential (BMP)

Water ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1752 ◽  
Author(s):  
Sasha D. Hafner ◽  
Hélène Fruteau de Laclos ◽  
Konrad Koch ◽  
Christof Holliger
Keyword(s):  
Standard Deviation ◽  
Data Processing ◽  
Relative Standard Deviation ◽  
Measurement Methods ◽  
Test Duration ◽  
Organic Substrates ◽  
Biochemical Methane Potential ◽  
Validation Criteria ◽  
Relative Standard ◽  
Methane Potential

Biochemical methane potential (BMP) tests used to determine the ultimate methane yield of organic substrates are not sufficiently standardized to ensure reproducibility among laboratories. In this contribution, a standardized BMP protocol was tested in a large inter-laboratory project, and results were used to quantify sources of variability and to refine validation criteria designed to improve BMP reproducibility. Three sets of BMP tests were carried out by more than thirty laboratories from fourteen countries, using multiple measurement methods, resulting in more than 400 BMP values. Four complex but homogenous substrates were tested, and additionally, microcrystalline cellulose was used as a positive control. Inter-laboratory variability in reported BMP values was moderate. Relative standard deviation among laboratories (RSDR) was 7.5 to 24%, but relative range (RR) was 31 to 130%. Systematic biases were associated with both laboratories and tests within laboratories. Substrate volatile solids (VS) measurement and inoculum origin did not make major contributions to variability, but errors in data processing or data entry were important. There was evidence of negative biases in manual manometric and manual volumetric measurement methods. Still, much of the observed variation in BMP values was not clearly related to any of these factors and is probably the result of particular practices that vary among laboratories or even technicians. Based on analysis of calculated BMP values, a set of recommendations was developed, considering measurement, data processing, validation, and reporting. Recommended validation criteria are: (i) test duration at least 1% net 3 d, (ii) relative standard deviation for cellulose BMP not higher than 6%, and (iii) mean cellulose BMP between 340 and 395 NmLCH4 gVS−1. Evidence from this large dataset shows that following the recommendations—in particular, application of validation criteria—can substantially improve reproducibility, with RSDR < 8% and RR < 25% for all substrates. The cellulose BMP criterion was particularly important. Results show that is possible to measure very similar BMP values with different measurement methods, but to meet the recommended validation criteria, some laboratories must make changes to their BMP methods. To help improve the practice of BMP measurement, a new website with detailed, up-to-date guidance on BMP measurement and data processing was established.

Biochemical methane potential and biodegradability of complex organic substrates

2011 ◽  
Vol 102 (3) ◽  
pp. 2255-2264 ◽  
Author(s):  
Rodrigo A. Labatut ◽  
Largus T. Angenent ◽  
Norman R. Scott
Keyword(s):  
Organic Substrates ◽  
Biochemical Methane Potential ◽  
Methane Potential ◽  
Complex Organic

scholarly journals Experimental investigation of biogas production from cytrus waste: Co-digestion with cattle manure

2016 ◽  
Vol 18 (3) ◽  
pp. 516-526 ◽  
Keyword(s):  
Buffer Capacity ◽  
Biogas Production ◽  
Oxygen Demand ◽  
Cattle Manure ◽  
Biochemical Methane Potential ◽  
Buffer Solution ◽  
Anaerobic Biodegradability ◽  
Methane Potential ◽  
Methane Production Rate ◽  
Citrus Waste

<div> <p>Biogas production through anaerobic co-digestion of a mixture of cattle manure and citrus waste using an experimental facility for testing the biochemical methane potential (BMP) was investigated. No buffer solution is added to the mixture in order to use the buffer capacity from cattle manure. Regular measurements of pH, alkalinity, chemical oxygen demand, methane and biogas net production were performed. Three substrate inoculum ratios (SIR) 1:1, 2:1 and 3:1 (g COD/g VSS) were evaluated. Maximum COD removals of 56.4 %, 51.3 % and 48.0 % for the SIRs 1:1, 2:1 and 3:1 were obtained. For all SIR, pH was on the range of 6.5 to 7.5, while the maximum VFA concentration was 4250 mg CH<sub>3</sub>COOH l<sup>-1</sup>. Alkalinity ranged between 2250 to 4500 mg CaCO<sub>3 </sub>l<sup>-1</sup>. Both maximum methane production rate (MMPR) and percentage of anaerobic biodegradability were established. BMP of 94.3 to 146.6 mL<sub>STP-CH4</sub>/gVSS were calculated for the ratios 1:1 and 3:1, respectively. The highest feasibility for biogas production and methane was established for SIR 3:1.</p> </div> <p>&nbsp;</p>

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