Life-cycle assessment of tobacco stalk utilization

Qin, Zuodong; Sun, Mingxing; Xiao, Luo; Zhang, Hongrui; Xie, Jiyong; Chen, Haifeng; Yang, Lirong; Shi, Lei

doi:10.1016/j.biortech.2018.05.110

Cited by 21 publications

(13 citation statements)

References 28 publications

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“…74 It generates approximately 8 million tonnes of tobacco stalk waste, which is currently either burned on the fields or used for indoor combustion. 75 In addition to stalk waste, portion of the leaves processed become waste as the stems are not used in cigarettes due to their higher cellulose content of 20%. Tobacco stalk contains 45% cellulose, 30% hemicellulose and 25% lignin.…”

Section: Tobaccomentioning

confidence: 99%

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Micro- and nanocelluloses from non-wood waste sources; processes and use in industrial applications

2021

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Section: Tobaccomentioning

confidence: 99%

“…16 China, Brazil, and India are the biggest producers of tobacco of which China leads the production with portion of 40% of the global production. 75 Methods of nanocellulose isolation from tobacco and description of products found in literature are compiled in Table 1.…”

Section: Tobaccomentioning

confidence: 99%

Micro- and nanocelluloses from non-wood waste sources; processes and use in industrial applications

2021

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“…A geração anual mundial do caule do tabaco é estimada em 3,2 milhões de toneladas, o que representa 40% da produção total mundial [25]. QIN et al [26] afirmam que o final do ciclo de vida desse resíduo agrícola é geralmente inadequado, que acaba sendo abandonado nas plantações ou queimado a céu aberto. Além disso, a presença de nicotina nos caules provoca um aumento na eliminação de resíduos sólidos e problemas de poluição ambiental [27].…”

Section: Introductionunclassified

Formulação e caracterização de potenciais filamentos compósitos de PLA e talos de tabaco para aplicação em manufatura aditiva

et al. 2021

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RESUMO A tecnologia de fabricação por filamento fundido (FFF) utilizando polímeros como PLA e ABS é bem conhecida. Contudo, o desenvolvimento de filamentos compósitos para esta tecnologia de manufatura aditiva, bem como a determinação dos parâmetros de processamento e das propriedades resultantes na extrusão e naimpressão 3D, ainda requerem pesquisa. Esse estudo exploratório analisa as propriedades químicas, térmicas e a morfologia de filamento de matriz polimérica de PLA e talos de tabaco, visando sua utilização no processo FFF. Os materiais utilizados foram talos de tabaco moídos e PLA. As partículas de tabaco, com tamanho médio de 50 ?m, apresentaram-se aleatoriamente distribuídas no filamento. No entanto, aglomerados de partículas, bolhas e porosidades foram observados no centro do filamento. Ensaios por espectroscopia no infravermelho por transformada de Fourier mostraram que o filamento compósito apresentou interação mecânica entre os materiais. A análise térmica permitiu verificar que não houve degradação do pó de talos de tabaco, mantendo a integridade química e física do filamento compósito a temperatura de extrusão de 180 °C. A calorimetria exploratória diferencial revelou que as partículas de pó de talos de tabaco podem ter atuado como agente nucleante, aumentando o grau de cristalinidade do filamento compósito. Sugere-se para estudos futuros o aumento do percentual de pó de talos de tabaco, a investigação de outros métodos de preparação de compósitos, bem como um estudo da adição de plastificantes ou agentes compatibilizantes para aprimorar a ligação entre a interface do PLA e as partículas de tabaco.

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“…According to FAO (Food and Agriculture Organization of the United Nations) [15], in 2018, the worldwide production of tobacco reached over 6 million tonnes, of which 25% is considered as harvest and production waste [16,17]. Tobacco waste disposed in landfills may result in ground and water pollution, caused by several chemicals applied to the plant during its growth [18,19]. Therefore, the possibilities of its use as a substrate for thermal processes are being investigated.…”

Section: Introductionmentioning

confidence: 99%

Pelletization of Post-Harvest Tobacco Waste and Investigation of Flue Gas Emissions from Pellet Combustion

2020

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The paper presents the results of the pelletization (agglomeration) tests of post-harvest tobacco waste as a feedstock for fuel pellet production. The experiment was conducted on a prototype pelleting–briquetting device with a flat matrix. The influence of the tobacco waste moisture content (17, 21 and 25wt.%) and the rotational speed of the agglomerating rolls (120, 170 and 220 rpm) on the power demand and on the pellet’s kinetic durability and density were determined. It was found that the moisture content has a significant impact on the pellet’s density but slightly affects its kinetic durability. The obtained pellets were characterized by a high density above 1000 kg·m−3 and kinetic durability above 97%. In order to examine the exhaust composition, the obtained pellets were combusted in a 25 kW fixed great boiler. High amounts of CO, SOx, NO and HCl were obtained, which suggests that the selection of a different technology for tobacco waste pellet combustion should be made.

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Life-cycle assessment of tobacco stalk utilization

Cited by 21 publications

References 28 publications

Micro- and nanocelluloses from non-wood waste sources; processes and use in industrial applications

Micro- and nanocelluloses from non-wood waste sources; processes and use in industrial applications

Formulação e caracterização de potenciais filamentos compósitos de PLA e talos de tabaco para aplicação em manufatura aditiva

Pelletization of Post-Harvest Tobacco Waste and Investigation of Flue Gas Emissions from Pellet Combustion

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