| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6356707 | Marine Pollution Bulletin | 2015 | 9 Pages |
â¢Marine algae on dephosphorization slag mixed with dredged sediment was examined.â¢The algal species composition and biomass were influenced by the sediment.â¢Shear strength and pH of the sediment were higher than those of natural tidal flats.â¢Dephosphorization slag contributes to changing algal composition and sediment environment.
The use of granular steelmaking slag as a substitute for natural sand in the construction of tidal flats was investigated. Using an intertidal flat simulator, we evaluated dephosphorization slag mixed with 8% by dry weight of dredged sediment (DPSÂ +Â DS) as a basal medium for the growth of benthic macro- and microalgae in comparison with silica sand mixed with 8% dredged sediment (SSÂ +Â DS). Species compositions of macro- and microalgae were distinctly different between DPSÂ +Â DS and SSÂ +Â DS. The mean dry weight of macroalgae on DPSÂ +Â DS was three orders of magnitude higher than that on SSÂ +Â DS. Sediment shear strength and pH were higher in DPSÂ +Â DS than in SSÂ +Â DS or in the sediment of natural tidal flats. These results suggest that DPS contributes to changing the sediment environment, thereby changing the algal composition compared to the composition on natural tidal flats.
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