| Title | Synthesis and characterization of rice husk biochar via hydrothermal carbonization for wastewater treatment and biofuel production |
|---|---|
| ID_Doc | 9593 |
| Authors | Hossain, N; Nizamuddin, S; Griffin, G; Selvakannan, P; Mubarak, NM; Mahlia, TMI |
| Title | Synthesis and characterization of rice husk biochar via hydrothermal carbonization for wastewater treatment and biofuel production |
| Year | 2020 |
| Published | Scientific Reports, 10.0, 1 |
| Abstract | The recent implication of circular economy in Australia spurred the demand for waste material utilization for value-added product generations on a commercial scale. Therefore, this experimental study emphasized on agricultural waste biomass, rice husk (RH) as potential feedstock to produce valuable products. Rice husk biochar (RB) was obtained at temperature: 180 degrees C, pressure: 70 bar, reaction time: 20 min with water via hydrothermal carbonization (HTC), and the obtained biochar yield was 57.9%. Enhancement of zeta potential value from -30.1 to -10.6 mV in RB presented the higher suspension stability, and improvement of surface area and porosity in RB demonstrated the wastewater adsorption capacity. Along with that, an increase of crystallinity in RB, 60.5%, also indicates the enhancement of the catalytic performance of the material significantly more favorable to improve the adsorption efficiency of transitional compounds. In contrast, an increase of the atomic O/C ratio in RB, 0.51 delineated high breakdown of the cellulosic component, which is favorable for biofuel purpose. 13.98% SiO2 reduction in RB confirmed ash content minimization and better quality of fuel properties. Therefore, the rice husk biochar through HTC can be considered a suitable material for further application to treat wastewater and generate bioenergy. |
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