Lakehead University Library Logo
    • Login
    View Item 
    •   Knowledge Commons
    • Electronic Theses and Dissertations
    • Electronic Theses and Dissertations from 2009
    • View Item
    •   Knowledge Commons
    • Electronic Theses and Dissertations
    • Electronic Theses and Dissertations from 2009
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.
    quick search

    Browse

    All of Knowledge CommonsCommunities & CollectionsBy Issue DateAuthorTitleSubjectDisciplineAdvisorCommittee MemberThis CollectionBy Issue DateAuthorTitleSubjectDisciplineAdvisorCommittee Member

    My Account

    Login

    Statistics

    View Usage Statistics

    Extracting lignocelluloses from various spent liquors via adsorption

    Thumbnail

    View/Open

    OveissiF2014m-1a.pdf (4.328Mb)

    Date

    2015-10-20

    Author

    Oveissi, Farshad

    Degree

    Master of Science in Environmental Engineering

    Discipline

    Engineering

    Subject

    lignocellulose
    adsorption
    pulp and paper industry

    Metadata

    Show full item record

    Abstract

    The spent liquors of thermomechanical (TMP) and neutral sulfite semichemical (NSSC) pulping processes contain some lignocelluloses that are recently treated in the waste water of the processes, and thus wasted. In this dissertation, the adsorption concept was considered to separate lignocelluloses from the spent liquors (SL)s of TMP and NSSC processes. Various adsorbents such as activated carbon, fly ash, bentonite, kaolin, kaolinite, calcium carbonate, talc and aluminium silicate were used in order to adsorb lignocelluloses. The operating conditions of adsorption were optimized by adjusting pH, temperature and time of treatment. Moreover, various alternatives, such as pH adjustment, polymer addition and multi-stage adsorption processes were considered to improve the overall extraction of lignocelluloses from SLs. The properties of adsorbents, e.g. charge density and surface area, were related to the adsorption performance and the properties, e.g. turbidity and chemical oxygen demand (COD), of SLs after adsorption. The high removals in turbidity and COD showed that the suggested processes were not only effective in extracting lignocelluloses but also efficient in decreasing the load of wastewater treatment of the plant. Generally, the results showed that fly ash and precipitated calcium carbonate (PCC) were the best adsorbents for lignin removal, and the products could be used as fillers in composites.

    URI

    http://knowledgecommons.lakeheadu.ca/handle/2453/675

    Collections

    • Electronic Theses and Dissertations from 2009

    Lakehead University Library
    Contact Us | Send Feedback

     


    Lakehead University Library
    Contact Us | Send Feedback