Abstract
The municipal biowaste anaerobic digestate of a typical waste treatment plant is pyrolyzed under a mild condition (i.e., 540 °C) to directly yield N-doped biochar without performing any subsequent functionalization process. The results confirmed the integration of nitrogen heteroatoms within the carbonaceous framework. The morphological characterization, instead, evidenced the formation of a rather dense biochar with a very low surface area.
Highlights
The continuous need for alternative materials to replace fossil sources is rapidly emerging as a promising research field that will catalyze the technological development in the future [1,2,3].Interestingly, in the last few decades, the use of carbon has remarkably grown and attracted attention worldwide thanks to the technological push that started with the discovery of its new allotropes as well as the positive integration of carbonaceous materials into breakthrough and challenging technological fields [4].the production of carbon from natural sources following a simple thermal conversion of biomass from dedicated crops is a technological solution that no longer convinces scientists
The municipal biowaste anaerobic digestate of a typical waste treatment plant is pyrolyzed under a mild condition (i.e., 540 ◦ C) to directly yield N-doped biochar without performing any subsequent functionalization process
In the last few decades, the use of carbon has remarkably grown and attracted attention worldwide thanks to the technological push that started with the discovery of its new allotropes as well as the positive integration of carbonaceous materials into breakthrough and challenging technological fields [4]
Summary
The production of carbon from natural sources following a simple thermal conversion of biomass from dedicated crops is a technological solution that no longer convinces scientists. It conflicts with food needs, raising concern about the exploitation of cultivation land for non-food purposes. This does not apply to the valorization of municipal biowaste (MBW) as a C feedstock. Research in this direction is welcome to solve the environmental problems connected with the increasing amount of urban wastes [5,6]
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