- Title
- Mass stabilisation and leaching characteristics of organotins from contaminated dredged sediments
- Creator
- Turner, B. D.; Spadari, M.
- Relation
- International Journal of Environmental Science and Technology Vol. 19, Issue 8, p. 7425-7436
- Publisher Link
- http://dx.doi.org/10.1007/s13762-021-03657-9
- Publisher
- Center for Environment and Energy Research and Studies (C E E R S)
- Resource Type
- journal article
- Date
- 2022
- Description
- Organotins including tributyl tin (TBT) are an effective biocide that were widely used to prevent or inhibit the growth of marine invertebrates on a ship’s hull. The widespread use of these, however, has created a lasting legacy of TBT-contaminated sediments the world over. Here, experiments assessing the unconfined compressive strength and leach performance of various binders on the stabilsation of organotin contaminated estuarine sediments are demonstrated using monolithic semi-dynamic leach tests. In addition to traditional binders such as Ordinary Portland Cement (OPC), sediment amendments to increase the organic content (OC) using protein powder from Cannabis sativa L. (hemp) plant are kinetically modelled to determine the long-term leachability of organotins. Results show that after 120 days of continuous testing, the OPC + hemp amended monolith cumulatively leached ~ 68 μg Sn/m2 TBT with the control (OPC only) performing worst leaching ~ 180 μg Sn/m2 TBT. Long-term kinetic modelling of the data indicated that the control would leach a cumulative maximum of ~ 327 μg Sn/m2 TBT compared to only ~ 68 μg Sn/m2 TBT for the OC amended sample well below the Finnish guideline maxima of 672 μg Sn/m2 TBT.
- Subject
- tributyl tin (TBT); organotin; semi-dynamic; leachability; SDG 14; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1472838
- Identifier
- uon:48930
- Identifier
- ISSN:1735-1472
- Language
- eng
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