Analysing global food waste problem: pinpointing the facts and estimating the energy content

Melikoğlu, Mehmet; Lin, Carol Sze Ki; Webb, Colin

doi:10.2478/s13531-012-0058-5

Cited by 157 publications

(129 citation statements)

References 23 publications

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“…Food waste can be derived from homes, manufacturing, food services, and the retail sector; domestic food waste production is the largest part of them and accounts for 42% of the total. The problem of food waste production is higher in Asia, where an increase in the total amount of annual urban food waste is expected-from 278 Mt in 2005 to 416 Mt in 2025 [9].…”

Section: Introductionmentioning

confidence: 99%

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Ethanol Production from Enzymatically Treated Dried Food Waste Using Enzymes Produced On-Site

Μάτσακας

Christakopoulos

2015

Sustainability

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Abstract:The environmental crisis and the need to find renewable fuel alternatives have made production of biofuels an important priority. At the same time, the increasing production of food waste is an important environmental issue. For this reason, production of ethanol from food waste is an interesting approach. Volumes of food waste are reduced and ethanol production does not compete with food production. In this work, we evaluated the possibility of using source-separated household food waste for the production of ethanol. To minimize the cost of ethanol production, the hydrolytic enzymes that are necessary for cellulose hydrolysis were produced in-house using the thermophillic fungus Myceliophthora thermophila. At the initial stage of the study, production of these thermophilic enzymes was studied and optimized, resulting in an activity of 0.28 FPU/mL in the extracellular broth. These enzymes were used to saccharify household food waste at a high dry material consistency of 30% w/w, followed by fermentation. Ethanol production reached 19.27 g/L with a volumetric productivity of 0.92 g/L·h, whereas only 5.98 g/L of ethanol was produced with a volumetric productivity of 0.28 g/L·h when no enzymatic saccharification was used.

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Section: Introductionmentioning

confidence: 99%

“…For example, in the EU, the EC law no. 1774/2002 prohibits the use of catering waste for animal feed [9]. Finally, incineration is also a waste treatment method used for food waste.…”

Section: Introductionmentioning

confidence: 99%

Ethanol Production from Enzymatically Treated Dried Food Waste Using Enzymes Produced On-Site

Μάτσακας

Christakopoulos

2015

Sustainability

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“…Other studies also supported that Elementar (Hanau, Germany) suitable for simultaneous isotope ratio determination of nitrogen, carbon and sulphur isotopes in a single run whereby it major advantages is capability of combusting up to 100 mg of organic samples which provide large provision of sufficient amount of SO2 for isotope analysis even from material with low sulphur content [29][30][31][32][33][34][35][36][37][38]. Moreover, the separation of combustion gases as their second characteristic is performed by reversible adsorption on (molecular sieve) traps in which they allocated to a specific gas species.…”

Section: Comparison Between Ultimate Anaysis and Chns Analyzermentioning

confidence: 94%

Chns analysis towards food waste in composting

Firdaus¹,

Samah²,

Hamid³

2018

J. CleanWAS

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High food waste generation in Malaysia that reached up to 15, 000 tonnes per day assign for major problems towards environment, economy and social aspect. Alternative method had been studied for the past years, but composting was seen among the best possible solution to treat this matter. Composting not only has an environmentally method but it also produces a valuable end product that will benefit in agricultural sector. Further studies had been done in this paper to represent their macro and micro nutrient quality as well as their bioavailability towards plant and the analysis of data collected in both CHNS analyser and mathematical method using ultimate analysis. This study also applied enhanced composting process with its segregation, drying, grinding and standard aeration time. Each container has been rotated for 5 minutes yet different resting time was applied which are 25, 55, 155 minutes namely A, B, C and D within 2 hours period. Result shown that overall Carbon (C), Nitrogen (N) and Sulphur (S) concentration increases as the higher aeration was applied while the Hydrogen vice versa. The highest elemental percentage distribution recorded is carbon (31%) while the lowest recorded is S (0.115%). The data collected from Ultimate Analysis was seen not applicable to be use as it has the same content as food waste after composting. The compound molecular formula recorded was C29H7N5S. Regarding ratio of carbon to nitrogen results, it was found that it ranged from 5.39 to 5.71% for different compost treatment under study, where the lowest value of C and N ratio (5.39%) for sample C and the highest value (5.71%) was obtained for sample B with all has the same C/N ratio which is 6: 1 which suitable range in application of soil amendment. Therefore, this study found a significant relationship between chemical factors and compost formation which contribute to better analysis, especially to food waste management.

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“…Una posible alternativa, sería implementar un proyecto de recuperación de energía a partir del tratamiento del material orgáni-co que puede generarle ingresos (Melikoglu et al, 2013). Villamagua (2016) Los bebederos no requieren modificación para su instalación pero sí inversión para el mantenimiento.…”

Section: Discusión Y Conclusionesunclassified

Diagnóstico Del Manejo De Residuos Sólidos en El Parque Histórico Guayaquil

Cervetto

Moreira

2017

lgr

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Artículo recibido el 23 de mayo de 2017. Aceptado, tras revisión, el 1 de agosto de 2017. Publicado el 1 de septiembre de 2017. ResumenSe realizó un diagnóstico del manejo de residuos sólidos del Parque Histórico Guayaquil (PHG) para determinar la generación de residuos sólidos, verificar su gestión con base en la normativa y proponer alternativas viables para un adecuado manejo, utilizando métodos cualitativo y cuantitativo con alcance descriptivo. Se realizaron entrevistas a actores clave. Los residuos se cuantificaron durante ocho semanas y la identificación cualitativa se realizó con un muestreo puntual y lineamientos de normas nacionales e internacionales. Los desechos no peligrosos registraron 452 kg en promedio semanal y mostraron una relación directa con el número de visitantes. Los desechos peligrosos pesaron 7.5 kg y los especiales 20 kg. Las categorías por tipo de residuo fueron: 5 % peligrosos, 12 % especiales y 83 % no peligrosos. De éstos, el 45 % corresponde a orgánicos, 27 % a reciclables y el 11 % a no reciclables. Se determinó un 36 % de cumplimiento de 70 aspectos evaluados de la normativa ambiental aplicable, por lo que se debe implementar la gestión de residuos y obtener los permisos ambientales. El impacto ambiental por la generación de desechos no debería enfocarse en la cantidad sino en su tipo y manejo. El PHG cuenta con infraestructura y potencial para convertirse en un modelo de gestión replicable. Palabras claves: Tratamiento de residuos, reciclaje de desechos, legislación ambiental, gestión ambiental.

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Analysing global food waste problem: pinpointing the facts and estimating the energy content

Cited by 157 publications

References 23 publications

Ethanol Production from Enzymatically Treated Dried Food Waste Using Enzymes Produced On-Site

Ethanol Production from Enzymatically Treated Dried Food Waste Using Enzymes Produced On-Site

Chns analysis towards food waste in composting

Diagnóstico Del Manejo De Residuos Sólidos en El Parque Histórico Guayaquil

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