Essays about: "Alkaline extraction"

Showing result 21 - 23 of 23 essays containing the words Alkaline extraction.

1. 21. Geochemistry of arsenic and heavy metals in pyrite ash : speciation, solubility control mechanisms and geochemical modelling

   University essay from SLU/Dept. of Soil and Environment

   Author : Gunilla Theorin; [2015]
   Keywords : soil contamination; leaching tests; extractions; EDTA; kinetics; surface complexation modelling;

   Abstract : This thesis was part of a project at the Swedish Geotechnical Institute aiming at investigating the geochemistry of heavy metals and arsenic in pyrite ash. The spe-cific aims with this work were to extend the knowledge on solubility control mechanisms of metals in pyrite ash and how the sorption ability of the ash was dependent on content of iron (hydr)oxides. READ MORE

3. 22. Petrogenesis of Carbonatites in the Alnö Complex, Central Sweden

   University essay from Institutionen för geovetenskaper

   Author : Sherissa Roopnarain; [2013]
   Keywords : Petrogenesis; Carbonatite; Alnö Complex; Stable Isotope; Rare Earth Element REE ; Kimberlite; Sustainable Development; Resource Mining; Rural Landscape; Natural Heritage.;

   Abstract : The Alnö Complex is a Late Precambrian alkaline and carbonatite intrusion (c. 30km2) into Early Proterozoic country rock that extends from the north east, to the north western shoulder of Alnö Island. READ MORE

4. 23. Hot Caustic Extraction of Spruce Sulfite Dissolving Pulp

   University essay from Karlstads universitet/Avdelningen för kemiteknik

   Author : Ikechukwu Nebamoh; [2012]
   Keywords : ;

   Abstract : The purpose of this thesis was to optimize the hot caustic extraction stage on a spruce sulfite dissolving pulp. The pulp was subjected to hot alkaline extraction at different temperatures and alkaline charges. The consistency of the pulp was always at 8%. READ MORE