کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
70274 48820 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Polyaniline nanofiber coated monolith reactor for enzymatic bioconversion
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Polyaniline nanofiber coated monolith reactor for enzymatic bioconversion
چکیده انگلیسی

The monolith reactor has many advantages over other reactors including good mass transfer, low-pressure drop and high enzyme stability. In this study, an enzyme-coated monolith with high enzyme stability and activity was developed. The monolith surface was coated with polyaniline nanofibers containing glucose oxidase immobilized on its surface. The developed enzyme-coated monolith was used for the bioconversion of glucose to glucolactone at different residence times. The conversion ratio increased up to 83% at increasing residence time. In addition, the polyaniline-coated monolith showed excellent enzyme activity and long-term stability. The stability of the enzyme-coated monolith containing the polyaniline nanofibers showed almost 100% residual activities after 8 days operation, while rapid enzyme deactivation and detachment was observed when the enzymes were immobilized without the polyaniline nanofibers.

SEM images of the cross-sectional area of the (a) monolith and (b) monolith coated with PANI.Figure optionsDownload as PowerPoint slideResearch highlights▶ The polyaniline-coated monolith showed excellent enzyme activity and long term stability. ▶ The stability of the enzyme-coated monolith containing the polyaniline nanofibers showed almost 100% residual activities after 8 days operation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis B: Enzymatic - Volume 67, Issues 3–4, December 2010, Pages 179–183
نویسندگان
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