Reducing biogas emissions from village-scale plant with optimal floating-drum biogas storage tank and operation parameters

Luo, Tao; Pan, Junting; Fu, Lin-Tao; Mei, Zili; Kong, Cuixue; Huang, Hailong

doi:10.1016/j.apenergy.2017.10.036

Cited by 12 publications

(13 citation statements)

References 48 publications

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“…On the other hand, a longer feeding interval needs a larger floating-drum biogas digester, and economic feasibility is a major factor in determining whether the system will succeed. 26 The present study was undertaken to evaluate the performance of a PVC floating dome type anaerobic biogas digester using different feeding intervals.…”

Section: Discussionmentioning

confidence: 99%

Performance evaluation of prefabricated polyvinyl chloride floating dome type anaerobic biogas digester of different feeding intervals using animal waste

et al. 2021

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Background: Anaerobic digestion (AD) has many benefits and is a safe way to generate energy, address the energy shortage problem, and reduce waste and carbon emissions.The study aimed to determine the performance evaluation of prefabricated polyvinyl chloride (PVC) biogas digester and compare different feeding intervals using cow manure. This study was conducted at ambient temperature in three types of feeding practice (daily, 4-day, and 7-day feeding interval) to investigate the variation of biogas production and evaluation of digester performances. The composition of biogas, pH, and total volatile fatty acids (TVFA) were measured regularly and weekly basis. The TVC, Escherichia coli, and Salmonella spp. counts were determined by the spread plate technique method using PCA, EMB agar, and SS agar plate, respectively. Results:The comparison results of daily versus 4-day feeding interval indicated that the total biogas and methane yield was 34% and 28% higher in 4-day interval feeding. The average digester performance was also 34% higher in 4-day feeding interval digester than daily feeding digester. However, the comparison results of daily versus 7-day interval feeding indicated that the total biogas, methane yield, and digester performance were slightly higher in daily feeding. Before and after AD, the bacterial load (TVC, E. coli, and Salmonella spp. count) was reduced by 2-3 logs, and this reduction was also statistically significant (p < 0.05). Conclusion:The performance of PVC digester was highly satisfactory and good enough to fulfil the demand (0.8-1.6 m 3 ) of a five-member family for cooking both in urban and rural areas of Bangladesh.

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Section: Discussionmentioning

confidence: 99%

Performance evaluation of prefabricated polyvinyl chloride floating dome type anaerobic biogas digester of different feeding intervals using animal waste

et al. 2021

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“…Then, the surplus biogas can be served as a backup fuel in the biogas energy storage (BES) supplying electricity when the electricity supply is short, and finally, a circular conversion of power-biogas-power is formulated [17]. This storagelike shift is characterized by its temperature-sensitive anaerobic digestion, i. e., the biogas yield increases with temperature, which surprisingly enables the LBP a promising potential in providing more capacity for accommodating the increasing penetration level of RESs and balancing the power supply in rural areas [18].…”

Section: Nomenclaturementioning

confidence: 99%

Bi-level Energy Trading Model Incorporating Large-scale Biogas Plant and Demand Response Aggregator

Yang

Huang

et al. 2023

Journal of Modern Power Systems and Clean Energy

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Increasing intermittent renewable energy sources (RESs) intensifies the imbalance between demand and generation, entailing the diversification of the deployment of electrical energy storage systems (ESSs). A large-scale biogas plant (LBP) installed with heating devices and biogas energy storage (BES) usually exhibits a storage-like characteristic of accommodating an increasing penetration level of RES in rural areas, which is addressed in this paper. By utilizing the temperature-sensitive characteristic of anaerobic digestion that enables the LBP to exhibit a storage-like characteristic, this paper proposes a bi-level energy trading model incorporating LBP and demand response aggregator (DRA) simultaneously. In this model, social welfare is maximized at the upper level while the profit of DRA is maximized at the lower level. Compared with cases only with DRA, the results show that the proposed model with the LBP improves the on-site accommodation capacity of photovoltaic (PV) generation up to 6.3%, 18.1%, and 18.9% at 30%, 40%, and 50% PV penetration levels, respectively, with a better economic performance. This nonlinear bi-level problem is finally recast by a single-level mathematical program with equilibrium constraints (MPEC) using Karush-Kuhn-Tucker (KKT) conditions and solved by the Cplex solver. The effectiveness of the proposed model is validated using a 33-bus test system and a sensitivity analysis is provided for analyzing what parameter influences the accommodation capacity most.

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“…In the second step, the amount of biogas production is quanti ed according to the commonly accepted parameters for fermentation temperature and organic load rate (OLR) 23 . The approximate shape of the biogas production curve can be calculated using variables related to the reactor con guration and operational parameters, and existing mathematical models or improved equations derived from tting related operational data 17 . Accurate assessment of the amplitude and duration of biogas production rates depend on actual data-driven modeling and step four, since the feeding interval and feeding time points can play essential roles in determining the preferred pairing of set-points on the plant-and usersides 24 .…”

Section: Cbpd Optimization For Demand-dependent Biogas Production And...mentioning

confidence: 99%

“…In so far as possible, the amount of biogas consumed on the user-side should be equal or close to that of biogas production on the plant-side, resulting in a consumption-to-production ratio (CPR) of 1. A higher CPR indicates not only less methane discharged into the atmosphere 17 , but also a greater proportion of methane collected and utilized to substitute fossil fuels. Su cient feedstock for biogas conversion and an adequate number of consumers are the prerequisite factors for achieving the highest cost-bene t ratio 18 .…”

Section: Introductionmentioning

confidence: 99%

Unlocking the full potential of biogas systems for sustainable energy production and climate solutions in rural communities

Shen

2023

Preprint

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On-site conversion of organic waste into biogas to satisfy consumer demand for direct primary energy usage has the potential to mitigate climate change in a highly trustworthy manner. Existing approaches usually ignore either the targeted supply of biogas in dynamic situations or methane slippage, especially where the goal is to achieve energy equality in developing areas, which has become the main obstacle to achieving the full co-benefits of organic waste conversion. Here, we describe an upgraded community biogas production and distribution system (CBPD) to achieve a biogas consumption-to-production ratio of close to 1 in rural or remote areas, compared with the actual performance of five current CBPD systems. Improvements in the practical operation of CBPD systems are proposed to better align out-of-step biogas flow rates on the plant-side with user-side demand. We also demonstrate that upgraded CBPDs can achieve universally high and competitive benefits under the prevailing climate conditions, and that national deployment of such systems in China would contribute a 3.77% reduction in carbon emissions towards meeting the 1.5°C global warming target set by the Paris Agreement.

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Reducing biogas emissions from village-scale plant with optimal floating-drum biogas storage tank and operation parameters

Cited by 12 publications

References 48 publications

Performance evaluation of prefabricated polyvinyl chloride floating dome type anaerobic biogas digester of different feeding intervals using animal waste

Performance evaluation of prefabricated polyvinyl chloride floating dome type anaerobic biogas digester of different feeding intervals using animal waste

Bi-level Energy Trading Model Incorporating Large-scale Biogas Plant and Demand Response Aggregator

Unlocking the full potential of biogas systems for sustainable energy production and climate solutions in rural communities

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