Pyrolysis of Biomass

Wang, Shurong; Luo, Zhongyang

doi:10.1515/9783110369632

Cited by 43 publications

(26 citation statements)

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“…Onset temperature of samples were shown differences and the maximum mass loss rates determined 9.11%/min at 328 °C and 10.0%/min at 350 °C, respectively as seen Figure 6b. The hemicellulose/lignin ratio in the sample causes this difference in maximum loss rates [53]. From the data given in Table 2, H/L ratio was found to be 0.597 in the FCell sample and 0.487 in the HCell sample.…”

Section: The Characterization Of Lignocellulose-hbn Nanobiocompositementioning

confidence: 92%

The nanobiocomposites synthesis from biomass and its characterization

Göncü¹,

Hoşgün²,

Ay³

et al. 2018

Journal of Boron

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This study was conducted to evaluate the suitability of using hexagonal boron nitride (hBN) as reinforcement in natural fibres obtained from hazelnut shell (F) and poppy straw (H). Raw materials were treated with alkali to enrich the cellulose content by removing lignin and hemicellulose. The nanobiocomposite synthesis was performed with 4% and 8% of hBN. Lignin, cellulose and hemicelluloses contents of biomass were determined. Cellulose content was almost increased 3-fold and 2-fold after pretreatment of hazelnut shell (FCell) and poppy straw (HCell), respectively. Strong bands at 812 and 1380cm -1 corresponding to hBN were observed in the FTIR. SEM images showed that hBN is retained on the pretreated natural fibres. Adsorbed hBN on the structure was highest in the microcrystalline cellulose (Cell) (91.5%), followed by FCell (80.5%) and HCell (50.5%). Nanobiocomposites containing lignocellulose and hBN may be recommended for use in polymer matrix structures where thermal properties need to be altered.

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Section: The Characterization Of Lignocellulose-hbn Nanobiocompositementioning

confidence: 92%

The nanobiocomposites synthesis from biomass and its characterization

Göncü¹,

Hoşgün²,

Ay³

et al. 2018

Journal of Boron

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“…As illustrated in Figure 1, the three main components are unevenly distributed in the cell wall as the skeleton, the connecting material, and the hard solid, respectively. Cellulose macromolecules regularly assemble to form tough microfibers that serve as the skeletal material of the cell wall, and the inner space is packed with hemicellulose linking materials and amorphous lignin [15]. Cellulose is linked to hemicellulose and lignin molecules The structure of lignocellulosic biomass consists of lignin, cellulose, and hemicellulose [14].…”

Section: Compositional Of Lignocellulosic Biomassmentioning

confidence: 99%

The Biomass Waste Pyrolysis for Biopesticide Application

Mashuni¹,

Jahiding²

2022

Recent Perspectives in Pyrolysis Research

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The pyrolysis method has been used in various fields and has attracted the attention of many researchers so that this method can be applied to treat biomass waste. Pyrolysis of biomass occurs through heating a substance with limited oxygen so that the decomposition of complex compounds such as lignocellulose into simpler compounds occurs. The heat energy of the pyrolysis process encourages the oxidation of biomass so that complex carbon molecules break down into carbon and bio-oil. Pyrolysis of biomass for coconut shells, cashew nut shells, and cocoa pod husk was carried out at a temperature of 400–600°C with a flow rate of 6–7°C/min. The content of bio-oil compounds from its biomass based on the analysis of gas chromatography–mass spectroscopy obtained phenolic acid, pyrimidine derivatives, amines, carbamate acids, furans, esters derivatives, pyridine, ketones, furans, and aldehydes that can be used as active compounds for biopesticides.

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“…Ao compararmos o conjunto de amostras com aumento na proporcionalidade de L, verificamos que a amostra ML12, ocorre um decréscimo dos valores de ΔH na faixa dentro do intervalo 0,10<α<0,40, evidenciando que uma maior proporção de L leva a inserção de quantidade, em excesso, de carbonato de cálcio e, consequentemente, de íons cálcio (Wang and Luo, 2016). A proximidade dos valores de ΔH para a faixa compreendida entre 0,3 e 0,5, indicam a ocorrência da decomposição da celulose nessa extensão.…”

Section: Tabela 3 -δH Para Os Precursores M L E Amostras Ml11 Ml12 E ...unclassified

Enriquecimento de Pectina através da técnica squeeze-flow empregando a concha da Lucina Pectinata como fonte de carbonato de cálcio

2022

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A discussão mundial e adoção de práticas relacionadas à sustentabilidade, culminaram no reaproveitamento de resíduos provenientes da agroindústria em concordância com os 3R's empregados no país. Segundo dados atuais do IBGE, o Brasil em 2020, produziu 690 mil toneladas de maracujá amarelo (M) - (Passiflora edullis f. flavicarpa), sendo o maior produtor mundial. Contudo cerca de 70% deste percentual é de casca e semente, que se descartados de forma inadequada pode causar impactos ao meio ambiente. A casca deste fruto, é composta por celulose, hemicelulose, lignina e pectina, que se conectam por meio de pontes de cálcio intermoleculares, sendo capazes de estabelecer interações com espécies externas à sua estrutura, tornando-a promissora para o reaproveitamento. Neste sentido, este estudo visou reaproveitar as conchas da Lambreta(L) - Lucina pectinata como fonte de carbonato de cálcio empregando-a no enriquecimento da casca do maracujá amarelo fazendo uso da técnica squeeze-flow. As investigações foram realizadas a partir da variação da proporcionalidade entre as duas biomassas, gerando novos materiais que foram denominados ML11, ML12, ML13, LM12 e LM13. Os efeitos da mistura das biomassas, foram evidenciados através das técnicas de caracterização: FTIR, TG/DTG, DSC e MEV. Os eventos de degradação térmica das amostras foram avaliados através dos parâmetros cinéticos e termodinâmicos pelo método de Kissinger. Os resultados obtidos constataram um aumento na estabilidade térmica dos constituintes das fibras do maracujá amarelo pelo enriquecimento com carbonato de cálcio oriundo da Lucina pectinata nas amostras ML11, ML12. Pode-se notar que a baixa energia de ativação nas amostras LM12 e ML13 conduz à diminuição da estabilidade térmica desses materiais indicando uma condição ideal na proporcionalidade entre as duas biomassas envolvidas, favorecendo a aplicação desses materiais em processos termoquímicos. Por meio das observações realizadas nos experimentos de FTIR foi possível observar a supressão da banda relacionada ao estiramento -CO (1605 cm-1) indicando a eficiência da técnica squeeze-flow na estrutura do maracujá corroborando com as micrografias obtidas.

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Pyrolysis of Biomass

Cited by 43 publications

References 0 publications

The nanobiocomposites synthesis from biomass and its characterization

The nanobiocomposites synthesis from biomass and its characterization

The Biomass Waste Pyrolysis for Biopesticide Application

Enriquecimento de Pectina através da técnica squeeze-flow empregando a concha da Lucina Pectinata como fonte de carbonato de cálcio

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