Co-pyrolysis of lignocellulosic biomass and microalgae: Products characteristics and interaction effect

Chen, Wei; Chen, Yingquan; Yang, Haiping; Xia, Mingwei; Chen, Xu; Chen, Hanping

doi:10.1016/j.biortech.2017.09.022

Cited by 170 publications

(65 citation statements)

References 38 publications

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“…Table shows the results of ultimate, proximate, and HHV analyses for Spirulina and Chlamydomonas . The results show that both species have a significant content of carbon and a lower oxygen content compared with traditional lignocelluloses crops . These results indicate that the production of a higher quality bio‐oil is possible, due to the minor content of oxygenated compounds …”

Section: Resultsmentioning

confidence: 99%

A comparative study of the behavior of Chlamydomonas reinhardtii and Spirulina platensis in solar catalytic pyrolysis

et al. 2020

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Summary The aim of this study was to investigate the behavior of two distinct microalgae species during solar catalytic pyrolysis and the influence of their chemical composition and the process variables (biomass charge, reaction time, and catalyst percentage) on the product yields and bio‐oil composition. For this purpose, solar catalytic pyrolysis of Spirulina platensis and Chlamydomonas reinhardtii was performed using hydrotalcite‐derived mixed oxides as the catalyst. To gain more insight into the effect of composition on pyrolysis behavior, the biomasses were analyzed using various analytical techniques. The results indicated that a high percentage of catalyst (47.1%) culminated in liquid yields of 42.48% and 21.31% for Chlamydomonas pyrolysis and Spirulina pyrolysis, respectively. Additionally, Spirulina pyrolysis resulted in higher solid yields compared with Chlamydomonas pyrolysis. The results also showed that Spirulina bio‐oil was rich in oxygenated compounds, probably due to its high carbohydrate content, whereas Chlamydomonas bio‐oil was rich in nitrogenated compounds because of its higher protein content. The microalgae composition (lipids, protein, carbohydrates) exerted a large influence on the catalytic pathways and led to differences in yield and product distribution. A high percentage of catalysts preferentially promoted a deoxygenation of the bio‐oil obtained from Spirulina solar pyrolysis compared with that obtained from Chlamydomonas pyrolysis.

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Section: Resultsmentioning

confidence: 99%

A comparative study of the behavior of Chlamydomonas reinhardtii and Spirulina platensis in solar catalytic pyrolysis

et al. 2020

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“…A parte inferior do loop é relacionada à adsorção e a parte superior representa a dessorção. Segundo ZHANG et al [63] a forma da isoterma fornecerá informações qualitativas a respeito do processo de adsorção e área superficial dos materiais. Além disso, o perfil isotérmico dará uma visão do tipo e da estrutura dos poros.…”

Section: Análise Das Propriedades Texturais Superficiais Do Hydrocharunclassified

Obtenção de hydrochar a partir de carbonização hidrotérmica de cascas do fruto de Magonia pubescens A. St. Hil. Sapindaceae: Caracterização e avaliação em processo de adsorção

et al. 2019

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RESUMO A Carbonização hidrotermal (HTC) de cascas do fruto de Magonia pubescens A. St. Hil. Sapindaceae (Tingui do cerrado) é apresentada como uma proposta inédita na produção de hydrochars a partir de precursores de espécies do Cerrado Brasileiro, onde se verificou a influência da temperatura nas propriedades dos materiais obtidos. Os hyrochar obtidos foram caracterizados em termos de rendimento em peso, análise elementar e estimativa do poder calorífico superior (PCS), análise de espectroscopia na região do infravermelho (FT-IR), difratometria de raios-x (DRX) e avaliação da capacidade de adsorção. O aumento da temperatura afetou negativamente o rendimento do hydrochar, o qual variou entre 46,25 % e 27,42%, nas temperaturas de 170 e 190 °C, respectivamente. Hydrochars com maior teor de carbono (64,10%) foram obtidos em baixa temperatura (170 °C), o qual também apresentou maior poder calorífico superior (23,94 MJ kg-1) e área superficial específica (44,0 m2.g-1). A evolução das razões atômicas H/C e O/C indicou processos de desidratação e descarboxilação durante a carbonização hidrotérmica. As isotermas de adsorção-dessorção de N2 a -176 ºC, resultantes da análise das propriedades texturais e estruturais, demonstraram a presença de mesoporos na estrutura dos hydrochars. Na avaliação da capacidade de adsorção com azul de metileno, a isoterma de Langmuir foi a que melhor explicou o comportamento de adsorção, tendo os hydrochars obtidos a 170 e 180 °C as maiores capacidades de adsorção (139,38 e 202,40 mg g-1, respectivamente). Os resultados indicaram a carbonização hidrotermal de cascas do fruto de tingui como uma nova estratégia para o desenvolvimento de hydrochars com alto rendimento, teor de carbono elevado e alta eficiência de adsorção, valores superiores a diversos trabalhos encontrados na literatura.

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“…Thermochemical conversion technology shows its potential for the utilization of biomass energy, which can be divided into three main types: gasification, liquefaction, and pyrolysis . Nowadays, there are many researchers focusing on pyrolyzing lignocellulosic plants and seaweed biomass to produce high‐quality bio‐fuels, bio‐char, and other chemicals . Further, co‐pyrolysis and catalytic pyrolysis technology are employed to enhance the product quality.…”

Section: Introductionmentioning

confidence: 99%

Co‐pyrolysis characteristics of polysaccharides‐cellulose and the co‐pyrolyzed compound distributions over two kinds of zeolite catalysts

et al. 2020

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Summary Co‐pyrolysis characteristics of soluble polysaccharides‐cellulose were investigated through thermogravimetric analysis (TGA), kinetic analysis, analytical pyrolyser coupled with gas chromatograph‐mass spectrometer (Py‐GC/MS) and subsequent density functional theory (DFT). Results from TGA and differential thermogravimetric analysis (DTG) analyses indicated that there were synergistic effects in the polysaccharides‐cellulose (PS‐CE) blends pyrolysis process. Surprisingly in co‐pyrolysis process from Py‐GC/MS analysis, the furans were suppressed, while the anhydrosugars were increased. The DFT calculation showed that free radicals pyrolyzed from soluble polysaccharides could suppress the ring‐opening reaction of D‐glucopyranose. The co‐pyrolyzed chemical compound distribution over the catalysts (MCM‐41, ZSM‐5 and their mixtures) was also detected through Py‐GC/MS analysis. Both the zeolites showed high selectivity for 5‐methyl‐2‐furaldehyde and 2‐furaldehyde. The two kinds of zeolites could induce the generation of furans but suppress the production of anhydrosugars, which was the opposite effect of the co‐pyrolysis of PS‐CE.

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Co-pyrolysis of lignocellulosic biomass and microalgae: Products characteristics and interaction effect

Cited by 170 publications

References 38 publications

A comparative study of the behavior of Chlamydomonas reinhardtii and Spirulina platensis in solar catalytic pyrolysis

A comparative study of the behavior of Chlamydomonas reinhardtii and Spirulina platensis in solar catalytic pyrolysis

Obtenção de hydrochar a partir de carbonização hidrotérmica de cascas do fruto de Magonia pubescens A. St. Hil. Sapindaceae: Caracterização e avaliação em processo de adsorção

Co‐pyrolysis characteristics of polysaccharides‐cellulose and the co‐pyrolyzed compound distributions over two kinds of zeolite catalysts

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