Inactivation of cyclotella meneghiniana to prepare biochar by in-liquid pulsed discharge plasma
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Date
2025
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Ltd
Abstract
The large-scale outbreaks of harmful algal blooms continue to impact river and lake ecosystems. Converting harmful algal blooms into algal biochar presents a novel approach. This work investigates the inactivation of Cyclotella meneghiniana (the dominant species in diatom blooms) to prepare biochar by in-liquid pulsed discharge plasma (LPDP). Under the conditions of a peak voltage of 30 kV and an electrode spacing of 7 mm, a 100 % inactivation ratio can be achieved within 20 min plasma treatment. The multiple physical and chemical effects generated by in-liquid pulsed discharge cause the cell structure destruction, chlorophyll-a content reduction, enzyme activity decrease, and malondialdehyde oxidative degradation leading to algal inactivation and biochar production. The obtained algal biochar has the advantages of a rich carbon content and a stable structure. This work provides a new technological option for resource utilization of algal blooms.
Description
Keywords
Algal biochar, In-liquid pulsed discharge plasma, Inactivation mechanism, Cyclotella meneghiniana, in-liquid pulsed discharge plasma
Citation
Li, Y., Xin, Y., Sun, B., Man, C., Mouele, E., Petrik, L., Bladergroen, B.J. and Zhang, C., 2025. Inactivation of Cyclotella meneghiniana to prepare biochar by in-liquid pulsed discharge plasma. Biomass and Bioenergy, 200, p.108034.