Characterization of Rice Husk Biochar and Its Particle Size Effects on Soil Properties in Sandy Loam Soil
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Issued Date
2023-01-01
Resource Type
ISSN
19059094
Scopus ID
2-s2.0-85150819709
Journal Title
GMSARN International Journal
Volume
17
Issue
4
Start Page
389
End Page
395
Rights Holder(s)
SCOPUS
Bibliographic Citation
GMSARN International Journal Vol.17 No.4 (2023) , 389-395
Suggested Citation
Wangdi K. Characterization of Rice Husk Biochar and Its Particle Size Effects on Soil Properties in Sandy Loam Soil. GMSARN International Journal Vol.17 No.4 (2023) , 389-395. 395. Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/81836
Title
Characterization of Rice Husk Biochar and Its Particle Size Effects on Soil Properties in Sandy Loam Soil
Author(s)
Other Contributor(s)
Abstract
This study aimed (i) to characterize biochar derived from rice husk using a traditional kiln method, and (ii) to evaluate leaching reduction potential by differentiating sizes of rice husk biochar (RHB). For this study, RHB was produced at 300 to 550° C using the traditional kiln method and was conducted at Naresuan University, Thailand. Morphology of RHB was classified using Field Emission Scanning Electron Microscope together with Energy Dispersive X-ray Spectrometer (FESEM-EDS). Three different sizes of RHB: (i) less than 0.25 mm, (ii) 0.25 – 1 mm, and (iii) 1 – 2 mm were used at the rate of 2% w/w to mix with the sandy loam soil and tested in soil column. The results showed that the traditional kiln method could produce RHB of about 40% of the total fresh weight. The average pore size was 10.64 μm. Carbon was a highest element content in RHB (> 60%), then oxygen (~20%) and silica (~15%), respectively. Observed pore sizes were similar for all three RHB samples. After soil incubation, a smallest biochar size (<0.25 mm) was 17% greater potential in leaching reduction as compared to control. Besides, medium (0.25 – 1 mm) and large (1 – 2 mm) sizes of RHB reduced leaching by 13%, and 10%, respectively. Application of RHB decreased bulk density and increased soil nitrogen adsorption capacity.