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language
eng
Attribute
Original Research
Author
Ifeoma Monica Nwajiaku
John Seye Olanrewaju
Takeo Tokunari
Shigeru Kitano
Description
Purpose
Waste management is one of the significant challenges facing Nigeria’s agricultural sector. To manage this problem, the conversion of agricultural wastes to biochar is a practical solution.

Methods
In this work, the chemical composition of biochar from rice husk and sugarcane bagasse, two predominant agricultural wastes, commonly generated in Nigeria was studied. These wastes were pyrolyzed at 300–700 and 350–700 °C for rice husk biochar (RHB) and sugarcane bagasse biochar (SBB), respectively.

Results
It was found that biochar yield and total nitrogen decreased with increasing pyrolysis temperature while ash content, pH, EC, total carbon, extractable Ca, Mg, Na, available phosphorus and silica were increased. In RHB, extractable K increased with increasing pyrolysis temperature, while in SBB it decreased with its maximum observed in RHB.

Conclusions
Rice husk pyrolyzed at high temperature may produce nutrient-rich biochar with high nutrient contents and these could ameliorate acidic soils. Finally, SBB could give high available silicon with acid pre-treatment.
Journal Title
International Journal of Recycling of Organic Waste in Agriculture
Volume
7
Start Page
269
End Page
276
Published Date
2018-8-17
DOI
Publisher
Springer
NII Type
Journal Article
Format
PDF
Text Version
出版社版
Gyoseki ID
e35542
OAI-PMH Set
Faculty of Life and Environmental Science