Morphological attributes of modified clays coagulated with red tide algae

Cao Xihua; Song Xiuxian; Yu Zhiming

doi:10.3969/j.issn.0253-4193.2017.06.004

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Cao Xihua, Song Xiuxian, Yu Zhiming. Morphological attributes of modified clays coagulated with red tide algae[J]. Haiyang Xuebao, 2017, 39(6): 33-42. doi: 10.3969/j.issn.0253-4193.2017.06.004

Citation:

Cao Xihua, Song Xiuxian, Yu Zhiming. Morphological attributes of modified clays coagulated with red tide algae[J]. Haiyang Xuebao, 2017, 39(6): 33-42. doi: 10.3969/j.issn.0253-4193.2017.06.004

Cao Xihua, Song Xiuxian, Yu Zhiming. Morphological attributes of modified clays coagulated with red tide algae[J]. Haiyang Xuebao, 2017, 39(6): 33-42. doi: 10.3969/j.issn.0253-4193.2017.06.004

Citation:

Cao Xihua, Song Xiuxian, Yu Zhiming. Morphological attributes of modified clays coagulated with red tide algae[J]. Haiyang Xuebao, 2017, 39(6): 33-42. doi: 10.3969/j.issn.0253-4193.2017.06.004

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Morphological attributes of modified clays coagulated with red tide algae

doi: 10.3969/j.issn.0253-4193.2017.06.004

Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China

Received Date: 2016-12-14
Rev Recd Date: 2017-02-01

Abstract

Abstract

The morphological attributes of aggregate particles formed by modified clays (MCs) with algae can theoretically guide the dosage and usage of the MCs in the red tide treatment. In this study, we discussed the feasibility of particle morphological measurement on evaluating the algal removal efficiency of MCs. We measured surface electricity, sizes and structures of the aggregate particles using laser technique and electron microscopy. Results showed that current methods reliably detect the reversion of clay particles surface electricity after being modified, the variation of particles grade when various clays were dispersed in different solvents, and the fine microscopic structures of aggregates formed between MCs and algae. However, the bigger particles which did not carry a corresponding ratio of cells to sediment had a great impact in system on the present morphological measurements. There were no significant correlations between the particle sizes and the algal removal efficiencies. Our observations suggest that the current methods were not sensitive enough to reveal the morphological variation of MCs particles and the present resolved characteristics could not denote the algal removal efficiency. Thus it's in urgent need of new methods to analyze the characteristics of aggregates formed by MCs and algal cells.
- red tide mitigation,
- modified clay,
- coagulation morphology,
- aggregate particles,
- monitoring method

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References(27)

References

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