Essays about: "unsaturated flow"

Showing result 1 - 5 of 11 essays containing the words unsaturated flow.

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. Gas Chromatography Mass Spectrometry Analysis of Epoxides in Gas Phase Reactions

   University essay from KTH/Kemi

   Author : Stephanie Kylington; [2022]
   Keywords : organic peroxy radicals; unsaturated alkenes; TD-GCMS; Tenax® TA; internal standard; organiska peroxidradikaler; omättade alkener; TD-GCMS; Tenax® TA; intern standard;

   Abstract : En nyligen genomförd studie visade att reaktioner mellan vissa radikaler och omättade alkener är snabbare vid rumstemperatur än vad man tidigare har trott. Dessa reaktioner är viktiga för atmosfäriska oxidationscykler och följaktligen var syftet med detta masterprojekt att beräkna hastighetskonstanterna för dessa reaktioner mellan metyljodid och 1-jodidpentan med tetrametyletylen, isopren och limonen vid rumstemperatur genom att kvantifiera respektive epoxid; tetrametyloxiran, isoprenmonoxid och limonen 1,2 epoxid, som producerades. READ MORE

4. 3. Characterization and optimization of Rhodosporidium toruloides for production of lipids

   University essay from Lunds universitet/Kemiteknik (CI)

   Author : Niharika Singh; [2021]
   Keywords : chemical engineering; oily yeasts; lipids; nitrogen limitation; Technology and Engineering;

   Abstract : Oleaginous microorganisms provide an opportunity to produce oils without the use of arable land for cultivation of oil-containing plants. Oleaginous microorganisms are also capable of storing products of pharmaceutical interest alongside storing polymers, which could open new opportunities in the bioplastic industry. READ MORE

5. 4. Simulation of Leachate Generation from a Waste Rock Dump in Kiruna Using HYDRUS-1D

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Aryani Atmosudirdjo; [2019]
   Keywords : Hydrus-1D; matrix flow; leachate; unsaturated flow; waste rock dump;

   Abstract : The percolation of water through waste rock dumps at mine sites can lead to the production of a leachate with high concentrations of dissolved metals, sulfate and nitrogen compounds. It is important to understand how water flows in waste rock dumps in order to predict the environmental impact of this leachate on recipients. READ MORE

6. 5. Phosphorus and Nitrogen Removalin Modified Biochar Filters

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Ylva Stenström; [2017]
   Keywords : biochar; modified biochar; phosphorus filter; wastewater; batch adsorption experiment; nitrogen filter; COD; Tot-P; Tot-N; biokol; impregnerat biokol; fosforfilter; avloppsvatten; skakexperiment; kvävefilter; COD; Tot-P; Tot-N;

   Abstract : Onsite wastewater treatment systems in Sweden are getting old and many of them lack sufficient phosphorus, nitrogen and organic carbon reduction. Biochar is a material that has been suggested as an alternative to the common sand or soil used in onsite wastewater treatment systems. READ MORE