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Engineered Biochar: Sink and Sequestration of Carbon

Abstract

The concentration of carbon dioxide in the atmosphere have been increasing mainly due to large scale emissions from anthropogenic activities, causing global warming and climate change. The carbon emissions can be reduced by capturing and storing it for long term in soil, oceans, vegetation (afforestation), and geological formations, which is broadly termed as carbon sequestration. The conversion of waste biomass into biochar (contains recalcitrant carbon) through pyrolysis and its application for soil carbon sequestration is documented in the prior art. Biochar utilization as a sorbent for carbon dioxide capture from sources of emissions is also widely researched method. However, the pristine biochar sorbent effectiveness is limited due to poor textural and surface characteristics. Therefore, recent research studies investigated the development of engineered biochar sorbents with better textural and surface characteristics such as high surface area, pore volume, and enrichment of nitrogen related and hydroxyl functional groups. The present chapter outlines the performance of engineered biochar sorbents produced through various physical and chemical modification methods and raw material for carbon dioxide capture. Limitations and future prospects of engineered biochar production and application for carbon sequestration has also been provided to facilitate the research advancement.

Keywords

  • Engineered biochar
  • Carbon capture
  • Adsorption capacity
  • Soil carbon sequestration

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Correspondence to Manish Kumar .

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© 2022 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

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Rawat, N., Nautiyal, P., Kumar, M., Vimal, V., Karim, A.A. (2022). Engineered Biochar: Sink and Sequestration of Carbon. In: Ramola, S., Mohan, D., Masek, O., Méndez, A., Tsubota, T. (eds) Engineered Biochar. Springer, Singapore. https://doi.org/10.1007/978-981-19-2488-0_12

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