journal article·2023-12

Improving Nitrogen Retention in Algal Biochar Pyrolysis by Co‐Pyrolysis with Glucose

Willem Vercruysse, Michaela Pappa, Gianfabio Mangione, Derese Desta, An Hardy, Hans‐Gerd Boyen, Marlies K. Van Bael, Wouter Marchal, Dries Vandamme

Advanced Sustainable Systems· Volume 7· Issue 12
Publisher page

Abstract

Abstract Algal biomass is a promising pyrolysis feedstock, however, large amounts of nitrogen‐containing compounds (NH 3 , HCN,…) are emitted during its conversion. These emissions can be decreased by incorporating nitrogen in the biochar's carbon matrix via co‐pyrolysis. This study investigates whether adding glucose (GL) to the microalgae, Arthrospira sp . (SP), increases the nitrogen fixation in the solid biochar. Moreover, scalable (co‐) pyrolysis experiments are linked with micro‐scale pyrolysis. Using hyphenated pyrolysis (Py–GC–MS, TG‐IR) and characterization (CHNS, XPS, and Raman) techniques the phenomena associated with the incorporation of nitrogen in the biochars are unraveled. Co‐pyrolyzing SP and GL increased biochar yields and nitrogen retention, which is attributed to Maillard reactions occurring in the initial pyrolysis stages. In conclusion, this study provides evidence that co‐pyrolysis of microalgae and reducing sugars is a more sustainable strategy to produce algae‐based biochar.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Algal biology and biofuel production · Biodiesel Production and Applications · Thermochemical Biomass Conversion Processes

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Analytical and Circular Chemistry Institute for Materials Research (imo‐imomec) Hasselt University Agoralaan Gebouw D Diepenbeek 3590 Belgium

Design and Synthesis of Inorganic Nanomaterials Institute for Materials Research (imo‐imomec) Hasselt University Agoralaan Gebouw D Diepenbeek 3590 Belgium

IMEC VZW Division Imomec Associated Laboratory Wetenschapspark 1 Diepenbeek 3590 Belgium

EnergyVille Thor Park 8320 Genk 3600 Belgium

Nano Structure Physics Materials physics Institute for Materials Research (imo‐imomec) Hasselt University Agoralaan Gebouw D Diepenbeek 3590 Belgium

Funding

Fonds Wetenschappelijk Onderzoek

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