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Research of specific heat capacities of three large seaweed biomass

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Abstract

Based on the differential scanning calorimeter (DSC) in traditional solution method, the modification considering the mass loss was put into the measurement of specific heat capacities, which made the measured values more accurately. Adopting this method, the specific heat capacities of three sorts of seaweeds (a kind of marine biomass) during 40–550 °C were measured by the NETZSCH DSC404 DSC. The results showed that the initial temperature of pyrolysis mass loss of seaweed is lower than that of lignocellulosic biomass. The heating process of seaweed could be divided into three intervals: dehydration, devolatilization, and semi-coke state. The differences of the specific heat capacities at three intervals were quite obvious, because the property of residues changed greatly. Generally, the specific heat capacities of three sorts of seaweed obeyed such sequence: Gracilaria cacalia > Enteromorpha clathrata > Sargassum natans. The mathematic relations for specific heat capacities at temperatures ranging 40–550 °C were presented. The results would provide a reference for the thermal chemical conversion energy utilization of seaweed biomass and corresponding numerical simulation.

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Acknowledgments

This study was supported by the Natural Science Fundamental Research Project of Jiangsu Colleges and Universities in China (12KJB480004), the Science and Technology Start-up Foundation for Advance Talents of Jiangsu University in China (12JDG035) and the Financial Fund of the Ministry of Agriculture (No. NFZX2013).

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Authors and Affiliations

  1. School of Energy and Power Engineering, Jiangsu University, Jiangsu, 212013, China

    S. Wang, Q. Wang, H. S. Ji, L. F. Wu & J. F. Wang

  2. Institute of Thermal Engineering, Shanghai Jiao Tong University, Minhang District, Shanghai, 200240, China

    X. M. Jiang

  3. Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China

    S. N. Xu

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  1. S. Wang
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  2. X. M. Jiang
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  3. Q. Wang
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  4. H. S. Ji
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  5. L. F. Wu
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  6. J. F. Wang
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  7. S. N. Xu
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Correspondence to S. N. Xu.

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Wang, S., Jiang, X.M., Wang, Q. et al. Research of specific heat capacities of three large seaweed biomass. J Therm Anal Calorim 115, 2071–2077 (2014). https://doi.org/10.1007/s10973-013-3141-0

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  • DOI: https://doi.org/10.1007/s10973-013-3141-0

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