Essays about: "Wood ash"

Showing result 16 - 20 of 55 essays containing the words Wood ash.

  1. 16. Arbuscular mycorrhizal fungi in spring wheat : impact of waste-based fertilizers

    University essay from SLU/Dept. of Soil and Environment

    Author : Julia Dahlqvist; [2018]
    Keywords : digestate; ash; Cd; cadmium; circular economy; phosphorus; Glomeromycota; quantitative polymerase chain reaction; qPCR; microscope; field; pH; Quarna;

    Abstract : Phosphate rock is a diminishing source of phosphorus (P) for crop production. Other sources are being investigated to replace it, for example bio-ash from wood combustion and biogas digestate from house hold wastes. Ash and digestate application have resulted in increased yields, but the effect on the soil biota has been somewhat varied. READ MORE

  3. 17. Effects of Different Fuels on Combustion Boiler Processes : The analysis of alternative fuel mixtures

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Malin Stauber Alfredsson; [2018]
    Keywords : Fluidized bed boiler; Sintering; High Temperature Corrosion; Used-wood Fired Boilers; Cl-induced Corrosion; Combined Heating Plant;

    Abstract : The objective of this study is to investigate the eect of dierent fuels on two uidized bed boiler systemsat the energy company Soderenergi's site in Igelsta, called IKV and IGV P3. Today, recovered wastewood (RWW) is the major fuel share fed into the boilers. However, with an insecure fuel supply in thefuture, other fuel types must be considered. READ MORE

  4. 18. Development of expression markers for reduced susceptibility in Fraxinus excelsior

    University essay from SLU/Dept. of Forest Mycology and Plant Pathology

    Author : Matilda Stein Åslund; [2018]
    Keywords : Fraxinus excelsior; European ash; Common ash; Molecular markers; Expression markers; Ash dieback disease; Hymenoschyphus fraxineus;

    Abstract : Common ash (Fraxinus excelsior) extends throughout temperate Europe, and in southern and central Sweden it is one of the most common broad-leaved deciduous trees. It is economically valuable thanks to its elastic, hard and pressure-resistant wood, and pollarded ash trees provide a cultural heritage in many European landscapes. READ MORE

  5. 19. Effects of wood ash on soil fertility and plant performance in southwestern Kenya

    University essay from SLU/Dept. of Soil and Environment

    Author : Jonna Wiklund; [2017]
    Keywords : fertilization; lime; nutrient depletion; soil acidification; smallholder farmers; Phaseolus vulgaris; Kenya;

    Abstract : A field experiment was conducted in Kisii county, southwestern Kenya from February to May 2017. The purpose of the study was to examine the effect of wood ash on soil pH, soil nutrient content and productivity of common bean (Phaseolus vulgaris L. READ MORE

  6. 20. Recovery of Phosphorus from Incineration of Sewage Sludge

    University essay from KTH/Skolan för kemivetenskap (CHE)

    Author : Aditi Bhasin; [2017]
    Keywords : ;

    Abstract : The primary source of phosphorus, phosphate rock, is a non-renewable resource which is expected to get exhausted in the next 50 – 100 years. Sewage sludge in Sweden constitutes 25% of the annual phosphorus in the country, making it a potentially significant source for phosphorus recovery. READ MORE