Biochemical Methane Potential Assays for Organic Wastes as an Anaerobic Digestion Feedstock

Cabrita, T.; Santos, Maria Teresa

doi:10.3390/su151511573

Cited by 4 publications

(3 citation statements)

References 121 publications

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“…Additionally, BMP 1% (early methane potential) plays a key role in the selection process by offering insights into the initial methane production rate, allowing for quicker assessments and standardized criteria for experiment termination [18,19]. Further-more, considering BMP 90% (90% methane potential) provides a deeper understanding of the digestion kinetics, especially in terms of reactor efficiency and the time required to reach significant methane yields [20,21]. Therefore, this study discusses these two characteristics based on the materials used in the experiment.…”

Section: Analytic Proceduresmentioning

confidence: 99%

“…For the above reasons, this paper suggests using BMP 1% from the German Engineering Association's 2016 standard VDI 4630 [20] as the methane potential to be measured for the materials, which is defined as the BMP value when methane production for the day is less than 1% of the cumulative production.…”

Section: Determination Of Bmp Values For Selected Materials-bmp 1%mentioning

confidence: 99%

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Investigating the Energy Potential and Degradation Kinetics of Nine Organic Substrates: Promulgating Sustainability in Developing Economies

Onu,

Pradhan

2024

Sustainability

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To standardize, systematize, and improve the efficiency of the evaluation of biodegradable materials for large-scale biogas projects to support clean and sustainable energy development in emerging economies from a sub-Saharan African perspective, this paper analyzes and fits the potential for methane production (biochemical methane potential, BMP) and degradation kinetics of materials based on the gas production and degradation dynamics obtained from methane potential experiments. The first-order, modified first-order, and Gompertz models are used for analysis and fitting. The Gompertz model shows higher accuracy in fitting the methane production potential curve of screened materials, and the fitted methane potential values are close to the experimental values. When using BMP1% (cumulative gas production reaching 1% of cumulative gas production per day) as a quantitative indicator for the methane production potential of materials, the cumulative methane production reaches over 85% of the cumulative methane production at the end of the experiment. The BMP test time is shortened by 26.98% to 72.06%. Among the screened materials, the methane production potential (calculated using BMP1%) of dry rice straw, maize leaves, fresh rice, soybean straw, maize stalks, chicken manure hydrolysate, chicken feathers, kitchen/food waste, and chicken offal are 234.14, 241.01, 253.34, 331.40, 305.80, 508.41, 510.10, 630.7, and 621.32 mL/g, respectively. The kinetic parameters show that among the nine materials, cellulose materials (except for maize stalks and soybean straw), chicken manure, and kitchen waste are easily degradable materials. In contrast, chicken feathers and offal are slowly degradable materials. The study posits that comparing standardized methane production potential and methane production kinetic parameters among materials improves the efficiency of screening materials and is critical for biogas projects.

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Section: Analytic Proceduresmentioning

confidence: 99%

Section: Determination Of Bmp Values For Selected Materials-bmp 1%mentioning

confidence: 99%

Investigating the Energy Potential and Degradation Kinetics of Nine Organic Substrates: Promulgating Sustainability in Developing Economies

Onu,

Pradhan

2024

Sustainability

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“…and cow manure on a 1:1 VS basis. The biogas production range for dairy effluent on its own has been in the range of 265-343 L CH 4 /kgVS for dairy manure, solid fraction, and liquid fraction [26].…”

Section: Introductionmentioning

confidence: 99%

The Hard Reality of Biogas Production through the Anaerobic Digestion of Algae Grown in Dairy Farm Effluents

Hull-Cantillo,

Lay,

Glasgow

et al. 2024

Fermentation

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Much emphasis has been given to algal biomass growth in dairy farm wastewater. Most of the systems examined require productive land to be converted and/or freshwater use to dilute high concentrations of nutrients found in dairy effluent. A rotating algal biofilm (RABR) provides the capacity to grow algae without sacrificing productive land or freshwater. In theory, this system would overcome some of the economic and environmental challenges that other systems have. A combination of theoretical information, nutrient uptake formulas, and economic formulas were used to calculate the potential of biogas production from algae grown in an RABR with dairy effluents. The average nutrient uptake was 0.8 mgN/m2 per day and 0.1 mgP/m2 per day. The maximum methane production from the anaerobic digestion of algae was 112 m3/RABR·year. The minimum and maximum economic scenarios resulted in gross profits of NZD −2101 and −1922. After evaluating this system for the first time in the New Zealand dairy farming context, it was found that biogas production from an RABR is not a feasible option for New Zealand dairy farmers.

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Bridging the Gap between Biowaste and Biomethane Production: A Systematic Review Meta-Analysis Methodological Approach

Toufexis,

Makris,

Vlachokostas

et al. 2024

Sustainability

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Anaerobic digestion (AD) is a promising biowaste valorization technology for sustainable energy, circular economy, local energy community growth, and supporting local authorities’ environmental goals. This paper presents a systematic review meta-analysis methodology for biomethane estimation, using over 600 values of volatile solids (VS) content and biochemical methane potential (BMP) of six different waste streams, collected from 240 scientific studies. The waste streams include cow manure (CM), sheep/goat manure (SGM), wheat straw (WS), household waste (HW), organic fraction of municipal solid waste (OFMSW), and sewage sludge (SS). The statistical analysis showed a mean VS content of 11.9% (CM), 37.3% (SGM), 83.1% (WS), 20.8% (HW), 19.4% (OFMSW), and 10.6% (SS), with BMP values of 204.6, 184.1, 305.1, 361.7, 308.3, and 273.1 L CH4/kg VS, respectively. The case study of Kozani, Greece, demonstrated the methodology’s applicability, revealing a potential annual CH4 production of 15,429,102 m3 (corresponding to 551 TJ of energy), with SGM, WS, and CM as key substrates. Kozani, aiming for climate neutrality by 2030, currently employs conventional waste management, like composting, while many local business residual streams remain unused. The proposed model facilitates the design and implementation of AD units for a sustainable, climate-neutral future.

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Biochemical Methane Potential Assays for Organic Wastes as an Anaerobic Digestion Feedstock

Cited by 4 publications

References 121 publications

Investigating the Energy Potential and Degradation Kinetics of Nine Organic Substrates: Promulgating Sustainability in Developing Economies

Investigating the Energy Potential and Degradation Kinetics of Nine Organic Substrates: Promulgating Sustainability in Developing Economies

The Hard Reality of Biogas Production through the Anaerobic Digestion of Algae Grown in Dairy Farm Effluents

Bridging the Gap between Biowaste and Biomethane Production: A Systematic Review Meta-Analysis Methodological Approach

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