Widespread tropical agrowastes as novel feedstocks for biochar production: characterization and priority environmental uses

CARLA E. GIACOMELLI

Biomass Conversion and Biorefinery

Springer

Año: 2021 vol. 11 p. 1775 - 1775

2190-6815

iochar, a carbon-rich pyrolytic product, has demonstrated positive results as a soil improver and carbon sequestrationagent. Its production could be an appropriate and innovative practice for agricultural waste management in the context ofenvironmentally smart agriculture. However, considering the relevant effect of the production conditions on the finalbiochar properties, its characterization is a necessary step, moreover, if an unknown feedstock is being used. Coffee hulls(CH), pineapple stubble (PS), and palm oil fiber (PF) are typical tropical agro-industrial wastes, and biochar from thefirst two are not reported before. In this work, biochars from them were obtained after 1 h of pyrolysis at 600 °C.Surface area and pH of biochars were close to 60 m2g−1 and 9, respectively (except for PF which was 29 m2g−1), whiletorrefied biomass (charred material prepared at 300 °C) presented a surface area close to 1 m2g−1 and neutral pH. FixedC was approximately 80% (PF and C