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  • 1
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Journal of Chemical Technology AND Biotechnology 59 (1994), S. 121-126 
    ISSN: 0268-2575
    Keywords: natural zeolites ; utilization ; pollution control ; removal ; heavy metals ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: This paper assesses the potential of natural zeolite utilization as a low-cost ion-exchange and sorbent material in pollution control and recovery of metals. The improvement of the purity of natural zeolites coupled with their chemical modification capabilities in order to provide specific properties may provide a cost-effective alternative for the treatment of heavy metal contaminated soil and water. The application of natural zeolites in industrial pollution control is becoming important and the level of technical effort is increasingly expanding. The extent of application is unlikely to be related solely to their low cost, but also to improved properties and performance characteristics, which will advance the practical implementation of natural zeolites' technology.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Journal of Chemical Technology AND Biotechnology 72 (1998), S. 329-338 
    ISSN: 0268-2575
    Keywords: activated carbon ; pyrolysis ; chemical waste ; zinc chloride ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: The feasibility of producing an adsorbent from an alkaline aqueous tarry industrial waste has been investigated in this study. The inherent disadvantages of producing a solid carbonaceous material from a waste with its organic content in a dissolved state were overcome by neutralising the waste liquor to pH〈2 in the presence of fuller's earth, filtering and producing a solid cake more suitable for thermal treatment. Optimisation of this procedure, followed by ZnCl2 activation, produced clay-carbon adsorbents with surface areas of up to 225 m2 g-1 capable of adsorbing 28% of phenol and 35% of 4-nitrophenol from 10 mM aqueous solution. The potential of this procedure in a beneficial waste reduction and re-use context are highlighted. © 1998 SCI
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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