Search for dissertations about: "hydrogen sulfide ion"

Found 3 swedish dissertations containing the words hydrogen sulfide ion.

2. 1. Some aspects on TCF-bleachability of softwood alkaline pulps

   Author : Karin Sjöström; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bleachability; chlorine-free bleaching; softwoods; kraft pulps; alkaline sulfite pulps; oxygen; hydrogen peroxide; ozone; hydrogen sulfide ion; hydroxide ion; temperature; sodium ion.; Cellulose and paper engineering; Cellulosa- och pappersteknik;

   Abstract : The bleachability of softwood oxygen delignified pulps has been studied, i.e. the ease (requirement of bleaching chemicals) with which the pulps can be brightened to a target brightness in totally chlorine free (TCF) bleaching stages, including hydrogen peroxide, ozone and chelating agent stages. READ MORE

4. 2. Modelling of Kraft Cooking Kinetics Using Near Infrared Spectroscopy

   Author : Niclas Andersson; []
   Keywords : ;

   Abstract : A kinetic model describing the kraft cooking degradation reactions for softwood lignin and carbohydrates was developed in this thesis. The model satisfactorily predicted the data for modified as well as conventional cooking schemes, something which eluded earlier published models. READ MORE

5. 3. Reaction mechanism of metalloenzymes studied by theoretical methods

   Author : Geng Dong; Beräkningskemi; []
   Keywords : Metalloenzymes; Reaction mechanism; QM MM; DFT; DMRG; CAS-srDFT; Big-QM; QTCP;

   Abstract : Metalloenzymes catalyse a wide variety of reactions in nature. In the thesis, I have studied the reaction mechanism of three metalloenzymes, viz. READ MORE