TY - JOUR
T1 - Hydrothermal carbonization of Typha australis
T2 - Influence of stirring rate
AU - Abdeldayem, Omar M.
AU - Al Noman, Md Abdullah
AU - Dupont, Capucine
AU - Ferras, David
AU - Grand Ndiaye, Lat
AU - Kennedy, Maria
PY - 2023
Y1 - 2023
N2 - According to existing literature, there are no conclusive results on the impact of stirring on hydrothermal carbonization (HTC); some studies report a significant impact on the product's properties, while others indicate no influence. This study investigates the influence of stirring rate on several responses and properties of HTC products, including solid mass yield, solid carbon fraction, surface area, surface functional groups, morphology, and the fate of inorganic elements during HTC. Waste biomass was introduced as a feedstock to a 2 L HTC reactor, where the effects of temperature (180–250 °C), residence time (4–12 h), biomass to water (B/W) ratio (1–10%), and stirring rate (0–130 rpm) were investigated. The findings of this study conclusively indicated that the stirring rate does not influence any of the studied responses or properties of hydrochar under the selected experimental conditions used in this study. Nevertheless, the results indicated that a low-stirring rate (5 RPM) is enough to slightly enhanced the heating-up phase of the HTC reactor. For future research, it is recommended to examine the impact of stirring rate on the HTC of other types of biomass using the methodology developed in this study.
AB - According to existing literature, there are no conclusive results on the impact of stirring on hydrothermal carbonization (HTC); some studies report a significant impact on the product's properties, while others indicate no influence. This study investigates the influence of stirring rate on several responses and properties of HTC products, including solid mass yield, solid carbon fraction, surface area, surface functional groups, morphology, and the fate of inorganic elements during HTC. Waste biomass was introduced as a feedstock to a 2 L HTC reactor, where the effects of temperature (180–250 °C), residence time (4–12 h), biomass to water (B/W) ratio (1–10%), and stirring rate (0–130 rpm) were investigated. The findings of this study conclusively indicated that the stirring rate does not influence any of the studied responses or properties of hydrochar under the selected experimental conditions used in this study. Nevertheless, the results indicated that a low-stirring rate (5 RPM) is enough to slightly enhanced the heating-up phase of the HTC reactor. For future research, it is recommended to examine the impact of stirring rate on the HTC of other types of biomass using the methodology developed in this study.
KW - Hydrochar
KW - Hydrothermal carbonization
KW - Lignocellulosic biomass
KW - Response stirring rate
KW - Surface methodology
KW - Typha australis
UR - http://www.scopus.com/inward/record.url?scp=85168444058&partnerID=8YFLogxK
U2 - 10.1016/j.envres.2023.116777
DO - 10.1016/j.envres.2023.116777
M3 - Article
C2 - 37517487
AN - SCOPUS:85168444058
SN - 0013-9351
VL - 236
JO - Environmental Research
JF - Environmental Research
IS - 2
M1 - 116777
ER -