Stabilisation of microalgae: iodine mobilisation under aerobic and anaerobic conditions

Han, Wei, Clarke, William and Pratt, Steven (2015) Stabilisation of microalgae: iodine mobilisation under aerobic and anaerobic conditions. Bioresource Technology, 193 219-226. doi:10.1016/j.biortech.2015.06.063

Author Han, Wei
Clarke, William
Pratt, Steven
Title Stabilisation of microalgae: iodine mobilisation under aerobic and anaerobic conditions
Journal name Bioresource Technology   Check publisher's open access policy
ISSN 1873-2976
Publication date 2015-10
Sub-type Article (original research)
DOI 10.1016/j.biortech.2015.06.063
Open Access Status Not yet assessed
Volume 193
Start page 219
End page 226
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2016
Language eng
Formatted abstract
Mobilisation of iodine during microalgae stabilisation was investigated, with the view of assessing the potential of stabilised microalgae as an iodine-rich fertiliser. An iodine-rich waste microalgae (0.35 ± 0.05 mg I g−1 VSadded) was stabilised under aerobic and anaerobic conditions. Iodine mobilisation was linearly correlated with carbon emission, indicating iodine was in the form of organoiodine. Comparison between iodine and nitrogen mobilisation relative to carbon emission indicated that these elements were, at least in part, housed separately within the cells. After stabilisation, there were 0.22 ± 0.05 and 0.19 ± 0.01 mg g−1 VSadded iodine remaining in the solid in the aerobic and anaerobic processed material respectively, meaning 38 ± 5.0% (aerobic) and 50 ± 8.6% (anaerobic) of the iodine were mobilised, and consequently lost from the material. The iodine content of the stabilised material is comparable to the iodine content of some seaweed fertilisers, and potentially satisfies an efficient I-fertilisation dose.
Keyword Aerobic digestion
Algal fertiliser
Anaerobic digestion
Iodine biofortification
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
School of Chemical Engineering Publications
Official 2016 Collection
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