Colloidal Transport of Heavy Metals in Natural Subsurface Sediments



Colloidal Transport of Heavy Metals in Natural Subsurface Sediments
Şengör, Sema Sevinç (2021-03-01)
Colloidal transport of heavy metals in low-advective-velocity environmental systems: Reactive transport model on biogeochemical and hydrodynamic impacts
Şengör, Sema Sevinç; Ünlü, Kahraman (2022-01-01)
In this study, the impact of colloid facilitated transport of heavy metals on the overall biogeochemical processes is demonstrated in example Lake Coeurd'Alene sediments. Release and transport of heavy metals (Pb and Zn) on initially sorbed colloidal Fe (hydr)oxide minerals are compared with immobile surfaces under various advective flow velocities. The reactive transport model integrates a coupled biotic reaction network with multiple terminal electron acceptors, including multicomponent diffusion and elec...
Colloidal Stabilization of Submicron-Sized Zeolite NaA in Ethanol-Water Mixtures for Nanostructuring into Thin Films and Nanofibers
Gözcü, Oğuz; Kayacı, H. Utkucan; Dou, Yibo; Zhang, Wenjing; Hedin, Niklas; Jasso-Salcedo, Alma B.; Kaiser, Andreas; Çınar, Simge (2023-01-10)
Despite the growing use of organic or mixed solvents in zeolite processing, most studies focus only on aqueous suspension systems. We investigated the colloidal characteristics of submicron-sized zeolite NaA in mixed ethanol-water solvents. The effects of the mixing ratio of solvents and various additives on the dispersion of the zeolite powders were studied. The zeolite NaA particles were destabilized in solvent mixtures at a high ethanol-to-water ratio, a reduction in the zeta potential was observed, and ...
Colloidal CdSe Quantum Wells with Graded Shell Composition for Low-Threshold Amplified Spontaneous Emission and Highly Efficient Electroluminescence
Keleştemur, Yusuf; Anni, Marco; Yakunin, Sergii; De Giorgi, Maria Luisa; Kovalenko, Maksym V. (2019-12-01)
Semiconductor nanoplatelets (NPLs) have emerged as a very promising class of colloidal nanocrystals for light-emitting devices owing to their quantum-well-like electronic and optical characteristics. However, their lower photoluminescence quantum yield (PLQY) and limited stability have hampered the realization of their outstanding luminescent properties in device applications. Here, to address these deficiencies, we present a two-step synthetic approach that enables the synthesis of core/shell NPLs with pre...
Collagen/PEO/gold nanofibrous matrices for skin tissue engineering
Akturk, Omer; Keskin, Dilek (The Scientific and Technological Research Council of Turkey, 2016-01-01)
As a novel approach in skin tissue engineering, gold nanoparticles (AuNPs) were synthesized and incorporated at different concentrations into collagen/PEO nanofibrous matrices in this study. The group containing 14.27 ppm AuNPs (CM-Au) had the best nanofibrous morphology. CM-Au was cross-linked with glutaraldehyde vapor (CM-AuX). All groups were disrupted in collagenase in 2 h, but cross-linked groups and Matriderm (R) resisted hydrolytic degradation for 7 and 14 days, respectively. Due to its small pores a...
Citation Formats
S. S. Şengör, “Colloidal Transport of Heavy Metals in Natural Subsurface Sediments,” presented at the EGU General Assembly 2021, Vienna, Avusturya, 2021, Accessed: 00, 2022. [Online]. Available: