Estimation of methane and electricity potential from canteen food waste

Suhartini, Sri; Lestari, Yulian; Nurika, Irnia

doi:10.1088/1755-1315/230/1/012075

Cited by 42 publications

(30 citation statements)

References 13 publications

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“…On the other hand, the theoretical production of methane evidences the theoretical capacity of CH4 generation of the substrates as a potential value that can be transformed into energetic elements. Suhartini, Lestari & Nurika [26] show that food residues and solid residues/waste tofu are substrates that achieve a theoretical yield of 0,356 y 0,347 m 3 kg -1 VS, with 100% and 50:50 proportions, respectively. In the present research, a maximum of 0,63 m 3 kg -1 VS when using 65% JSC and 35% CM represents 80% higher methane production per kilogram of volatile solids than the previously mentioned substrates.…”

Section: Discussionmentioning

confidence: 99%

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Effect of temperature and the Carbon-Nitrogen (C/N) ratio on methane production through anaerobic co-digestion of cattle manure and Jatropha seed cake

Álvarez-Montero¹,

Mercado-Reyes²,

-Solórzano³

et al. 2022

REPQJ

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Anaerobic digestion is a method of agricultural residue transformation used in bioenergy, making these activities energy efficient. However, it can be limited on a larger scale by the availability and diversity of organic residues related to carbon-nitrogen (C/N). Therefore, the anaerobic co-digestion of bovine manure and Jatropha seed cake (Jatropha curcas) were evaluated, with three different C/N ratios, under two conditions: mesophilic (30ºC) and thermophilic (50ºC). Biodigesters were mounted with three replicates for each C/N ratio. The highest production of CH4 was registered after 30 days of processing in the thermophilic condition (C/N 25:1) with 633.95 ± 5.59 mL of CH4 g-1 VS. In contrast, the lowest production was in the mesophilic condition (C/N 20:1) with 208.66 ± 2.61 mL of CH4 g-1 VS. The feasibility of co-digestion of agricultural residues in the production of CH4 as a possible bioenergetic alternative in short periods was demonstrated.

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Section: Discussionmentioning

confidence: 99%

“…Theoretical energy potential The estimation of the energy potential of each treatment was determined, assuming that 1m 3 of methane has a calorific value of 36 MJ. Therefore, 1m 3 of CH4 will produce 10 kWh, considering an electrical conversion efficiency of 35% [23].…”

Section: 5mentioning

confidence: 99%

Effect of temperature and the Carbon-Nitrogen (C/N) ratio on methane production through anaerobic co-digestion of cattle manure and Jatropha seed cake

Álvarez-Montero¹,

Mercado-Reyes²,

-Solórzano³

et al. 2022

REPQJ

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“…Figure 5 represents the calculated kWh/kgCODremoved in these 13 studies. The estimations that Suhartini et al (2019) proposed to calculate the energy yields for methane were used, and the estimations from IDIALHY for hydrogen (Idealhy.eu, 2022) were used. Figure 5 represents the calculated energy recovered in the studies.…”

Section: Energy Recoverymentioning

confidence: 99%

Energy recovery from wastewater in Mexico: A systematic review

Ortiz-Sánchez

Cuevas-Rodríguez

2023

Front. Environ. Sci.

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The usage of fossil fuels to generate energy and the lack of wastewater treatment in Mexico are two issues that can be addressed at the same time while developing wastewater treatment technologies that incorporate energy recovery in their process train. We carried out a systematic review based on the PRISMA methodology to identify and review studies regarding energy recovery using wastewater as a substrate in Mexico. Peer-reviewed papers were identified through Scopus, Web of Knowledge, and Google Scholar, using a timeframe of 22 years that represented from 2000 to 2022. After applying the selection criteria, we identified 31 studies to be included in the final review, starting from 2007. The kind of energy product, type of technology used, substrate wastewater, amount of energy produced, and main parameters for the operation of the technology were extracted from the papers. The results show that methane is the most researched energy recovery product from wastewater, followed by hydrogen and electricity, and the technology used to archive it is an up-flow anaerobic sludge bed (UASB) reactor to produce methane and hydrogen. In addition, microbial fuel cells (MFCs) were preferred to produce electricity. According to our data, more energy per kgCOD removed could be obtained with methane-recovering technologies in the Mexican peer-reviewed studies compared with hydrogen recovery and electricity production.

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“…The compost yield was estimated to be 18.75% from the mass of the FW [22]. The biogas yield was obtained from literature reviews regarding biogas production, digestate production, technical characteristics, and calorific potentials, to assume a methane production of 53% of the produced biogas [13,[54][55][56][57]. Distances from input suppliers as well as from the FW generation to valorization sites were calculated with Google Maps, and databases like Ecoinvent 3.4 were used for the inventoried processes on each scenario.…”

Section: Assumptions and Data Sourcesmentioning

confidence: 99%

Decision-Making Process in the Circular Economy: A Case Study on University Food Waste-to-Energy Actions in Latin America

et al. 2020

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Economies have begun to shift from linear to circular, adopting, among others, waste-to-energy approaches. Waste management is known to be a paramount challenge, and food waste (FW) in particular, has gained the interest of several actors due to its potential impacts and energy recovery opportunities. However, the selection of alternative valorization scenarios can pose several queries in certain contexts. This paper evaluates four FW valorization scenarios based on anaerobic digestion and composting, in comparison to landfilling, by applying a consistent decision-making framework through a combination of linear programming, Life Cycle Thinking (LCT), and Analytic Hierarchy Process (AHP). The evaluation was built upon a case study of five universities in Costa Rica and portrayed the trade-offs between environmental impacts and cost categories from the scenarios and their side flows. Results indicate that the landfill scenario entails higher Global Warming Potential and Fresh Water Eutrophication impacts than the valorization scenarios; however, other impact categories and costs are affected. Centralized recovery facilities can increase the Global Warming Potential and the Land Use compared to semi-centralized ones. Experts provided insights, regarding the ease of adoption of composting, in contrast to the potential of energy sources substitution and economic savings from anaerobic digestion.

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Estimation of methane and electricity potential from canteen food waste

Cited by 42 publications

References 13 publications

Effect of temperature and the Carbon-Nitrogen (C/N) ratio on methane production through anaerobic co-digestion of cattle manure and Jatropha seed cake

Effect of temperature and the Carbon-Nitrogen (C/N) ratio on methane production through anaerobic co-digestion of cattle manure and Jatropha seed cake

Energy recovery from wastewater in Mexico: A systematic review

Decision-Making Process in the Circular Economy: A Case Study on University Food Waste-to-Energy Actions in Latin America

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