Effect of different pyrolysis temperatures on biofertilizer properties of microalgal biochar and energy analysis
Erratum Note
The authors of the above article report the following corrections:
Correction 1 – Addition of culture collection strain accession numbers: Following a review by the Culture Collection of Algae at the University of Göttingen (SAG), it was determined that the accession numbers of the microalgae strains employed in the study were not fully reported in the original publication. The strains are hereby identified as Chlorella sp. SAG 241.80 (Cs), Chlorella vulgaris SAG 211-11b (Cv), Neochloris conjuncta SAG 78.80 (Nc), and Botryococcus braunii SAG 807-1 (Bb), obtained from SAG (https://sagdb.uni-goettingen.de). This information has been incorporated into the Abstract, Introduction, and Materials and Methods sections of the corrected manuscript.
Correction 2 – Removal of Figure 2 and renumbering of subsequent figures: Figure 2 of the original article has been removed. The numbering of all subsequent figures has been revised accordingly in the corrected manuscript.
These corrections do not affect the scientific conclusions, results, or interpretation of the original article.
Abstract
In this study, Chlorella sp. SAG 241.80 (Cs), Chlorella vulgaris SAG 211-11b (Cv), Neochloris conjuncta SAG 78.80 (Nc), Botryoococcus braunii SAG 807-1 (Bb), and Scenedesmus obliquus (So) microalgae strains were cultivated in channel type ponds. The microalgal biomasses obtained were divided into two groups (350 and 600 °C). The microalgal biomasses in the first group were biocharized at two different pyrolysis temperatures, while those in the second group were untreated crude microalgal biomasses. As a result of the energy input-output analysis of both groups of microalgal biomasses, the highest net energy gain was calculated in the un-treated Cv strain with 52.41, while the lowest value was calculated in the biocharification process of So and Bb strains at 600°C with 13.03. In all groups, the energy efficiency, energy ratio, and net energy gain of the Cv strain were found to be higher than other microalgae strains. When the bio-fertilizer, biostimulant data, and energy data are evaluated together, it’s concluded that it’s most appropriate to prefer the Cv microalgae strain.
Keywords
Microalgal biomass, Microalgal biochar, Pyrolysis, Biofertilizer, Biostimulant, Energy efficiency
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