Enhancement of waste biomass fuel properties by sequential leaching and wet torrefaction

Gong, Sung-Ho; Im, Hyeon-Soo; Um, Min Young; Lee, Hyoung-Woo; Lee, Jae Won

doi:10.1016/j.fuel.2018.11.069

Cited by 52 publications

(21 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These outliers may suggest that minor reactions are occurring. The consistent yield across all parameters indicates the acetic acid was mostly present in the unreacted biomass and is easily solubilised (Gong et al 2019). This seems to indicate that acetic acid yields are not significantly affected by the reaction parameters, but are rather inherent to feedstock composition.…”

Section: Acetic Acidmentioning

confidence: 69%

Solid residue and by-product yields from acid-catalysed conversion of poplar wood to levulinic acid

et al. 2019

View full text Add to dashboard Cite

This study examines the yields of solid residue and by-product from the microwave-assisted acid hydrolysis of lignocellulosic poplar wood for levulinic acid production. The aim of this study was to optimise levulinic acid production via response surface methodology (RSM) and also investigate the effect of reaction conditions on other products such as furfural, solid residue, formic acid and acetic acid yields. A maximum theoretical levulinic acid yield of 62.1% (21.0 wt %) was predicted when reaction conditions were 188 °C, 126 min and 1.93 M sulphuric acid, with a corresponding solid residue yield of 59.2 wt %. Furfural from the hydrolysis of hemicellulose was found to have significantly degraded at the optimum levulinic acid yield conditions. The investigation of formic acid yields revealed lower formic acid yields than stoichiometrically expected, indicating the organic acid reactions under microwave-assisted hydrolysis of lignocellulose. The solid residue yields were found to increase significantly with increasing reaction time and temperature. The solid residue yields under all conditions exceeded that of levulinic acid and, therefore, should be considered a significant product alongside the high-value compounds. The solid residue was further examined using IR spectra, elemental analysis and XRF for potential applications. The overall results show that poplar wood has great potential to produce renewable chemicals, but also highlight all by-products must be considered during optimization.

show abstract

Section: Acetic Acidmentioning

confidence: 69%

Solid residue and by-product yields from acid-catalysed conversion of poplar wood to levulinic acid

et al. 2019

View full text Add to dashboard Cite

show abstract

“…In 2019, Gong et al [115] applied a first step of water leaching on empty fruit bunches from oil palm, rice straws, and sugarcane bagasse. Subsequently, torrefaction was performed at 200 • C for 5 min.…”

Section: Pre-and Post-treatmentsmentioning

confidence: 99%

“…Leaching allowed the removal of the majority of ash and also practically reduced the chlorine and potassium concentrations. After this treatment, heating values increased by 4.42% in the empty fruit bunches, 4.68% in the rice straw, and 5.30% in the sugarcane bagasse [115].…”

Section: Pre-and Post-treatmentsmentioning

confidence: 99%

Pellet Production from Woody and Non-Woody Feedstocks: A Review on Biomass Quality Evaluation

Picchio

Latterini²,

Venanzi

et al. 2020

Energies

View full text Add to dashboard Cite

Forest and agricultural biomass are important sources of renewable and sustainable fuel for energy production. Their increasing consumption is mainly related to the increase in global energy demand and fossil fuel prices but also to the limited availability of petroleum and the lower environmental impact of these biomass compared with other non-renewable fuels. In particular, the pellet sector has seen important developments in terms of both production and the number of installed transformation plants. In addition, pellet production from non-woody biomass is increasing in importance. One of the fundamental aspects for the correct and sustainable use of a biofuel is evaluation of its quality. This is even more important when dealing with pellet production, considering the broad spectrum of possible raw materials for pelletizing. Considering the significant number of papers dealing with pellet quality evaluation and improvement in the last decade, this review aims to give the reader an overall view of the most current knowledge about this large and interesting topic. We focused on pellets of agricultural and forestry origin and analyzed papers regarding the specific topic of pellet quality evaluation and improvement from the last five years (2016–2020). In particular, the review findings are presented in the following order: the influence of different agro-forest management systems on pellet quality; analysis of pellets from pure feedstocks (no blending or binders); the influence of blending and binders on pellet quality; and the influence of pre and post treatments. Finally, a brief discussion about actual research lacks in this topic and the possibilities for future research are presented. It is important to underline that the present review is focused on the influence of the biomass characteristics on pellet quality. The effects of the process parameters (die temperature, applied pressure, holding time) on pellet features are not considered in this review, because that is another very large topic deserving a dedicated paper.

show abstract

“…[87] The product analysis revealed that wet torrefaction exhibit superior and coallike properties to dry torrefaction. [99,100] An experimental investigation on the dry and hydrothermal torrefaction revealed that dry torrefaction displayed better energy density than hydrothermal torrefaction, though this property decreased substantially with an increase in TT. [38,91]…”

Section: Torrefactionmentioning

confidence: 99%

Generation of Sustainable Energy from Agro‐Residues through Thermal Pretreatment for Developing Nations: A Review

Ibitoye

Jen

Mahamood

et al. 2021

Adv Energy and Sustain Res

View full text Add to dashboard Cite

Energy is a prerequisite for any nation's industrial, social, and economic advancements. [1][2][3][4] Energy can broadly be categorized into renewable and nonrenewable energies. Nonrenewable energies are energy that cannot be replenished over a short period. Examples of such energy are coal, nuclear energy, natural gas, and crude oil. Renewable energies, in contrast, are those energies that are replenishable over a short period. This form of energy includes solar, hydro, tidal, wind, biomass energy, etc. Biomass energy is the energy generated from biomass materials. Biomass material could be woody (such as teak, mahogany), nonwoody (such as agro-residues, industrial waste), and animal materials. [5] Agroresidues are described as all organic materials that are generated as byproducts from agricultural activities. These byproducts constitute the main part of biomass feedstock's total annual production, which forms an essential and sustainable source of energy for industrial and domestic applications. [6] They are material that are of benefit to humankind, though their economic benefits are less than the cost of transformation for advantageous use. [7] Agro-residues can be divided into residues generated on the field and residues generated during the processing of agricultural products. [8] Field-based residues include but are not limited to tobacco stalks, maize stalks, sugar cane tops, rice straw, soybean straw/pods, and cocoa pods. In contrast, process-based include peanuts shell, rice husk, maize cob, bagasse, and coffee husk. Agro-residues are available in large quantities in an area with a high level of agricultural activities. [9] In developing nations, major agricultural activities are recorded in the rural areas, resulting in a larger quantity of agro-residues in these areas. [10,11] Most of the time, the farmers in developing nations' dump these residues in an open field or

show abstract

Enhancement of waste biomass fuel properties by sequential leaching and wet torrefaction

Cited by 52 publications

References 21 publications

Solid residue and by-product yields from acid-catalysed conversion of poplar wood to levulinic acid

Solid residue and by-product yields from acid-catalysed conversion of poplar wood to levulinic acid

Pellet Production from Woody and Non-Woody Feedstocks: A Review on Biomass Quality Evaluation

Generation of Sustainable Energy from Agro‐Residues through Thermal Pretreatment for Developing Nations: A Review

Contact Info

Product

Resources

About