Assessing bioenergy prospects of algal biomass and yard waste using an integrated hydrothermal carbonization and pyrolysis (HTC–PY): A detailed emission–to–ash characterization via diverse hyphenated analytical techniques and modelling strategies

Kumar, Akash; Jamro, Imtiaz Ali; Rong, Hongwei; Kumari, Lata; Laghari, Azhar Ali; Cui, Baihui; Aborisade, Moses Akintayo; Oba, Belay Tafa; Nkinahamira, François; Ndagijimana, Pamphile; Sajnani, Shahdev; Bhagat, Waheed Ali; Guo, Dabin

doi:10.1016/j.cej.2024.152335

Chemical Engineering Journal

2024

DOI: 10.1016/j.cej.2024.152335

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Assessing bioenergy prospects of algal biomass and yard waste using an integrated hydrothermal carbonization and pyrolysis (HTC–PY): A detailed emission–to–ash characterization via diverse hyphenated analytical techniques and modelling strategies

Akash Kumar,

Imtiaz Ali Jamro,

Hongwei Rong

et al.

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2024

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Oxidative Degradation Characteristics of Low-Temperature Pyrolysis Biochar and the Synergistic Effect on Released Nutrients

Chen,

Zhuo,

Zhou

et al. 2024

Agronomy

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Biochar application has received much attention because biochar can be used as an organic amendment. The nutrient release patterns and interactions in straw biochar produced at different temperatures are not well understood. In this study, we observed the release patterns of carbon (C), nitrogen (N), phosphorus (P), and potassium (K) and the interaction between released C, N, P, and K from straw biochar prepared from 225 to 600 °C through a 180-day degradation experiment. The results showed that the degradation rate of the two kinds of straw biochar was faster in the first 30 days at different temperatures, and that of the straw biochar prepared before 300 °C was more rapid, indicating that 300 °C is an important turning point. The rule of nutrient release in the straw biochar showed that the K release rate was the highest and most rapid and was more than 60% in the first 30 days. The nutrient release rates for the two kinds of straw biochar were in the order K > N > P > C. The release of nutrients accompanied the decomposition of the straw biochar, and there was an exponential relationship between the amount of nutrients released from straw biochar and its degradation mass. There were collaborative or similar release processes indicated by significant positive correlations between the released C and N (R2 = 0.96) and P and K (R2 = 0.94) in the tobacco straw biochar and an obvious correlation between the released C and N (R2 = 0.76) in the rice straw biochar. These results indicated that the released C and N, P, and K in tobacco straw biochar, as well as C and N in rice straw biochar, have synergistic effects and the same degradation path. The application of straw biochar can provide a source of P and N in the short term and a source of P and C in the long term. This study suggests that returning straw biochar to the soil could appropriately reduce the input of K fertilizer in the early stage.

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Oxidative Degradation Characteristics of Low-Temperature Pyrolysis Biochar and the Synergistic Effect on Released Nutrients

Chen,

Zhuo,

Zhou

et al. 2024

Agronomy

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Assessing bioenergy prospects of algal biomass and yard waste using an integrated hydrothermal carbonization and pyrolysis (HTC–PY): A detailed emission–to–ash characterization via diverse hyphenated analytical techniques and modelling strategies

Cited by 1 publication

References 117 publications

Oxidative Degradation Characteristics of Low-Temperature Pyrolysis Biochar and the Synergistic Effect on Released Nutrients

Oxidative Degradation Characteristics of Low-Temperature Pyrolysis Biochar and the Synergistic Effect on Released Nutrients

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