Aspects of using biomass as energy source for power generation

Tirtea, Raluca-Nicoleta; Mărculescu, Cosmin

doi:10.1515/picbe-2017-0019

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…While the biomass sulphur content is between 0 and approximately 1%, the sulphur content of coal can reach 4%. Using coal in power plants requires important investments in installations of flue gas desulfurization (Tîrtea & Mărculescu 2017). The most widespread method of producing electricity from renewable sources in power plants involves the co-firing of biomass with fossil fuels, utilizing the existing infrastructure (Tokarski 2015).…”

Section: Objectives Of the Studymentioning

confidence: 99%

Clean Development Mechanism (CDM) – Based Development of Grid-Connected Rice Husk-Fuelled Bio-Power Plants in Mekong Delta, Vietnam

Song¹,

Ha²,

Thuan³

et al. 2021

Preprint

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The research is designed for developing the pilot small-scale clean development mechanism bundled project activities in Vietnam electricity/ energy sector. Its overall purpose is to assess the potential of rice husk - fuelled bio-power development projects in Mekong delta. Based on estimating the electricity potential of a bundle of rice husk-fuelled bio-power development projects in Mekong delta with the capacity of 11 MW per project, assessing their CO2 emission reductions (CERs) and CER credits, calculating and comparing their financial indices (NPV, B/C, IRR) in two cases: W/O CDM and W/CDM, the research expects to establish a rice husk energy balance flowchart for the whole Mekong delta in the year 2021 and recommend policies to use for bio-power generation the unused rice husk that is dumped and discharged from local paddy milling centers into rivers and canals, as well as, to put forward a safe and environmentally friendly solution to minimize thoroughly the current serious pollution of rivers and canals in Mekong delta with the increasing unused rice husk quantity in the context is where the sea level rise phenomenon is the strongest in the world .

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Section: Objectives Of the Studymentioning

confidence: 99%

Clean Development Mechanism (CDM) – Based Development of Grid-Connected Rice Husk-Fuelled Bio-Power Plants in Mekong Delta, Vietnam

Song¹,

Ha²,

Thuan³

et al. 2021

Preprint

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“…For energy production, biomass includes all organic matter derived from plant or animal that can be converted to energy. Several studies were focus on the energy recovery of biodegradable residues [3][4][5][6][7]. Also for the search for alternative fuels, many researchers depend on their localization have evaluated the energy potential of certain local agricultural wastes depending on their availability in the region [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Energy Properties of Mixed Biomass Charcoal Derived from Coconut, Palmyra Palm Nuts and Doum Palm Nuts Shells

Kongnine¹,

Kpelou²,

Attah³

et al. 2021

SJEE

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Organic waste generally has low calorific value. Thus, an energy densification procedure is necessary before their use as fuel. Studies have shown that the calorific value of the mixture of charcoals can be higher than the calorific value of the isolated constituents. The aim of this study was to investigate the energy potential of the charcoals produced from coconut shells (CS), palmyra palm nuts shells (PPS), doum palm nuts shells (DPS) and their mixtures in order to identify the rate of mixture allowing the improvement of their calorific value. The raw biomasses were carbonized in a homemade carbonizer. The charcoals obtained were ground into powder. Then samples of, pure biomass charcoals (CS100, PPS100, DPS100), double mixtures of 50% of each biomass charcoals (CS50-PPS50, CS50-DPS50, PPS50-DPS50) and triple mixtures of (CS33-PPS33-DPS33, CS40-PPS30-DPS30, CS50-PPS25-DPS25, CS25-PPS50-DPS25, CS25-PPS25-DPS50) were made (the number corresponds to the content of each biomass charcoal in mass. Then, some of their energy parameters such as lower calorific value and energy per unit volume associated to bulk density were explored. The results showed that for pure samples, coconut shells charcoal presented the highest lower calorific value (28.059 MJ. kg -1 ), followed by charcoal (27.054 MJ/kg), then doum palm nuts shells biochar (26.929 MJ. kg -1 ) and finally 26.111 MJ. kg -1 for palmyra palm nuts shells charcoal. Similarly, with the highest bulk density of 0.625 g/cm 3 coconut shells charcoal presented the highest energy per unit volume (17 536.880 J/cm 3 ), whereas with the lowest bulk density of 0.415 g/cm 3 , doum palm nuts shells charcoal presented the lowest energy per unit volume. Coconut shells biomass charcoal energy per volume unit was significantly higher than that of charcoal used as control (13 905.760 J/cm 3 ). For samples made up of mixtures, the lower calorific values obtained were lower than that of the most energetic pure biomass charcoal. Moreover, by comparing these measurements with the weighted average values of the calorific value of the mixtures, only the samples CS50-PPS25-DPS25 (27.623 MJ/kg) and CS40-PPS30-DPS30 (27.583 MJ/kg) showed an increase of the calorific value, higher than that of wood charcoal bought in the local market and used as reference (27.054 MJ/kg). However, for the others compositions, a decrease in calorific value was recorded.

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Investigation of the effects of pretreatment on the elemental composition of ash derived from selected Nigerian lignocellulosic biomass

Awoyale

Lokhat

Okete

2021

Sci Rep

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Lignocellulosic biomass is an important source of renewable energy and a potential replacement for fossil fuels. In this work, the X-ray fluorescence (XRF) method was used to analyze the elemental composition of raw and pretreated lignocellulosic biomass of cassava peels, corn cobs, rice husks, sugarcane bagasse, yam peels, and mixtures of cassava peels and yam peels, corn cobs and rice husks and all five biomass samples combined. The influence of particle size on elemental properties was investigated by screening the selected biomass into two size fractions, of an average of 300 and 435 µm, respectively. The total concentration of Mg, Al, Si, P, S, Cl, Ca, Ti, Cr, Mn, Fe, Co, Cu, Zn, Sn, Ni, Br, Mo, Ba, Hg, and Pb were determined for each of the biomass samples before and after the different pretreatments adopted in this study. From the results of the analysis, there was a significant reduction in the concentration of calcium in all the analyzed biomass after the alkaline pretreatment with rice husks biomass having the lowest concentration of 66 ppm after the alkaline pretreatment. The sulfur content of the acid pretreated biomass increased considerably which is likely due to the sulfuric acid used for the acid pretreatment. The fact that a mixture of biomass feedstock affects the properties of the biomass after pretreatment was validated in the mixed biomass of cassava peels and yam peels biomass as an example. The concentration of Mg in the mixed biomass was 1441 ppm but was 200 ppm and 353 ppm in individual cassava peels and yam peels respectively. The results of this study demonstrated that pretreated mixtures of biomass have varied elemental compositions, which could be an important factor affecting downstream processes, especially if a hybrid feedstock is used in a large-scale application.

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Aspects of using biomass as energy source for power generation

Abstract: Abstract. Biomass represents an important source of renewable energy in

Cited by 3 publications

References 6 publications

Clean Development Mechanism (CDM) – Based Development of Grid-Connected Rice Husk-Fuelled Bio-Power Plants in Mekong Delta, Vietnam

Clean Development Mechanism (CDM) – Based Development of Grid-Connected Rice Husk-Fuelled Bio-Power Plants in Mekong Delta, Vietnam

Evaluation of Energy Properties of Mixed Biomass Charcoal Derived from Coconut, Palmyra Palm Nuts and Doum Palm Nuts Shells

Investigation of the effects of pretreatment on the elemental composition of ash derived from selected Nigerian lignocellulosic biomass

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