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Title: Enhanced carbon capture biosorption through process manipulation
Authors: Lim, Choon-Ping
Zhang, Sheng
Zhou, Yan
Ng, Wun Jern
Keywords: DRNTU::Science::Biological sciences::Biochemistry
Issue Date: 2014
Source: Lim, C.-P., Zhang, S., Zhou, Y., & Ng, W. J. (2015). Enhanced carbon capture biosorption through process manipulation. Biochemical engineering journal, 93, 128-136.
Series/Report no.: Biochemical engineering journal
Abstract: The feasibility of manipulating operating parameters, i.e. Food-to-microorganisms (F/M) ratio, SRT, and residual DO, to enhance biosorption performance was investigated. It was observed that lower F/M and longer SRT resulted in sludges which captured carbon mainly through carbon storage. Surface sorption, however, was the dominant mechanism for sludges grown under the higher DO condition. Generally, biosorption was optimal at pH 7. Sorption kinetic studies revealed that sludge cultivated under the low F/M ratio of 0.15 (Sludge S1) showed the best overall biosorption performance. Determination of calorific value revealed that Sludge S1 was able to capture energy as much as 0.9 kJ/g SS within 15 min contact time. About 66.3% of the overall biosorption capacity was attributed to carbon storage. Sludge S1 was able to accumulate organic substrate and stored this as polyhydroxyalkanoates (PHA). Culture-independent microbial community analysis through DGGE revealed the presence of strains capable of PHA-accumulation, e.g. Rhodobacter sp., and Thauera sp. While different dominating mechanisms resulted from different cultivation conditions, the best biosorption performance was significantly contributed by carbon storage activity.
ISSN: 1369-703X
DOI: 10.1016/j.bej.2014.10.003
Rights: © 2014 Elsevier B.V. This is the author created version of a work that has been peer reviewed and accepted for publication by Biochemical Engineering Journal, Elsevier B.V. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
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