Environmental performance assessment of retrofitting existing coal fired power plants to co-firing with biomass: carbon footprint and emergy approach

Andrić, Ivan; Jamali-Zghal, Nadia; Santarelli, Massimo; Lacarrière, Bruno; Corre, Olivier Le

doi:10.1016/j.jclepro.2014.08.019

Cited by 61 publications

(14 citation statements)

References 29 publications

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“…The use of coal-biomass mixtures for energy generation through combustion and oxy-fuel combustion processes has the main advantage of reducing CO 2 emissions. On average, there is an 18% reduction in CO 2 emissions when 20% of biomass is added to the mixture, which may vary according to the type of coal being used in the process [33]. Studies on using different environments to investigate the influence of biomass percentage on the co-combustion process of coal in different environments can be found in the literature [34e39].…”

Section: Introductionmentioning

confidence: 99%

Comparative study on combustion and oxy-fuel combustion environments using mixtures of coal with sugarcane bagasse and biomass sorghum bagasse by the thermogravimetric analysis

Galina¹,

Luna

Arce³

et al. 2019

Journal of the Energy Institute

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Biomass and coal have different physicochemical properties and thermal behavior. During the co-combustion of coal-biomass mixtures, their thermal behavior varies according to the percentage of each fuel in the mixture. Thereby, this research aims to characterize the thermal behavior of mixtures of coal, sugarcane bagasse, and biomass sorghum bagasse as biomass in simulated combustion (O 2 /N 2) and oxy-fuel combustion (O 2 /CO 2) environments. Experiments have been performed in duplicate on a thermogravimetric analyzer at heating rate of 10 C/min. A uniform granulometry was considered for all materials (63 mm) in order to ensure a homogeneous mixture. Four biomass percentages in the mixture (10, 25, 50 and 75%) have been studied. Based on thermogravimetric (TG) and thermogravimetric (DTG) analyses, parameters such as combustion index, synergism, and activation energy have been determined, as well as the combustion environment influence on these parameters. The results indicate that, although sugarcane bagasse has the lowest activation energy, the thermal behavior of both types of biomass is similar. Thus, biomass sorghum bagasse can be used as an alternative biomass to supply the power required during sugarcane off-season. For both mixtures, optimal results were obtained at 25% of biomass. By analyzing the environment influence on combustion behavior, the results indicate that when N 2 is replaced with CO 2 , it is observed an increase in reaction reactivity, a higher oxidation rate of materials and an improvement in evaluated parameters.

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Section: Introductionmentioning

confidence: 99%

Comparative study on combustion and oxy-fuel combustion environments using mixtures of coal with sugarcane bagasse and biomass sorghum bagasse by the thermogravimetric analysis

Galina¹,

Luna

Arce³

et al. 2019

Journal of the Energy Institute

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“…Alternative fuels are often, in any case, low value materials with low economic value and not too many other uses. Hence, their use in this application is probably environmentally and economically advantageous (Benhelal et al, 2013;Andrić et al, 2014).…”

Section: Resultsmentioning

confidence: 99%

“…In a recent study by Jamali-Zghal et al (2013), Emergy and Carbon Footprint were used together to study to which extent, replacing fossil fuel with biomass for heating is an environmentally friendly solution. In relation to this study, Andrić et al (2014) using the same approach for electricity production determined the maximum supply distance of biomass that allows the cofiring of coal and biomass to be more environmentally efficient than the pure coal combustion. The study showed that the Carbon Footprint and Emergy method are used together to cover all, or at least most, of the significant aspects of the electricity production process that may influence the environment.…”

Section: Introductionmentioning

confidence: 99%

Environmental assessment of different cement manufacturing processes based on Emergy and Ecological Footprint analysis

Mikulčić

Cabezas

Vujanović

et al. 2016

Journal of Cleaner Production

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Due to its high environmental impact and energy intensive production, the cement industry needs to adopt more energy efficient technologies to reduce its demand for fossil fuels and impact on the environment. Bearing in mind that cement is the most widely used material for housing and modern infrastructure, the aim of this paper is to analyse the Emergy and Ecological Footprint of different cement manufacturing processes for a particular cement plant. There are several mitigation measures that can be incorporated in the cement manufacturing process to reduce the demand for fossil fuels and consequently reduce the CO 2 emissions. The mitigation measures considered in this paper were the use of alternative fuels and a more energy efficient kiln process. In order to estimate the sustainability effect of the aforementioned measures, Emergy and Ecological Footprint were calculated for four different scenarios. The results show that Emergy, due to the high input mass of raw material needed for clinker production, stays at about the same level. However, for the Ecological Footprint, the results show that by combining the use of alternative fuels together with a more energy efficient kiln process, the environmental impact of the cement manufacturing process can be lowered.

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“…However, at the same time, the various unfavorable environmental effects are simultaneously produced [21], including carbon emissions and their induced disasters [22]. Responding to the whole process of coal exploration and utilization, the carbon footprint is traced and measured by coal supply chains from mining, selection and washing, transportation, distribution and consumption [23,24], especially in the process of power generation [25,26]. Besides, the research into carbon emissions from energy consumption lists is gradually transited to the side view of product consumption [27][28][29], and the relevant method for carbon emissions is adopted to estimate the emission coefficient of each stage in the coal-extracted and -fired process [30,31].…”

Section: Introductionmentioning

confidence: 99%

Coal Supply Chains: A Whole-Process-Based Measurement of Carbon Emissions in a Mining City of China

et al. 2017

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Abstract:The purpose of the study is to understand the carbon emissions in the coal supply chains of a mining city. The paper employed a conceptual methodology for the estimation of carbon emissions in the four processes of coal mining, selection and washing, transportation and consumption. The results show that the total carbon emission of the coal supply chain in Wu'an is up to 3.51 × 10 10 kg and is mainly sourced from the coal mining and consumption, respectively accounting for 13.10% and 84.62%, which indicates that deep coal processing plays a more critical determinant in coal production and consumption. Among the pillar industries, the carbon emissions from the steel industry accounts for 85.41% of the total in the coal consumption process, which indicates that the structure of carbon emissions is dependent on the local industrial structure. Additionally, the carbon directly from CO 2 accounts for 89.46%. Our study is not only to be able to supply references for the formulation strategy of a low carbon city, but also to provide a new approach to urban development patterns with a new view for coal resource management.

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Environmental performance assessment of retrofitting existing coal fired power plants to co-firing with biomass: carbon footprint and emergy approach

Cited by 61 publications

References 29 publications

Comparative study on combustion and oxy-fuel combustion environments using mixtures of coal with sugarcane bagasse and biomass sorghum bagasse by the thermogravimetric analysis

Comparative study on combustion and oxy-fuel combustion environments using mixtures of coal with sugarcane bagasse and biomass sorghum bagasse by the thermogravimetric analysis

Environmental assessment of different cement manufacturing processes based on Emergy and Ecological Footprint analysis

Coal Supply Chains: A Whole-Process-Based Measurement of Carbon Emissions in a Mining City of China

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