Investigation of agricultural and animal wastes in Greece and their allocation to potential application for energy production

Skoulou, Vasiliki; Zabaniotou, Α.

doi:10.1016/j.rser.2005.12.011

Cited by 98 publications

(47 citation statements)

References 34 publications

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“…The plastic comes from the cords used to train the plants and that are often tangled with the plant material and are not separated at the end of the harvest. The main problem with these plastics are their emissions in the combustion process (Hedman et al, 2006) in addition to the emissions of the plant material itself, the latter being much less harmful than the combustion of any fossil fuel (Abasaeed, 1992;Hall and House, 1995;Misra et al, 1995;Obeng et al, 1997;Danon and Stanojevic, 1998;Muiste and Kask, 1998;Dai et al, 1999;Arbon and Bowell, 2000;Kakareka, 2002;Olsson et al, 2003;Chowdiah and Gowda, 2004;Mendoza et al, 2004;Debdoubi et al, 2005;Bianchi et al, 2006;Nilsson et al, 2006;Katinas et al, 2007;McIlveenWright et al, 2007;Narayanan and Natarajan, 2007;Skoulou and Zabaniotou, 2007;Koa and Chang, 2008;Mirza et al, 2008). However, the emissions exist (Demirbas, 2005) and should be evaluated (Frings et al, 1992;Dolensek, 2004;Elías, 2007).…”

Section: Discussionmentioning

confidence: 99%

“…Some of these wastes can be burned in different types of factories, using organic fuels as an energy source for different processes (Bianchi et al, 2006). Also, the use of biomass as a complement for coal at energy facilities has been shown to reduce emissions of CO, NO X , and SO 2 (McIlveen-Wright et al, 2007;Narayanan and Natarajan, 2007;Skoulou and Zabaniotou, 2007;Koa and Chang, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Briquettes of plant remains from the greenhouses of Almería (Spain)

Callejón-Ferre¹,

López-Martínez

2009

Span. j. agric. res.

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Since ancient times, plant biomass has been used as a primary fuel, and today, with the impending depletion of fossil fuels, these vegetal sources constitute a cleaner alternative and furthermore have a multitude of uses. The aim of the present study is to design a method of recycling and reuse of plant wastes from intensive agriculture under plastic, by manufacturing briquettes in an environmentally friendly manner. In Almería (SE Spain), agriculture generates 769,500 t year -1 of plant remains from greenhouse-grown horticultural crops, a resource currently used for composting and for producing electricity. With the machinery and procedures of the present study, another potential use has been developed by detoxifying and eliminating the plastic wastes of the original biomass for the fabrication of briquettes for fireplaces. The results were slightly inferior to the commercial briquette from other non-horticultural plant materials (no forestry material), specifically 2512 kJ kg -1 , in the least favourable case. On the contrary, the heating value with respect to the two charcoals was significantly lower, with a difference of 12,142 kJ kg -1 . In conclusion; a procedure, applicable in ecological cultivation without agrochemicals or plastic cords, has been developed and tested to reuse and transform plant materials from intensive cultivation into a stable non-toxic product similar to composite logs, applicable in commercial settings or in residential fireplaces.Additional key words: biomass, contamination, horticulture, recycling. Resumen Briquetas de residuos vegetales procedentes de los invernaderos de Almería (España)Desde antaño, la biomasa vegetal se ha utilizado como combustible primario, es más, hoy en día con la disminución de combustibles fósiles es una alternativa más limpia que éstos y con multitud de usos. El objetivo de este trabajo es diseñar un método de reciclado y reutilización de residuos vegetales procedentes de la agricultura intensiva bajo plástico, mediante la fabricación de briquetas, todo ello respetando el medio ambiente. En Almería (sureste de España), la agricultura es capaz de generar 769.500 t año -1 de restos vegetales procedentes de cultivos hortícolas en invernadero, siendo usados actualmente para la obtención de electricidad y compost. Con la maquinaria y procedimientos del presente estudio se ha desarrollado otro posible uso, destoxificando y eliminando los residuos plásticos de la biomasa original para la fabricación de briquetas, y poder destinarlas para combustible de hogares. Los resultados son levemente inferiores a la briqueta comercial procedente de otro residuo vegetal hortícola (no forestal), concretamente de 2.512 kJ kg -1 , en el caso más desfavorable. Por el contrario, el poder calorífico respecto a los dos carbones comunes es significativamente menor, con una diferencia de 12.142 kJ kg -1 . En conclusión, se ha desarrollado y experimentado un procedimiento que permite reutilizar y transformar, a partir de métodos de cultivo ecológico sin agroquímicos y rafias ...

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Briquettes of plant remains from the greenhouses of Almería (Spain)

Callejón-Ferre¹,

López-Martínez

2009

Span. j. agric. res.

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“…Examples of studies where the agricultural or forest waste-to-energy potential and economic analysis are integrated are the ones by Boukis et al (2009), Fernandes and Costa (2010) and G omez et al (2010b; while in Skoulou and Zabaniotou (2007), the environmental aspects are also taken into account.…”

Section: Introductionmentioning

confidence: 99%

Biomass residues for energy production and habitat preservation. Case study in a montado area in Southwestern Europe

Malico

Carrajola

Gomes

et al. 2016

Journal of Cleaner Production

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a b s t r a c tThe use of forest and agricultural residues for energy production presents multiple benefits, but the link between bioenergy and the environment is complex and not all of the energetic options have the same impacts. This work evaluates the net positive effect of valorizing residual biomass in the context of a rural area of Portugal, Estremoz. It focuses on the combined assessment of biomass availability, technoeconomic feasibility and environmental aspects of utilizing forest and agricultural residues to produce bioheat. At first, the energy potential of the residual biomass available in the municipality is evaluated using a geographical information system database. The assessment with RETScreen of the technoeconomic feasibility of replacing electricity by biomass for heating local public schools follows. The results show that around 27 314 t of residues, corresponding to about 267 680 GJ, are produced each year in Estremoz, more than half in montado areas. The use of this biomass for the replacement of the existing electric heating systems of nine local schools by biomass-based ones offers good project profitability. As far as the environment is concerned, the energetic valorization of the residual biomass in Estremoz has multiple benefits. It contributes to climate change mitigation by saving greenhouse gas emissions and promoting the preservation of the traditional extensive uses of the ecosystems. Moreover, a correct vegetation management decreases the fire risk, potentiates the increase in biodiversity, offers better conditions for native species and allows to maintain the ecosystems.

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“…Such waste based bioenergy production plants could exploit not only the locally available waste, but also other biomass waste streams e.g. manure and nonedible agricultural biomass, with the aim to provide a solution in both waste minimization and energy production from cheap and underestimated resources (Skoulou & Zabaniotou, 2007).…”

Section: Introductionmentioning

confidence: 99%

Case Study of Viability of Bioenergy Production from Landfill Gas (LFG)

Vourdoubas¹,

Skoulou²

2016

JAS

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The landfill gas (LFG) produced from the existing landfill site in Heraklion city, Crete island, Greece, is not currently exploited to its full potential. It could however be exploited for power generation and/or combined heat and power (CHP) production in near future by fully unlocking its energy production potential of the gas generated from the landfill site. This gas (LFG) could feed a 1.6 MW el power plant corresponding to the 0.42% of the annually consumed electricity in Crete. The LFG utilization for power generation and CHP production has been studied, and the economics of three energy production scenarios have been calculated. An initial capital investment of 2.4 to 3.2 M €, with payback times (PBT) of approximately 3.5 to 6 years and Net Present Values (NPV) ranging between 2 to 6 M € have been calculated. These values prove the profitability of the attempt of bioenergy production from the biogas produced from the existing landfill site in Heraklion city, Crete. Based on the current economic situation of the country, any similar initiative could positively contribute to strengthening the economy of local community and as a result the country, offering several other socioeconomic benefits like e.g. waste minimization, creation of new job positions etc. by increasing, at the same time, the Renewable Energy Sources (RES) share in energy production sector etc. Apart from the favorable economics of the proposed waste to energy production scheme, all the additional environmental and social benefits make the attempt of a near future exploitation of the landfill gas produced in Heraklion, an attractive short term alternative for waste to bio-energy production.

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Investigation of agricultural and animal wastes in Greece and their allocation to potential application for energy production

Cited by 98 publications

References 34 publications

Briquettes of plant remains from the greenhouses of Almería (Spain)

Briquettes of plant remains from the greenhouses of Almería (Spain)

Biomass residues for energy production and habitat preservation. Case study in a montado area in Southwestern Europe

Case Study of Viability of Bioenergy Production from Landfill Gas (LFG)

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