Hemoglobin (Hb) immobilized on amino-modified magnetic nanoparticles for the catalytic removal of bisphenol A.
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 Fe(2+) and Fe(3+) with NH(3)·H(2)O 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.
College of Resources and Environment, Shandong Agricultural University, Taian, Shandong 271018, China.
Tiantian
T
Tang
Hai
H
Fan
Shiyun
S
Ai
Ruixia
R
Han
Yanyan
Y
Qiu
D001559:Benzhydryl Compounds; D002384:Catalysis; D052244:Endocrine Disruptors / Q000737:chemistry; D052918:Environmental Restoration and Remediation; D006454:Hemoglobins / Q000737:chemistry*; D007501:Iron / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry*; D011437:Propylamines; D012821:Silanes / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D000098826:Bisphenol A Compounds
D001559:Benzhydryl Compounds; D052244:Endocrine Disruptors; D006454:Hemoglobins; D007501:Iron; D010636:Phenols; D011437:Propylamines; D012821:Silanes; D014874:Water Pollutants, Chemical; C477625:amino-propyl-triethoxysilane; C006780:bisphenol A; D000098826:Bisphenol A Compounds