Hemoglobin (Hb) immobilized on amino-modified magnetic nanoparticles for the catalytic removal of bisphenol A |
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| Authors: | Tang Tiantian Fan Hai Ai Shiyun Han Ruixia Qiu Yanyan |
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| Institution: | a College of Resources and Environment, Shandong Agricultural University, Taian, Shandong 271018, China
b College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong 271018, China |
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| Abstract: | Catalytic removal of bisphenol A from aqueous solution with hemoglobin immobilized on amino-modified magnetic nanoparticles as an enzyme catalyst was reported. The amino-modified magnetite nanoparticles were firstly prepared by the coprecipitation of Fe2+ and Fe3+ with NH3·H2O and then modified by 3-aminopropyltriethoxysilane. The immobilization process was optimized by examining enzyme concentration, glutaraldehyde concentration, cross-link time, and immobilization time. The optimum conditions for the removal of bisphenol A with immobilized hemoglobin were also investigated. Under the optimality conditions, the removal efficiency of bisphenol A was about 80.3%. The immobilization had a beneficial effect on the stability of hemoglobin and conversions of bisphenol A. According to the proposed breakdown pathway and the intermediates, the enzyme-catalytic removal of bisphenol A by the immobilized hemoglobin is considered to be an effective method. |
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| Keywords: | Hemoglobin 3-Aminopropyltriethoxysilane coated magnetic nanoparticles Immobilization Bisphenol A Catalytic degradation |
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