Extractives, acidity, buffering capacity, ash and inorganic elements of black locust wood and bark of different clones and origin

Passialis, Costas; Voulgaridis, Elias; Αδαμόπουλος, Στέργιος; Matsouka, Maria

doi:10.1007/s00107-008-0254-4

Cited by 27 publications

(16 citation statements)

References 1 publication

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“…The white wood fraction of untreated WTC contained approximately 7% NSC (including ash and extractives), while the bark fraction contained 35% (Supplementary Material, Table S.1). This nding agrees with earlier reports by Passialis et al, where they stated that bark of black locust has higher ash and extractives content than other wood components (20). Dou et al (3) also compared the chemical characteristics of different fractions of 2-year-old poplar, and they reported that extractives content in bark was about two times higher than that in white wood, while ash content in bark was about ve times higher than that in white wood.…”

Section: Non-structural Components (Ash and Extractives)supporting

confidence: 90%

Novel ethanol production using biomass preprocessing to increase ethanol yield and reduce overall costs

Pascoli

Suko

Gustafson

et al. 2020

Preprint

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Background: Ethanol biorefineries need to lower their overall production costs to become economically feasible. Two strategies to achieve this are to reduce costs by using cheaper feedstocks or to increase the ethanol production yield. Low-cost feedstocks usually have high non-structural components (NSC) content, therefore a new process is necessary to accommodate these feedstocks and overcome the negative effects of NSC. This study developed a novel ethanol biorefinery process including a biomass preprocessing step that enabled the use of lower-cost feedstocks while improving ethanol production without detoxification (overliming). Two types of poplar feedstocks were used, low-quality whole-tree chips (WTC) and high-quality clean pulp chips (CPC), to determine if the proposed process is effective while using feedstocks with different NSC contents.Results: Technical assessment showed that acidic preprocessing increased the monomeric sugar recovery of WTC from 73.2% (untreated) to 87.5% due to reduced buffering capacity of poplar, improved sugar solubilization during pretreatment, and better enzymatic hydrolysis conversion. Preprocessing alone significantly improved the fermentability of the liquid fraction from 1-2% to 49-56% for both feedstocks, while overliming improved it to 45%. Consequently, it was proposed that preprocessing can substitute for the detoxification step. The economic assessment revealed that using poplar WTC via the new process increased annual ethanol production of 10.5 million liters when compared to using CPC via overliming (base case scenario). Also, savings in total operating costs were about $10 million per year when using cheaper poplar WTC instead of CPC, and by using recycled water for preprocessing lowered its total operating costs by 45-fold.Conclusions: The novel process developed in this study was successful in increasing ethanol production while decreasing overall costs, thus facilitating the feasibility of lignocellulosic ethanol biorefineries. Key factors to achieving this outcome included substituting overliming by preprocessing, enabling the use of lower-quality feedstock, increasing monomeric sugar recovery and ethanol fermentation yield, and using recycled water for preprocessing. In addition, preprocessing enabled the implementation of an evaporator-combustor downstream design, resulting in a low-loading waste stream that can be treated in a wastewater treatment plant with a simple configuration.

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Section: Non-structural Components (Ash and Extractives)supporting

confidence: 90%

Novel ethanol production using biomass preprocessing to increase ethanol yield and reduce overall costs

Pascoli

Suko

Gustafson

et al. 2020

Preprint

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“…Untuk parameter KSS, nilai untuk jati adalah 0,4% (Martawijaya et al 1981) sedangkan kisaran dari provenans kayu jati bagian teras dari India, Ghana, dan Indonesia yaitu 0,22-0,66% (Kjaer et al 1998) sehingga menunjukkan lebih tingginya nilai yang diperoleh dari beberapa sampel dari Gunungkidul ini. Secara umum, kayu tropis dicirikan oleh tingginya kadar abu dan silika dibandingkan kayu tumbuh di daerah dingin (Fengel & Wegener 1989 Hungaria yang secara deskriptif nilai kecenderungan sedikit perbedaan antara tempat tumbuh tersebut (Passialis et al 2008). Diduga ada faktor lain selain kondisi tanah asal yang berpengaruh terhadap sebaran unsur anorganik seperti iklim atau kondisi lingkungan lainnya (Fengel & Wegener 1989).…”

Section: Penyiapan Sampelunclassified

Studi Mutu Kayu Jati di Hutan Rakyat Gunungkidul. VI. Kadar Zat Anorganik dan Keasaman

Lukmandaru

Hidayah

2017

Jurnal Ilmu Kehutanan

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“…When a high buffer capacity wood is used, a high amount of acid (generally a H 2 SO 4 solution) or alkali (generally a NaOH solution) must be added to change the overall mixture pH. It is important to mention that there is also a notable difference in pH and buffer capacity between the same tree wood and bark [ 13 , 14 ]. This observation enables one to realize that these resources should be separated and separately used in mixed panels manufacturing.…”

Section: Introductionmentioning

confidence: 99%

The Buffer Effect of Different Wood Species and the Influence of Oak on Panel Composites Binders

Policardi

Thébault

2020

Polymers

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The buffer action of certain wood species can intensely affect the curing and hardening of some thermosetting wood adhesives. The present article presents a quantification of such buffering effects, determined under controlled conditions, in various wood species. The buffer capacity of oak has been found to be rather extreme and is likely to affect quite heavily the ability of urea-formaldehyde (UF) and melamine-urea-formaldehyde (MUF) wood panel adhesives in industrial operations. A variation of the buffer capacity of furnishes containing between 0% and 30% oak chips has been investigated. This was correlated with the internal bond (IB) strength of MUF bonded laboratory particleboards. The wood mixture buffering capacity increases with the oak content, while the panel IB strength decreases.

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Extractives, acidity, buffering capacity, ash and inorganic elements of black locust wood and bark of different clones and origin

Cited by 27 publications

References 1 publication

Novel ethanol production using biomass preprocessing to increase ethanol yield and reduce overall costs

Novel ethanol production using biomass preprocessing to increase ethanol yield and reduce overall costs

Studi Mutu Kayu Jati di Hutan Rakyat Gunungkidul. VI. Kadar Zat Anorganik dan Keasaman

The Buffer Effect of Different Wood Species and the Influence of Oak on Panel Composites Binders

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