@article{scholars5605, year = {2015}, doi = {10.1007/s12155-015-9634-x}, volume = {8}, pages = {1800--1809}, title = {Production and Evaluation of Physicochemical Characteristics of Paddy Husk Bio-char for its C Sequestration Applications}, journal = {Bioenergy Research}, number = {4}, publisher = {Springer New York LLC}, note = {cited By 18}, issn = {19391234}, author = {Naqvi, S. R. and Uemura, Y. and Osman, N. and Yusup, S.}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84947029221&doi=10.1007\%2fs12155-015-9634-x&partnerID=40&md5=1242e1ab4bc2919e96b2c65db440e46d}, keywords = {Agricultural wastes; Agriculture; Soils; Thermogravimetric analysis, Bio chars; C sequestration; Carbon stability; Paddy husks; Yield, Quality control}, abstract = {Bio-char is a carbon-rich solid material generated by thermochemical conversion process (pyrolysis) of lignocellulosic biomass, and its viability as a sustainable material has received increasing attention for environmental remediation. The relationship between bio-char properties and its applicability as a soil amendment is still not conclusive. The purpose of this research is to study the bio-char physical and chemical properties from an agricultural residue to examine the quality criteria for carbon sequestration and agricultural uses. Pyrolysis temperature was shown to have a strong impact on production and characteristics of bio-char samples. The bio-char yield decreased with increasing temperatures (350{\^a}??550{\^A} {\^A}oC). According to proximate and ultimate analysis data, temperature has the strongest impact on carbon stability of bio-char (stability increased at higher temperature). The volatile matter decreased while fixed carbon content increased with the increase of pyrolysis temperature. To evaluate further bio-char quality, the relationships between (O/C and H/C molar ratio) and (H/C and volatile matter) of raw paddy husk and produced bio-char at various temperatures is proposed. SEM, FT-IR, and 13C NMR findings are in well agreement with thermogravimetric and proximate analysis of the bio-char that structural and physicochemical properties were significantly influenced by pyrolysis temperature. CO2 adsorption rate increased with increasing temperature. Bio-char produced at 450{\^A} {\^A}oC showed higher absorption capability and could be a potential sustainable substrate for C sequestration and soil amendment. {\^A}{\copyright} 2015, Springer Science+Business Media New York.} }