Essays about: "svavelsyra"

Showing result 6 - 10 of 20 essays containing the word svavelsyra.

  1. 6. Valorization of lignin for material applications

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

    Author : Filippa Winkvist; [2021]
    Keywords : microwave-assisted extraction; lignin; LCC; PLA; Pine; mikrovågsassisterad extraktion; lignin; LCC; PLA; tall;

    Abstract : Lignin är, med undantag för cellulosa, den av de naturliga polymererna det finns mest av på jorden och den ledande källan till fenolföreningar. De träväxterna som existerar idag, innehåller ca 30 % av just denna biopolymer. READ MORE

  3. 7. Chemical recycling of cotton-based waste textiles by sulfuric acid hydrolysis

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Edvin Ruuth; [2020]
    Keywords : recycling; hydrolysis; cotton; waste textiles; sulfuric acid; glucose; chemical engineering; kemiteknik; Technology and Engineering;

    Abstract : Large amounts of waste textiles are produced annually, of which only a small fraction is recycled currently. The purpose of this study was to develop a method to recycle cotton-based waste textiles chemically that can be coupled to the production of biofuels or green chemicals. READ MORE

  4. 8. Interpreting and composing SAGE II-III satellite data with a cloud algorithm for stratospheric aerosols

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Carl Svenhag; [2020]
    Keywords : atmospheric science; Aerosol; cloud physics; stratosphere; satellite observations; SAGE; Climate change; Earth and Environmental Sciences;

    Abstract : Tolkning och kvantifiering av strålningseffekter pga. atmosfäriska partiklar är en signifikant del av IPCC’s modellering av hur tidigare klimat förändrats och hur förändringar i framtiden kommer se ut. READ MORE

  5. 9. Practical strategies for acidification of animal slurry in storage

    University essay from SLU/Dept. of Soil and Environment

    Author : Emil Larsson; [2018]
    Keywords : buffer capacity; foam; NH3 emission; pH evolution; sulphuric acid;

    Abstract : Animal slurry is a source of NH3 emissions which results in loss of N and decrease the nutritive value of slurry. Slurry stores in Sweden represents approximately 30% of total NH3 emissions from agricultural activities in the country. READ MORE

  6. 10. Leaching of Pyrrhotite from Nickel Concentrate

    University essay from Luleå tekniska universitet/Industriell miljö- och processteknik

    Author : Filip Abrahamsson; [2017]
    Keywords : Leaching; Pyrrhotite; Nickel Concentrate; Pentlandite; H2SO4; sulfuric acid; non-oxidative; acid leaching; Lakning; Magnetkis; Nickelkoncentrat; Pentlandit; H2SO4; svavelsyra; icke-oxidativ; syralakning;

    Abstract : Non-oxidative acid leaching of pyrrhotite from Kevitsa’s Ni-concentrate and methods to recover by-products, have been investigated. Selective dissolution of pyrrhotite (Fe1-xS, 0<x<0.25) can enrich the content of the valuable metals, such as Ni and Co, in the final concentrate and will reduce the amount of Fe and S sent to the smelters. READ MORE