Essays about: "Dissolved organic matter"

Showing result 26 - 30 of 75 essays containing the words Dissolved organic matter.

1. 26. Bindning av PFAS-ämnen till humus- och fulvosyror : en dialysstudie

   University essay from SLU/Dept. of Soil and Environment

   Author : Johannes Kikuchi; [2020]
   Keywords : PFOS; PFOA; sorption; kinetics; dissolved organic matter; natural organic matter; DOC; DOM; membrane;

   Abstract : To make more accurate predictions of the mobility of perfluoroalkyl substances (PFAS) in soil and water, better understanding of PFAS sorption to components of the terrestrial and aquatic systems is needed. This study investigated the possible sorption of a range of PFAS compounds with varying chemistries to humic acid (HA) and fulvic acid (FA) using a dialysis bag experimental set-up. READ MORE

3. 27. How robust is water quality determination with optical measurements for highly polluted agricultural waters?

   University essay from SLU/Dept. of Soil and Environment

   Author : Honorine Uwera; [2020]
   Keywords : turbidity; suspended sediments; dissolved organic matter; optical measurements;

   Abstract : Optical technology is used to measure and monitor water quality, to date mainly in drinking water treatment, where water is typically much cleaner than in heavily polluted agricultural streams. To characterize suspended sediments (SS) and dissolved organic matter (DOM) in surface water some optical measurements have been used (absorbance and fluorescence spectroscopy). READ MORE

4. 28. Lakes are browner in the south than in the north of Sweden despite similar levels of dissolved iron

   University essay from Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap

   Author : Fredrik Lindgren; [2019]
   Keywords : Brownification; DOC; dissolved iron; humic lakes; sulphur deposition; absorbance; climate change;

   Abstract : During recent decades many lakes have become browner in the northern hemisphere and more specific in Sweden. This process is called brownification. Brownification of lakes makes it more difficult to clean water to drinking water and may have negative ecological effects on biota. READ MORE

5. 29. The content, chemical state and accumulation of vanadium in a drill core of Alum shale from Kinnekulle

   University essay from Lunds universitet/Kemiska institutionen

   Author : Niklas Gunnarsson; [2019]
   Keywords : Alum Shale Formation; Alum shale; Kinnekulle; Vanadium; Inorganic chemistry; Oorganisk kemi; Chemistry;

   Abstract : Exploitation of alum shale is a controversial subject in Sweden due to the history of pollution of the environment and groundwater, from past mining industries. The extraction of vanadium from alum shale is no different. Nevertheless the metal is a valuable resource used in tools, building, industries and aerospace materials. READ MORE

6. 30. Adsorption of micropollutants in wastewater using pulverized activate carbon - The influence of organic matter content and characteristics

   University essay from Lunds universitet/Miljövetenskaplig utbildning

   Author : Anna Nicola Messinger; [2019]
   Keywords : Pulverised Activated carbon; PAC; UVA254; Wastewater treatment; Micropollutants; Activated carbon; Earth and Environmental Sciences;

   Abstract : Wastewater is one of the biggest emission sources of organic micropollutants to the aquatic environment. Due to the negative effects of micropollutants on the receiving waters, advanced treatment steps are needed to reduce these emissions. Activated carbon is one promising approach. READ MORE