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    Copper and nickel ion removal from synthesized process water using BSA-coated bubbles

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    Authors
    Nazari, Amir Mohammad
    Cox, Phil
    Waters, Kristian E.
    Issue Date
    2015-10-22
    
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    Abstract
    Biosorption of a ternary system containing copper, nickel and calcium ions was conducted to examine the ability of air-filled emulsions (AFE) to remove heavy metal ions from a synthetic process water. AFE is a novel colloidal material containing fine air bubbles encapsulated by a thin film of cysteine-rich protein. AFE introduces a high interfacial surface area between metal ions and extractant. Impact of different experimental conditions such as calcium ion concentration, AFE dosage and final solution pH on metal ion uptake was explored. Calcium ions exhibited an adverse effect on copper removal, which reduced by 70% due to both higher affinities of active binding sites for calcium ion compared to that of copper and nickel ions and bridging flocculation of microbubbles occurred in the solution. The results acquired from potentiometric titration showed the presence of three functional groups on the surface of bubbles (carboxylic, thiol and amine groups), the carboxylic group being the most abundant.
    Citation
    Copper and nickel ion removal from synthesized process water using BSA-coated bubbles 2015, 156:459 Separation and Purification Technology
    Publisher
    Elsevier
    Journal
    Separation and Purification Technology
    URI
    http://hdl.handle.net/2436/620502
    DOI
    10.1016/j.seppur.2015.10.035
    Additional Links
    http://linkinghub.elsevier.com/retrieve/pii/S1383586615302859
    Type
    Journal article
    Language
    en
    ISSN
    1383-5866
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.seppur.2015.10.035
    Scopus Count
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    Faculty of Science and Engineering

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