Essays about: "Unsaturated Soil"

Showing result 1 - 5 of 17 essays containing the words Unsaturated Soil.

  1. 1. High levels of nickel from sulphide soil in Umeå's raw water : Modeling of groundwater flow and mass transport in Forslunda aquifer

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Merhawi Belai; [2024]
    Keywords : nickel; sulfide; sulphide; groundwater; modeling; mass transport; Feflow; Umeå; nickel; sulfid; monosulfid; grundvatten; modellering; masstransport; Feflow; Umeå;

    Abstract : The raw water in some of Umeå's abstraction wells has shown high nickel levels for more than a decade. The cause has not been determined but there is an investigation from 2010 where the results indicate sulphide clay found adjacent to two basins used for artificial infiltration. READ MORE

  3. 2. Rainwater Infiltration Model of the Chocaya Basin using Hydrus-1D

    University essay from Lunds universitet/Teknisk geologi; Lunds universitet/Väg- och vattenbyggnad (CI)

    Author : Alexander Bergman; Mire Persmark; [2020]
    Keywords : Rainwater Infiltration; Alluvial Plain; Chocaya Basin; Hydraulic Conductivity; Double Ring Infiltrometer DRI ; Hydrus-1D; Electrical Resistivity Tomography ERT ; Earth and Environmental Sciences;

    Abstract : The objective of this study was to assess the rainwater infiltration process in the unsaturated zone in an alluvial plain. Particularly, this study is focused on the Chocaya basin in central Bolivia. READ MORE

  4. 3. Nanoplastic transport in soils by advection and bioturbation

    University essay from SLU/Dept. of Soil and Environment

    Author : Wiebke Mareile Heinze; [2019]
    Keywords : column leaching; attachment efficiency; exposure; mixing rates; modelling;

    Abstract : Micro- and nanoplastics are increasingly perceived as an emerging threat to ecosystems. They are emitted to soils through different pathways, including sewage sludge or compost applications in agriculture, or through tire abrasion and degradation of mismanaged waste. READ MORE

  5. 4. Hydrus-1D as a tool to understand contamination of an aquifer: A case study in the Central Valley of Cochabamba

    University essay from Lunds universitet/Teknisk geologi

    Author : Theo Nyberg; [2019]
    Keywords : Technology and Engineering;

    Abstract : In water resource management, it is of importance to be able to predict how different activities might contaminate aquifers. For this kind of application, numerical modelling of water and solute transport can be a useful tool. READ MORE

  6. 5. Sorption of perfluorinated and polyfluorinated alkylated substances (PFASs) in the subsurface of an industrial site in Sweden

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Carl Sköld; [2019]
    Keywords : Sorption; soil-water partitioning; Kd; PFOS; PFOA; PFHxS; Sorption; fördelningskoefficient; Kd; PFOS; PFOA; PFHxS;

    Abstract : Per- and polyfluoroalkyl substances (PFASs) are a group of emerging chemicals which havereceived increasing attention due to their toxicity, persistent properties, and global distribution.In this study, sorption coefficients (Kd and KOC) of PFASs in an industrial site in Sweden wereevaluated. READ MORE