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Shakeel, A. (author), Zander, F. (author), Gebert, J. (author), Chassagne, C. (author), Kirichek, Alex (author)The presence of clay-organic flocs in cohesive mud results in a complex rheological behavior of mud, including viscoelasticity, shear-thinning, thixotropy and two-step yielding. In this study, the effect of microbial degradation of organic matter on the rheological properties of mud samples, collected from different ports, was examined. The mud...journal article 2022
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Kirichek, Alex (author), Shakeel, A. (author), Chassagne, C. (author), Gebert, J. (author)In some ports and waterways, hindered (delayed) settling of mud suspended in the water phase can be detected. Hindered settling phenomena are typically linked to a combination of sediment properties, suspended sediment concentration or density, hydrodynamic conditions, presence or absence of organic bridging between mud particles and the...conference paper 2022
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Gebert, J. (author), van Rhees, Floris (author), Shakeel, A. (author), Kirichek, Alex (author), Habdank, Janis (author), Amman, Baerbel (author)Maintenance of the nautical depth in the seaport of Emden, Germany, is achieved by re-circulation of fluid mud using a trailing suction hopper dredger. Continued re-circulation has proven to maintain low settling rates and to keep yield stresses of re-circulated fluid mud below 50-100 Pa, in combination with densities of 1.15- 1.2 t/m³ enabling...conference paper 2022
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Zander, F. (author), Shakeel, A. (author), Kirichek, Alex (author), Chassagne, C. (author), Gebert, J. (author)Purpose<br/>Sediment organic matter (SOM) influences settling and thus the rheological behavior of suspended particles by enhancing flocculation or reducing surface charges by forming organo-mineral complexes that facilitate particle–particle interactions in consolidating sediments. It was, therefore, assumed that the microbial degradation of...journal article 2022
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Shakeel, A. (author), Zander, F. (author), de Klerk, Jan‑Willem (author), Kirichek, Alex (author), Gebert, J. (author), Chassagne, C. (author)Purpose<br/>The presence of organic matter in cohesive sediment results in the formation of clay-organic flocs, which eventually impart complex rheological behavior including shear-thinning, viscoelasticity, thixotropy and two-step yielding to mud. In this study, the influence of microbial degradation of sediment organic matter on the...journal article 2022
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- Shakeel, A. (author), Zander, F. (author), Kirichek, Alex (author), Gebert, J. (author), Chassagne, C. (author) abstract 2021
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- Zander, F. (author), Shakeel, A. (author), Kirichek, Alex (author), Chassagne, C. (author), Gebert, J. (author) abstract 2021
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- Zander, F. (author), Shakeel, A. (author), Kirichek, Alex (author), Chassagne, C. (author), Gebert, J. (author) abstract 2019
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- Shakeel, A. (author), Zander, F. (author), Gebert, J. (author), Kirichek, Alex (author), Chassagne, C. (author) abstract 2019