Sökning: "calcium hydroxide"

Visar resultat 1 - 5 av 24 uppsatser innehållade orden calcium hydroxide.

  1. 1. EFFECTS OF COMMERCIAL NANO-LIME PRODUCTS AS A CONSOLIDATION METHOD FOR WALL PAINTINGS An experimental case study

    Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvård

    Författare :Hannah Petrini; [2023-11-07]
    Nyckelord :wall paintings; Dalby Church; nano-lime; consolidation; Nanorestore®; Nanorestore Plus®; conservation of wall paintings;

    Sammanfattning : Some of the main deterioration problems concerning wall paintings is structural degradation of the wall painting and the flaking of the painted layer. Consolidation, both in the form of reinforcement of the rendering of the wall painting and the re-adherence of a flaking paint layer to the underlying substrate, have thus been an important part of conservation efforts concerning wall paintings. LÄS MER

  3. 2. Ersättning av kalciumhydroxidtill natriumhydroxid vidbehandling av processvatten frånbetningsprocess : För effektivisering av befintlig vattenreningsprocess

    Master-uppsats, Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper (from 2013)

    Författare :Oskar Pålsson; [2022]
    Nyckelord :Chemical water purification; sodium hydroxide; calcium hydroxide; sand filtration; activated carbon filtration; ion exchange filtration; Kemisk vattenrening; natriumhydroxid; kalciumhydroxid; sandfiltrering; aktiv kolfiltrering; jonbytarfiltrering;

    Sammanfattning : Arbetet studerade skillnaderna mellan en användning av kalciumhydroxid samtnatriumhydroxid som pH-reglerande kemikalie i en kemisk vattenreningsanläggning.Samt dess påverkan på filtreringssteg som sandfilter, aktivkol filtrering samt jonbytarfiltrering. LÄS MER

  4. 3. Transesterifiering av rapsolja katalyserad av natriumdopad kalciumoxid

    Kandidat-uppsats, KTH/Kemi

    Författare :Ammar Anayi; Christoffer Ottenstedt; Ludvig Jöcker; [2022]
    Nyckelord :Biodiesel; FAME; Heterogen katalys; Katalysator; Rapsolja; Transesterifiering;

    Sammanfattning : The aim of this study was to find and use a heterogeneous catalyst to catalyze the transesterification reaction of biodiesel. The purpose of this is to have a more sustainable production of biodiesel which uses fewer chemicals and can reuse the catalyst easily. LÄS MER

  5. 4. Concrete with low carbon dioxid emissions : Reduced amount of cement with husk ashes

    Kandidat-uppsats, KTH/Byggteknik och design

    Författare :Elsa Johannessen; Julia Knutsson; [2021]
    Nyckelord :Concrete; Oat husk ash; Rice husk ash; Carbon dioxide emissions; Pozzolanic material; Environmental impact; Reduced amount of cement; Betong; Havreskalaska; Risskalaska; Koldioxidutsläpp; Puzzolana material; Miljöpåverkan; Reducerad cementmängd;

    Sammanfattning : The world is facing a major climate threat where carbon dioxide emissions are in focus. At the same time, society requires new buildings and developed infrastructure. Concrete is one of the most common building materials and 30 billion tonnes are produced annually, which corresponds to about 6 percent of the world's carbon dioxide emissions. LÄS MER

  7. 5. Fertiliser derived from human urine : novel media for alkaline urine dehydration

    Master-uppsats, SLU/Dept. of Energy and Technology

    Författare :Christopher Friedrich; [2021]
    Nyckelord :nutrient recovery; fertiliser; urine drying; source separation; magnesium oxide; calcium hydroxide;

    Sammanfattning : Every year, each human excretes approximately 4 kg of nitrogen, 1 kg of potassium and 0.3 kg of phosphorus through their urine. In conventional wastewater treatment, these nutrients are usually not recovered for agricultural production, although they can enhance plant growth. LÄS MER