Ao Li, Kai Jin, Jinrui Qin, Zhaowei Huang, Yu Liu, Rui Chen, Tengfei Wang^*, Junmin Chen^*

Journal of Renewable Materials, Vol.11, No.1, pp. 411-422, 2023, DOI:10.32604/jrm.2022.024889

Abstract Hydrothermal carbonization is highly applicable to high moisture biomass upgrading due to fact that moisture involved can be directly used as reaction media under subcritical-water region. With this, value-added utilization of hydrochar as solid fuel with high carbon and energy density is one of the important pathways for biomass conversion. In this review, the dewatering properties of hydrochar after the hydrothermal carbonization of biowaste, coalification degree with elemental composition and evolution, pelletization of hydrochar to enhance the mechanical properties and density, coupled with the combustion properties of hydrochar biofuel were discussed with various biomass and carbonization parameters. Potential applications for… More > Graphic Abstract

Riina Syivarulli^1,2, Nugroho Agung Pambudi^2,*, Mochamad Syamsiro³, Lip Huat Saw⁴

Energy Engineering, Vol.118, No.1, pp. 189-197, 2021, DOI:10.32604/EE.2020.010493

Abstract One of the major problems faced in managing biomass waste to higher quality products is choosing the right technology. Wastes are used as an alternative fuel, with increase in the calorific value. Hydrothermal carbonization (HTC) is a biomass conversion technology, used to obtain solid fuel. This study aims to utilize of Calophyllum inophyllum as an alternative solid fuel through HTC. The calorific value and proximate of the hydrochar will be determined and analyzed to find out its quality. The experiments were carried out at temperature variations of 160°C, 190°C, and 220°C and holding times of 30 and 60 minutes. The… More >

Yongfang Zhang^1,2, Wensheng Hou¹, Hong Guo¹, Sheng Shi¹, Jinming Dai^1,2,*

Journal of Renewable Materials, Vol.7, No.12, pp. 1309-1319, 2019, DOI:10.32604/jrm.2019.07884

Abstract Carbon microspheres were prepared from waste cotton fibers by hydrothermal carbonization (HTC) with the addition of copper sulphate in this work. The important influence factors, temperature, concentration of copper sulphate, resident time were explored here. The smooth and regular carbon microspheres could be formed at 330°C with 0.15 wt% copper sulphate after 6 h from waste cotton fibers. The crystal structures of cotton fibers were destructed in a short resident time with 0.15 wt% copper sulphate from SEM images and XRD patterns of solid products. This strategy provides a new, mild and efficient method to prepare carbon microspheres from waste… More >