Sökning: "perlite"

Visar resultat 1 - 5 av 11 uppsatser innehållade ordet perlite.

  1. 1. Ammonium and nitrate sorption by biochar

    Master-uppsats, SLU/Dept. of Soil and Environment

    Författare :Yasser Alrhban; [2023]
    Nyckelord :biochar nitrogen; retention; dialysis; absorption; adsorption; ammonium; nitrate;

    Sammanfattning : Biochar has recently drawn attention due to its ability to increase soil fertility, sequester carbon and its expected effect on reducing the leaching of elements from the soil, especially nitrogen. The possibility of using biochar as a soil amendment to reduce the amount of nitrogen leaching, and then reducing the quantities of nitrogen fertilizers used in agriculture to avoid the bad environmental effects has become a matter of great interest. LÄS MER

  3. 2. Review of pH recommendations for soilless cultivation systems

    Kandidat-uppsats, SLU/Dept. of Crop Production Ecology

    Författare :Elric Fabricius; [2023]
    Nyckelord :soilless cultivation; hydroponics; aeroponics; NFT; nutrient film technique; DWC; deep water culture; pH; nutrient solution; speciation; availability; biomass production;

    Sammanfattning : Our human population is growing, and with that, so is our demand for food, food that today still is not a guarantee for all of us. To help increase global food security, the diversification of our food production through the implementation of soilless, hydroponic cultivation systems has been suggested. LÄS MER

  4. 3. Cirkulär hydroponi : Från urbant avfall till odlingssubstrat

    Kandidat-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Izabella Karlsson; Maya Spencer; [2022]
    Nyckelord :Hydroponics; urban agriculture; circular economy; industrial symbiosis; Hydroponi; urban odling; cirkulär ekonomi; industriell symbios;

    Sammanfattning : Dagens samhälle är fullt av utmaningar vad gäller hållbarhet. En av de viktigaste frågeställningarna är hur mänskligheten kan tänka om jordbruket för att anpassa sig till den förväntade ökningen i efterfrågan på mat, och samtidigt göra jordbruket mer miljövänligt. LÄS MER

  5. 4. Adsorption studier av antimikrobiella komponenter på olika adsorption : Adsorption vid gränssnittet fast/vätska

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

    Författare :Hiam Sukkar; [2022]
    Nyckelord :;

    Sammanfattning : In this study, we examined the effects of temperature, heat treatment which were heated in oven for an hour in 200 ℃, and solvent on the adsorption isotherm for thymol and benzoic acid on the three surfaces (modified calcium carbonate, silica gel, and perlite). For the first effect, the adsorption isotherm for benzoic acid on modified calcium carbonate was determined at temperatures of 25, 35, 45 and 55 ℃ in ethanol solvent. LÄS MER

  7. 5. Biochar from garden waste as a potential hydroponic growing substrate

    Master-uppsats, Linköpings universitet/Industriell miljöteknik

    Författare :Pia Lampel; [2022]
    Nyckelord :;

    Sammanfattning : With an increasing need for food to feed the growing world population, resources like landand water for agriculture are becoming. As a response, hydroponic cultivation has becomemore popular. Hydroponic cultivation consumes less water, requires less land, and consumesfewer nutrients. LÄS MER