Kiwi Clear‐Cut: First Evaluation of Recovered Biomass for Energy Production

Manzone, Marco; Gioelli, F.; Balsari, P.

doi:10.3390/en10111837

Cited by 9 publications

(7 citation statements)

References 44 publications

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“…The biomass available per hectare of harvested apple pruning calculated in this study was 1.25 t FM ·ha −1 , which is within the range of data obtained in permanent orchards and plantations by other researchers [20,41,51]. Moreover, the total energy balance is positive (EB = 11.94 GJ·ha −1 ), which promotes this activity in contrast to the mulching process characterized by negative energy balance rated on the value of EB = −0.28 GJ·ha −1 .…”

Section: Discussionsupporting

confidence: 64%

Harvesting and Baling of Pruned Biomass in Apple Orchards for Energy Production

Dyjakon

2018

Energies

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Pruning residues belong to the agricultural wastes generated in the agro-food processing sector, whose energetic potential can have a significant influence on the local energy market. This study is focused on the assessment of the feasibility of using apple tree pruning residues in the form of bales for energetic purposes. The research was performed in a commercial apple orchard located in the central-western part of Poland, an area characterized by the largest concentration of apple orchard in Europe. The biomass yield, pruned bales quality, energy input and output flow, as well as the economic sustainability of the pruning-to-energy strategy were evaluated. The results indicated the available collected biomass potential in an amount of 0.69 t DM ·ha −1 per year. Pruned biomass analysis showed a moisture content of 45.1% in the fresh material, the ash content was 0.8% dry mass, and the lower heating value was 18.05 MJ·kg −1 dry mass. Total production cost, including all steps and avoided cost of mulching, was 74.7 €·t −1 dry mass. Moreover, the net energy balance of this value chain was very positive, giving a value of ca. 12,000 MJ·ha −1 per year. As a result, the yearly harvested pruned biomass may be considered a good energy source for local heating systems.

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Section: Discussionsupporting

confidence: 64%

Harvesting and Baling of Pruned Biomass in Apple Orchards for Energy Production

Dyjakon

2018

Energies

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“…The use of windrowers increased the harvesting costs of one hectare by 23% in Orchard 1, and by 30% in Orchard 2. The main reason for this was the longer operation time required to harvest the pruning residues from one hectare, which is related to labor and variable costs [49]. However, the use of windrowers increases the PB, which leads to higher cash flows from pruning residues selling.…”

Section: Discussionmentioning

confidence: 99%

The Influence of the Use of Windrowers in Baler Machinery on the Energy Balance during Pruned Biomass Harvesting in the Apple Orchard

Dyjakon

2018

Energies

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The effective operation of machinery in agricultural processes is crucial in terms of energy efficiency, economic consequences, and environmental footprint. The agricultural sector provides many opportunities to bring biomass to the market. An interesting option is to collect the branches after a regular pruning of apple orchards in the winter-spring season. As the harvesting of pruning residues in apple orchards for energy purposes demands additional primary energy, any measures that increase the amount of collected biomass are desirable. In this study, the influence of pruning harvesting using a baler with and without windrowers on pruning biomass yield, energy input and output flow, energy balance, CO 2 emission reduction, and costs of that operation in apple orchards was investigated. The performed analysis, based on the results from two apple orchards, revealed that the energy balance was positive for both variants. However, in comparison with the harvesting process without windrowers, the use of windrowers in these two orchards caused an increase in pruning biomass yield by 0.45 tDM·ha −1 per year (25%) and 0.54 tDM·ha −1 per year (33%), respectively. The energy balance increased up by ca. 0.8-1.0 GJ·ha −1 , although the fuel consumption by the tractor was higher. The use of windrowers did not significantly increase the costs, but resulted in remarkably better income from biomass selling (ca. €30-40 ha −1 ). Finally, the increase in the mass of harvested biomass led to a higher potential CO 2 emission reduction. As a result, pruning biomass is an attractive source of energy, especially for local markets.Energies 2018, 11, 3236 2 of 15 than 60% of the current renewable energy production in the EU-28, and the majority is sourced from solid biomass [5]. Due to the numerous advantages of using biomass, much attention has been paid to developing advanced technologies to enable its conversion to energy and fuels. The main source of solid biomass is forestry [6], but significant amounts are produced by agriculture as well, including energy crops and agricultural residues [7]. Agricultural residues can be divided into three main groups: primary crop residues, secondary crop residues, and animal farming residues. Primary crops residues are produced on the field (like straw, prunings, and other cuttings). Secondary crop residues are generated during processing of harvested products (like pomace or sunflower husks). Animal farming residues are produced during animal breeding (like manure).Primary crops residues require collection using suitable machinery [8,9]. Agriculture residues are generally collected in the form of round bales, square bales, or in their chopped form [10]. As a result, there is a demand for additional energy for recovery, harvesting, processing, storage, and transportation to prepare such biomass for energy purposes [11,12]. The limited season for harvesting crop residues results in seasonal supply of agriculture-based biomass [13]. Among the crop residues, the seasonal pruning of fruit orchards r...

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“…The higher heating value (HHV) was determined in a calorimetric bomb IKA C200 (IKA, Lucknow, India) in accordance with PN-EN ISO 18125:2017-07 [39]. Next, the lower heating value (LHV) was calculated as a function of the higher heating value (HHV) and moisture content in the biomass according to [40].…”

Section: Proximate Analysis Of Biomassmentioning

confidence: 99%

Determination of Strength Properties of Energy Plants on the Example of Miscanthus × Giganteus, Rosa Multiflora and Salix Viminalis

2019

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Energy from biomass accounts for 70% of all renewables used for heat and electricity production. Such a significant share of biomass determines the need for the investigation of their mechanical properties, as most of the lignocellulosic material requires cutting, chipping or milling before its utilization for energy purposes. Therefore, the knowledge about cutting resistance, bending stiffness, and impact strength of the energy plants is very important. The values of these parameters are used in the proper selection of shredding machines and their elements, wrapping nets or determination of power demand during raw material conversion. This paper presents the results of research on the mechanical properties of selected energy plants. The scope of the research included three different plant species: Miscanthus × giganteus, Rosa multiflora, and Salix viminalis, investigated in terms of cutting resistance, bending stiffness and impact strength of stalks. The results showed that the average stalk cutting resistance for the rotation speed of 4200 RPM was 0.17 N·mm−2 for the Miscanthus × giganteus, 0.15 N·mm−2 for the Rosa multiflora and 0.2 N·mm−2 for the Salix viminalis. Meanwhile, for a rotation speed of 3200 RPM, the cutting resistance amounted to 0.15 N·mm−2 for Miscanthus × giganteus, 0.16 N·mm−2 for Rosa multiflora and 0.18 N·mm−2 for Salix viminalis. For the impact measurements, the Salix viminalis exceeded 40 J·mm−2 of absorbed energy. Meanwhile, the average impact strength value for the Rosa multiflora was 0.53 J·mm−2 and for the Miscanthus × giganteus was 0.22 J·mm−2. The bending stiffness of Miscanthus × giganteus at an average modulus of 3.44 GPa was 1.1 N·m2 for the basal zone, 0.78 N·m2 for the central zone, and 0.72 N·m2 of the apical zone. For the average Young’s modulus of 0.19 GPa, the bending stiffness of the Rosa multiflora reached a value of 0.64 N·m2 for the basal zone, 0.23 N·m2 for the central zone, and 0.28 N·m2 for the apical zone. The Salix viminalis, with an average modulus of elasticity of 0.23 GPa, achieved bending stiffness in the basal zone of 0.99 N·m2, the central zone 0.33 N·m2, and the tip zone 0.38 N·m2. This research makes it possible to expand our knowledge in the field of biomass processing and construction of agricultural machinery with higher processing efficiency.

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Kiwi Clear‐Cut: First Evaluation of Recovered Biomass for Energy Production

Cited by 9 publications

References 44 publications

Harvesting and Baling of Pruned Biomass in Apple Orchards for Energy Production

Harvesting and Baling of Pruned Biomass in Apple Orchards for Energy Production

The Influence of the Use of Windrowers in Baler Machinery on the Energy Balance during Pruned Biomass Harvesting in the Apple Orchard

Determination of Strength Properties of Energy Plants on the Example of Miscanthus × Giganteus, Rosa Multiflora and Salix Viminalis

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