Essays about: "Ferrihydrite"

Showing result 1 - 5 of 8 essays containing the word Ferrihydrite.

  1. 1. Removal of arsenic from groundwater using adsorption to ferrihydrite-coated laterite in Burkina Faso

    University essay from KTH/Mark- och vattenteknik (flyttat 20130630)

    Author : Agnes Hagstroem; [2017]
    Keywords : ;

    Abstract : In several parts of Burkina Faso, there is an urgent need of making arsenic contaminated water potable. The shallow, dug out wells traditionally used in the rural areas provides small, inconsistent yields and are vulnerable to microbes. READ MORE

  2. 2. Geochemical processes in mine waste subjected to a changing chemical environment: Fe speciation in leachate water from column experiments

    University essay from Luleå tekniska universitet/Geovetenskap och miljöteknik

    Author : Paula Lundberg; [2017]
    Keywords : Sulfidic mine waste; Sulfide oxidation; Water quality; Environmental analytical chemistry; Iron redox speciation;

    Abstract : Oxidation of sulfidic mine waste is of significant environmental concern due to the consequent formation of acid rock drainage (ARD), deteriorating the water quality of natural water systems. Iron (Fe) and sulfur (S) are two major redox elements involved in these reactions and typically the major redox-sensitive elements (whose solubility, speciation, and mobility are affected by pH and Eh) in water affected by ARD. READ MORE

  3. 3. OIL SHALE ASH UTILIZATION IN INDUSTRIAL PROCESSES AS AN ALTERNATIVE RAW MATERIAL

    University essay from KTH/Industriell ekologi; KTH/Industriell ekologi

    Author : Hussain Azeez Mohamed; Leonel Campos; [2016]
    Keywords : ;

    Abstract : Oil shale is a fine-grained sedimentary rock with the potential to yield significant amounts of oil and combustible gas when retorted. Oil shale deposits have been found on almost every continent, but only Estonia, who has the 8th largest oil shale deposit in the world has continuously utilized oil shale in large scale operations. READ MORE

  4. 4. Purification of arsenic contaminated water using ferrihydrite with consideration to current circumstances in Burkina Faso

    University essay from Uppsala universitet/Institutionen för geovetenskaper; Uppsala universitet/Institutionen för geovetenskaper; Uppsala universitet/Institutionen för geovetenskaper; Uppsala universitet/Institutionen för geovetenskaper; Uppsala universitet/Institutionen för geovetenskaper; Uppsala universitet/Institutionen för geovetenskaper

    Author : Linn Ambjörnsson; Katti Ewald; Erika Johansson Kling; Anna Larsson; Selenius Marie; Svedberg Elin; [2016]
    Keywords : Arsenic; ferrihydrite; adsorption; drinking water; Burkina Faso;

    Abstract : Ferrihydrite in a suspension has been studied as a solution for purification of arsenic contaminated water. Many development countries, amongst them Burkina Faso, have arsenic in their groundwater and the current methods for purification are too expensive. READ MORE

  5. 5. Estimating soluble arsenic and phosphorus concentrations under Precambrian oceanic conditions

    University essay from Stockholms universitet/Institutionen för geologiska vetenskaper

    Author : Christoffer Hemmingsson; [2014]
    Keywords : Arsenic; Phosphorus; Co-precipitation; Precambrian; Oceanic P levels; Ferrihydrite synthesis; Distribution coefficient; Banded iron formation;

    Abstract : Original estimates of phosphorus (P) concentrations in the Precambrian oceans before 1.9 Ga gave a budget of ~10-25% of modern day levels. READ MORE