Improvement of Biomass Fuel Properties for Rice Straw Pellets Using Torrefaction and Mixing with Wood Chips

Kizuka, Ryosuke; Ishii, Kazuei; Ochiai, Satoru; Sato, Masahiro; Yamada, Atsushi; Nishimiya, Kouei

doi:10.1007/s12649-020-01234-8

Cited by 13 publications

(3 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pellet production takes place by extrusion, which involves passing semi-dry biomass that has been previously processed into dust, sawdust, or shavings through a hole that is a few millimeters in size to create small cylinders that are cut to the necessary length and then cooled [ 27 , 28 ]. This procedure lowers the cost of handling, transport, and storage by increasing the bulk density of the biomass [ 29 , 30 , 31 ]. The statistics from FAOSTAT [ 32 ], which illustrate the rising level of pellet production globally ( Figure 1 ), highlight the significant importance of the pelletization process for energy production.…”

Section: Introductionmentioning

confidence: 99%

Pellet Production from Pruning and Alternative Forest Biomass: A Review of the Most Recent Research Findings

et al. 2023

View full text Add to dashboard Cite

Typically, coniferous sawdust from debarked stems is used to make pellets. Given the high lignin content, which ensures strong binding and high calorific values, this feedstock provides the best quality available. However, finding alternative feedstocks for pellet production is crucial if small-scale pellet production is to be developed and used to support the economy and energy independence of rural communities. These communities have to be able to create pellets devoid of additives and without biomass pre-processing so that the feedstock price remains low. The features of pellets made from other sources of forest biomass, such as different types of waste, broadleaf species, and pruning biomass, have attracted some attention in this context. This review sought to provide an overview of the most recent (2019–2023) knowledge on the subject and to bring into consideration potential feedstocks for the growth of small-scale pellet production. Findings from the literature show that poor bulk density and mechanical durability are the most frequent issues when making pellets from different feedstocks. All of the tested alternative biomass typologies have these shortcomings, which are also a result of the use of low-performance pelletizers in small-scale production, preventing the achievement of adequate mechanical qualities. Pellets made from pruning biomass, coniferous residues, and wood from short-rotation coppice plants all have significant flaws in terms of ash content and, in some cases, nitrogen, sulfur, and chlorine content as well. All things considered, research suggests that broadleaf wood from beech and oak trees, collected through routine forest management activities, makes the best feasible feedstock for small-scale pellet production. Despite having poor mechanical qualities, these feedstocks can provide pellets with a low ash level. High ash content is a significant disadvantage when considering pellet manufacture and use on a small scale since it can significantly raise maintenance costs, compromising the supply chain’s ability to operate cost-effectively. Pellets with low bulk density and low mechanical durability can be successfully used in a small-scale supply chain with the advantages of reducing travel distance from the production site and storage time.

show abstract

Section: Introductionmentioning

confidence: 99%

Pellet Production from Pruning and Alternative Forest Biomass: A Review of the Most Recent Research Findings

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Many scholars have studied the co-torrefaction of biomass. For example, Kizuka [ 11 ] studied the fuel performance of rice straw pellets after the torrefaction of a mixture of rice straw and wood chips and found that when the reaction temperature was 250 °C and 50% wood chips were added, the calorific value of the mixed biochar increased from 16.09 MJ/kg to 16.8 MJ/kg and the energy density increased from 11.53 GJ/m³ to 12.04 GJ/m³ compared to that by the torrefaction of only rice straw; thus, the fuel utilization efficiency increased by using both wood chips and rice straw. Furthermore, Rodríguez [ 12 ] found that adding PP during vegetable waste torrefaction increased the calorific value and reduced the AC.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Briquette Fuels by Co-Torrefaction of Residual Biomass and Plastic Waste Using Response Surface Methodology

et al. 2023

View full text Add to dashboard Cite

Combining biomass, a clean and renewable energy source, with waste plastic, which serves as a good auxiliary fuel, can produce high-quality clean fuel. The performance of biomass-derived fuel can be improved by torrefaction. This study optimized the co-torrefaction of fungus bran and polypropylene (PP) waste plastic to obtain clean solid biofuel with high calorific value and low ash content (AC) using response surface methodology. Two sets of mixed biochars were investigated using a multiobjective optimization method: mass yield–higher heating value–ash content (MY-HHV-AC) and energy yield–ash content (EY-AC). PP increased the heat value, decreased AC, and acted as a binder. The optimal operating conditions regarding reaction temperature, reaction time, and PP blending ratio were 230.68 °C, 30 min, and 20%, respectively, for the MY-HHV-AC set and 220 °C, 30 min, 20%, respectively, for the EY-AC set. The MY-HHV-AC set had properties close to those of peat and lignite. Furthermore, compared with that of the pure biochar, the AC of the two sets decreased by 15.71% and 14.88%, respectively, indicating that the prepared mixed biochars served as ideal biofuels. Finally, a circular economy framework for biobriquette fuel was proposed and prospects for preparing pellets provided.

show abstract

“…A new process was put forward as follows. The biomass is charred first and then ground to powder [4]. An increasing amount of attention is given to the preparation technology of this new biomass that can be used to form carbon fuel.…”

Section: Introductionmentioning

confidence: 99%

Influence of molding parameters on the properties of molding fuel derived form agroforestry biomass waste by pyrolysis

Sun

et al. 2021

E3S Web Conf.

View full text Add to dashboard Cite

Biochar is now recognized as an excellent fuel with excellent performance in the combustion process and environmental friendness. As the main raw material of biochar, agricultural, and forestry biomass waste has a high waste rate. Therefore, researchers have conducted long-term research on the technology of generating biochar from agricultural and forestry biomass. Based on the current research and analysis of the existing molding fuel technology, the influence of different research parameters on the preparation of different biomass fuel is explored. The influences of molding temperature, molding pressure, raw material moisture content and the ratio of adhesive to toner on the performance of biomass fuel are focused on analysis. Finally, a conclusion is drawn based on the experimental data.

show abstract

Improvement of Biomass Fuel Properties for Rice Straw Pellets Using Torrefaction and Mixing with Wood Chips

Cited by 13 publications

References 34 publications

Pellet Production from Pruning and Alternative Forest Biomass: A Review of the Most Recent Research Findings

Pellet Production from Pruning and Alternative Forest Biomass: A Review of the Most Recent Research Findings

Optimization of Briquette Fuels by Co-Torrefaction of Residual Biomass and Plastic Waste Using Response Surface Methodology

Influence of molding parameters on the properties of molding fuel derived form agroforestry biomass waste by pyrolysis

Contact Info

Product

Resources

About