3600–3200 (3320) |
Estiramento O-H (água, hidroxila ligada a hidrogênio dos grupos hidroxila de álcoois e fenóis) |
[31[31] DEL POZO, C., REGO, F., YANG, Y., et al., “Converting coffee silverskin to value-added products by a slow pyrolysis-based biorefinery process”, Fuel Processing Technology, v. 214, pp. 106708, 2021. doi: http://dx.doi.org/10.1016/j.fuproc.2020.106708. https://doi.org/http://dx.doi.org/10.101...
,32[32] WANG, Y., LIU, R., “Comparison of characteristics of twenty-one types of biochar and their ability to remove multi-heavy metals and methylene blue in solution”, Fuel Processing Technology, v. 160, pp. 55–63, 2017. doi: http://dx.doi.org/10.1016/j.fuproc.2017.02.019. https://doi.org/http://dx.doi.org/10.101...
,46[46] SANTOS, L.B., STRIEBECK, M.V., CRESPI, M.S., et al., “Characterization of biochar of pine pellet”, Journal of Thermal Analysis, v. 122, n. 1, pp. 21–32, 2015. doi: http://dx.doi.org/10.1007/s10973-015-4740-8. https://doi.org/http://dx.doi.org/10.100...
] |
2950–2920 (2920) |
Estiramento assimétrico C-H de grupos metilenos (-CH2) |
[26[26] BALLESTEROS, L.F., TEIXEIRA, J.A., MUSSATTO, S.I., “Chemical, functionalo, and structural properties of spent coffee grounds and coffee silverskin”, Food and Bioprocess Technology, v. 7, n. 12, pp. 3493–3503, 2014. doi: http://dx.doi.org/10.1007/s11947-014-1349-z. https://doi.org/http://dx.doi.org/10.100...
,32[32] WANG, Y., LIU, R., “Comparison of characteristics of twenty-one types of biochar and their ability to remove multi-heavy metals and methylene blue in solution”, Fuel Processing Technology, v. 160, pp. 55–63, 2017. doi: http://dx.doi.org/10.1016/j.fuproc.2017.02.019. https://doi.org/http://dx.doi.org/10.101...
] |
2870–2840 (2840) |
Estiramento simétrico C-H de metil (-CH3) |
[26[26] BALLESTEROS, L.F., TEIXEIRA, J.A., MUSSATTO, S.I., “Chemical, functionalo, and structural properties of spent coffee grounds and coffee silverskin”, Food and Bioprocess Technology, v. 7, n. 12, pp. 3493–3503, 2014. doi: http://dx.doi.org/10.1007/s11947-014-1349-z. https://doi.org/http://dx.doi.org/10.100...
,32[32] WANG, Y., LIU, R., “Comparison of characteristics of twenty-one types of biochar and their ability to remove multi-heavy metals and methylene blue in solution”, Fuel Processing Technology, v. 160, pp. 55–63, 2017. doi: http://dx.doi.org/10.1016/j.fuproc.2017.02.019. https://doi.org/http://dx.doi.org/10.101...
] |
1700–1500 (1639) |
Estiramento aromático C=C e C=O de grupos carboxílicos e cetonas e quinonas conjugados |
[47[47] WANG, S., GAO, B., ZIMMERMAN, A.R., et al., “Physicochemical and sorptive properties of biochars derived from woody and herbaceous biomass”, Chemosphere, v. 134, pp. 257–262, 2015. doi: http://dx.doi.org/10.1016/j.chemosphere.2015.04.062. PubMed PMID: 25957037. https://doi.org/http://dx.doi.org/10.101...
,48[48] ZHAO, S., TA, N., WANG, X., “Effect of temperature on the structural and physicochemical properties of biochar with apple tree branches as feedstock material”, Energies, v. 10, n. 9, pp. 1293, 2017. doi: http://dx.doi.org/10.3390/en10091293. https://doi.org/http://dx.doi.org/10.339...
] |
1390–1310 (1375, 1315) |
Estiramento -OH fenólico ou estiramento C-O de ânion carboxilato |
[47[47] WANG, S., GAO, B., ZIMMERMAN, A.R., et al., “Physicochemical and sorptive properties of biochars derived from woody and herbaceous biomass”, Chemosphere, v. 134, pp. 257–262, 2015. doi: http://dx.doi.org/10.1016/j.chemosphere.2015.04.062. PubMed PMID: 25957037. https://doi.org/http://dx.doi.org/10.101...
] |
1280–1200 (1240) |
Estiramento de ácido carboxílico C-OH e deformação -OH |
[49[49] JOHNSTON, C.T., “Biochar analysis by Fourier-transform infra-red spectroscopy”, In: Singh, B., Camps-Arbestain, M., Lehmann, J. (eds), Biochar: a guide to analytical methods, 1 ed., capítulo 18, Boca Raton, CRC Press/Taylor and Francis Group, 2017.] |
1160–1020 (1030) |
Estiramento simétrico de ligações C-O em polissacarídeos (celulose, hemiceluloses e lignina) |
[26[26] BALLESTEROS, L.F., TEIXEIRA, J.A., MUSSATTO, S.I., “Chemical, functionalo, and structural properties of spent coffee grounds and coffee silverskin”, Food and Bioprocess Technology, v. 7, n. 12, pp. 3493–3503, 2014. doi: http://dx.doi.org/10.1007/s11947-014-1349-z. https://doi.org/http://dx.doi.org/10.100...
,48[48] ZHAO, S., TA, N., WANG, X., “Effect of temperature on the structural and physicochemical properties of biochar with apple tree branches as feedstock material”, Energies, v. 10, n. 9, pp. 1293, 2017. doi: http://dx.doi.org/10.3390/en10091293. https://doi.org/http://dx.doi.org/10.339...
,49[49] JOHNSTON, C.T., “Biochar analysis by Fourier-transform infra-red spectroscopy”, In: Singh, B., Camps-Arbestain, M., Lehmann, J. (eds), Biochar: a guide to analytical methods, 1 ed., capítulo 18, Boca Raton, CRC Press/Taylor and Francis Group, 2017.] |